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/* |
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* %W% %E% |
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* |
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved. |
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* Copyright 2005 Sun Microsystems, Inc. All rights reserved. |
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* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. |
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*/ |
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package java.util; |
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package java.util; |
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import java.util.*; // for javadoc |
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/** |
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* Red-Black tree based implementation of the <tt>NavigableMap</tt> interface. |
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* This class guarantees that the map will be in ascending key order, sorted |
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* according to the <i>natural order</i> for the key's class (see |
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* <tt>Comparable</tt>), or by the comparator provided at creation time, |
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* depending on which constructor is used.<p> |
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* A Red-Black tree based {@link NavigableMap} implementation. |
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* The map is sorted according to the {@linkplain Comparable natural |
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* ordering} of its keys, or by a {@link Comparator} provided at map |
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* creation time, depending on which constructor is used. |
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* |
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* This implementation provides guaranteed log(n) time cost for the |
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* <p>This implementation provides guaranteed log(n) time cost for the |
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* <tt>containsKey</tt>, <tt>get</tt>, <tt>put</tt> and <tt>remove</tt> |
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* operations. Algorithms are adaptations of those in Cormen, Leiserson, and |
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* Rivest's <I>Introduction to Algorithms</I>.<p> |
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* Rivest's <I>Introduction to Algorithms</I>. |
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* |
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* Note that the ordering maintained by a sorted map (whether or not an |
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* <p>Note that the ordering maintained by a sorted map (whether or not an |
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* explicit comparator is provided) must be <i>consistent with equals</i> if |
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* this sorted map is to correctly implement the <tt>Map</tt> interface. (See |
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* <tt>Comparable</tt> or <tt>Comparator</tt> for a precise definition of |
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* method, so two keys that are deemed equal by this method are, from the |
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* standpoint of the sorted map, equal. The behavior of a sorted map |
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* <i>is</i> well-defined even if its ordering is inconsistent with equals; it |
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* just fails to obey the general contract of the <tt>Map</tt> interface.<p> |
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* just fails to obey the general contract of the <tt>Map</tt> interface. |
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* |
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* <b>Note that this implementation is not synchronized.</b> If multiple |
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* <p><b>Note that this implementation is not synchronized.</b> If multiple |
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* threads access a map concurrently, and at least one of the threads modifies |
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* the map structurally, it <i>must</i> be synchronized externally. (A |
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* structural modification is any operation that adds or deletes one or more |
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* time, to prevent accidental unsynchronized access to the map: |
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* <pre> |
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* Map m = Collections.synchronizedMap(new TreeMap(...)); |
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* </pre><p> |
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* </pre> |
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* |
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* The iterators returned by all of this class's "collection view methods" are |
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* <p>The iterators returned by the <tt>iterator</tt> method of the collections |
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* returned by all of this class's "collection view methods" are |
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* <i>fail-fast</i>: if the map is structurally modified at any time after the |
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* iterator is created, in any way except through the iterator's own |
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* <tt>remove</tt> or <tt>add</tt> methods, the iterator throws a |
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* <tt>ConcurrentModificationException</tt>. Thus, in the face of concurrent |
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* <tt>remove</tt> method, the iterator will throw a {@link |
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* ConcurrentModificationException}. Thus, in the face of concurrent |
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* modification, the iterator fails quickly and cleanly, rather than risking |
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* arbitrary, non-deterministic behavior at an undetermined time in the |
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* future. |
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* arbitrary, non-deterministic behavior at an undetermined time in the future. |
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* |
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* <p>Note that the fail-fast behavior of an iterator cannot be guaranteed |
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* as it is, generally speaking, impossible to make any hard guarantees in the |
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* throw <tt>ConcurrentModificationException</tt> on a best-effort basis. |
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* Therefore, it would be wrong to write a program that depended on this |
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* exception for its correctness: <i>the fail-fast behavior of iterators |
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* should be used only to detect bugs.</i><p> |
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* should be used only to detect bugs.</i> |
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* |
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* <p>All <tt>Map.Entry</tt> pairs returned by methods in this class |
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* and its views represent snapshots of mappings at the time they were |
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* <a href="{@docRoot}/../guide/collections/index.html"> |
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* Java Collections Framework</a>. |
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* |
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* @param <K> the type of keys maintained by this map |
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* @param <V> the type of mapped values |
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* |
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* @author Josh Bloch and Doug Lea |
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* @version %I%, %G% |
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* @see Map |
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implements NavigableMap<K,V>, Cloneable, java.io.Serializable |
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{ |
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/** |
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* The Comparator used to maintain order in this TreeMap, or |
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* null if this TreeMap uses its elements natural ordering. |
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* The comparator used to maintain order in this tree map, or |
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* null if it uses the natural ordering of its keys. |
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* |
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* @serial |
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*/ |
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private void decrementSize() { modCount++; size--; } |
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/** |
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* Constructs a new, empty map, sorted according to the keys' natural |
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* order. All keys inserted into the map must implement the |
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* <tt>Comparable</tt> interface. Furthermore, all such keys must be |
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* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw a |
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* ClassCastException for any elements <tt>k1</tt> and <tt>k2</tt> in the |
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* map. If the user attempts to put a key into the map that violates this |
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* constraint (for example, the user attempts to put a string key into a |
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* map whose keys are integers), the <tt>put(Object key, Object |
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* value)</tt> call will throw a <tt>ClassCastException</tt>. |
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* |
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* @see Comparable |
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* Constructs a new, empty tree map, using the natural ordering of its |
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* keys. All keys inserted into the map must implement the {@link |
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* Comparable} interface. Furthermore, all such keys must be |
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* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw |
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* a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
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* <tt>k2</tt> in the map. If the user attempts to put a key into the |
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* map that violates this constraint (for example, the user attempts to |
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* put a string key into a map whose keys are integers), the |
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* <tt>put(Object key, Object value)</tt> call will throw a |
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* <tt>ClassCastException</tt>. |
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*/ |
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public TreeMap() { |
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} |
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|
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/** |
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* Constructs a new, empty map, sorted according to the given comparator. |
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* All keys inserted into the map must be <i>mutually comparable</i> by |
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* the given comparator: <tt>comparator.compare(k1, k2)</tt> must not |
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* throw a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
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* <tt>k2</tt> in the map. If the user attempts to put a key into the |
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* map that violates this constraint, the <tt>put(Object key, Object |
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* value)</tt> call will throw a <tt>ClassCastException</tt>. |
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* |
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* @param c the comparator that will be used to sort this map. A |
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* <tt>null</tt> value indicates that the keys' <i>natural |
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* ordering</i> should be used. |
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*/ |
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public TreeMap(Comparator<? super K> c) { |
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this.comparator = c; |
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* Constructs a new, empty tree map, ordered according to the given |
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* comparator. All keys inserted into the map must be <i>mutually |
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* comparable</i> by the given comparator: <tt>comparator.compare(k1, |
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* k2)</tt> must not throw a <tt>ClassCastException</tt> for any keys |
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* <tt>k1</tt> and <tt>k2</tt> in the map. If the user attempts to put |
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* a key into the map that violates this constraint, the <tt>put(Object |
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* key, Object value)</tt> call will throw a |
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* <tt>ClassCastException</tt>. |
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* |
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* @param comparator the comparator that will be used to order this map. |
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* If <tt>null</tt>, the {@linkplain Comparable natural |
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* ordering} of the keys will be used. |
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*/ |
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public TreeMap(Comparator<? super K> comparator) { |
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this.comparator = comparator; |
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} |
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|
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/** |
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* Constructs a new map containing the same mappings as the given map, |
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* sorted according to the keys' <i>natural order</i>. All keys inserted |
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* into the new map must implement the <tt>Comparable</tt> interface. |
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* Furthermore, all such keys must be <i>mutually comparable</i>: |
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* <tt>k1.compareTo(k2)</tt> must not throw a <tt>ClassCastException</tt> |
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* for any elements <tt>k1</tt> and <tt>k2</tt> in the map. This method |
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* runs in n*log(n) time. |
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* |
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* @param m the map whose mappings are to be placed in this map. |
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* @throws ClassCastException the keys in t are not Comparable, or |
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* are not mutually comparable. |
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* @throws NullPointerException if the specified map is null. |
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* Constructs a new tree map containing the same mappings as the given |
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* map, ordered according to the <i>natural ordering</i> of its keys. |
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* All keys inserted into the new map must implement the {@link |
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* Comparable} interface. Furthermore, all such keys must be |
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* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw |
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* a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
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* <tt>k2</tt> in the map. This method runs in n*log(n) time. |
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* |
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* @param m the map whose mappings are to be placed in this map |
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* @throws ClassCastException if the keys in m are not {@link Comparable}, |
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* or are not mutually comparable |
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* @throws NullPointerException if the specified map is null |
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*/ |
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public TreeMap(Map<? extends K, ? extends V> m) { |
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putAll(m); |
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} |
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/** |
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* Constructs a new map containing the same mappings as the given |
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* <tt>SortedMap</tt>, sorted according to the same ordering. This method |
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* runs in linear time. |
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* Constructs a new tree map containing the same mappings and |
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* using the same ordering as the specified sorted map. This |
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* method runs in linear time. |
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* |
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* @param m the sorted map whose mappings are to be placed in this map, |
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* and whose comparator is to be used to sort this map. |
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* @throws NullPointerException if the specified sorted map is null. |
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* and whose comparator is to be used to sort this map |
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* @throws NullPointerException if the specified map is null |
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*/ |
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public TreeMap(SortedMap<K, ? extends V> m) { |
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comparator = m.comparator(); |
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/** |
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* Returns the number of key-value mappings in this map. |
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* |
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* @return the number of key-value mappings in this map. |
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* @return the number of key-value mappings in this map |
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*/ |
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public int size() { |
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return size; |
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* Returns <tt>true</tt> if this map contains a mapping for the specified |
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* key. |
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* |
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* @param key key whose presence in this map is to be tested. |
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* |
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* @param key key whose presence in this map is to be tested |
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* @return <tt>true</tt> if this map contains a mapping for the |
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* specified key. |
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* @throws ClassCastException if the key cannot be compared with the keys |
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* currently in the map. |
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* @throws NullPointerException key is <tt>null</tt> and this map uses |
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* natural ordering, or its comparator does not tolerate |
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* <tt>null</tt> keys. |
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* specified key |
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* @throws ClassCastException if the specified key cannot be compared |
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* with the keys currently in the map |
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* @throws NullPointerException if the specified key is null |
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* and this map uses natural ordering, or its comparator |
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* does not permit null keys |
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*/ |
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public boolean containsKey(Object key) { |
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return getEntry(key) != null; |
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* specified value. More formally, returns <tt>true</tt> if and only if |
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* this map contains at least one mapping to a value <tt>v</tt> such |
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* that <tt>(value==null ? v==null : value.equals(v))</tt>. This |
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* operation will probably require time linear in the Map size for most |
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* implementations of Map. |
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* operation requires time linear in the map size. |
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* |
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* @param value value whose presence in this Map is to be tested. |
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* @return <tt>true</tt> if a mapping to <tt>value</tt> exists; |
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* <tt>false</tt> otherwise. |
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* @param value value whose presence in this map is to be tested |
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* @return <tt>true</tt> if a mapping to <tt>value</tt> exists; |
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* <tt>false</tt> otherwise |
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* @since 1.2 |
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*/ |
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public boolean containsValue(Object value) { |
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} |
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|
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/** |
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* Returns the value to which this map maps the specified key. Returns |
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* <tt>null</tt> if the map contains no mapping for this key. A return |
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* Returns the value to which this map maps the specified key, or |
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* <tt>null</tt> if the map contains no mapping for the key. A return |
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* value of <tt>null</tt> does not <i>necessarily</i> indicate that the |
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* map contains no mapping for the key; it's also possible that the map |
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* explicitly maps the key to <tt>null</tt>. The <tt>containsKey</tt> |
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* explicitly maps the key to <tt>null</tt>. The {@link #containsKey} |
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* operation may be used to distinguish these two cases. |
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* |
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* @param key key whose associated value is to be returned. |
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* @param key key whose associated value is to be returned |
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* @return the value to which this map maps the specified key, or |
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* <tt>null</tt> if the map contains no mapping for the key. |
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* @throws ClassCastException key cannot be compared with the keys |
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* currently in the map. |
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* @throws NullPointerException key is <tt>null</tt> and this map uses |
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* natural ordering, or its comparator does not tolerate |
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* <tt>null</tt> keys. |
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* |
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* @see #containsKey(Object) |
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* <tt>null</tt> if the map contains no mapping for the key |
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* @throws ClassCastException if the specified key cannot be compared |
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* with the keys currently in the map |
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* @throws NullPointerException if the specified key is null |
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* and this map uses natural ordering, or its comparator |
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* does not permit null keys |
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*/ |
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public V get(Object key) { |
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Entry<K,V> p = getEntry(key); |
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return (p==null ? null : p.value); |
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} |
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|
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– |
/** |
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– |
* Returns the comparator used to order this map, or <tt>null</tt> if this |
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– |
* map uses its keys' natural order. |
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– |
* |
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– |
* @return the comparator associated with this sorted map, or |
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– |
* <tt>null</tt> if it uses its keys' natural sort method. |
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– |
*/ |
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public Comparator<? super K> comparator() { |
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return comparator; |
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} |
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|
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/** |
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* Returns the first (lowest) key currently in this sorted map. |
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< |
* |
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< |
* @return the first (lowest) key currently in this sorted map. |
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* @throws NoSuchElementException Map is empty. |
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* @throws NoSuchElementException {@inheritDoc} |
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*/ |
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public K firstKey() { |
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return key(getFirstEntry()); |
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} |
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|
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/** |
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* Returns the last (highest) key currently in this sorted map. |
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< |
* |
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< |
* @return the last (highest) key currently in this sorted map. |
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< |
* @throws NoSuchElementException Map is empty. |
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> |
* @throws NoSuchElementException {@inheritDoc} |
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*/ |
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public K lastKey() { |
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return key(getLastEntry()); |
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} |
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|
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/** |
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< |
* Copies all of the mappings from the specified map to this map. These |
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< |
* mappings replace any mappings that this map had for any of the keys |
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< |
* currently in the specified map. |
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< |
* |
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< |
* @param map mappings to be stored in this map. |
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< |
* @throws ClassCastException class of a key or value in the specified |
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* map prevents it from being stored in this map. |
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* |
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< |
* @throws NullPointerException if the given map is <tt>null</tt> or |
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< |
* this map does not permit <tt>null</tt> keys and a |
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< |
* key in the specified map is <tt>null</tt>. |
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> |
* Copies all of the mappings from the specified map to this map. |
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* These mappings replace any mappings that this map had for any |
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> |
* of the keys currently in the specified map. |
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> |
* |
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> |
* @param map mappings to be stored in this map |
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> |
* @throws ClassCastException if the class of a key or value in |
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* the specified map prevents it from being stored in this map |
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> |
* @throws NullPointerException if the specified map is null or |
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* the specified map contains a null key and this map does not |
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* permit null keys |
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*/ |
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public void putAll(Map<? extends K, ? extends V> map) { |
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int mapSize = map.size(); |
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* does not contain an entry for the key. |
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* |
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* @return this map's entry for the given key, or <tt>null</tt> if the map |
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< |
* does not contain an entry for the key. |
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< |
* @throws ClassCastException if the key cannot be compared with the keys |
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< |
* currently in the map. |
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< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
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< |
* natural order, or its comparator does not tolerate * |
| 332 |
< |
* <tt>null</tt> keys. |
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> |
* does not contain an entry for the key |
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> |
* @throws ClassCastException if the specified key cannot be compared |
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> |
* with the keys currently in the map |
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> |
* @throws NullPointerException if the specified key is null |
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> |
* and this map uses natural ordering, or its comparator |
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> |
* does not permit null keys |
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*/ |
| 334 |
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private Entry<K,V> getEntry(Object key) { |
| 335 |
|
// Offload comparator-based version for sake of performance |
| 336 |
|
if (comparator != null) |
| 337 |
|
return getEntryUsingComparator(key); |
| 338 |
< |
Comparable<K> k = (Comparable<K>) key; |
| 338 |
> |
Comparable<? super K> k = (Comparable<? super K>) key; |
| 339 |
|
Entry<K,V> p = root; |
| 340 |
|
while (p != null) { |
| 341 |
|
int cmp = k.compareTo(p.key); |
| 509 |
|
} |
| 510 |
|
|
| 511 |
|
/** |
| 512 |
< |
* Returns the key corresponding to the specified Entry. Throw |
| 513 |
< |
* NoSuchElementException if the Entry is <tt>null</tt>. |
| 512 |
> |
* Returns the key corresponding to the specified Entry. |
| 513 |
> |
* @throws NoSuchElementException if the Entry is null |
| 514 |
|
*/ |
| 515 |
|
private static <K> K key(Entry<K,?> e) { |
| 516 |
|
if (e==null) |
| 523 |
|
* If the map previously contained a mapping for this key, the old |
| 524 |
|
* value is replaced. |
| 525 |
|
* |
| 526 |
< |
* @param key key with which the specified value is to be associated. |
| 527 |
< |
* @param value value to be associated with the specified key. |
| 526 |
> |
* @param key key with which the specified value is to be associated |
| 527 |
> |
* @param value value to be associated with the specified key |
| 528 |
|
* |
| 529 |
< |
* @return previous value associated with specified key, or <tt>null</tt> |
| 530 |
< |
* if there was no mapping for key. A <tt>null</tt> return can |
| 531 |
< |
* also indicate that the map previously associated <tt>null</tt> |
| 532 |
< |
* with the specified key. |
| 533 |
< |
* @throws ClassCastException key cannot be compared with the keys |
| 534 |
< |
* currently in the map. |
| 535 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 536 |
< |
* natural order, or its comparator does not tolerate |
| 537 |
< |
* <tt>null</tt> keys. |
| 529 |
> |
* @return the previous value associated with <tt>key</tt>, or |
| 530 |
> |
* <tt>null</tt> if there was no mapping for <tt>key</tt>. |
| 531 |
> |
* (A <tt>null</tt> return can also indicate that the map |
| 532 |
> |
* previously associated <tt>null</tt> with <tt>key</tt>.) |
| 533 |
> |
* @throws ClassCastException if the specified key cannot be compared |
| 534 |
> |
* with the keys currently in the map |
| 535 |
> |
* @throws NullPointerException if the specified key is null |
| 536 |
> |
* and this map uses natural ordering, or its comparator |
| 537 |
> |
* does not permit null keys |
| 538 |
|
*/ |
| 539 |
|
public V put(K key, V value) { |
| 540 |
|
Entry<K,V> t = root; |
| 541 |
|
|
| 542 |
|
if (t == null) { |
| 543 |
+ |
if (key == null) { |
| 544 |
+ |
if (comparator == null) |
| 545 |
+ |
throw new NullPointerException(); |
| 546 |
+ |
comparator.compare(key, key); |
| 547 |
+ |
} |
| 548 |
|
incrementSize(); |
| 549 |
|
root = new Entry<K,V>(key, value, null); |
| 550 |
|
return null; |
| 551 |
< |
} |
| 551 |
> |
} |
| 552 |
|
|
| 553 |
|
while (true) { |
| 554 |
|
int cmp = compare(key, t.key); |
| 580 |
|
* Removes the mapping for this key from this TreeMap if present. |
| 581 |
|
* |
| 582 |
|
* @param key key for which mapping should be removed |
| 583 |
< |
* @return previous value associated with specified key, or <tt>null</tt> |
| 584 |
< |
* if there was no mapping for key. A <tt>null</tt> return can |
| 585 |
< |
* also indicate that the map previously associated |
| 586 |
< |
* <tt>null</tt> with the specified key. |
| 587 |
< |
* |
| 588 |
< |
* @throws ClassCastException key cannot be compared with the keys |
| 589 |
< |
* currently in the map. |
| 590 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 591 |
< |
* natural order, or its comparator does not tolerate |
| 603 |
< |
* <tt>null</tt> keys. |
| 583 |
> |
* @return the previous value associated with <tt>key</tt>, or |
| 584 |
> |
* <tt>null</tt> if there was no mapping for <tt>key</tt>. |
| 585 |
> |
* (A <tt>null</tt> return can also indicate that the map |
| 586 |
> |
* previously associated <tt>null</tt> with <tt>key</tt>.) |
| 587 |
> |
* @throws ClassCastException if the specified key cannot be compared |
| 588 |
> |
* with the keys currently in the map |
| 589 |
> |
* @throws NullPointerException if the specified key is null |
| 590 |
> |
* and this map uses natural ordering, or its comparator |
| 591 |
> |
* does not permit null keys |
| 592 |
|
*/ |
| 593 |
|
public V remove(Object key) { |
| 594 |
|
Entry<K,V> p = getEntry(key); |
| 601 |
|
} |
| 602 |
|
|
| 603 |
|
/** |
| 604 |
< |
* Removes all mappings from this TreeMap. |
| 604 |
> |
* Removes all of the mappings from this map. |
| 605 |
> |
* The map will be empty after this call returns. |
| 606 |
|
*/ |
| 607 |
|
public void clear() { |
| 608 |
|
modCount++; |
| 614 |
|
* Returns a shallow copy of this <tt>TreeMap</tt> instance. (The keys and |
| 615 |
|
* values themselves are not cloned.) |
| 616 |
|
* |
| 617 |
< |
* @return a shallow copy of this Map. |
| 617 |
> |
* @return a shallow copy of this map |
| 618 |
|
*/ |
| 619 |
|
public Object clone() { |
| 620 |
|
TreeMap<K,V> clone = null; |
| 644 |
|
|
| 645 |
|
// NavigableMap API methods |
| 646 |
|
|
| 658 |
– |
/** |
| 659 |
– |
* Returns a key-value mapping associated with the least |
| 660 |
– |
* key in this map, or <tt>null</tt> if the map is empty. |
| 661 |
– |
* |
| 662 |
– |
* @return an Entry with least key, or <tt>null</tt> |
| 663 |
– |
* if the map is empty. |
| 664 |
– |
*/ |
| 647 |
|
public Map.Entry<K,V> firstEntry() { |
| 648 |
|
Entry<K,V> e = getFirstEntry(); |
| 649 |
< |
return (e == null)? null : new SnapshotEntry(e); |
| 649 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 650 |
|
} |
| 651 |
|
|
| 670 |
– |
/** |
| 671 |
– |
* Returns a key-value mapping associated with the greatest |
| 672 |
– |
* key in this map, or <tt>null</tt> if the map is empty. |
| 673 |
– |
* The returned entry does <em>not</em> support |
| 674 |
– |
* the <tt>Entry.setValue</tt> method. |
| 675 |
– |
* |
| 676 |
– |
* @return an Entry with greatest key, or <tt>null</tt> |
| 677 |
– |
* if the map is empty. |
| 678 |
– |
*/ |
| 652 |
|
public Map.Entry<K,V> lastEntry() { |
| 653 |
|
Entry<K,V> e = getLastEntry(); |
| 654 |
< |
return (e == null)? null : new SnapshotEntry(e); |
| 654 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 655 |
|
} |
| 656 |
|
|
| 684 |
– |
/** |
| 685 |
– |
* Removes and returns a key-value mapping associated with |
| 686 |
– |
* the least key in this map, or <tt>null</tt> if the map is empty. |
| 687 |
– |
* |
| 688 |
– |
* @return the removed first entry of this map, or <tt>null</tt> |
| 689 |
– |
* if the map is empty. |
| 690 |
– |
*/ |
| 657 |
|
public Map.Entry<K,V> pollFirstEntry() { |
| 658 |
|
Entry<K,V> p = getFirstEntry(); |
| 659 |
< |
if (p == null) |
| 659 |
> |
if (p == null) |
| 660 |
|
return null; |
| 661 |
< |
Map.Entry result = new SnapshotEntry(p); |
| 661 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(p); |
| 662 |
|
deleteEntry(p); |
| 663 |
|
return result; |
| 664 |
|
} |
| 665 |
|
|
| 700 |
– |
/** |
| 701 |
– |
* Removes and returns a key-value mapping associated with |
| 702 |
– |
* the greatest key in this map, or <tt>null</tt> if the map is empty. |
| 703 |
– |
* |
| 704 |
– |
* @return the removed last entry of this map, or <tt>null</tt> |
| 705 |
– |
* if the map is empty. |
| 706 |
– |
*/ |
| 666 |
|
public Map.Entry<K,V> pollLastEntry() { |
| 667 |
|
Entry<K,V> p = getLastEntry(); |
| 668 |
< |
if (p == null) |
| 668 |
> |
if (p == null) |
| 669 |
|
return null; |
| 670 |
< |
Map.Entry result = new SnapshotEntry(p); |
| 670 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(p); |
| 671 |
|
deleteEntry(p); |
| 672 |
|
return result; |
| 673 |
|
} |
| 674 |
|
|
| 675 |
|
/** |
| 676 |
< |
* Returns a key-value mapping associated with the least key |
| 677 |
< |
* greater than or equal to the given key, or <tt>null</tt> if |
| 678 |
< |
* there is no such entry. |
| 679 |
< |
* |
| 721 |
< |
* @param key the key. |
| 722 |
< |
* @return an Entry associated with ceiling of given key, or |
| 723 |
< |
* <tt>null</tt> if there is no such Entry. |
| 724 |
< |
* @throws ClassCastException if key cannot be compared with the |
| 725 |
< |
* keys currently in the map. |
| 726 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 727 |
< |
* natural order, or its comparator does not tolerate |
| 728 |
< |
* <tt>null</tt> keys. |
| 676 |
> |
* @throws ClassCastException {@inheritDoc} |
| 677 |
> |
* @throws NullPointerException if the specified key is null |
| 678 |
> |
* and this map uses natural ordering, or its comparator |
| 679 |
> |
* does not permit null keys |
| 680 |
|
*/ |
| 681 |
< |
public Map.Entry<K,V> ceilingEntry(K key) { |
| 682 |
< |
Entry<K,V> e = getCeilingEntry(key); |
| 683 |
< |
return (e == null)? null : new SnapshotEntry(e); |
| 681 |
> |
public Map.Entry<K,V> lowerEntry(K key) { |
| 682 |
> |
Entry<K,V> e = getLowerEntry(key); |
| 683 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 684 |
|
} |
| 685 |
|
|
| 735 |
– |
|
| 686 |
|
/** |
| 687 |
< |
* Returns least key greater than or equal to the given key, or |
| 688 |
< |
* <tt>null</tt> if there is no such key. |
| 689 |
< |
* |
| 690 |
< |
* @param key the key. |
| 741 |
< |
* @return the ceiling key, or <tt>null</tt> |
| 742 |
< |
* if there is no such key. |
| 743 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 744 |
< |
* currently in the map. |
| 745 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 746 |
< |
* natural order, or its comparator does not tolerate |
| 747 |
< |
* <tt>null</tt> keys. |
| 687 |
> |
* @throws ClassCastException {@inheritDoc} |
| 688 |
> |
* @throws NullPointerException if the specified key is null |
| 689 |
> |
* and this map uses natural ordering, or its comparator |
| 690 |
> |
* does not permit null keys |
| 691 |
|
*/ |
| 692 |
< |
public K ceilingKey(K key) { |
| 693 |
< |
Entry<K,V> e = getCeilingEntry(key); |
| 692 |
> |
public K lowerKey(K key) { |
| 693 |
> |
Entry<K,V> e = getLowerEntry(key); |
| 694 |
|
return (e == null)? null : e.key; |
| 695 |
|
} |
| 696 |
|
|
| 754 |
– |
|
| 755 |
– |
|
| 697 |
|
/** |
| 698 |
< |
* Returns a key-value mapping associated with the greatest key |
| 699 |
< |
* less than or equal to the given key, or <tt>null</tt> if there |
| 700 |
< |
* is no such entry. |
| 701 |
< |
* |
| 761 |
< |
* @param key the key. |
| 762 |
< |
* @return an Entry associated with floor of given key, or <tt>null</tt> |
| 763 |
< |
* if there is no such Entry. |
| 764 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 765 |
< |
* currently in the map. |
| 766 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 767 |
< |
* natural order, or its comparator does not tolerate |
| 768 |
< |
* <tt>null</tt> keys. |
| 698 |
> |
* @throws ClassCastException {@inheritDoc} |
| 699 |
> |
* @throws NullPointerException if the specified key is null |
| 700 |
> |
* and this map uses natural ordering, or its comparator |
| 701 |
> |
* does not permit null keys |
| 702 |
|
*/ |
| 703 |
|
public Map.Entry<K,V> floorEntry(K key) { |
| 704 |
|
Entry<K,V> e = getFloorEntry(key); |
| 705 |
< |
return (e == null)? null : new SnapshotEntry(e); |
| 705 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 706 |
|
} |
| 707 |
|
|
| 708 |
|
/** |
| 709 |
< |
* Returns the greatest key |
| 710 |
< |
* less than or equal to the given key, or <tt>null</tt> if there |
| 711 |
< |
* is no such key. |
| 712 |
< |
* |
| 780 |
< |
* @param key the key. |
| 781 |
< |
* @return the floor of given key, or <tt>null</tt> if there is no |
| 782 |
< |
* such key. |
| 783 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 784 |
< |
* currently in the map. |
| 785 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 786 |
< |
* natural order, or its comparator does not tolerate |
| 787 |
< |
* <tt>null</tt> keys. |
| 709 |
> |
* @throws ClassCastException {@inheritDoc} |
| 710 |
> |
* @throws NullPointerException if the specified key is null |
| 711 |
> |
* and this map uses natural ordering, or its comparator |
| 712 |
> |
* does not permit null keys |
| 713 |
|
*/ |
| 714 |
|
public K floorKey(K key) { |
| 715 |
|
Entry<K,V> e = getFloorEntry(key); |
| 717 |
|
} |
| 718 |
|
|
| 719 |
|
/** |
| 720 |
< |
* Returns a key-value mapping associated with the least key |
| 721 |
< |
* strictly greater than the given key, or <tt>null</tt> if there |
| 722 |
< |
* is no such entry. |
| 723 |
< |
* |
| 799 |
< |
* @param key the key. |
| 800 |
< |
* @return an Entry with least key greater than the given key, or |
| 801 |
< |
* <tt>null</tt> if there is no such Entry. |
| 802 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 803 |
< |
* currently in the map. |
| 804 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 805 |
< |
* natural order, or its comparator does not tolerate |
| 806 |
< |
* <tt>null</tt> keys. |
| 720 |
> |
* @throws ClassCastException {@inheritDoc} |
| 721 |
> |
* @throws NullPointerException if the specified key is null |
| 722 |
> |
* and this map uses natural ordering, or its comparator |
| 723 |
> |
* does not permit null keys |
| 724 |
|
*/ |
| 725 |
< |
public Map.Entry<K,V> higherEntry(K key) { |
| 726 |
< |
Entry<K,V> e = getHigherEntry(key); |
| 727 |
< |
return (e == null)? null : new SnapshotEntry(e); |
| 725 |
> |
public Map.Entry<K,V> ceilingEntry(K key) { |
| 726 |
> |
Entry<K,V> e = getCeilingEntry(key); |
| 727 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 728 |
|
} |
| 729 |
|
|
| 730 |
|
/** |
| 731 |
< |
* Returns the least key strictly greater than the given key, or |
| 732 |
< |
* <tt>null</tt> if there is no such key. |
| 733 |
< |
* |
| 734 |
< |
* @param key the key. |
| 818 |
< |
* @return the least key greater than the given key, or |
| 819 |
< |
* <tt>null</tt> if there is no such key. |
| 820 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 821 |
< |
* currently in the map. |
| 822 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 823 |
< |
* natural order, or its comparator does not tolerate |
| 824 |
< |
* <tt>null</tt> keys. |
| 731 |
> |
* @throws ClassCastException {@inheritDoc} |
| 732 |
> |
* @throws NullPointerException if the specified key is null |
| 733 |
> |
* and this map uses natural ordering, or its comparator |
| 734 |
> |
* does not permit null keys |
| 735 |
|
*/ |
| 736 |
< |
public K higherKey(K key) { |
| 737 |
< |
Entry<K,V> e = getHigherEntry(key); |
| 736 |
> |
public K ceilingKey(K key) { |
| 737 |
> |
Entry<K,V> e = getCeilingEntry(key); |
| 738 |
|
return (e == null)? null : e.key; |
| 739 |
|
} |
| 740 |
|
|
| 741 |
|
/** |
| 742 |
< |
* Returns a key-value mapping associated with the greatest |
| 743 |
< |
* key strictly less than the given key, or <tt>null</tt> if there is no |
| 744 |
< |
* such entry. |
| 745 |
< |
* |
| 836 |
< |
* @param key the key. |
| 837 |
< |
* @return an Entry with greatest key less than the given |
| 838 |
< |
* key, or <tt>null</tt> if there is no such Entry. |
| 839 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 840 |
< |
* currently in the map. |
| 841 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 842 |
< |
* natural order, or its comparator does not tolerate |
| 843 |
< |
* <tt>null</tt> keys. |
| 742 |
> |
* @throws ClassCastException {@inheritDoc} |
| 743 |
> |
* @throws NullPointerException if the specified key is null |
| 744 |
> |
* and this map uses natural ordering, or its comparator |
| 745 |
> |
* does not permit null keys |
| 746 |
|
*/ |
| 747 |
< |
public Map.Entry<K,V> lowerEntry(K key) { |
| 748 |
< |
Entry<K,V> e = getLowerEntry(key); |
| 749 |
< |
return (e == null)? null : new SnapshotEntry(e); |
| 747 |
> |
public Map.Entry<K,V> higherEntry(K key) { |
| 748 |
> |
Entry<K,V> e = getHigherEntry(key); |
| 749 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 750 |
|
} |
| 751 |
|
|
| 752 |
|
/** |
| 753 |
< |
* Returns the greatest key strictly less than the given key, or |
| 754 |
< |
* <tt>null</tt> if there is no such key. |
| 755 |
< |
* |
| 756 |
< |
* @param key the key. |
| 855 |
< |
* @return the greatest key less than the given |
| 856 |
< |
* key, or <tt>null</tt> if there is no such key. |
| 857 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
| 858 |
< |
* currently in the map. |
| 859 |
< |
* @throws NullPointerException key is <tt>null</tt> and this map uses |
| 860 |
< |
* natural order, or its comparator does not tolerate |
| 861 |
< |
* <tt>null</tt> keys. |
| 753 |
> |
* @throws ClassCastException {@inheritDoc} |
| 754 |
> |
* @throws NullPointerException if the specified key is null |
| 755 |
> |
* and this map uses natural ordering, or its comparator |
| 756 |
> |
* does not permit null keys |
| 757 |
|
*/ |
| 758 |
< |
public K lowerKey(K key) { |
| 759 |
< |
Entry<K,V> e = getLowerEntry(key); |
| 758 |
> |
public K higherKey(K key) { |
| 759 |
> |
Entry<K,V> e = getHigherEntry(key); |
| 760 |
|
return (e == null)? null : e.key; |
| 761 |
|
} |
| 762 |
|
|
| 769 |
|
*/ |
| 770 |
|
private transient Set<Map.Entry<K,V>> entrySet = null; |
| 771 |
|
private transient Set<Map.Entry<K,V>> descendingEntrySet = null; |
| 772 |
< |
private transient Set<K> descendingKeySet = null; |
| 878 |
< |
|
| 879 |
< |
transient Set<K> keySet = null; // XXX remove when integrated |
| 880 |
< |
transient Collection<V> values = null; // XXX remove when integrated |
| 772 |
> |
private transient Set<K> descendingKeySet = null; |
| 773 |
|
|
| 774 |
|
/** |
| 775 |
< |
* Returns a Set view of the keys contained in this map. The set's |
| 776 |
< |
* iterator will return the keys in ascending order. The set is backed by |
| 777 |
< |
* this <tt>TreeMap</tt> instance, so changes to this map are reflected in |
| 778 |
< |
* the Set, and vice-versa. The Set supports element removal, which |
| 779 |
< |
* removes the corresponding mapping from the map, via the |
| 780 |
< |
* <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, <tt>removeAll</tt>, |
| 781 |
< |
* <tt>retainAll</tt>, and <tt>clear</tt> operations. It does not support |
| 782 |
< |
* the <tt>add</tt> or <tt>addAll</tt> operations. |
| 783 |
< |
* |
| 784 |
< |
* @return a set view of the keys contained in this TreeMap. |
| 775 |
> |
* Returns a {@link Set} view of the keys contained in this map. |
| 776 |
> |
* The set's iterator returns the keys in ascending order. |
| 777 |
> |
* The set is backed by the map, so changes to the map are |
| 778 |
> |
* reflected in the set, and vice-versa. If the map is modified |
| 779 |
> |
* while an iteration over the set is in progress (except through |
| 780 |
> |
* the iterator's own <tt>remove</tt> operation), the results of |
| 781 |
> |
* the iteration are undefined. The set supports element removal, |
| 782 |
> |
* which removes the corresponding mapping from the map, via the |
| 783 |
> |
* <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, |
| 784 |
> |
* <tt>removeAll</tt>, <tt>retainAll</tt>, and <tt>clear</tt> |
| 785 |
> |
* operations. It does not support the <tt>add</tt> or <tt>addAll</tt> |
| 786 |
> |
* operations. |
| 787 |
|
*/ |
| 788 |
|
public Set<K> keySet() { |
| 789 |
|
Set<K> ks = keySet; |
| 794 |
|
public Iterator<K> iterator() { |
| 795 |
|
return new KeyIterator(getFirstEntry()); |
| 796 |
|
} |
| 797 |
< |
|
| 797 |
> |
|
| 798 |
|
public int size() { |
| 799 |
|
return TreeMap.this.size(); |
| 800 |
|
} |
| 801 |
< |
|
| 801 |
> |
|
| 802 |
|
public boolean contains(Object o) { |
| 803 |
|
return containsKey(o); |
| 804 |
|
} |
| 805 |
< |
|
| 805 |
> |
|
| 806 |
|
public boolean remove(Object o) { |
| 807 |
|
int oldSize = size; |
| 808 |
|
TreeMap.this.remove(o); |
| 809 |
|
return size != oldSize; |
| 810 |
|
} |
| 811 |
< |
|
| 811 |
> |
|
| 812 |
|
public void clear() { |
| 813 |
|
TreeMap.this.clear(); |
| 814 |
|
} |
| 815 |
|
} |
| 816 |
|
|
| 817 |
|
/** |
| 818 |
< |
* Returns a collection view of the values contained in this map. The |
| 819 |
< |
* collection's iterator will return the values in the order that their |
| 820 |
< |
* corresponding keys appear in the tree. The collection is backed by |
| 821 |
< |
* this <tt>TreeMap</tt> instance, so changes to this map are reflected in |
| 822 |
< |
* the collection, and vice-versa. The collection supports element |
| 823 |
< |
* removal, which removes the corresponding mapping from the map through |
| 824 |
< |
* the <tt>Iterator.remove</tt>, <tt>Collection.remove</tt>, |
| 825 |
< |
* <tt>removeAll</tt>, <tt>retainAll</tt>, and <tt>clear</tt> operations. |
| 826 |
< |
* It does not support the <tt>add</tt> or <tt>addAll</tt> operations. |
| 827 |
< |
* |
| 828 |
< |
* @return a collection view of the values contained in this map. |
| 818 |
> |
* Returns a {@link Collection} view of the values contained in this map. |
| 819 |
> |
* The collection's iterator returns the values in ascending order |
| 820 |
> |
* of the corresponding keys. |
| 821 |
> |
* The collection is backed by the map, so changes to the map are |
| 822 |
> |
* reflected in the collection, and vice-versa. If the map is |
| 823 |
> |
* modified while an iteration over the collection is in progress |
| 824 |
> |
* (except through the iterator's own <tt>remove</tt> operation), |
| 825 |
> |
* the results of the iteration are undefined. The collection |
| 826 |
> |
* supports element removal, which removes the corresponding |
| 827 |
> |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
| 828 |
> |
* <tt>Collection.remove</tt>, <tt>removeAll</tt>, |
| 829 |
> |
* <tt>retainAll</tt> and <tt>clear</tt> operations. It does not |
| 830 |
> |
* support the <tt>add</tt> or <tt>addAll</tt> operations. |
| 831 |
|
*/ |
| 832 |
|
public Collection<V> values() { |
| 833 |
|
Collection<V> vs = values; |
| 838 |
|
public Iterator<V> iterator() { |
| 839 |
|
return new ValueIterator(getFirstEntry()); |
| 840 |
|
} |
| 841 |
< |
|
| 841 |
> |
|
| 842 |
|
public int size() { |
| 843 |
|
return TreeMap.this.size(); |
| 844 |
|
} |
| 845 |
< |
|
| 845 |
> |
|
| 846 |
|
public boolean contains(Object o) { |
| 847 |
|
for (Entry<K,V> e = getFirstEntry(); e != null; e = successor(e)) |
| 848 |
|
if (valEquals(e.getValue(), o)) |
| 849 |
|
return true; |
| 850 |
|
return false; |
| 851 |
|
} |
| 852 |
< |
|
| 852 |
> |
|
| 853 |
|
public boolean remove(Object o) { |
| 854 |
|
for (Entry<K,V> e = getFirstEntry(); e != null; e = successor(e)) { |
| 855 |
|
if (valEquals(e.getValue(), o)) { |
| 859 |
|
} |
| 860 |
|
return false; |
| 861 |
|
} |
| 862 |
< |
|
| 862 |
> |
|
| 863 |
|
public void clear() { |
| 864 |
|
TreeMap.this.clear(); |
| 865 |
|
} |
| 866 |
|
} |
| 867 |
|
|
| 868 |
|
/** |
| 869 |
< |
* Returns a set view of the mappings contained in this map. The set's |
| 870 |
< |
* iterator returns the mappings in ascending key order. Each element in |
| 871 |
< |
* the returned set is a <tt>Map.Entry</tt>. The set is backed by this |
| 872 |
< |
* map, so changes to this map are reflected in the set, and vice-versa. |
| 873 |
< |
* The set supports element removal, which removes the corresponding |
| 874 |
< |
* mapping from the TreeMap, through the <tt>Iterator.remove</tt>, |
| 869 |
> |
* Returns a {@link Set} view of the mappings contained in this map. |
| 870 |
> |
* The set's iterator returns the entries in ascending key order. |
| 871 |
> |
* The set is backed by the map, so changes to the map are |
| 872 |
> |
* reflected in the set, and vice-versa. If the map is modified |
| 873 |
> |
* while an iteration over the set is in progress (except through |
| 874 |
> |
* the iterator's own <tt>remove</tt> operation, or through the |
| 875 |
> |
* <tt>setValue</tt> operation on a map entry returned by the |
| 876 |
> |
* iterator) the results of the iteration are undefined. The set |
| 877 |
> |
* supports element removal, which removes the corresponding |
| 878 |
> |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
| 879 |
|
* <tt>Set.remove</tt>, <tt>removeAll</tt>, <tt>retainAll</tt> and |
| 880 |
< |
* <tt>clear</tt> operations. It does not support the <tt>add</tt> or |
| 881 |
< |
* <tt>addAll</tt> operations. |
| 982 |
< |
* |
| 983 |
< |
* @return a set view of the mappings contained in this map. |
| 984 |
< |
* @see Map.Entry |
| 880 |
> |
* <tt>clear</tt> operations. It does not support the |
| 881 |
> |
* <tt>add</tt> or <tt>addAll</tt> operations. |
| 882 |
|
*/ |
| 883 |
|
public Set<Map.Entry<K,V>> entrySet() { |
| 884 |
|
Set<Map.Entry<K,V>> es = entrySet; |
| 889 |
|
public Iterator<Map.Entry<K,V>> iterator() { |
| 890 |
|
return new EntryIterator(getFirstEntry()); |
| 891 |
|
} |
| 892 |
< |
|
| 892 |
> |
|
| 893 |
|
public boolean contains(Object o) { |
| 894 |
|
if (!(o instanceof Map.Entry)) |
| 895 |
|
return false; |
| 898 |
|
Entry<K,V> p = getEntry(entry.getKey()); |
| 899 |
|
return p != null && valEquals(p.getValue(), value); |
| 900 |
|
} |
| 901 |
< |
|
| 901 |
> |
|
| 902 |
|
public boolean remove(Object o) { |
| 903 |
|
if (!(o instanceof Map.Entry)) |
| 904 |
|
return false; |
| 911 |
|
} |
| 912 |
|
return false; |
| 913 |
|
} |
| 914 |
< |
|
| 914 |
> |
|
| 915 |
|
public int size() { |
| 916 |
|
return TreeMap.this.size(); |
| 917 |
|
} |
| 918 |
< |
|
| 918 |
> |
|
| 919 |
|
public void clear() { |
| 920 |
|
TreeMap.this.clear(); |
| 921 |
|
} |
| 922 |
|
} |
| 923 |
|
|
| 1027 |
– |
/** |
| 1028 |
– |
* Returns a set view of the mappings contained in this map. The |
| 1029 |
– |
* set's iterator returns the mappings in descrending key order. |
| 1030 |
– |
* Each element in the returned set is a <tt>Map.Entry</tt>. The |
| 1031 |
– |
* set is backed by this map, so changes to this map are reflected |
| 1032 |
– |
* in the set, and vice-versa. The set supports element removal, |
| 1033 |
– |
* which removes the corresponding mapping from the TreeMap, |
| 1034 |
– |
* through the <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, |
| 1035 |
– |
* <tt>removeAll</tt>, <tt>retainAll</tt> and <tt>clear</tt> |
| 1036 |
– |
* operations. It does not support the <tt>add</tt> or |
| 1037 |
– |
* <tt>addAll</tt> operations. |
| 1038 |
– |
* |
| 1039 |
– |
* @return a set view of the mappings contained in this map, in |
| 1040 |
– |
* descending key order |
| 1041 |
– |
* @see Map.Entry |
| 1042 |
– |
*/ |
| 924 |
|
public Set<Map.Entry<K,V>> descendingEntrySet() { |
| 925 |
|
Set<Map.Entry<K,V>> es = descendingEntrySet; |
| 926 |
|
return (es != null) ? es : (descendingEntrySet = new DescendingEntrySet()); |
| 932 |
|
} |
| 933 |
|
} |
| 934 |
|
|
| 1054 |
– |
/** |
| 1055 |
– |
* Returns a Set view of the keys contained in this map. The |
| 1056 |
– |
* set's iterator will return the keys in descending order. The |
| 1057 |
– |
* map is backed by this <tt>TreeMap</tt> instance, so changes to |
| 1058 |
– |
* this map are reflected in the Set, and vice-versa. The Set |
| 1059 |
– |
* supports element removal, which removes the corresponding |
| 1060 |
– |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
| 1061 |
– |
* <tt>Set.remove</tt>, <tt>removeAll</tt>, <tt>retainAll</tt>, |
| 1062 |
– |
* and <tt>clear</tt> operations. It does not support the |
| 1063 |
– |
* <tt>add</tt> or <tt>addAll</tt> operations. |
| 1064 |
– |
* |
| 1065 |
– |
* @return a set view of the keys contained in this TreeMap. |
| 1066 |
– |
*/ |
| 935 |
|
public Set<K> descendingKeySet() { |
| 936 |
|
Set<K> ks = descendingKeySet; |
| 937 |
|
return (ks != null) ? ks : (descendingKeySet = new DescendingKeySet()); |
| 944 |
|
} |
| 945 |
|
|
| 946 |
|
/** |
| 947 |
< |
* Returns a view of the portion of this map whose keys range from |
| 1080 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. (If |
| 1081 |
< |
* <tt>fromKey</tt> and <tt>toKey</tt> are equal, the returned sorted map |
| 1082 |
< |
* is empty.) The returned sorted map is backed by this map, so changes |
| 1083 |
< |
* in the returned sorted map are reflected in this map, and vice-versa. |
| 1084 |
< |
* The returned sorted map supports all optional map operations.<p> |
| 1085 |
< |
* |
| 1086 |
< |
* The sorted map returned by this method will throw an |
| 1087 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
| 1088 |
< |
* less than <tt>fromKey</tt> or greater than or equal to |
| 1089 |
< |
* <tt>toKey</tt>.<p> |
| 1090 |
< |
* |
| 1091 |
< |
* Note: this method always returns a <i>half-open range</i> (which |
| 1092 |
< |
* includes its low endpoint but not its high endpoint). If you need a |
| 1093 |
< |
* <i>closed range</i> (which includes both endpoints), and the key type |
| 1094 |
< |
* allows for calculation of the successor a given key, merely request the |
| 1095 |
< |
* subrange from <tt>lowEndpoint</tt> to <tt>successor(highEndpoint)</tt>. |
| 1096 |
< |
* For example, suppose that <tt>m</tt> is a sorted map whose keys are |
| 1097 |
< |
* strings. The following idiom obtains a view containing all of the |
| 1098 |
< |
* key-value mappings in <tt>m</tt> whose keys are between <tt>low</tt> |
| 1099 |
< |
* and <tt>high</tt>, inclusive: |
| 1100 |
< |
* <pre> NavigableMap sub = m.submap(low, high+"\0");</pre> |
| 1101 |
< |
* A similar technique can be used to generate an <i>open range</i> (which |
| 1102 |
< |
* contains neither endpoint). The following idiom obtains a view |
| 1103 |
< |
* containing all of the key-value mappings in <tt>m</tt> whose keys are |
| 1104 |
< |
* between <tt>low</tt> and <tt>high</tt>, exclusive: |
| 1105 |
< |
* <pre> NavigableMap sub = m.subMap(low+"\0", high);</pre> |
| 1106 |
< |
* |
| 1107 |
< |
* @param fromKey low endpoint (inclusive) of the subMap. |
| 1108 |
< |
* @param toKey high endpoint (exclusive) of the subMap. |
| 1109 |
< |
* |
| 1110 |
< |
* @return a view of the portion of this map whose keys range from |
| 1111 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. |
| 1112 |
< |
* |
| 1113 |
< |
* @throws ClassCastException if <tt>fromKey</tt> and <tt>toKey</tt> |
| 1114 |
< |
* cannot be compared to one another using this map's comparator |
| 1115 |
< |
* (or, if the map has no comparator, using natural ordering). |
| 1116 |
< |
* @throws IllegalArgumentException if <tt>fromKey</tt> is greater than |
| 1117 |
< |
* <tt>toKey</tt>. |
| 947 |
> |
* @throws ClassCastException {@inheritDoc} |
| 948 |
|
* @throws NullPointerException if <tt>fromKey</tt> or <tt>toKey</tt> is |
| 949 |
< |
* <tt>null</tt> and this map uses natural order, or its |
| 950 |
< |
* comparator does not tolerate <tt>null</tt> keys. |
| 949 |
> |
* null and this map uses natural ordering, or its comparator |
| 950 |
> |
* does not permit null keys |
| 951 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
| 952 |
|
*/ |
| 953 |
< |
public NavigableMap<K,V> subMap(K fromKey, K toKey) { |
| 953 |
> |
public NavigableMap<K,V> navigableSubMap(K fromKey, K toKey) { |
| 954 |
|
return new SubMap(fromKey, toKey); |
| 955 |
|
} |
| 956 |
|
|
| 957 |
|
/** |
| 958 |
< |
* Returns a view of the portion of this map whose keys are strictly less |
| 959 |
< |
* than <tt>toKey</tt>. The returned sorted map is backed by this map, so |
| 960 |
< |
* changes in the returned sorted map are reflected in this map, and |
| 961 |
< |
* vice-versa. The returned sorted map supports all optional map |
| 962 |
< |
* operations.<p> |
| 1132 |
< |
* |
| 1133 |
< |
* The sorted map returned by this method will throw an |
| 1134 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
| 1135 |
< |
* greater than or equal to <tt>toKey</tt>.<p> |
| 1136 |
< |
* |
| 1137 |
< |
* Note: this method always returns a view that does not contain its |
| 1138 |
< |
* (high) endpoint. If you need a view that does contain this endpoint, |
| 1139 |
< |
* and the key type allows for calculation of the successor a given key, |
| 1140 |
< |
* merely request a headMap bounded by <tt>successor(highEndpoint)</tt>. |
| 1141 |
< |
* For example, suppose that suppose that <tt>m</tt> is a sorted map whose |
| 1142 |
< |
* keys are strings. The following idiom obtains a view containing all of |
| 1143 |
< |
* the key-value mappings in <tt>m</tt> whose keys are less than or equal |
| 1144 |
< |
* to <tt>high</tt>: |
| 1145 |
< |
* <pre> |
| 1146 |
< |
* NavigableMap head = m.headMap(high+"\0"); |
| 1147 |
< |
* </pre> |
| 1148 |
< |
* |
| 1149 |
< |
* @param toKey high endpoint (exclusive) of the headMap. |
| 1150 |
< |
* @return a view of the portion of this map whose keys are strictly |
| 1151 |
< |
* less than <tt>toKey</tt>. |
| 1152 |
< |
* |
| 1153 |
< |
* @throws ClassCastException if <tt>toKey</tt> is not compatible |
| 1154 |
< |
* with this map's comparator (or, if the map has no comparator, |
| 1155 |
< |
* if <tt>toKey</tt> does not implement <tt>Comparable</tt>). |
| 1156 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
| 1157 |
< |
* headMap, or tailMap, and <tt>toKey</tt> is not within the |
| 1158 |
< |
* specified range of the subMap, headMap, or tailMap. |
| 1159 |
< |
* @throws NullPointerException if <tt>toKey</tt> is <tt>null</tt> and |
| 1160 |
< |
* this map uses natural order, or its comparator does not |
| 1161 |
< |
* tolerate <tt>null</tt> keys. |
| 958 |
> |
* @throws ClassCastException {@inheritDoc} |
| 959 |
> |
* @throws NullPointerException if <tt>toKey</tt> is null |
| 960 |
> |
* and this map uses natural ordering, or its comparator |
| 961 |
> |
* does not permit null keys |
| 962 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
| 963 |
|
*/ |
| 964 |
< |
public NavigableMap<K,V> headMap(K toKey) { |
| 964 |
> |
public NavigableMap<K,V> navigableHeadMap(K toKey) { |
| 965 |
|
return new SubMap(toKey, true); |
| 966 |
|
} |
| 967 |
|
|
| 968 |
|
/** |
| 969 |
< |
* Returns a view of the portion of this map whose keys are greater than |
| 970 |
< |
* or equal to <tt>fromKey</tt>. The returned sorted map is backed by |
| 971 |
< |
* this map, so changes in the returned sorted map are reflected in this |
| 972 |
< |
* map, and vice-versa. The returned sorted map supports all optional map |
| 973 |
< |
* operations.<p> |
| 1173 |
< |
* |
| 1174 |
< |
* The sorted map returned by this method will throw an |
| 1175 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
| 1176 |
< |
* less than <tt>fromKey</tt>.<p> |
| 1177 |
< |
* |
| 1178 |
< |
* Note: this method always returns a view that contains its (low) |
| 1179 |
< |
* endpoint. If you need a view that does not contain this endpoint, and |
| 1180 |
< |
* the element type allows for calculation of the successor a given value, |
| 1181 |
< |
* merely request a tailMap bounded by <tt>successor(lowEndpoint)</tt>. |
| 1182 |
< |
* For example, suppose that <tt>m</tt> is a sorted map whose keys |
| 1183 |
< |
* are strings. The following idiom obtains a view containing |
| 1184 |
< |
* all of the key-value mappings in <tt>m</tt> whose keys are strictly |
| 1185 |
< |
* greater than <tt>low</tt>: <pre> |
| 1186 |
< |
* NavigableMap tail = m.tailMap(low+"\0"); |
| 1187 |
< |
* </pre> |
| 1188 |
< |
* |
| 1189 |
< |
* @param fromKey low endpoint (inclusive) of the tailMap. |
| 1190 |
< |
* @return a view of the portion of this map whose keys are greater |
| 1191 |
< |
* than or equal to <tt>fromKey</tt>. |
| 1192 |
< |
* @throws ClassCastException if <tt>fromKey</tt> is not compatible |
| 1193 |
< |
* with this map's comparator (or, if the map has no comparator, |
| 1194 |
< |
* if <tt>fromKey</tt> does not implement <tt>Comparable</tt>). |
| 1195 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
| 1196 |
< |
* headMap, or tailMap, and <tt>fromKey</tt> is not within the |
| 1197 |
< |
* specified range of the subMap, headMap, or tailMap. |
| 1198 |
< |
* @throws NullPointerException if <tt>fromKey</tt> is <tt>null</tt> and |
| 1199 |
< |
* this map uses natural order, or its comparator does not |
| 1200 |
< |
* tolerate <tt>null</tt> keys. |
| 969 |
> |
* @throws ClassCastException {@inheritDoc} |
| 970 |
> |
* @throws NullPointerException if <tt>fromKey</tt> is null |
| 971 |
> |
* and this map uses natural ordering, or its comparator |
| 972 |
> |
* does not permit null keys |
| 973 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
| 974 |
|
*/ |
| 975 |
< |
public NavigableMap<K,V> tailMap(K fromKey) { |
| 975 |
> |
public NavigableMap<K,V> navigableTailMap(K fromKey) { |
| 976 |
> |
return new SubMap(fromKey, false); |
| 977 |
> |
} |
| 978 |
> |
|
| 979 |
> |
/** |
| 980 |
> |
* Equivalent to {@link #navigableSubMap} but with a return type |
| 981 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
| 982 |
> |
* |
| 983 |
> |
* <p>{@inheritDoc} |
| 984 |
> |
* |
| 985 |
> |
* @throws ClassCastException {@inheritDoc} |
| 986 |
> |
* @throws NullPointerException if <tt>fromKey</tt> or <tt>toKey</tt> is |
| 987 |
> |
* null and this map uses natural ordering, or its comparator |
| 988 |
> |
* does not permit null keys |
| 989 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
| 990 |
> |
*/ |
| 991 |
> |
public SortedMap<K,V> subMap(K fromKey, K toKey) { |
| 992 |
> |
return new SubMap(fromKey, toKey); |
| 993 |
> |
} |
| 994 |
> |
|
| 995 |
> |
/** |
| 996 |
> |
* Equivalent to {@link #navigableHeadMap} but with a return type |
| 997 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
| 998 |
> |
* |
| 999 |
> |
* <p>{@inheritDoc} |
| 1000 |
> |
* |
| 1001 |
> |
* @throws ClassCastException {@inheritDoc} |
| 1002 |
> |
* @throws NullPointerException if <tt>toKey</tt> is null |
| 1003 |
> |
* and this map uses natural ordering, or its comparator |
| 1004 |
> |
* does not permit null keys |
| 1005 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
| 1006 |
> |
*/ |
| 1007 |
> |
public SortedMap<K,V> headMap(K toKey) { |
| 1008 |
> |
return new SubMap(toKey, true); |
| 1009 |
> |
} |
| 1010 |
> |
|
| 1011 |
> |
/** |
| 1012 |
> |
* Equivalent to {@link #navigableTailMap} but with a return type |
| 1013 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
| 1014 |
> |
* |
| 1015 |
> |
* <p>{@inheritDoc} |
| 1016 |
> |
* |
| 1017 |
> |
* @throws ClassCastException {@inheritDoc} |
| 1018 |
> |
* @throws NullPointerException if <tt>fromKey</tt> is null |
| 1019 |
> |
* and this map uses natural ordering, or its comparator |
| 1020 |
> |
* does not permit null keys |
| 1021 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
| 1022 |
> |
*/ |
| 1023 |
> |
public SortedMap<K,V> tailMap(K fromKey) { |
| 1024 |
|
return new SubMap(fromKey, false); |
| 1025 |
|
} |
| 1026 |
|
|
| 1063 |
|
} |
| 1064 |
|
|
| 1065 |
|
public boolean isEmpty() { |
| 1066 |
< |
return entrySet.isEmpty(); |
| 1066 |
> |
return entrySet().isEmpty(); |
| 1067 |
|
} |
| 1068 |
|
|
| 1069 |
|
public boolean containsKey(Object key) { |
| 1070 |
< |
return inRange((K) key) && TreeMap.this.containsKey(key); |
| 1070 |
> |
return inRange(key) && TreeMap.this.containsKey(key); |
| 1071 |
|
} |
| 1072 |
|
|
| 1073 |
|
public V get(Object key) { |
| 1074 |
< |
if (!inRange((K) key)) |
| 1074 |
> |
if (!inRange(key)) |
| 1075 |
|
return null; |
| 1076 |
|
return TreeMap.this.get(key); |
| 1077 |
|
} |
| 1083 |
|
} |
| 1084 |
|
|
| 1085 |
|
public V remove(Object key) { |
| 1086 |
< |
if (!inRange((K) key)) |
| 1086 |
> |
if (!inRange(key)) |
| 1087 |
|
return null; |
| 1088 |
|
return TreeMap.this.remove(key); |
| 1089 |
|
} |
| 1096 |
|
TreeMap.Entry<K,V> e = fromStart ? getFirstEntry() : getCeilingEntry(fromKey); |
| 1097 |
|
K first = key(e); |
| 1098 |
|
if (!toEnd && compare(first, toKey) >= 0) |
| 1099 |
< |
throw(new NoSuchElementException()); |
| 1099 |
> |
throw new NoSuchElementException(); |
| 1100 |
|
return first; |
| 1101 |
|
} |
| 1102 |
|
|
| 1104 |
|
TreeMap.Entry<K,V> e = toEnd ? getLastEntry() : getLowerEntry(toKey); |
| 1105 |
|
K last = key(e); |
| 1106 |
|
if (!fromStart && compare(last, fromKey) < 0) |
| 1107 |
< |
throw(new NoSuchElementException()); |
| 1107 |
> |
throw new NoSuchElementException(); |
| 1108 |
|
return last; |
| 1109 |
|
} |
| 1110 |
|
|
| 1111 |
|
public Map.Entry<K,V> firstEntry() { |
| 1112 |
< |
TreeMap.Entry<K,V> e = fromStart ? |
| 1112 |
> |
TreeMap.Entry<K,V> e = fromStart ? |
| 1113 |
|
getFirstEntry() : getCeilingEntry(fromKey); |
| 1114 |
|
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
| 1115 |
|
return null; |
| 1117 |
|
} |
| 1118 |
|
|
| 1119 |
|
public Map.Entry<K,V> lastEntry() { |
| 1120 |
< |
TreeMap.Entry<K,V> e = toEnd ? |
| 1120 |
> |
TreeMap.Entry<K,V> e = toEnd ? |
| 1121 |
|
getLastEntry() : getLowerEntry(toKey); |
| 1122 |
|
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
| 1123 |
|
return null; |
| 1125 |
|
} |
| 1126 |
|
|
| 1127 |
|
public Map.Entry<K,V> pollFirstEntry() { |
| 1128 |
< |
TreeMap.Entry<K,V> e = fromStart ? |
| 1128 |
> |
TreeMap.Entry<K,V> e = fromStart ? |
| 1129 |
|
getFirstEntry() : getCeilingEntry(fromKey); |
| 1130 |
< |
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
| 1130 |
> |
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
| 1131 |
|
return null; |
| 1132 |
< |
Map.Entry result = new SnapshotEntry(e); |
| 1132 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 1133 |
|
deleteEntry(e); |
| 1134 |
|
return result; |
| 1135 |
|
} |
| 1136 |
|
|
| 1137 |
|
public Map.Entry<K,V> pollLastEntry() { |
| 1138 |
< |
TreeMap.Entry<K,V> e = toEnd ? |
| 1138 |
> |
TreeMap.Entry<K,V> e = toEnd ? |
| 1139 |
|
getLastEntry() : getLowerEntry(toKey); |
| 1140 |
< |
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
| 1140 |
> |
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
| 1141 |
|
return null; |
| 1142 |
< |
Map.Entry result = new SnapshotEntry(e); |
| 1142 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 1143 |
|
deleteEntry(e); |
| 1144 |
|
return result; |
| 1145 |
|
} |
| 1154 |
|
|
| 1155 |
|
public Map.Entry<K,V> ceilingEntry(K key) { |
| 1156 |
|
TreeMap.Entry<K,V> e = subceiling(key); |
| 1157 |
< |
return e == null? null : new SnapshotEntry(e); |
| 1157 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 1158 |
|
} |
| 1159 |
|
|
| 1160 |
|
public K ceilingKey(K key) { |
| 1173 |
|
|
| 1174 |
|
public Map.Entry<K,V> higherEntry(K key) { |
| 1175 |
|
TreeMap.Entry<K,V> e = subhigher(key); |
| 1176 |
< |
return e == null? null : new SnapshotEntry(e); |
| 1176 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 1177 |
|
} |
| 1178 |
|
|
| 1179 |
|
public K higherKey(K key) { |
| 1191 |
|
|
| 1192 |
|
public Map.Entry<K,V> floorEntry(K key) { |
| 1193 |
|
TreeMap.Entry<K,V> e = subfloor(key); |
| 1194 |
< |
return e == null? null : new SnapshotEntry(e); |
| 1194 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 1195 |
|
} |
| 1196 |
|
|
| 1197 |
|
public K floorKey(K key) { |
| 1209 |
|
|
| 1210 |
|
public Map.Entry<K,V> lowerEntry(K key) { |
| 1211 |
|
TreeMap.Entry<K,V> e = sublower(key); |
| 1212 |
< |
return e == null? null : new SnapshotEntry(e); |
| 1212 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
| 1213 |
|
} |
| 1214 |
|
|
| 1215 |
|
public K lowerKey(K key) { |
| 1217 |
|
return e == null? null : e.key; |
| 1218 |
|
} |
| 1219 |
|
|
| 1220 |
< |
private transient Set<Map.Entry<K,V>> entrySet = new EntrySetView(); |
| 1220 |
> |
private transient Set<Map.Entry<K,V>> entrySet = null; |
| 1221 |
|
|
| 1222 |
|
public Set<Map.Entry<K,V>> entrySet() { |
| 1223 |
< |
return entrySet; |
| 1223 |
> |
Set<Map.Entry<K,V>> es = entrySet; |
| 1224 |
> |
return (es != null)? es : (entrySet = new EntrySetView()); |
| 1225 |
|
} |
| 1226 |
|
|
| 1227 |
|
private class EntrySetView extends AbstractSet<Map.Entry<K,V>> { |
| 1278 |
|
} |
| 1279 |
|
|
| 1280 |
|
private transient Set<Map.Entry<K,V>> descendingEntrySetView = null; |
| 1281 |
< |
private transient Set<K> descendingKeySetView = null; |
| 1281 |
> |
private transient Set<K> descendingKeySetView = null; |
| 1282 |
|
|
| 1283 |
|
public Set<Map.Entry<K,V>> descendingEntrySet() { |
| 1284 |
|
Set<Map.Entry<K,V>> es = descendingEntrySetView; |
| 1285 |
< |
return (es != null) ? es : (descendingEntrySetView = new DescendingEntrySetView()); |
| 1285 |
> |
return (es != null) ? es : |
| 1286 |
> |
(descendingEntrySetView = new DescendingEntrySetView()); |
| 1287 |
|
} |
| 1288 |
|
|
| 1289 |
|
public Set<K> descendingKeySet() { |
| 1290 |
|
Set<K> ks = descendingKeySetView; |
| 1291 |
< |
return (ks != null) ? ks : (descendingKeySetView = new DescendingKeySetView()); |
| 1291 |
> |
return (ks != null) ? ks : |
| 1292 |
> |
(descendingKeySetView = new DescendingKeySetView()); |
| 1293 |
|
} |
| 1294 |
|
|
| 1295 |
|
private class DescendingEntrySetView extends EntrySetView { |
| 1304 |
|
public Iterator<K> iterator() { |
| 1305 |
|
return new Iterator<K>() { |
| 1306 |
|
private Iterator<Entry<K,V>> i = descendingEntrySet().iterator(); |
| 1307 |
< |
|
| 1307 |
> |
|
| 1308 |
|
public boolean hasNext() { return i.hasNext(); } |
| 1309 |
|
public K next() { return i.next().getKey(); } |
| 1310 |
|
public void remove() { i.remove(); } |
| 1311 |
|
}; |
| 1312 |
|
} |
| 1313 |
< |
|
| 1313 |
> |
|
| 1314 |
|
public int size() { |
| 1315 |
|
return SubMap.this.size(); |
| 1316 |
|
} |
| 1317 |
< |
|
| 1317 |
> |
|
| 1318 |
|
public boolean contains(Object k) { |
| 1319 |
|
return SubMap.this.containsKey(k); |
| 1320 |
|
} |
| 1321 |
|
} |
| 1322 |
|
|
| 1323 |
< |
|
| 1500 |
< |
public NavigableMap<K,V> subMap(K fromKey, K toKey) { |
| 1323 |
> |
public NavigableMap<K,V> navigableSubMap(K fromKey, K toKey) { |
| 1324 |
|
if (!inRange2(fromKey)) |
| 1325 |
|
throw new IllegalArgumentException("fromKey out of range"); |
| 1326 |
|
if (!inRange2(toKey)) |
| 1328 |
|
return new SubMap(fromKey, toKey); |
| 1329 |
|
} |
| 1330 |
|
|
| 1331 |
< |
public NavigableMap<K,V> headMap(K toKey) { |
| 1331 |
> |
public NavigableMap<K,V> navigableHeadMap(K toKey) { |
| 1332 |
|
if (!inRange2(toKey)) |
| 1333 |
|
throw new IllegalArgumentException("toKey out of range"); |
| 1334 |
|
return new SubMap(fromStart, fromKey, false, toKey); |
| 1335 |
|
} |
| 1336 |
|
|
| 1337 |
< |
public NavigableMap<K,V> tailMap(K fromKey) { |
| 1337 |
> |
public NavigableMap<K,V> navigableTailMap(K fromKey) { |
| 1338 |
|
if (!inRange2(fromKey)) |
| 1339 |
|
throw new IllegalArgumentException("fromKey out of range"); |
| 1340 |
|
return new SubMap(false, fromKey, toEnd, toKey); |
| 1341 |
|
} |
| 1342 |
|
|
| 1343 |
< |
private boolean inRange(K key) { |
| 1343 |
> |
public SortedMap<K,V> subMap(K fromKey, K toKey) { |
| 1344 |
> |
return navigableSubMap(fromKey, toKey); |
| 1345 |
> |
} |
| 1346 |
> |
|
| 1347 |
> |
public SortedMap<K,V> headMap(K toKey) { |
| 1348 |
> |
return navigableHeadMap(toKey); |
| 1349 |
> |
} |
| 1350 |
> |
|
| 1351 |
> |
public SortedMap<K,V> tailMap(K fromKey) { |
| 1352 |
> |
return navigableTailMap(fromKey); |
| 1353 |
> |
} |
| 1354 |
> |
|
| 1355 |
> |
private boolean inRange(Object key) { |
| 1356 |
|
return (fromStart || compare(key, fromKey) >= 0) && |
| 1357 |
|
(toEnd || compare(key, toKey) < 0); |
| 1358 |
|
} |
| 1359 |
|
|
| 1360 |
|
// This form allows the high endpoint (as well as all legit keys) |
| 1361 |
< |
private boolean inRange2(K key) { |
| 1361 |
> |
private boolean inRange2(Object key) { |
| 1362 |
|
return (fromStart || compare(key, fromKey) >= 0) && |
| 1363 |
|
(toEnd || compare(key, toKey) <= 0); |
| 1364 |
|
} |
| 1380 |
|
return next != null; |
| 1381 |
|
} |
| 1382 |
|
|
| 1383 |
< |
Entry<K,V> nextEntry() { |
| 1383 |
> |
Entry<K,V> nextEntry() { |
| 1384 |
|
if (next == null) |
| 1385 |
|
throw new NoSuchElementException(); |
| 1386 |
|
if (modCount != expectedModCount) |
| 1407 |
|
EntryIterator(Entry<K,V> first) { |
| 1408 |
|
super(first); |
| 1409 |
|
} |
| 1575 |
– |
|
| 1410 |
|
public Map.Entry<K,V> next() { |
| 1411 |
|
return nextEntry(); |
| 1412 |
|
} |
| 1451 |
|
} |
| 1452 |
|
} |
| 1453 |
|
|
| 1620 |
– |
|
| 1454 |
|
/** |
| 1455 |
|
* Base for Descending Iterators. |
| 1456 |
|
*/ |
| 1511 |
|
|
| 1512 |
|
} |
| 1513 |
|
|
| 1681 |
– |
|
| 1514 |
|
/** |
| 1515 |
|
* Compares two keys using the correct comparison method for this TreeMap. |
| 1516 |
|
*/ |
| 1517 |
< |
private int compare(K k1, K k2) { |
| 1518 |
< |
return (comparator==null ? ((Comparable</*-*/K>)k1).compareTo(k2) |
| 1519 |
< |
: comparator.compare((K)k1, (K)k2)); |
| 1517 |
> |
private int compare(Object k1, Object k2) { |
| 1518 |
> |
return comparator==null ? ((Comparable<? super K>)k1).compareTo((K)k2) |
| 1519 |
> |
: comparator.compare((K)k1, (K)k2); |
| 1520 |
|
} |
| 1521 |
|
|
| 1522 |
|
/** |
| 1523 |
< |
* Test two values for equality. Differs from o1.equals(o2) only in |
| 1523 |
> |
* Test two values for equality. Differs from o1.equals(o2) only in |
| 1524 |
|
* that it copes with <tt>null</tt> o1 properly. |
| 1525 |
|
*/ |
| 1526 |
|
private static boolean valEquals(Object o1, Object o2) { |
| 1556 |
|
/** |
| 1557 |
|
* Returns the key. |
| 1558 |
|
* |
| 1559 |
< |
* @return the key. |
| 1559 |
> |
* @return the key |
| 1560 |
|
*/ |
| 1561 |
|
public K getKey() { |
| 1562 |
|
return key; |
| 1565 |
|
/** |
| 1566 |
|
* Returns the value associated with the key. |
| 1567 |
|
* |
| 1568 |
< |
* @return the value associated with the key. |
| 1568 |
> |
* @return the value associated with the key |
| 1569 |
|
*/ |
| 1570 |
|
public V getValue() { |
| 1571 |
|
return value; |
| 1576 |
|
* value. |
| 1577 |
|
* |
| 1578 |
|
* @return the value associated with the key before this method was |
| 1579 |
< |
* called. |
| 1579 |
> |
* called |
| 1580 |
|
*/ |
| 1581 |
|
public V setValue(V value) { |
| 1582 |
|
V oldValue = this.value; |
| 1947 |
|
} |
| 1948 |
|
|
| 1949 |
|
/** Intended to be called only from TreeSet.addAll **/ |
| 1950 |
< |
void addAllForTreeSet(SortedSet<Map.Entry<K,V>> set, V defaultVal) { |
| 1950 |
> |
void addAllForTreeSet(SortedSet<? extends K> set, V defaultVal) { |
| 1951 |
|
try { |
| 1952 |
|
buildFromSorted(set.size(), set.iterator(), null, defaultVal); |
| 1953 |
|
} catch (java.io.IOException cannotHappen) { |
| 1972 |
|
* to calling this method. |
| 1973 |
|
* |
| 1974 |
|
* @param size the number of keys (or key-value pairs) to be read from |
| 1975 |
< |
* the iterator or stream. |
| 1975 |
> |
* the iterator or stream |
| 1976 |
|
* @param it If non-null, new entries are created from entries |
| 1977 |
|
* or keys read from this iterator. |
| 1978 |
|
* @param str If non-null, new entries are created from keys and |
| 2007 |
|
* @param level the current level of tree. Initial call should be 0. |
| 2008 |
|
* @param lo the first element index of this subtree. Initial should be 0. |
| 2009 |
|
* @param hi the last element index of this subtree. Initial should be |
| 2010 |
< |
* size-1. |
| 2010 |
> |
* size-1. |
| 2011 |
|
* @param redLevel the level at which nodes should be red. |
| 2012 |
|
* Must be equal to computeRedLevel for tree of this size. |
| 2013 |
|
*/ |
| 2091 |
|
level++; |
| 2092 |
|
return level; |
| 2093 |
|
} |
| 2262 |
– |
|
| 2263 |
– |
|
| 2264 |
– |
/** |
| 2265 |
– |
* Entry holding a snapshot of a key-value pair |
| 2266 |
– |
*/ |
| 2267 |
– |
static class SnapshotEntry<K,V> implements Map.Entry<K,V> { |
| 2268 |
– |
final K key; |
| 2269 |
– |
final V value; |
| 2270 |
– |
|
| 2271 |
– |
public SnapshotEntry(Entry<K,V> e) { |
| 2272 |
– |
this.key = e.getKey(); |
| 2273 |
– |
this.value = e.getValue(); |
| 2274 |
– |
} |
| 2275 |
– |
|
| 2276 |
– |
public K getKey() { |
| 2277 |
– |
return key; |
| 2278 |
– |
} |
| 2279 |
– |
|
| 2280 |
– |
public V getValue() { |
| 2281 |
– |
return value; |
| 2282 |
– |
} |
| 2283 |
– |
|
| 2284 |
– |
/** |
| 2285 |
– |
* Always fails, throwing <tt>UnsupportedOperationException</tt>. |
| 2286 |
– |
* @throws UnsupportedOperationException always. |
| 2287 |
– |
*/ |
| 2288 |
– |
public V setValue(V value) { |
| 2289 |
– |
throw new UnsupportedOperationException(); |
| 2290 |
– |
} |
| 2291 |
– |
|
| 2292 |
– |
public boolean equals(Object o) { |
| 2293 |
– |
if (!(o instanceof Map.Entry)) |
| 2294 |
– |
return false; |
| 2295 |
– |
Map.Entry e = (Map.Entry)o; |
| 2296 |
– |
return eq(key, e.getKey()) && eq(value, e.getValue()); |
| 2297 |
– |
} |
| 2298 |
– |
|
| 2299 |
– |
public int hashCode() { |
| 2300 |
– |
return ((key == null) ? 0 : key.hashCode()) ^ |
| 2301 |
– |
((value == null) ? 0 : value.hashCode()); |
| 2302 |
– |
} |
| 2303 |
– |
|
| 2304 |
– |
public String toString() { |
| 2305 |
– |
return key + "=" + value; |
| 2306 |
– |
} |
| 2307 |
– |
|
| 2308 |
– |
private static boolean eq(Object o1, Object o2) { |
| 2309 |
– |
return (o1 == null ? o2 == null : o1.equals(o2)); |
| 2310 |
– |
} |
| 2311 |
– |
} |
| 2312 |
– |
|
| 2094 |
|
} |
