1 |
|
/* |
2 |
|
* %W% %E% |
3 |
|
* |
4 |
< |
* Copyright 2004 Sun Microsystems, Inc. All rights reserved. |
4 |
> |
* Copyright 2005 Sun Microsystems, Inc. All rights reserved. |
5 |
|
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. |
6 |
|
*/ |
7 |
|
|
8 |
< |
package java.util; |
9 |
< |
|
8 |
> |
package java.util; |
9 |
> |
import java.util.*; // for javadoc (till 6280605 is fixed) |
10 |
|
|
11 |
|
/** |
12 |
< |
* Red-Black tree based implementation of the <tt>NavigableMap</tt> interface. |
13 |
< |
* This class guarantees that the map will be in ascending key order, sorted |
14 |
< |
* according to the <i>natural order</i> for the key's class (see |
15 |
< |
* <tt>Comparable</tt>), or by the comparator provided at creation time, |
16 |
< |
* depending on which constructor is used.<p> |
12 |
> |
* A Red-Black tree based {@link NavigableMap} implementation. |
13 |
> |
* The map is sorted according to the {@linkplain Comparable natural |
14 |
> |
* ordering} of its keys, or by a {@link Comparator} provided at map |
15 |
> |
* creation time, depending on which constructor is used. |
16 |
|
* |
17 |
< |
* This implementation provides guaranteed log(n) time cost for the |
17 |
> |
* <p>This implementation provides guaranteed log(n) time cost for the |
18 |
|
* <tt>containsKey</tt>, <tt>get</tt>, <tt>put</tt> and <tt>remove</tt> |
19 |
|
* operations. Algorithms are adaptations of those in Cormen, Leiserson, and |
20 |
< |
* Rivest's <I>Introduction to Algorithms</I>.<p> |
20 |
> |
* Rivest's <I>Introduction to Algorithms</I>. |
21 |
|
* |
22 |
< |
* Note that the ordering maintained by a sorted map (whether or not an |
22 |
> |
* <p>Note that the ordering maintained by a sorted map (whether or not an |
23 |
|
* explicit comparator is provided) must be <i>consistent with equals</i> if |
24 |
|
* this sorted map is to correctly implement the <tt>Map</tt> interface. (See |
25 |
|
* <tt>Comparable</tt> or <tt>Comparator</tt> for a precise definition of |
29 |
|
* method, so two keys that are deemed equal by this method are, from the |
30 |
|
* standpoint of the sorted map, equal. The behavior of a sorted map |
31 |
|
* <i>is</i> well-defined even if its ordering is inconsistent with equals; it |
32 |
< |
* just fails to obey the general contract of the <tt>Map</tt> interface.<p> |
32 |
> |
* just fails to obey the general contract of the <tt>Map</tt> interface. |
33 |
|
* |
34 |
< |
* <b>Note that this implementation is not synchronized.</b> If multiple |
34 |
> |
* <p><b>Note that this implementation is not synchronized.</b> If multiple |
35 |
|
* threads access a map concurrently, and at least one of the threads modifies |
36 |
|
* the map structurally, it <i>must</i> be synchronized externally. (A |
37 |
|
* structural modification is any operation that adds or deletes one or more |
43 |
|
* time, to prevent accidental unsynchronized access to the map: |
44 |
|
* <pre> |
45 |
|
* Map m = Collections.synchronizedMap(new TreeMap(...)); |
46 |
< |
* </pre><p> |
46 |
> |
* </pre> |
47 |
|
* |
48 |
< |
* The iterators returned by all of this class's "collection view methods" are |
48 |
> |
* <p>The iterators returned by the <tt>iterator</tt> method of the collections |
49 |
> |
* returned by all of this class's "collection view methods" are |
50 |
|
* <i>fail-fast</i>: if the map is structurally modified at any time after the |
51 |
|
* iterator is created, in any way except through the iterator's own |
52 |
< |
* <tt>remove</tt> or <tt>add</tt> methods, the iterator throws a |
53 |
< |
* <tt>ConcurrentModificationException</tt>. Thus, in the face of concurrent |
52 |
> |
* <tt>remove</tt> method, the iterator will throw a {@link |
53 |
> |
* ConcurrentModificationException}. Thus, in the face of concurrent |
54 |
|
* modification, the iterator fails quickly and cleanly, rather than risking |
55 |
< |
* arbitrary, non-deterministic behavior at an undetermined time in the |
56 |
< |
* future. |
55 |
> |
* arbitrary, non-deterministic behavior at an undetermined time in the future. |
56 |
|
* |
57 |
|
* <p>Note that the fail-fast behavior of an iterator cannot be guaranteed |
58 |
|
* as it is, generally speaking, impossible to make any hard guarantees in the |
72 |
|
* <a href="{@docRoot}/../guide/collections/index.html"> |
73 |
|
* Java Collections Framework</a>. |
74 |
|
* |
75 |
+ |
* @param <K> the type of keys maintained by this map |
76 |
+ |
* @param <V> the type of mapped values |
77 |
+ |
* |
78 |
|
* @author Josh Bloch and Doug Lea |
79 |
|
* @version %I%, %G% |
80 |
|
* @see Map |
92 |
|
implements NavigableMap<K,V>, Cloneable, java.io.Serializable |
93 |
|
{ |
94 |
|
/** |
95 |
< |
* The Comparator used to maintain order in this TreeMap, or |
96 |
< |
* null if this TreeMap uses its elements natural ordering. |
95 |
> |
* The comparator used to maintain order in this tree map, or |
96 |
> |
* null if it uses the natural ordering of its keys. |
97 |
|
* |
98 |
|
* @serial |
99 |
|
*/ |
115 |
|
private void decrementSize() { modCount++; size--; } |
116 |
|
|
117 |
|
/** |
118 |
< |
* Constructs a new, empty map, sorted according to the keys' natural |
119 |
< |
* order. All keys inserted into the map must implement the |
120 |
< |
* <tt>Comparable</tt> interface. Furthermore, all such keys must be |
121 |
< |
* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw a |
122 |
< |
* ClassCastException for any elements <tt>k1</tt> and <tt>k2</tt> in the |
123 |
< |
* map. If the user attempts to put a key into the map that violates this |
124 |
< |
* constraint (for example, the user attempts to put a string key into a |
125 |
< |
* map whose keys are integers), the <tt>put(Object key, Object |
126 |
< |
* value)</tt> call will throw a <tt>ClassCastException</tt>. |
127 |
< |
* |
126 |
< |
* @see Comparable |
118 |
> |
* Constructs a new, empty tree map, using the natural ordering of its |
119 |
> |
* keys. All keys inserted into the map must implement the {@link |
120 |
> |
* Comparable} interface. Furthermore, all such keys must be |
121 |
> |
* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw |
122 |
> |
* a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
123 |
> |
* <tt>k2</tt> in the map. If the user attempts to put a key into the |
124 |
> |
* map that violates this constraint (for example, the user attempts to |
125 |
> |
* put a string key into a map whose keys are integers), the |
126 |
> |
* <tt>put(Object key, Object value)</tt> call will throw a |
127 |
> |
* <tt>ClassCastException</tt>. |
128 |
|
*/ |
129 |
|
public TreeMap() { |
130 |
|
} |
131 |
|
|
132 |
|
/** |
133 |
< |
* Constructs a new, empty map, sorted according to the given comparator. |
134 |
< |
* All keys inserted into the map must be <i>mutually comparable</i> by |
135 |
< |
* the given comparator: <tt>comparator.compare(k1, k2)</tt> must not |
136 |
< |
* throw a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
137 |
< |
* <tt>k2</tt> in the map. If the user attempts to put a key into the |
138 |
< |
* map that violates this constraint, the <tt>put(Object key, Object |
139 |
< |
* value)</tt> call will throw a <tt>ClassCastException</tt>. |
140 |
< |
* |
141 |
< |
* @param c the comparator that will be used to sort this map. A |
142 |
< |
* <tt>null</tt> value indicates that the keys' <i>natural |
143 |
< |
* ordering</i> should be used. |
144 |
< |
*/ |
145 |
< |
public TreeMap(Comparator<? super K> c) { |
146 |
< |
this.comparator = c; |
133 |
> |
* Constructs a new, empty tree map, ordered according to the given |
134 |
> |
* comparator. All keys inserted into the map must be <i>mutually |
135 |
> |
* comparable</i> by the given comparator: <tt>comparator.compare(k1, |
136 |
> |
* k2)</tt> must not throw a <tt>ClassCastException</tt> for any keys |
137 |
> |
* <tt>k1</tt> and <tt>k2</tt> in the map. If the user attempts to put |
138 |
> |
* a key into the map that violates this constraint, the <tt>put(Object |
139 |
> |
* key, Object value)</tt> call will throw a |
140 |
> |
* <tt>ClassCastException</tt>. |
141 |
> |
* |
142 |
> |
* @param comparator the comparator that will be used to order this map. |
143 |
> |
* If <tt>null</tt>, the {@linkplain Comparable natural |
144 |
> |
* ordering} of the keys will be used. |
145 |
> |
*/ |
146 |
> |
public TreeMap(Comparator<? super K> comparator) { |
147 |
> |
this.comparator = comparator; |
148 |
|
} |
149 |
|
|
150 |
|
/** |
151 |
< |
* Constructs a new map containing the same mappings as the given map, |
152 |
< |
* sorted according to the keys' <i>natural order</i>. All keys inserted |
153 |
< |
* into the new map must implement the <tt>Comparable</tt> interface. |
154 |
< |
* Furthermore, all such keys must be <i>mutually comparable</i>: |
155 |
< |
* <tt>k1.compareTo(k2)</tt> must not throw a <tt>ClassCastException</tt> |
156 |
< |
* for any elements <tt>k1</tt> and <tt>k2</tt> in the map. This method |
157 |
< |
* runs in n*log(n) time. |
158 |
< |
* |
159 |
< |
* @param m the map whose mappings are to be placed in this map. |
160 |
< |
* @throws ClassCastException the keys in t are not Comparable, or |
161 |
< |
* are not mutually comparable. |
162 |
< |
* @throws NullPointerException if the specified map is null. |
151 |
> |
* Constructs a new tree map containing the same mappings as the given |
152 |
> |
* map, ordered according to the <i>natural ordering</i> of its keys. |
153 |
> |
* All keys inserted into the new map must implement the {@link |
154 |
> |
* Comparable} interface. Furthermore, all such keys must be |
155 |
> |
* <i>mutually comparable</i>: <tt>k1.compareTo(k2)</tt> must not throw |
156 |
> |
* a <tt>ClassCastException</tt> for any keys <tt>k1</tt> and |
157 |
> |
* <tt>k2</tt> in the map. This method runs in n*log(n) time. |
158 |
> |
* |
159 |
> |
* @param m the map whose mappings are to be placed in this map |
160 |
> |
* @throws ClassCastException if the keys in m are not {@link Comparable}, |
161 |
> |
* or are not mutually comparable |
162 |
> |
* @throws NullPointerException if the specified map is null |
163 |
|
*/ |
164 |
|
public TreeMap(Map<? extends K, ? extends V> m) { |
165 |
|
putAll(m); |
166 |
|
} |
167 |
|
|
168 |
|
/** |
169 |
< |
* Constructs a new map containing the same mappings as the given |
170 |
< |
* <tt>SortedMap</tt>, sorted according to the same ordering. This method |
171 |
< |
* runs in linear time. |
169 |
> |
* Constructs a new tree map containing the same mappings and |
170 |
> |
* using the same ordering as the specified sorted map. This |
171 |
> |
* method runs in linear time. |
172 |
|
* |
173 |
|
* @param m the sorted map whose mappings are to be placed in this map, |
174 |
< |
* and whose comparator is to be used to sort this map. |
175 |
< |
* @throws NullPointerException if the specified sorted map is null. |
174 |
> |
* and whose comparator is to be used to sort this map |
175 |
> |
* @throws NullPointerException if the specified map is null |
176 |
|
*/ |
177 |
|
public TreeMap(SortedMap<K, ? extends V> m) { |
178 |
|
comparator = m.comparator(); |
189 |
|
/** |
190 |
|
* Returns the number of key-value mappings in this map. |
191 |
|
* |
192 |
< |
* @return the number of key-value mappings in this map. |
192 |
> |
* @return the number of key-value mappings in this map |
193 |
|
*/ |
194 |
|
public int size() { |
195 |
|
return size; |
199 |
|
* Returns <tt>true</tt> if this map contains a mapping for the specified |
200 |
|
* key. |
201 |
|
* |
202 |
< |
* @param key key whose presence in this map is to be tested. |
201 |
< |
* |
202 |
> |
* @param key key whose presence in this map is to be tested |
203 |
|
* @return <tt>true</tt> if this map contains a mapping for the |
204 |
< |
* specified key. |
205 |
< |
* @throws ClassCastException if the key cannot be compared with the keys |
206 |
< |
* currently in the map. |
207 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
208 |
< |
* natural ordering, or its comparator does not tolerate |
209 |
< |
* <tt>null</tt> keys. |
204 |
> |
* specified key |
205 |
> |
* @throws ClassCastException if the specified key cannot be compared |
206 |
> |
* with the keys currently in the map |
207 |
> |
* @throws NullPointerException if the specified key is null |
208 |
> |
* and this map uses natural ordering, or its comparator |
209 |
> |
* does not permit null keys |
210 |
|
*/ |
211 |
|
public boolean containsKey(Object key) { |
212 |
|
return getEntry(key) != null; |
217 |
|
* specified value. More formally, returns <tt>true</tt> if and only if |
218 |
|
* this map contains at least one mapping to a value <tt>v</tt> such |
219 |
|
* that <tt>(value==null ? v==null : value.equals(v))</tt>. This |
220 |
< |
* operation will probably require time linear in the Map size for most |
221 |
< |
* implementations of Map. |
220 |
> |
* operation will probably require time linear in the map size for |
221 |
> |
* most implementations. |
222 |
|
* |
223 |
< |
* @param value value whose presence in this Map is to be tested. |
224 |
< |
* @return <tt>true</tt> if a mapping to <tt>value</tt> exists; |
225 |
< |
* <tt>false</tt> otherwise. |
223 |
> |
* @param value value whose presence in this map is to be tested |
224 |
> |
* @return <tt>true</tt> if a mapping to <tt>value</tt> exists; |
225 |
> |
* <tt>false</tt> otherwise |
226 |
|
* @since 1.2 |
227 |
|
*/ |
228 |
|
public boolean containsValue(Object value) { |
251 |
|
} |
252 |
|
|
253 |
|
/** |
254 |
< |
* Returns the value to which this map maps the specified key. Returns |
255 |
< |
* <tt>null</tt> if the map contains no mapping for this key. A return |
254 |
> |
* Returns the value to which this map maps the specified key, or |
255 |
> |
* <tt>null</tt> if the map contains no mapping for the key. A return |
256 |
|
* value of <tt>null</tt> does not <i>necessarily</i> indicate that the |
257 |
|
* map contains no mapping for the key; it's also possible that the map |
258 |
< |
* explicitly maps the key to <tt>null</tt>. The <tt>containsKey</tt> |
259 |
< |
* operation may be used to distinguish these two cases. |
258 |
> |
* explicitly maps the key to <tt>null</tt>. The {@link #containsKey |
259 |
> |
* containsKey} operation may be used to distinguish these two cases. |
260 |
|
* |
261 |
< |
* @param key key whose associated value is to be returned. |
261 |
> |
* @param key key whose associated value is to be returned |
262 |
|
* @return the value to which this map maps the specified key, or |
263 |
< |
* <tt>null</tt> if the map contains no mapping for the key. |
264 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
265 |
< |
* currently in the map. |
266 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
267 |
< |
* natural ordering, or its comparator does not tolerate |
268 |
< |
* <tt>null</tt> keys. |
268 |
< |
* |
269 |
< |
* @see #containsKey(Object) |
263 |
> |
* <tt>null</tt> if the map contains no mapping for the key |
264 |
> |
* @throws ClassCastException if the specified key cannot be compared |
265 |
> |
* with the keys currently in the map |
266 |
> |
* @throws NullPointerException if the specified key is null |
267 |
> |
* and this map uses natural ordering, or its comparator |
268 |
> |
* does not permit null keys |
269 |
|
*/ |
270 |
|
public V get(Object key) { |
271 |
|
Entry<K,V> p = getEntry(key); |
272 |
|
return (p==null ? null : p.value); |
273 |
|
} |
274 |
|
|
276 |
– |
/** |
277 |
– |
* Returns the comparator used to order this map, or <tt>null</tt> if this |
278 |
– |
* map uses its keys' natural order. |
279 |
– |
* |
280 |
– |
* @return the comparator associated with this sorted map, or |
281 |
– |
* <tt>null</tt> if it uses its keys' natural sort method. |
282 |
– |
*/ |
275 |
|
public Comparator<? super K> comparator() { |
276 |
|
return comparator; |
277 |
|
} |
278 |
|
|
279 |
|
/** |
280 |
< |
* Returns the first (lowest) key currently in this sorted map. |
289 |
< |
* |
290 |
< |
* @return the first (lowest) key currently in this sorted map. |
291 |
< |
* @throws NoSuchElementException Map is empty. |
280 |
> |
* @throws NoSuchElementException {@inheritDoc} |
281 |
|
*/ |
282 |
|
public K firstKey() { |
283 |
|
return key(getFirstEntry()); |
284 |
|
} |
285 |
|
|
286 |
|
/** |
287 |
< |
* Returns the last (highest) key currently in this sorted map. |
299 |
< |
* |
300 |
< |
* @return the last (highest) key currently in this sorted map. |
301 |
< |
* @throws NoSuchElementException Map is empty. |
287 |
> |
* @throws NoSuchElementException {@inheritDoc} |
288 |
|
*/ |
289 |
|
public K lastKey() { |
290 |
|
return key(getLastEntry()); |
291 |
|
} |
292 |
|
|
293 |
|
/** |
294 |
< |
* Copies all of the mappings from the specified map to this map. These |
295 |
< |
* mappings replace any mappings that this map had for any of the keys |
296 |
< |
* currently in the specified map. |
297 |
< |
* |
298 |
< |
* @param map mappings to be stored in this map. |
299 |
< |
* @throws ClassCastException class of a key or value in the specified |
300 |
< |
* map prevents it from being stored in this map. |
301 |
< |
* |
302 |
< |
* @throws NullPointerException if the given map is <tt>null</tt> or |
303 |
< |
* this map does not permit <tt>null</tt> keys and a |
318 |
< |
* key in the specified map is <tt>null</tt>. |
294 |
> |
* Copies all of the mappings from the specified map to this map. |
295 |
> |
* These mappings replace any mappings that this map had for any |
296 |
> |
* of the keys currently in the specified map. |
297 |
> |
* |
298 |
> |
* @param map mappings to be stored in this map |
299 |
> |
* @throws ClassCastException if the class of a key or value in |
300 |
> |
* the specified map prevents it from being stored in this map |
301 |
> |
* @throws NullPointerException if the specified map is null or |
302 |
> |
* the specified map contains a null key and this map does not |
303 |
> |
* permit null keys |
304 |
|
*/ |
305 |
|
public void putAll(Map<? extends K, ? extends V> map) { |
306 |
|
int mapSize = map.size(); |
325 |
|
* does not contain an entry for the key. |
326 |
|
* |
327 |
|
* @return this map's entry for the given key, or <tt>null</tt> if the map |
328 |
< |
* does not contain an entry for the key. |
329 |
< |
* @throws ClassCastException if the key cannot be compared with the keys |
330 |
< |
* currently in the map. |
331 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
332 |
< |
* natural order, or its comparator does not tolerate * |
333 |
< |
* <tt>null</tt> keys. |
328 |
> |
* does not contain an entry for the key |
329 |
> |
* @throws ClassCastException if the specified key cannot be compared |
330 |
> |
* with the keys currently in the map |
331 |
> |
* @throws NullPointerException if the specified key is null |
332 |
> |
* and this map uses natural ordering, or its comparator |
333 |
> |
* does not permit null keys |
334 |
|
*/ |
335 |
|
private Entry<K,V> getEntry(Object key) { |
336 |
|
// Offload comparator-based version for sake of performance |
337 |
|
if (comparator != null) |
338 |
|
return getEntryUsingComparator(key); |
339 |
< |
Comparable<K> k = (Comparable<K>) key; |
339 |
> |
Comparable<? super K> k = (Comparable<? super K>) key; |
340 |
|
Entry<K,V> p = root; |
341 |
|
while (p != null) { |
342 |
|
int cmp = k.compareTo(p.key); |
510 |
|
} |
511 |
|
|
512 |
|
/** |
513 |
< |
* Returns the key corresponding to the specified Entry. Throw |
514 |
< |
* NoSuchElementException if the Entry is <tt>null</tt>. |
513 |
> |
* Returns the key corresponding to the specified Entry. |
514 |
> |
* @throws NoSuchElementException if the Entry is null |
515 |
|
*/ |
516 |
|
private static <K> K key(Entry<K,?> e) { |
517 |
|
if (e==null) |
521 |
|
|
522 |
|
/** |
523 |
|
* Associates the specified value with the specified key in this map. |
524 |
< |
* If the map previously contained a mapping for this key, the old |
524 |
> |
* If the map previously contained a mapping for the key, the old |
525 |
|
* value is replaced. |
526 |
|
* |
527 |
< |
* @param key key with which the specified value is to be associated. |
528 |
< |
* @param value value to be associated with the specified key. |
527 |
> |
* @param key key with which the specified value is to be associated |
528 |
> |
* @param value value to be associated with the specified key |
529 |
|
* |
530 |
< |
* @return previous value associated with specified key, or <tt>null</tt> |
531 |
< |
* if there was no mapping for key. A <tt>null</tt> return can |
532 |
< |
* also indicate that the map previously associated <tt>null</tt> |
533 |
< |
* with the specified key. |
534 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
535 |
< |
* currently in the map. |
536 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
537 |
< |
* natural order, or its comparator does not tolerate |
538 |
< |
* <tt>null</tt> keys. |
530 |
> |
* @return the previous value associated with <tt>key</tt>, or |
531 |
> |
* <tt>null</tt> if there was no mapping for <tt>key</tt>. |
532 |
> |
* (A <tt>null</tt> return can also indicate that the map |
533 |
> |
* previously associated <tt>null</tt> with <tt>key</tt>.) |
534 |
> |
* @throws ClassCastException if the specified key cannot be compared |
535 |
> |
* with the keys currently in the map |
536 |
> |
* @throws NullPointerException if the specified key is null |
537 |
> |
* and this map uses natural ordering, or its comparator |
538 |
> |
* does not permit null keys |
539 |
|
*/ |
540 |
|
public V put(K key, V value) { |
541 |
|
Entry<K,V> t = root; |
542 |
|
|
543 |
|
if (t == null) { |
544 |
+ |
if (key == null) { |
545 |
+ |
if (comparator == null) |
546 |
+ |
throw new NullPointerException(); |
547 |
+ |
comparator.compare(key, key); |
548 |
+ |
} |
549 |
|
incrementSize(); |
550 |
|
root = new Entry<K,V>(key, value, null); |
551 |
|
return null; |
552 |
< |
} |
552 |
> |
} |
553 |
|
|
554 |
|
while (true) { |
555 |
|
int cmp = compare(key, t.key); |
581 |
|
* Removes the mapping for this key from this TreeMap if present. |
582 |
|
* |
583 |
|
* @param key key for which mapping should be removed |
584 |
< |
* @return previous value associated with specified key, or <tt>null</tt> |
585 |
< |
* if there was no mapping for key. A <tt>null</tt> return can |
586 |
< |
* also indicate that the map previously associated |
587 |
< |
* <tt>null</tt> with the specified key. |
588 |
< |
* |
589 |
< |
* @throws ClassCastException if key cannot be compared with the keys |
590 |
< |
* currently in the map. |
591 |
< |
* @throws NullPointerException if key is <tt>null</tt> and this map uses |
592 |
< |
* natural order, or its comparator does not tolerate |
603 |
< |
* <tt>null</tt> keys. |
584 |
> |
* @return the previous value associated with <tt>key</tt>, or |
585 |
> |
* <tt>null</tt> if there was no mapping for <tt>key</tt>. |
586 |
> |
* (A <tt>null</tt> return can also indicate that the map |
587 |
> |
* previously associated <tt>null</tt> with <tt>key</tt>.) |
588 |
> |
* @throws ClassCastException if the specified key cannot be compared |
589 |
> |
* with the keys currently in the map |
590 |
> |
* @throws NullPointerException if the specified key is null |
591 |
> |
* and this map uses natural ordering, or its comparator |
592 |
> |
* does not permit null keys |
593 |
|
*/ |
594 |
|
public V remove(Object key) { |
595 |
|
Entry<K,V> p = getEntry(key); |
602 |
|
} |
603 |
|
|
604 |
|
/** |
605 |
< |
* Removes all mappings from this TreeMap. |
605 |
> |
* Removes all of the mappings from this map. |
606 |
> |
* The map will be empty after this call returns. |
607 |
|
*/ |
608 |
|
public void clear() { |
609 |
|
modCount++; |
615 |
|
* Returns a shallow copy of this <tt>TreeMap</tt> instance. (The keys and |
616 |
|
* values themselves are not cloned.) |
617 |
|
* |
618 |
< |
* @return a shallow copy of this Map. |
618 |
> |
* @return a shallow copy of this map |
619 |
|
*/ |
620 |
|
public Object clone() { |
621 |
|
TreeMap<K,V> clone = null; |
646 |
|
// NavigableMap API methods |
647 |
|
|
648 |
|
/** |
649 |
< |
* 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. |
649 |
> |
* @since 1.6 |
650 |
|
*/ |
651 |
|
public Map.Entry<K,V> firstEntry() { |
652 |
|
Entry<K,V> e = getFirstEntry(); |
653 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
653 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
654 |
|
} |
655 |
|
|
656 |
|
/** |
657 |
< |
* 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. |
657 |
> |
* @since 1.6 |
658 |
|
*/ |
659 |
|
public Map.Entry<K,V> lastEntry() { |
660 |
|
Entry<K,V> e = getLastEntry(); |
661 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
661 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
662 |
|
} |
663 |
|
|
664 |
|
/** |
665 |
< |
* 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. |
665 |
> |
* @since 1.6 |
666 |
|
*/ |
667 |
|
public Map.Entry<K,V> pollFirstEntry() { |
668 |
|
Entry<K,V> p = getFirstEntry(); |
669 |
< |
if (p == null) |
669 |
> |
if (p == null) |
670 |
|
return null; |
671 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(p); |
671 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(p); |
672 |
|
deleteEntry(p); |
673 |
|
return result; |
674 |
|
} |
675 |
|
|
676 |
|
/** |
677 |
< |
* 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. |
677 |
> |
* @since 1.6 |
678 |
|
*/ |
679 |
|
public Map.Entry<K,V> pollLastEntry() { |
680 |
|
Entry<K,V> p = getLastEntry(); |
681 |
< |
if (p == null) |
681 |
> |
if (p == null) |
682 |
|
return null; |
683 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(p); |
683 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(p); |
684 |
|
deleteEntry(p); |
685 |
|
return result; |
686 |
|
} |
687 |
|
|
688 |
|
/** |
689 |
< |
* Returns a key-value mapping associated with the least key |
690 |
< |
* greater than or equal to the given key, or <tt>null</tt> if |
691 |
< |
* there is no such entry. |
692 |
< |
* |
693 |
< |
* @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 if key is <tt>null</tt> and this map uses |
727 |
< |
* natural order, or its comparator does not tolerate |
728 |
< |
* <tt>null</tt> keys. |
689 |
> |
* @throws ClassCastException {@inheritDoc} |
690 |
> |
* @throws NullPointerException if the specified key is null |
691 |
> |
* and this map uses natural ordering, or its comparator |
692 |
> |
* does not permit null keys |
693 |
> |
* @since 1.6 |
694 |
|
*/ |
695 |
< |
public Map.Entry<K,V> ceilingEntry(K key) { |
696 |
< |
Entry<K,V> e = getCeilingEntry(key); |
697 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
695 |
> |
public Map.Entry<K,V> lowerEntry(K key) { |
696 |
> |
Entry<K,V> e = getLowerEntry(key); |
697 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
698 |
|
} |
699 |
|
|
735 |
– |
|
700 |
|
/** |
701 |
< |
* Returns least key greater than or equal to the given key, or |
702 |
< |
* <tt>null</tt> if there is no such key. |
703 |
< |
* |
704 |
< |
* @param key the key. |
705 |
< |
* @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 if key is <tt>null</tt> and this map uses |
746 |
< |
* natural order, or its comparator does not tolerate |
747 |
< |
* <tt>null</tt> keys. |
701 |
> |
* @throws ClassCastException {@inheritDoc} |
702 |
> |
* @throws NullPointerException if the specified key is null |
703 |
> |
* and this map uses natural ordering, or its comparator |
704 |
> |
* does not permit null keys |
705 |
> |
* @since 1.6 |
706 |
|
*/ |
707 |
< |
public K ceilingKey(K key) { |
708 |
< |
Entry<K,V> e = getCeilingEntry(key); |
707 |
> |
public K lowerKey(K key) { |
708 |
> |
Entry<K,V> e = getLowerEntry(key); |
709 |
|
return (e == null)? null : e.key; |
710 |
|
} |
711 |
|
|
754 |
– |
|
755 |
– |
|
712 |
|
/** |
713 |
< |
* Returns a key-value mapping associated with the greatest key |
714 |
< |
* less than or equal to the given key, or <tt>null</tt> if there |
715 |
< |
* is no such entry. |
716 |
< |
* |
717 |
< |
* @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 if key is <tt>null</tt> and this map uses |
767 |
< |
* natural order, or its comparator does not tolerate |
768 |
< |
* <tt>null</tt> keys. |
713 |
> |
* @throws ClassCastException {@inheritDoc} |
714 |
> |
* @throws NullPointerException if the specified key is null |
715 |
> |
* and this map uses natural ordering, or its comparator |
716 |
> |
* does not permit null keys |
717 |
> |
* @since 1.6 |
718 |
|
*/ |
719 |
|
public Map.Entry<K,V> floorEntry(K key) { |
720 |
|
Entry<K,V> e = getFloorEntry(key); |
721 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
721 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
722 |
|
} |
723 |
|
|
724 |
|
/** |
725 |
< |
* Returns the greatest key |
726 |
< |
* less than or equal to the given key, or <tt>null</tt> if there |
727 |
< |
* is no such key. |
728 |
< |
* |
729 |
< |
* @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 if key is <tt>null</tt> and this map uses |
786 |
< |
* natural order, or its comparator does not tolerate |
787 |
< |
* <tt>null</tt> keys. |
725 |
> |
* @throws ClassCastException {@inheritDoc} |
726 |
> |
* @throws NullPointerException if the specified key is null |
727 |
> |
* and this map uses natural ordering, or its comparator |
728 |
> |
* does not permit null keys |
729 |
> |
* @since 1.6 |
730 |
|
*/ |
731 |
|
public K floorKey(K key) { |
732 |
|
Entry<K,V> e = getFloorEntry(key); |
734 |
|
} |
735 |
|
|
736 |
|
/** |
737 |
< |
* Returns a key-value mapping associated with the least key |
738 |
< |
* strictly greater than the given key, or <tt>null</tt> if there |
739 |
< |
* is no such entry. |
740 |
< |
* |
741 |
< |
* @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 if key is <tt>null</tt> and this map uses |
805 |
< |
* natural order, or its comparator does not tolerate |
806 |
< |
* <tt>null</tt> keys. |
737 |
> |
* @throws ClassCastException {@inheritDoc} |
738 |
> |
* @throws NullPointerException if the specified key is null |
739 |
> |
* and this map uses natural ordering, or its comparator |
740 |
> |
* does not permit null keys |
741 |
> |
* @since 1.6 |
742 |
|
*/ |
743 |
< |
public Map.Entry<K,V> higherEntry(K key) { |
744 |
< |
Entry<K,V> e = getHigherEntry(key); |
745 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
743 |
> |
public Map.Entry<K,V> ceilingEntry(K key) { |
744 |
> |
Entry<K,V> e = getCeilingEntry(key); |
745 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
746 |
|
} |
747 |
|
|
748 |
|
/** |
749 |
< |
* Returns the least key strictly greater than the given key, or |
750 |
< |
* <tt>null</tt> if there is no such key. |
751 |
< |
* |
752 |
< |
* @param key the key. |
753 |
< |
* @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 if key is <tt>null</tt> and this map uses |
823 |
< |
* natural order, or its comparator does not tolerate |
824 |
< |
* <tt>null</tt> keys. |
749 |
> |
* @throws ClassCastException {@inheritDoc} |
750 |
> |
* @throws NullPointerException if the specified key is null |
751 |
> |
* and this map uses natural ordering, or its comparator |
752 |
> |
* does not permit null keys |
753 |
> |
* @since 1.6 |
754 |
|
*/ |
755 |
< |
public K higherKey(K key) { |
756 |
< |
Entry<K,V> e = getHigherEntry(key); |
755 |
> |
public K ceilingKey(K key) { |
756 |
> |
Entry<K,V> e = getCeilingEntry(key); |
757 |
|
return (e == null)? null : e.key; |
758 |
|
} |
759 |
|
|
760 |
|
/** |
761 |
< |
* Returns a key-value mapping associated with the greatest |
762 |
< |
* key strictly less than the given key, or <tt>null</tt> if there is no |
763 |
< |
* such entry. |
764 |
< |
* |
765 |
< |
* @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 if key is <tt>null</tt> and this map uses |
842 |
< |
* natural order, or its comparator does not tolerate |
843 |
< |
* <tt>null</tt> keys. |
761 |
> |
* @throws ClassCastException {@inheritDoc} |
762 |
> |
* @throws NullPointerException if the specified key is null |
763 |
> |
* and this map uses natural ordering, or its comparator |
764 |
> |
* does not permit null keys |
765 |
> |
* @since 1.6 |
766 |
|
*/ |
767 |
< |
public Map.Entry<K,V> lowerEntry(K key) { |
768 |
< |
Entry<K,V> e = getLowerEntry(key); |
769 |
< |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry(e); |
767 |
> |
public Map.Entry<K,V> higherEntry(K key) { |
768 |
> |
Entry<K,V> e = getHigherEntry(key); |
769 |
> |
return (e == null)? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
770 |
|
} |
771 |
|
|
772 |
|
/** |
773 |
< |
* Returns the greatest key strictly less than the given key, or |
774 |
< |
* <tt>null</tt> if there is no such key. |
775 |
< |
* |
776 |
< |
* @param key the key. |
777 |
< |
* @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 if key is <tt>null</tt> and this map uses |
860 |
< |
* natural order, or its comparator does not tolerate |
861 |
< |
* <tt>null</tt> keys. |
773 |
> |
* @throws ClassCastException {@inheritDoc} |
774 |
> |
* @throws NullPointerException if the specified key is null |
775 |
> |
* and this map uses natural ordering, or its comparator |
776 |
> |
* does not permit null keys |
777 |
> |
* @since 1.6 |
778 |
|
*/ |
779 |
< |
public K lowerKey(K key) { |
780 |
< |
Entry<K,V> e = getLowerEntry(key); |
779 |
> |
public K higherKey(K key) { |
780 |
> |
Entry<K,V> e = getHigherEntry(key); |
781 |
|
return (e == null)? null : e.key; |
782 |
|
} |
783 |
|
|
790 |
|
*/ |
791 |
|
private transient Set<Map.Entry<K,V>> entrySet = null; |
792 |
|
private transient Set<Map.Entry<K,V>> descendingEntrySet = null; |
793 |
< |
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 |
793 |
> |
private transient Set<K> descendingKeySet = null; |
794 |
|
|
795 |
|
/** |
796 |
< |
* Returns a Set view of the keys contained in this map. The set's |
797 |
< |
* iterator will return the keys in ascending order. The set is backed by |
798 |
< |
* this <tt>TreeMap</tt> instance, so changes to this map are reflected in |
799 |
< |
* the Set, and vice-versa. The Set supports element removal, which |
800 |
< |
* removes the corresponding mapping from the map, via the |
801 |
< |
* <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, <tt>removeAll</tt>, |
802 |
< |
* <tt>retainAll</tt>, and <tt>clear</tt> operations. It does not support |
803 |
< |
* the <tt>add</tt> or <tt>addAll</tt> operations. |
804 |
< |
* |
805 |
< |
* @return a set view of the keys contained in this TreeMap. |
796 |
> |
* Returns a {@link Set} view of the keys contained in this map. |
797 |
> |
* The set's iterator returns the keys in ascending order. |
798 |
> |
* The set is backed by the map, so changes to the map are |
799 |
> |
* reflected in the set, and vice-versa. If the map is modified |
800 |
> |
* while an iteration over the set is in progress (except through |
801 |
> |
* the iterator's own <tt>remove</tt> operation), the results of |
802 |
> |
* the iteration are undefined. The set supports element removal, |
803 |
> |
* which removes the corresponding mapping from the map, via the |
804 |
> |
* <tt>Iterator.remove</tt>, <tt>Set.remove</tt>, |
805 |
> |
* <tt>removeAll</tt>, <tt>retainAll</tt>, and <tt>clear</tt> |
806 |
> |
* operations. It does not support the <tt>add</tt> or <tt>addAll</tt> |
807 |
> |
* operations. |
808 |
|
*/ |
809 |
|
public Set<K> keySet() { |
810 |
|
Set<K> ks = keySet; |
815 |
|
public Iterator<K> iterator() { |
816 |
|
return new KeyIterator(getFirstEntry()); |
817 |
|
} |
818 |
< |
|
818 |
> |
|
819 |
|
public int size() { |
820 |
|
return TreeMap.this.size(); |
821 |
|
} |
822 |
< |
|
822 |
> |
|
823 |
|
public boolean contains(Object o) { |
824 |
|
return containsKey(o); |
825 |
|
} |
826 |
< |
|
826 |
> |
|
827 |
|
public boolean remove(Object o) { |
828 |
|
int oldSize = size; |
829 |
|
TreeMap.this.remove(o); |
830 |
|
return size != oldSize; |
831 |
|
} |
832 |
< |
|
832 |
> |
|
833 |
|
public void clear() { |
834 |
|
TreeMap.this.clear(); |
835 |
|
} |
836 |
|
} |
837 |
|
|
838 |
|
/** |
839 |
< |
* Returns a collection view of the values contained in this map. The |
840 |
< |
* collection's iterator will return the values in the order that their |
841 |
< |
* corresponding keys appear in the tree. The collection is backed by |
842 |
< |
* this <tt>TreeMap</tt> instance, so changes to this map are reflected in |
843 |
< |
* the collection, and vice-versa. The collection supports element |
844 |
< |
* removal, which removes the corresponding mapping from the map through |
845 |
< |
* the <tt>Iterator.remove</tt>, <tt>Collection.remove</tt>, |
846 |
< |
* <tt>removeAll</tt>, <tt>retainAll</tt>, and <tt>clear</tt> operations. |
847 |
< |
* It does not support the <tt>add</tt> or <tt>addAll</tt> operations. |
848 |
< |
* |
849 |
< |
* @return a collection view of the values contained in this map. |
839 |
> |
* Returns a {@link Collection} view of the values contained in this map. |
840 |
> |
* The collection's iterator returns the values in ascending order |
841 |
> |
* of the corresponding keys. |
842 |
> |
* The collection is backed by the map, so changes to the map are |
843 |
> |
* reflected in the collection, and vice-versa. If the map is |
844 |
> |
* modified while an iteration over the collection is in progress |
845 |
> |
* (except through the iterator's own <tt>remove</tt> operation), |
846 |
> |
* the results of the iteration are undefined. The collection |
847 |
> |
* supports element removal, which removes the corresponding |
848 |
> |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
849 |
> |
* <tt>Collection.remove</tt>, <tt>removeAll</tt>, |
850 |
> |
* <tt>retainAll</tt> and <tt>clear</tt> operations. It does not |
851 |
> |
* support the <tt>add</tt> or <tt>addAll</tt> operations. |
852 |
|
*/ |
853 |
|
public Collection<V> values() { |
854 |
|
Collection<V> vs = values; |
859 |
|
public Iterator<V> iterator() { |
860 |
|
return new ValueIterator(getFirstEntry()); |
861 |
|
} |
862 |
< |
|
862 |
> |
|
863 |
|
public int size() { |
864 |
|
return TreeMap.this.size(); |
865 |
|
} |
866 |
< |
|
866 |
> |
|
867 |
|
public boolean contains(Object o) { |
868 |
|
for (Entry<K,V> e = getFirstEntry(); e != null; e = successor(e)) |
869 |
|
if (valEquals(e.getValue(), o)) |
870 |
|
return true; |
871 |
|
return false; |
872 |
|
} |
873 |
< |
|
873 |
> |
|
874 |
|
public boolean remove(Object o) { |
875 |
|
for (Entry<K,V> e = getFirstEntry(); e != null; e = successor(e)) { |
876 |
|
if (valEquals(e.getValue(), o)) { |
880 |
|
} |
881 |
|
return false; |
882 |
|
} |
883 |
< |
|
883 |
> |
|
884 |
|
public void clear() { |
885 |
|
TreeMap.this.clear(); |
886 |
|
} |
887 |
|
} |
888 |
|
|
889 |
|
/** |
890 |
< |
* Returns a set view of the mappings contained in this map. The set's |
891 |
< |
* iterator returns the mappings in ascending key order. Each element in |
892 |
< |
* the returned set is a <tt>Map.Entry</tt>. The set is backed by this |
893 |
< |
* map, so changes to this map are reflected in the set, and vice-versa. |
894 |
< |
* The set supports element removal, which removes the corresponding |
895 |
< |
* mapping from the TreeMap, through the <tt>Iterator.remove</tt>, |
890 |
> |
* Returns a {@link Set} view of the mappings contained in this map. |
891 |
> |
* The set's iterator returns the entries in ascending key order. |
892 |
> |
* The set is backed by the map, so changes to the map are |
893 |
> |
* reflected in the set, and vice-versa. If the map is modified |
894 |
> |
* while an iteration over the set is in progress (except through |
895 |
> |
* the iterator's own <tt>remove</tt> operation, or through the |
896 |
> |
* <tt>setValue</tt> operation on a map entry returned by the |
897 |
> |
* iterator) the results of the iteration are undefined. The set |
898 |
> |
* supports element removal, which removes the corresponding |
899 |
> |
* mapping from the map, via the <tt>Iterator.remove</tt>, |
900 |
|
* <tt>Set.remove</tt>, <tt>removeAll</tt>, <tt>retainAll</tt> and |
901 |
< |
* <tt>clear</tt> operations. It does not support the <tt>add</tt> or |
902 |
< |
* <tt>addAll</tt> operations. |
982 |
< |
* |
983 |
< |
* @return a set view of the mappings contained in this map. |
984 |
< |
* @see Map.Entry |
901 |
> |
* <tt>clear</tt> operations. It does not support the |
902 |
> |
* <tt>add</tt> or <tt>addAll</tt> operations. |
903 |
|
*/ |
904 |
|
public Set<Map.Entry<K,V>> entrySet() { |
905 |
|
Set<Map.Entry<K,V>> es = entrySet; |
910 |
|
public Iterator<Map.Entry<K,V>> iterator() { |
911 |
|
return new EntryIterator(getFirstEntry()); |
912 |
|
} |
913 |
< |
|
913 |
> |
|
914 |
|
public boolean contains(Object o) { |
915 |
|
if (!(o instanceof Map.Entry)) |
916 |
|
return false; |
919 |
|
Entry<K,V> p = getEntry(entry.getKey()); |
920 |
|
return p != null && valEquals(p.getValue(), value); |
921 |
|
} |
922 |
< |
|
922 |
> |
|
923 |
|
public boolean remove(Object o) { |
924 |
|
if (!(o instanceof Map.Entry)) |
925 |
|
return false; |
932 |
|
} |
933 |
|
return false; |
934 |
|
} |
935 |
< |
|
935 |
> |
|
936 |
|
public int size() { |
937 |
|
return TreeMap.this.size(); |
938 |
|
} |
939 |
< |
|
939 |
> |
|
940 |
|
public void clear() { |
941 |
|
TreeMap.this.clear(); |
942 |
|
} |
943 |
|
} |
944 |
|
|
945 |
|
/** |
946 |
< |
* Returns a set view of the mappings contained in this map. The |
1029 |
< |
* set's iterator returns the mappings in descending 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 |
946 |
> |
* @since 1.6 |
947 |
|
*/ |
948 |
|
public Set<Map.Entry<K,V>> descendingEntrySet() { |
949 |
|
Set<Map.Entry<K,V>> es = descendingEntrySet; |
957 |
|
} |
958 |
|
|
959 |
|
/** |
960 |
< |
* 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. |
960 |
> |
* @since 1.6 |
961 |
|
*/ |
962 |
|
public Set<K> descendingKeySet() { |
963 |
|
Set<K> ks = descendingKeySet; |
971 |
|
} |
972 |
|
|
973 |
|
/** |
974 |
< |
* 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 |
1082 |
< |
* navigable map is empty.) The returned navigable map is backed |
1083 |
< |
* by this map, so changes in the returned navigable map are |
1084 |
< |
* reflected in this map, and vice-versa. The returned navigable |
1085 |
< |
* map supports all optional map operations.<p> |
1086 |
< |
* |
1087 |
< |
* The navigable map returned by this method will throw an |
1088 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
1089 |
< |
* less than <tt>fromKey</tt> or greater than or equal to |
1090 |
< |
* <tt>toKey</tt>.<p> |
1091 |
< |
* |
1092 |
< |
* Note: this method always returns a <i>half-open range</i> (which |
1093 |
< |
* includes its low endpoint but not its high endpoint). If you need a |
1094 |
< |
* <i>closed range</i> (which includes both endpoints), and the key type |
1095 |
< |
* allows for calculation of the successor of a given key, merely request the |
1096 |
< |
* subrange from <tt>lowEndpoint</tt> to <tt>successor(highEndpoint)</tt>. |
1097 |
< |
* For example, suppose that <tt>m</tt> is a navigable map whose keys are |
1098 |
< |
* strings. The following idiom obtains a view containing all of the |
1099 |
< |
* key-value mappings in <tt>m</tt> whose keys are between <tt>low</tt> |
1100 |
< |
* and <tt>high</tt>, inclusive: |
1101 |
< |
* <pre> NavigableMap sub = m.navigableSubMap(low, high+"\0");</pre> |
1102 |
< |
* A similar technique can be used to generate an <i>open range</i> (which |
1103 |
< |
* contains neither endpoint). The following idiom obtains a view |
1104 |
< |
* containing all of the key-value mappings in <tt>m</tt> whose keys are |
1105 |
< |
* between <tt>low</tt> and <tt>high</tt>, exclusive: |
1106 |
< |
* <pre> NavigableMap sub = m.navigableSubMap(low+"\0", high);</pre> |
1107 |
< |
* |
1108 |
< |
* @param fromKey low endpoint (inclusive) of the subMap. |
1109 |
< |
* @param toKey high endpoint (exclusive) of the subMap. |
1110 |
< |
* |
1111 |
< |
* @return a view of the portion of this map whose keys range from |
1112 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. |
1113 |
< |
* |
1114 |
< |
* @throws ClassCastException if <tt>fromKey</tt> and <tt>toKey</tt> |
1115 |
< |
* cannot be compared to one another using this map's comparator |
1116 |
< |
* (or, if the map has no comparator, using natural ordering). |
1117 |
< |
* @throws IllegalArgumentException if <tt>fromKey</tt> is greater than |
1118 |
< |
* <tt>toKey</tt>. |
974 |
> |
* @throws ClassCastException {@inheritDoc} |
975 |
|
* @throws NullPointerException if <tt>fromKey</tt> or <tt>toKey</tt> is |
976 |
< |
* <tt>null</tt> and this map uses natural order, or its |
977 |
< |
* comparator does not tolerate <tt>null</tt> keys. |
976 |
> |
* null and this map uses natural ordering, or its comparator |
977 |
> |
* does not permit null keys |
978 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
979 |
> |
* @since 1.6 |
980 |
|
*/ |
981 |
|
public NavigableMap<K,V> navigableSubMap(K fromKey, K toKey) { |
982 |
|
return new SubMap(fromKey, toKey); |
983 |
|
} |
984 |
|
|
1127 |
– |
|
985 |
|
/** |
986 |
< |
* Returns a view of the portion of this map whose keys are strictly less |
987 |
< |
* than <tt>toKey</tt>. The returned navigable map is backed by this map, so |
988 |
< |
* changes in the returned navigable map are reflected in this map, and |
989 |
< |
* vice-versa. The returned navigable map supports all optional map |
990 |
< |
* operations.<p> |
991 |
< |
* |
1135 |
< |
* The navigable map returned by this method will throw an |
1136 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
1137 |
< |
* greater than or equal to <tt>toKey</tt>.<p> |
1138 |
< |
* |
1139 |
< |
* Note: this method always returns a view that does not contain its |
1140 |
< |
* (high) endpoint. If you need a view that does contain this endpoint, |
1141 |
< |
* and the key type allows for calculation of the successor of a given key, |
1142 |
< |
* merely request a headMap bounded by <tt>successor(highEndpoint)</tt>. |
1143 |
< |
* For example, suppose that suppose that <tt>m</tt> is a navigable map whose |
1144 |
< |
* keys are strings. The following idiom obtains a view containing all of |
1145 |
< |
* the key-value mappings in <tt>m</tt> whose keys are less than or equal |
1146 |
< |
* to <tt>high</tt>: |
1147 |
< |
* <pre> |
1148 |
< |
* NavigableMap head = m.headMap(high+"\0"); |
1149 |
< |
* </pre> |
1150 |
< |
* |
1151 |
< |
* @param toKey high endpoint (exclusive) of the headMap. |
1152 |
< |
* @return a view of the portion of this map whose keys are strictly |
1153 |
< |
* less than <tt>toKey</tt>. |
1154 |
< |
* |
1155 |
< |
* @throws ClassCastException if <tt>toKey</tt> is not compatible |
1156 |
< |
* with this map's comparator (or, if the map has no comparator, |
1157 |
< |
* if <tt>toKey</tt> does not implement <tt>Comparable</tt>). |
1158 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1159 |
< |
* headMap, or tailMap, and <tt>toKey</tt> is not within the |
1160 |
< |
* specified range of the subMap, headMap, or tailMap. |
1161 |
< |
* @throws NullPointerException if <tt>toKey</tt> is <tt>null</tt> and |
1162 |
< |
* this map uses natural order, or its comparator does not |
1163 |
< |
* tolerate <tt>null</tt> keys. |
986 |
> |
* @throws ClassCastException {@inheritDoc} |
987 |
> |
* @throws NullPointerException if <tt>toKey</tt> is null |
988 |
> |
* and this map uses natural ordering, or its comparator |
989 |
> |
* does not permit null keys |
990 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
991 |
> |
* @since 1.6 |
992 |
|
*/ |
993 |
|
public NavigableMap<K,V> navigableHeadMap(K toKey) { |
994 |
|
return new SubMap(toKey, true); |
995 |
|
} |
996 |
|
|
997 |
|
/** |
998 |
< |
* Returns a view of the portion of this map whose keys are greater than |
999 |
< |
* or equal to <tt>fromKey</tt>. The returned navigable map is backed by |
1000 |
< |
* this map, so changes in the returned navigable map are reflected in this |
1001 |
< |
* map, and vice-versa. The returned navigable map supports all optional map |
1002 |
< |
* operations.<p> |
1003 |
< |
* |
1176 |
< |
* The navigable map returned by this method will throw an |
1177 |
< |
* <tt>IllegalArgumentException</tt> if the user attempts to insert a key |
1178 |
< |
* less than <tt>fromKey</tt>.<p> |
1179 |
< |
* |
1180 |
< |
* Note: this method always returns a view that contains its (low) |
1181 |
< |
* endpoint. If you need a view that does not contain this endpoint, and |
1182 |
< |
* the element type allows for calculation of the successor of a given value, |
1183 |
< |
* merely request a tailMap bounded by <tt>successor(lowEndpoint)</tt>. |
1184 |
< |
* For example, suppose that <tt>m</tt> is a navigable map whose keys |
1185 |
< |
* are strings. The following idiom obtains a view containing |
1186 |
< |
* all of the key-value mappings in <tt>m</tt> whose keys are strictly |
1187 |
< |
* greater than <tt>low</tt>: <pre> |
1188 |
< |
* NavigableMap tail = m.tailMap(low+"\0"); |
1189 |
< |
* </pre> |
1190 |
< |
* |
1191 |
< |
* @param fromKey low endpoint (inclusive) of the tailMap. |
1192 |
< |
* @return a view of the portion of this map whose keys are greater |
1193 |
< |
* than or equal to <tt>fromKey</tt>. |
1194 |
< |
* @throws ClassCastException if <tt>fromKey</tt> is not compatible |
1195 |
< |
* with this map's comparator (or, if the map has no comparator, |
1196 |
< |
* if <tt>fromKey</tt> does not implement <tt>Comparable</tt>). |
1197 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1198 |
< |
* headMap, or tailMap, and <tt>fromKey</tt> is not within the |
1199 |
< |
* specified range of the subMap, headMap, or tailMap. |
1200 |
< |
* @throws NullPointerException if <tt>fromKey</tt> is <tt>null</tt> and |
1201 |
< |
* this map uses natural order, or its comparator does not |
1202 |
< |
* tolerate <tt>null</tt> keys. |
998 |
> |
* @throws ClassCastException {@inheritDoc} |
999 |
> |
* @throws NullPointerException if <tt>fromKey</tt> is null |
1000 |
> |
* and this map uses natural ordering, or its comparator |
1001 |
> |
* does not permit null keys |
1002 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
1003 |
> |
* @since 1.6 |
1004 |
|
*/ |
1005 |
|
public NavigableMap<K,V> navigableTailMap(K fromKey) { |
1006 |
|
return new SubMap(fromKey, false); |
1007 |
|
} |
1008 |
|
|
1009 |
|
/** |
1010 |
< |
* Equivalent to <tt>navigableSubMap</tt> but with a return |
1011 |
< |
* type conforming to the <tt>SortedMap</tt> interface. |
1012 |
< |
* @param fromKey low endpoint (inclusive) of the subMap. |
1013 |
< |
* @param toKey high endpoint (exclusive) of the subMap. |
1014 |
< |
* |
1015 |
< |
* @return a view of the portion of this map whose keys range from |
1215 |
< |
* <tt>fromKey</tt>, inclusive, to <tt>toKey</tt>, exclusive. |
1216 |
< |
* |
1217 |
< |
* @throws ClassCastException if <tt>fromKey</tt> and <tt>toKey</tt> |
1218 |
< |
* cannot be compared to one another using this map's comparator |
1219 |
< |
* (or, if the map has no comparator, using natural ordering). |
1220 |
< |
* @throws IllegalArgumentException if <tt>fromKey</tt> is greater than |
1221 |
< |
* <tt>toKey</tt>. |
1010 |
> |
* Equivalent to {@link #navigableSubMap} but with a return type |
1011 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
1012 |
> |
* |
1013 |
> |
* <p>{@inheritDoc} |
1014 |
> |
* |
1015 |
> |
* @throws ClassCastException {@inheritDoc} |
1016 |
|
* @throws NullPointerException if <tt>fromKey</tt> or <tt>toKey</tt> is |
1017 |
< |
* <tt>null</tt> and this map uses natural order, or its |
1018 |
< |
* comparator does not tolerate <tt>null</tt> keys. |
1017 |
> |
* null and this map uses natural ordering, or its comparator |
1018 |
> |
* does not permit null keys |
1019 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
1020 |
|
*/ |
1021 |
|
public SortedMap<K,V> subMap(K fromKey, K toKey) { |
1022 |
|
return new SubMap(fromKey, toKey); |
1023 |
|
} |
1024 |
|
|
1230 |
– |
|
1025 |
|
/** |
1026 |
< |
* Equivalent to <tt>navigableHeadMap</tt> but with a return |
1027 |
< |
* type conforming to the <tt>SortedMap</tt> interface. |
1026 |
> |
* Equivalent to {@link #navigableHeadMap} but with a return type |
1027 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
1028 |
|
* |
1029 |
< |
* @param toKey high endpoint (exclusive) of the headMap. |
1030 |
< |
* @return a view of the portion of this map whose keys are strictly |
1031 |
< |
* less than <tt>toKey</tt>. |
1032 |
< |
* |
1033 |
< |
* @throws ClassCastException if <tt>toKey</tt> is not compatible |
1034 |
< |
* with this map's comparator (or, if the map has no comparator, |
1035 |
< |
* if <tt>toKey</tt> does not implement <tt>Comparable</tt>). |
1242 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1243 |
< |
* headMap, or tailMap, and <tt>toKey</tt> is not within the |
1244 |
< |
* specified range of the subMap, headMap, or tailMap. |
1245 |
< |
* @throws NullPointerException if <tt>toKey</tt> is <tt>null</tt> and |
1246 |
< |
* this map uses natural order, or its comparator does not |
1247 |
< |
* tolerate <tt>null</tt> keys. |
1029 |
> |
* <p>{@inheritDoc} |
1030 |
> |
* |
1031 |
> |
* @throws ClassCastException {@inheritDoc} |
1032 |
> |
* @throws NullPointerException if <tt>toKey</tt> is null |
1033 |
> |
* and this map uses natural ordering, or its comparator |
1034 |
> |
* does not permit null keys |
1035 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
1036 |
|
*/ |
1037 |
|
public SortedMap<K,V> headMap(K toKey) { |
1038 |
|
return new SubMap(toKey, true); |
1039 |
|
} |
1040 |
|
|
1041 |
|
/** |
1042 |
< |
* Equivalent to <tt>navigableTailMap</tt> but with a return |
1043 |
< |
* type conforming to the <tt>SortedMap</tt> interface. |
1042 |
> |
* Equivalent to {@link #navigableTailMap} but with a return type |
1043 |
> |
* conforming to the <tt>SortedMap</tt> interface. |
1044 |
> |
* |
1045 |
> |
* <p>{@inheritDoc} |
1046 |
|
* |
1047 |
< |
* @param fromKey low endpoint (inclusive) of the tailMap. |
1048 |
< |
* @return a view of the portion of this map whose keys are greater |
1049 |
< |
* than or equal to <tt>fromKey</tt>. |
1050 |
< |
* @throws ClassCastException if <tt>fromKey</tt> is not compatible |
1051 |
< |
* with this map's comparator (or, if the map has no comparator, |
1262 |
< |
* if <tt>fromKey</tt> does not implement <tt>Comparable</tt>). |
1263 |
< |
* @throws IllegalArgumentException if this map is itself a subMap, |
1264 |
< |
* headMap, or tailMap, and <tt>fromKey</tt> is not within the |
1265 |
< |
* specified range of the subMap, headMap, or tailMap. |
1266 |
< |
* @throws NullPointerException if <tt>fromKey</tt> is <tt>null</tt> and |
1267 |
< |
* this map uses natural order, or its comparator does not |
1268 |
< |
* tolerate <tt>null</tt> keys. |
1047 |
> |
* @throws ClassCastException {@inheritDoc} |
1048 |
> |
* @throws NullPointerException if <tt>fromKey</tt> is null |
1049 |
> |
* and this map uses natural ordering, or its comparator |
1050 |
> |
* does not permit null keys |
1051 |
> |
* @throws IllegalArgumentException {@inheritDoc} |
1052 |
|
*/ |
1053 |
|
public SortedMap<K,V> tailMap(K fromKey) { |
1054 |
|
return new SubMap(fromKey, false); |
1093 |
|
} |
1094 |
|
|
1095 |
|
public boolean isEmpty() { |
1096 |
< |
return entrySet.isEmpty(); |
1096 |
> |
return entrySet().isEmpty(); |
1097 |
|
} |
1098 |
|
|
1099 |
|
public boolean containsKey(Object key) { |
1100 |
< |
return inRange((K) key) && TreeMap.this.containsKey(key); |
1100 |
> |
return inRange(key) && TreeMap.this.containsKey(key); |
1101 |
|
} |
1102 |
|
|
1103 |
|
public V get(Object key) { |
1104 |
< |
if (!inRange((K) key)) |
1104 |
> |
if (!inRange(key)) |
1105 |
|
return null; |
1106 |
|
return TreeMap.this.get(key); |
1107 |
|
} |
1113 |
|
} |
1114 |
|
|
1115 |
|
public V remove(Object key) { |
1116 |
< |
if (!inRange((K) key)) |
1116 |
> |
if (!inRange(key)) |
1117 |
|
return null; |
1118 |
|
return TreeMap.this.remove(key); |
1119 |
|
} |
1126 |
|
TreeMap.Entry<K,V> e = fromStart ? getFirstEntry() : getCeilingEntry(fromKey); |
1127 |
|
K first = key(e); |
1128 |
|
if (!toEnd && compare(first, toKey) >= 0) |
1129 |
< |
throw(new NoSuchElementException()); |
1129 |
> |
throw new NoSuchElementException(); |
1130 |
|
return first; |
1131 |
|
} |
1132 |
|
|
1134 |
|
TreeMap.Entry<K,V> e = toEnd ? getLastEntry() : getLowerEntry(toKey); |
1135 |
|
K last = key(e); |
1136 |
|
if (!fromStart && compare(last, fromKey) < 0) |
1137 |
< |
throw(new NoSuchElementException()); |
1137 |
> |
throw new NoSuchElementException(); |
1138 |
|
return last; |
1139 |
|
} |
1140 |
|
|
1141 |
|
public Map.Entry<K,V> firstEntry() { |
1142 |
< |
TreeMap.Entry<K,V> e = fromStart ? |
1142 |
> |
TreeMap.Entry<K,V> e = fromStart ? |
1143 |
|
getFirstEntry() : getCeilingEntry(fromKey); |
1144 |
|
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
1145 |
|
return null; |
1147 |
|
} |
1148 |
|
|
1149 |
|
public Map.Entry<K,V> lastEntry() { |
1150 |
< |
TreeMap.Entry<K,V> e = toEnd ? |
1150 |
> |
TreeMap.Entry<K,V> e = toEnd ? |
1151 |
|
getLastEntry() : getLowerEntry(toKey); |
1152 |
|
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
1153 |
|
return null; |
1155 |
|
} |
1156 |
|
|
1157 |
|
public Map.Entry<K,V> pollFirstEntry() { |
1158 |
< |
TreeMap.Entry<K,V> e = fromStart ? |
1158 |
> |
TreeMap.Entry<K,V> e = fromStart ? |
1159 |
|
getFirstEntry() : getCeilingEntry(fromKey); |
1160 |
< |
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
1160 |
> |
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
1161 |
|
return null; |
1162 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(e); |
1162 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1163 |
|
deleteEntry(e); |
1164 |
|
return result; |
1165 |
|
} |
1166 |
|
|
1167 |
|
public Map.Entry<K,V> pollLastEntry() { |
1168 |
< |
TreeMap.Entry<K,V> e = toEnd ? |
1168 |
> |
TreeMap.Entry<K,V> e = toEnd ? |
1169 |
|
getLastEntry() : getLowerEntry(toKey); |
1170 |
< |
if (e == null || (!toEnd && compare(e.key, toKey) >= 0)) |
1170 |
> |
if (e == null || (!fromStart && compare(e.key, fromKey) < 0)) |
1171 |
|
return null; |
1172 |
< |
Map.Entry result = new AbstractMap.SimpleImmutableEntry(e); |
1172 |
> |
Map.Entry<K,V> result = new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1173 |
|
deleteEntry(e); |
1174 |
|
return result; |
1175 |
|
} |
1184 |
|
|
1185 |
|
public Map.Entry<K,V> ceilingEntry(K key) { |
1186 |
|
TreeMap.Entry<K,V> e = subceiling(key); |
1187 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1187 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1188 |
|
} |
1189 |
|
|
1190 |
|
public K ceilingKey(K key) { |
1203 |
|
|
1204 |
|
public Map.Entry<K,V> higherEntry(K key) { |
1205 |
|
TreeMap.Entry<K,V> e = subhigher(key); |
1206 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1206 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1207 |
|
} |
1208 |
|
|
1209 |
|
public K higherKey(K key) { |
1221 |
|
|
1222 |
|
public Map.Entry<K,V> floorEntry(K key) { |
1223 |
|
TreeMap.Entry<K,V> e = subfloor(key); |
1224 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1224 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1225 |
|
} |
1226 |
|
|
1227 |
|
public K floorKey(K key) { |
1239 |
|
|
1240 |
|
public Map.Entry<K,V> lowerEntry(K key) { |
1241 |
|
TreeMap.Entry<K,V> e = sublower(key); |
1242 |
< |
return e == null? null : new AbstractMap.SimpleImmutableEntry(e); |
1242 |
> |
return e == null? null : new AbstractMap.SimpleImmutableEntry<K,V>(e); |
1243 |
|
} |
1244 |
|
|
1245 |
|
public K lowerKey(K key) { |
1247 |
|
return e == null? null : e.key; |
1248 |
|
} |
1249 |
|
|
1250 |
< |
private transient Set<Map.Entry<K,V>> entrySet = new EntrySetView(); |
1250 |
> |
private transient Set<Map.Entry<K,V>> entrySet = null; |
1251 |
|
|
1252 |
|
public Set<Map.Entry<K,V>> entrySet() { |
1253 |
< |
return entrySet; |
1253 |
> |
Set<Map.Entry<K,V>> es = entrySet; |
1254 |
> |
return (es != null)? es : (entrySet = new EntrySetView()); |
1255 |
|
} |
1256 |
|
|
1257 |
|
private class EntrySetView extends AbstractSet<Map.Entry<K,V>> { |
1308 |
|
} |
1309 |
|
|
1310 |
|
private transient Set<Map.Entry<K,V>> descendingEntrySetView = null; |
1311 |
< |
private transient Set<K> descendingKeySetView = null; |
1311 |
> |
private transient Set<K> descendingKeySetView = null; |
1312 |
|
|
1313 |
|
public Set<Map.Entry<K,V>> descendingEntrySet() { |
1314 |
|
Set<Map.Entry<K,V>> es = descendingEntrySetView; |
1315 |
< |
return (es != null) ? es : (descendingEntrySetView = new DescendingEntrySetView()); |
1315 |
> |
return (es != null) ? es : |
1316 |
> |
(descendingEntrySetView = new DescendingEntrySetView()); |
1317 |
|
} |
1318 |
|
|
1319 |
|
public Set<K> descendingKeySet() { |
1320 |
|
Set<K> ks = descendingKeySetView; |
1321 |
< |
return (ks != null) ? ks : (descendingKeySetView = new DescendingKeySetView()); |
1321 |
> |
return (ks != null) ? ks : |
1322 |
> |
(descendingKeySetView = new DescendingKeySetView()); |
1323 |
|
} |
1324 |
|
|
1325 |
|
private class DescendingEntrySetView extends EntrySetView { |
1334 |
|
public Iterator<K> iterator() { |
1335 |
|
return new Iterator<K>() { |
1336 |
|
private Iterator<Entry<K,V>> i = descendingEntrySet().iterator(); |
1337 |
< |
|
1337 |
> |
|
1338 |
|
public boolean hasNext() { return i.hasNext(); } |
1339 |
|
public K next() { return i.next().getKey(); } |
1340 |
|
public void remove() { i.remove(); } |
1341 |
|
}; |
1342 |
|
} |
1343 |
< |
|
1343 |
> |
|
1344 |
|
public int size() { |
1345 |
|
return SubMap.this.size(); |
1346 |
|
} |
1347 |
< |
|
1347 |
> |
|
1348 |
|
public boolean contains(Object k) { |
1349 |
|
return SubMap.this.containsKey(k); |
1350 |
|
} |
1351 |
|
} |
1352 |
|
|
1567 |
– |
|
1353 |
|
public NavigableMap<K,V> navigableSubMap(K fromKey, K toKey) { |
1354 |
|
if (!inRange2(fromKey)) |
1355 |
|
throw new IllegalArgumentException("fromKey out of range"); |
1370 |
|
return new SubMap(false, fromKey, toEnd, toKey); |
1371 |
|
} |
1372 |
|
|
1588 |
– |
|
1373 |
|
public SortedMap<K,V> subMap(K fromKey, K toKey) { |
1374 |
|
return navigableSubMap(fromKey, toKey); |
1375 |
|
} |
1382 |
|
return navigableTailMap(fromKey); |
1383 |
|
} |
1384 |
|
|
1385 |
< |
private boolean inRange(K key) { |
1385 |
> |
private boolean inRange(Object key) { |
1386 |
|
return (fromStart || compare(key, fromKey) >= 0) && |
1387 |
|
(toEnd || compare(key, toKey) < 0); |
1388 |
|
} |
1389 |
|
|
1390 |
|
// This form allows the high endpoint (as well as all legit keys) |
1391 |
< |
private boolean inRange2(K key) { |
1391 |
> |
private boolean inRange2(Object key) { |
1392 |
|
return (fromStart || compare(key, fromKey) >= 0) && |
1393 |
|
(toEnd || compare(key, toKey) <= 0); |
1394 |
|
} |
1410 |
|
return next != null; |
1411 |
|
} |
1412 |
|
|
1413 |
< |
Entry<K,V> nextEntry() { |
1413 |
> |
Entry<K,V> nextEntry() { |
1414 |
|
if (next == null) |
1415 |
|
throw new NoSuchElementException(); |
1416 |
|
if (modCount != expectedModCount) |
1437 |
|
EntryIterator(Entry<K,V> first) { |
1438 |
|
super(first); |
1439 |
|
} |
1656 |
– |
|
1440 |
|
public Map.Entry<K,V> next() { |
1441 |
|
return nextEntry(); |
1442 |
|
} |
1481 |
|
} |
1482 |
|
} |
1483 |
|
|
1701 |
– |
|
1484 |
|
/** |
1485 |
|
* Base for Descending Iterators. |
1486 |
|
*/ |
1541 |
|
|
1542 |
|
} |
1543 |
|
|
1762 |
– |
|
1544 |
|
/** |
1545 |
|
* Compares two keys using the correct comparison method for this TreeMap. |
1546 |
|
*/ |
1547 |
< |
private int compare(K k1, K k2) { |
1548 |
< |
return (comparator==null ? ((Comparable</*-*/K>)k1).compareTo(k2) |
1549 |
< |
: comparator.compare((K)k1, (K)k2)); |
1547 |
> |
private int compare(Object k1, Object k2) { |
1548 |
> |
return comparator==null ? ((Comparable<? super K>)k1).compareTo((K)k2) |
1549 |
> |
: comparator.compare((K)k1, (K)k2); |
1550 |
|
} |
1551 |
|
|
1552 |
|
/** |
1553 |
< |
* Test two values for equality. Differs from o1.equals(o2) only in |
1553 |
> |
* Test two values for equality. Differs from o1.equals(o2) only in |
1554 |
|
* that it copes with <tt>null</tt> o1 properly. |
1555 |
|
*/ |
1556 |
|
private static boolean valEquals(Object o1, Object o2) { |
1586 |
|
/** |
1587 |
|
* Returns the key. |
1588 |
|
* |
1589 |
< |
* @return the key. |
1589 |
> |
* @return the key |
1590 |
|
*/ |
1591 |
|
public K getKey() { |
1592 |
|
return key; |
1595 |
|
/** |
1596 |
|
* Returns the value associated with the key. |
1597 |
|
* |
1598 |
< |
* @return the value associated with the key. |
1598 |
> |
* @return the value associated with the key |
1599 |
|
*/ |
1600 |
|
public V getValue() { |
1601 |
|
return value; |
1606 |
|
* value. |
1607 |
|
* |
1608 |
|
* @return the value associated with the key before this method was |
1609 |
< |
* called. |
1609 |
> |
* called |
1610 |
|
*/ |
1611 |
|
public V setValue(V value) { |
1612 |
|
V oldValue = this.value; |
1977 |
|
} |
1978 |
|
|
1979 |
|
/** Intended to be called only from TreeSet.addAll **/ |
1980 |
< |
void addAllForTreeSet(SortedSet<Map.Entry<K,V>> set, V defaultVal) { |
1980 |
> |
void addAllForTreeSet(SortedSet<? extends K> set, V defaultVal) { |
1981 |
|
try { |
1982 |
|
buildFromSorted(set.size(), set.iterator(), null, defaultVal); |
1983 |
|
} catch (java.io.IOException cannotHappen) { |
2002 |
|
* to calling this method. |
2003 |
|
* |
2004 |
|
* @param size the number of keys (or key-value pairs) to be read from |
2005 |
< |
* the iterator or stream. |
2005 |
> |
* the iterator or stream |
2006 |
|
* @param it If non-null, new entries are created from entries |
2007 |
|
* or keys read from this iterator. |
2008 |
|
* @param str If non-null, new entries are created from keys and |
2037 |
|
* @param level the current level of tree. Initial call should be 0. |
2038 |
|
* @param lo the first element index of this subtree. Initial should be 0. |
2039 |
|
* @param hi the last element index of this subtree. Initial should be |
2040 |
< |
* size-1. |
2040 |
> |
* size-1. |
2041 |
|
* @param redLevel the level at which nodes should be red. |
2042 |
|
* Must be equal to computeRedLevel for tree of this size. |
2043 |
|
*/ |
2121 |
|
level++; |
2122 |
|
return level; |
2123 |
|
} |
2343 |
– |
|
2124 |
|
} |