src/extra166y/ParallelDoubleArrayWithLongMapping.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

package extra166y;

import jsr166y.*;
import static extra166y.Ops.*;
import java.util.*;
import java.util.concurrent.atomic.*;

/**
 * A prefix view of ParallelDoubleArray that causes operations to apply
 * to mappings of elements, not to the elements themselves.
 * Instances of this class may be constructed only via prefix
 * methods of ParallelDoubleArray or its other prefix classes.
 */
public abstract class ParallelDoubleArrayWithLongMapping extends AbstractParallelAnyArray.DPap {
    ParallelDoubleArrayWithLongMapping
        (ForkJoinPool ex, int origin, int fence, double[] array) {
        super(ex, origin, fence, array);
    }

    /**
     * Applies the given procedure.
     * @param procedure the procedure
     */
    public void apply(LongProcedure procedure) {
        ex.invoke(new PAS.FJLApply(this, origin, fence, null, procedure));
    }

    /**
     * Returns reduction of mapped elements.
     * @param reducer the reducer
     * @param base the result for an empty array
     * @return reduction
     */
    public long reduce(LongReducer reducer, long base) {
        PAS.FJLReduce f = new PAS.FJLReduce
            (this, origin, fence, null, reducer, base);
        ex.invoke(f);
        return f.result;
    }

    /**
     * Returns the minimum element, or Long.MAX_VALUE if empty.
     * @return minimum element, or Long.MAX_VALUE if empty
     */
    public long min() {
        return reduce(CommonOps.naturalLongMinReducer(), Long.MAX_VALUE);
    }

    /**
     * Returns the minimum element, or Long.MAX_VALUE if empty.
     * @param comparator the comparator
     * @return minimum element, or Long.MAX_VALUE if empty
     */
    public long min(LongComparator comparator) {
        return reduce(CommonOps.longMinReducer(comparator), Long.MAX_VALUE);
    }

    /**
     * Returns the maximum element, or Long.MIN_VALUE if empty.
     * @return maximum element, or Long.MIN_VALUE if empty
     */
    public long max() {
        return reduce(CommonOps.naturalLongMaxReducer(), Long.MIN_VALUE);
    }

    /**
     * Returns the maximum element, or Long.MIN_VALUE if empty.
     * @param comparator the comparator
     * @return maximum element, or Long.MIN_VALUE if empty
     */
    public long max(LongComparator comparator) {
        return reduce(CommonOps.longMaxReducer(comparator), Long.MIN_VALUE);
    }

    /**
     * Returns the sum of elements.
     * @return the sum of elements
     */
    public long sum() {
        return reduce(CommonOps.longAdder(), 0);
    }

    /**
     * Returns summary statistics.
     * @param comparator the comparator to use for
     * locating minimum and maximum elements
     * @return the summary
     */
    public ParallelLongArray.SummaryStatistics summary
        (LongComparator comparator) {
        PAS.FJLStats f = new PAS.FJLStats
            (this, origin, fence, null, comparator);
        ex.invoke(f);
        return f;
    }

    /**
     * Returns summary statistics, using natural comparator.
     * @return the summary
     */
    public ParallelLongArray.SummaryStatistics summary() {
        return summary(CommonOps.naturalLongComparator());
    }

    /**
     * Returns a new ParallelLongArray holding mappings.
     * @return a new ParallelLongArray holding mappings
     */
    public ParallelLongArray all() {
        return new ParallelLongArray(ex, allLongs());
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on mapped elements of the array using the given op.
     * @param op the op
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithDoubleMapping withMapping
        (LongToDouble op);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mapped elements of the array using the given op.
     * @param op the op
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithLongMapping withMapping
        (LongOp op);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mapped elements of the array using the given op.
     * @param op the op
     * @return operation prefix
     */
    public abstract <U> ParallelDoubleArrayWithMapping<U> withMapping
        (LongToObject<? extends U> op);

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V,W,X> ParallelDoubleArrayWithMapping<W> withMapping
        (LongAndObjectToObject<? super V, ? extends W> combiner,
         ParallelArrayWithMapping<X,V> other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V> ParallelDoubleArrayWithMapping<V> withMapping
        (LongAndDoubleToObject<? extends V> combiner,
         ParallelDoubleArrayWithDoubleMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V> ParallelDoubleArrayWithMapping<V> withMapping
        (LongAndLongToObject<? extends V> combiner,
         ParallelLongArrayWithLongMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V,W> ParallelDoubleArrayWithDoubleMapping withMapping
        (LongAndObjectToDouble<? super V> combiner,
         ParallelArrayWithMapping<W,V> other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithDoubleMapping withMapping
        (LongAndDoubleToDouble combiner,
         ParallelDoubleArrayWithDoubleMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithDoubleMapping withMapping
        (LongAndLongToDouble combiner,
         ParallelLongArrayWithLongMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public <V,W> ParallelDoubleArrayWithLongMapping withMapping
        (LongAndObjectToLong<? super V> combiner,
         ParallelArrayWithMapping<W,V> other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithLongMapping withMapping
        (LongAndDoubleToLong combiner,
         ParallelDoubleArrayWithDoubleMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on binary mappings of this array and the other array.
     * @param combiner the combiner
     * @param other the other array
     * @return operation prefix
     * @throws IllegalArgumentException if other array is a
     * filtered view (all filters must precede all mappings)
     */
    public ParallelDoubleArrayWithLongMapping withMapping
        (BinaryLongOp combiner,
         ParallelLongArrayWithLongMapping other) {
        if (other.hasFilter()) throw new IllegalArgumentException();
        return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
    }

    /**
     * Returns an operation prefix that causes a method to operate
     * on mappings of this array using the given mapper that
     * accepts as arguments an element's current index and value
     * (as mapped by preceding mappings, if any), and produces a
     * new value.
     * @param mapper the mapper
     * @return operation prefix
     */
    public abstract <V> ParallelDoubleArrayWithMapping<V> withIndexedMapping
        (IntAndLongToObject<? extends V> mapper);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mappings of this array using the given mapper that
     * accepts as arguments an element's current index and value
     * (as mapped by preceding mappings, if any), and produces a
     * new value.
     * @param mapper the mapper
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithDoubleMapping withIndexedMapping
        (IntAndLongToDouble mapper);

    /**
     * Returns an operation prefix that causes a method to operate
     * on mappings of this array using the given mapper that
     * accepts as arguments an element's current index and value
     * (as mapped by preceding mappings, if any), and produces a
     * new value.
     * @param mapper the mapper
     * @return operation prefix
     */
    public abstract ParallelDoubleArrayWithLongMapping withIndexedMapping
        (IntAndLongToLong mapper);

    /**
     * Returns an Iterable view to sequentially step through mapped
     * elements also obeying bound and filter constraints, without
     * performing computations to evaluate them in parallel.
     * @return the Iterable view
     */
    public Iterable<Long> sequentially() {
        return new SequentiallyAsLong();
    }
}
Revision:	1.6
Committed:	Thu Feb 26 06:53:34 2015 UTC (9 years, 2 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.5:	+0 -1 lines
Log Message:	delete unused imports
#	Content
1	/*
2	* Written by Doug Lea with assistance from members of JCP JSR-166
3	* Expert Group and released to the public domain, as explained at
4	* http://creativecommons.org/publicdomain/zero/1.0/
5	*/
6
7	package extra166y;
8
9	import jsr166y.*;
10	import static extra166y.Ops.*;
11	import java.util.*;
12	import java.util.concurrent.atomic.*;
13
14	/**
15	* A prefix view of ParallelDoubleArray that causes operations to apply
16	* to mappings of elements, not to the elements themselves.
17	* Instances of this class may be constructed only via prefix
18	* methods of ParallelDoubleArray or its other prefix classes.
19	*/
20	public abstract class ParallelDoubleArrayWithLongMapping extends AbstractParallelAnyArray.DPap {
21	ParallelDoubleArrayWithLongMapping
22	(ForkJoinPool ex, int origin, int fence, double[] array) {
23	super(ex, origin, fence, array);
24	}
25
26	/**
27	* Applies the given procedure.
28	* @param procedure the procedure
29	*/
30	public void apply(LongProcedure procedure) {
31	ex.invoke(new PAS.FJLApply(this, origin, fence, null, procedure));
32	}
33
34	/**
35	* Returns reduction of mapped elements.
36	* @param reducer the reducer
37	* @param base the result for an empty array
38	* @return reduction
39	*/
40	public long reduce(LongReducer reducer, long base) {
41	PAS.FJLReduce f = new PAS.FJLReduce
42	(this, origin, fence, null, reducer, base);
43	ex.invoke(f);
44	return f.result;
45	}
46
47	/**
48	* Returns the minimum element, or Long.MAX_VALUE if empty.
49	* @return minimum element, or Long.MAX_VALUE if empty
50	*/
51	public long min() {
52	return reduce(CommonOps.naturalLongMinReducer(), Long.MAX_VALUE);
53	}
54
55	/**
56	* Returns the minimum element, or Long.MAX_VALUE if empty.
57	* @param comparator the comparator
58	* @return minimum element, or Long.MAX_VALUE if empty
59	*/
60	public long min(LongComparator comparator) {
61	return reduce(CommonOps.longMinReducer(comparator), Long.MAX_VALUE);
62	}
63
64	/**
65	* Returns the maximum element, or Long.MIN_VALUE if empty.
66	* @return maximum element, or Long.MIN_VALUE if empty
67	*/
68	public long max() {
69	return reduce(CommonOps.naturalLongMaxReducer(), Long.MIN_VALUE);
70	}
71
72	/**
73	* Returns the maximum element, or Long.MIN_VALUE if empty.
74	* @param comparator the comparator
75	* @return maximum element, or Long.MIN_VALUE if empty
76	*/
77	public long max(LongComparator comparator) {
78	return reduce(CommonOps.longMaxReducer(comparator), Long.MIN_VALUE);
79	}
80
81	/**
82	* Returns the sum of elements.
83	* @return the sum of elements
84	*/
85	public long sum() {
86	return reduce(CommonOps.longAdder(), 0);
87	}
88
89	/**
90	* Returns summary statistics.
91	* @param comparator the comparator to use for
92	* locating minimum and maximum elements
93	* @return the summary
94	*/
95	public ParallelLongArray.SummaryStatistics summary
96	(LongComparator comparator) {
97	PAS.FJLStats f = new PAS.FJLStats
98	(this, origin, fence, null, comparator);
99	ex.invoke(f);
100	return f;
101	}
102
103	/**
104	* Returns summary statistics, using natural comparator.
105	* @return the summary
106	*/
107	public ParallelLongArray.SummaryStatistics summary() {
108	return summary(CommonOps.naturalLongComparator());
109	}
110
111	/**
112	* Returns a new ParallelLongArray holding mappings.
113	* @return a new ParallelLongArray holding mappings
114	*/
115	public ParallelLongArray all() {
116	return new ParallelLongArray(ex, allLongs());
117	}
118
119	/**
120	* Returns an operation prefix that causes a method to operate
121	* on mapped elements of the array using the given op.
122	* @param op the op
123	* @return operation prefix
124	*/
125	public abstract ParallelDoubleArrayWithDoubleMapping withMapping
126	(LongToDouble op);
127
128	/**
129	* Returns an operation prefix that causes a method to operate
130	* on mapped elements of the array using the given op.
131	* @param op the op
132	* @return operation prefix
133	*/
134	public abstract ParallelDoubleArrayWithLongMapping withMapping
135	(LongOp op);
136
137	/**
138	* Returns an operation prefix that causes a method to operate
139	* on mapped elements of the array using the given op.
140	* @param op the op
141	* @return operation prefix
142	*/
143	public abstract <U> ParallelDoubleArrayWithMapping<U> withMapping
144	(LongToObject<? extends U> op);
145
146	/**
147	* Returns an operation prefix that causes a method to operate
148	* on binary mappings of this array and the other array.
149	* @param combiner the combiner
150	* @param other the other array
151	* @return operation prefix
152	* @throws IllegalArgumentException if other array is a
153	* filtered view (all filters must precede all mappings)
154	*/
155	public <V,W,X> ParallelDoubleArrayWithMapping<W> withMapping
156	(LongAndObjectToObject<? super V, ? extends W> combiner,
157	ParallelArrayWithMapping<X,V> other) {
158	if (other.hasFilter()) throw new IllegalArgumentException();
159	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
160	}
161
162	/**
163	* Returns an operation prefix that causes a method to operate
164	* on binary mappings of this array and the other array.
165	* @param combiner the combiner
166	* @param other the other array
167	* @return operation prefix
168	* @throws IllegalArgumentException if other array is a
169	* filtered view (all filters must precede all mappings)
170	*/
171	public <V> ParallelDoubleArrayWithMapping<V> withMapping
172	(LongAndDoubleToObject<? extends V> combiner,
173	ParallelDoubleArrayWithDoubleMapping other) {
174	if (other.hasFilter()) throw new IllegalArgumentException();
175	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
176	}
177
178	/**
179	* Returns an operation prefix that causes a method to operate
180	* on binary mappings of this array and the other array.
181	* @param combiner the combiner
182	* @param other the other array
183	* @return operation prefix
184	* @throws IllegalArgumentException if other array is a
185	* filtered view (all filters must precede all mappings)
186	*/
187	public <V> ParallelDoubleArrayWithMapping<V> withMapping
188	(LongAndLongToObject<? extends V> combiner,
189	ParallelLongArrayWithLongMapping other) {
190	if (other.hasFilter()) throw new IllegalArgumentException();
191	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
192	}
193
194	/**
195	* Returns an operation prefix that causes a method to operate
196	* on binary mappings of this array and the other array.
197	* @param combiner the combiner
198	* @param other the other array
199	* @return operation prefix
200	* @throws IllegalArgumentException if other array is a
201	* filtered view (all filters must precede all mappings)
202	*/
203	public <V,W> ParallelDoubleArrayWithDoubleMapping withMapping
204	(LongAndObjectToDouble<? super V> combiner,
205	ParallelArrayWithMapping<W,V> other) {
206	if (other.hasFilter()) throw new IllegalArgumentException();
207	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
208	}
209
210	/**
211	* Returns an operation prefix that causes a method to operate
212	* on binary mappings of this array and the other array.
213	* @param combiner the combiner
214	* @param other the other array
215	* @return operation prefix
216	* @throws IllegalArgumentException if other array is a
217	* filtered view (all filters must precede all mappings)
218	*/
219	public ParallelDoubleArrayWithDoubleMapping withMapping
220	(LongAndDoubleToDouble combiner,
221	ParallelDoubleArrayWithDoubleMapping other) {
222	if (other.hasFilter()) throw new IllegalArgumentException();
223	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
224	}
225
226	/**
227	* Returns an operation prefix that causes a method to operate
228	* on binary mappings of this array and the other array.
229	* @param combiner the combiner
230	* @param other the other array
231	* @return operation prefix
232	* @throws IllegalArgumentException if other array is a
233	* filtered view (all filters must precede all mappings)
234	*/
235	public ParallelDoubleArrayWithDoubleMapping withMapping
236	(LongAndLongToDouble combiner,
237	ParallelLongArrayWithLongMapping other) {
238	if (other.hasFilter()) throw new IllegalArgumentException();
239	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
240	}
241
242	/**
243	* Returns an operation prefix that causes a method to operate
244	* on binary mappings of this array and the other array.
245	* @param combiner the combiner
246	* @param other the other array
247	* @return operation prefix
248	* @throws IllegalArgumentException if other array is a
249	* filtered view (all filters must precede all mappings)
250	*/
251	public <V,W> ParallelDoubleArrayWithLongMapping withMapping
252	(LongAndObjectToLong<? super V> combiner,
253	ParallelArrayWithMapping<W,V> other) {
254	if (other.hasFilter()) throw new IllegalArgumentException();
255	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
256	}
257
258	/**
259	* Returns an operation prefix that causes a method to operate
260	* on binary mappings of this array and the other array.
261	* @param combiner the combiner
262	* @param other the other array
263	* @return operation prefix
264	* @throws IllegalArgumentException if other array is a
265	* filtered view (all filters must precede all mappings)
266	*/
267	public ParallelDoubleArrayWithLongMapping withMapping
268	(LongAndDoubleToLong combiner,
269	ParallelDoubleArrayWithDoubleMapping other) {
270	if (other.hasFilter()) throw new IllegalArgumentException();
271	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
272	}
273
274	/**
275	* Returns an operation prefix that causes a method to operate
276	* on binary mappings of this array and the other array.
277	* @param combiner the combiner
278	* @param other the other array
279	* @return operation prefix
280	* @throws IllegalArgumentException if other array is a
281	* filtered view (all filters must precede all mappings)
282	*/
283	public ParallelDoubleArrayWithLongMapping withMapping
284	(BinaryLongOp combiner,
285	ParallelLongArrayWithLongMapping other) {
286	if (other.hasFilter()) throw new IllegalArgumentException();
287	return withIndexedMapping(AbstractParallelAnyArray.indexedMapper(combiner, other, origin));
288	}
289
290	/**
291	* Returns an operation prefix that causes a method to operate
292	* on mappings of this array using the given mapper that
293	* accepts as arguments an element's current index and value
294	* (as mapped by preceding mappings, if any), and produces a
295	* new value.
296	* @param mapper the mapper
297	* @return operation prefix
298	*/
299	public abstract <V> ParallelDoubleArrayWithMapping<V> withIndexedMapping
300	(IntAndLongToObject<? extends V> mapper);
301
302	/**
303	* Returns an operation prefix that causes a method to operate
304	* on mappings of this array using the given mapper that
305	* accepts as arguments an element's current index and value
306	* (as mapped by preceding mappings, if any), and produces a
307	* new value.
308	* @param mapper the mapper
309	* @return operation prefix
310	*/
311	public abstract ParallelDoubleArrayWithDoubleMapping withIndexedMapping
312	(IntAndLongToDouble mapper);
313
314	/**
315	* Returns an operation prefix that causes a method to operate
316	* on mappings of this array using the given mapper that
317	* accepts as arguments an element's current index and value
318	* (as mapped by preceding mappings, if any), and produces a
319	* new value.
320	* @param mapper the mapper
321	* @return operation prefix
322	*/
323	public abstract ParallelDoubleArrayWithLongMapping withIndexedMapping
324	(IntAndLongToLong mapper);
325
326	/**
327	* Returns an Iterable view to sequentially step through mapped
328	* elements also obeying bound and filter constraints, without
329	* performing computations to evaluate them in parallel.
330	* @return the Iterable view
331	*/
332	public Iterable<Long> sequentially() {
333	return new SequentiallyAsLong();
334	}
335	}