author | psandoz |
Tue, 23 Jun 2015 09:49:55 +0200 | |
changeset 31248 | 0006a0e47a04 |
parent 19800 | 6e1fef53ea55 |
child 31258 | 8e44e5e2563e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.util.stream; |
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import java.util.Collections; |
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import java.util.EnumSet; |
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import java.util.PrimitiveIterator; |
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import java.util.Set; |
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import java.util.Spliterator; |
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import java.util.function.Consumer; |
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import java.util.function.DoubleConsumer; |
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import java.util.function.Function; |
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/** |
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* Test scenarios for double streams. |
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* |
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* Each scenario is provided with a data source, a function that maps a fresh |
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* stream (as provided by the data source) to a new stream, and a sink to |
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* receive results. Each scenario describes a different way of computing the |
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* stream contents. The test driver will ensure that all scenarios produce |
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* the same output (modulo allowable differences in ordering). |
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*/ |
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@SuppressWarnings({"rawtypes", "unchecked"}) |
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public enum DoubleStreamTestScenario implements OpTestCase.BaseStreamTestScenario { |
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STREAM_FOR_EACH_WITH_CLOSE(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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DoubleStream s = m.apply(data.stream()); |
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if (s.isParallel()) { |
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s = s.sequential(); |
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} |
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s.forEach(b); |
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s.close(); |
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} |
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}, |
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STREAM_TO_ARRAY(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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for (double t : m.apply(data.stream()).toArray()) { |
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b.accept(t); |
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} |
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} |
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}, |
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STREAM_ITERATOR(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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for (PrimitiveIterator.OfDouble seqIter = m.apply(data.stream()).iterator(); seqIter.hasNext(); ) |
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b.accept(seqIter.nextDouble()); |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate in pull mode |
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STREAM_SPLITERATOR(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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for (Spliterator.OfDouble spl = m.apply(data.stream()).spliterator(); spl.tryAdvance(b); ) { |
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} |
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} |
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}, |
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// Wrap as stream, spliterate, then split a few times mixing advances with forEach |
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STREAM_SPLITERATOR_WITH_MIXED_TRAVERSE_AND_SPLIT(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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SpliteratorTestHelper.mixedTraverseAndSplit(b, m.apply(data.stream()).spliterator()); |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate in pull mode |
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STREAM_SPLITERATOR_FOREACH(false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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m.apply(data.stream()).spliterator().forEachRemaining(b); |
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} |
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}, |
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PAR_STREAM_SEQUENTIAL_FOR_EACH(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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m.apply(data.parallelStream()).sequential().forEach(b); |
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} |
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}, |
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// Wrap as parallel stream + forEachOrdered |
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PAR_STREAM_FOR_EACH_ORDERED(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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// @@@ Want to explicitly select ordered equalator |
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m.apply(data.parallelStream()).forEachOrdered(b); |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate sequentially |
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PAR_STREAM_SPLITERATOR(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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for (Spliterator.OfDouble spl = m.apply(data.parallelStream()).spliterator(); spl.tryAdvance(b); ) { |
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} |
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} |
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}, |
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// Wrap as stream, and spliterate then iterate sequentially |
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PAR_STREAM_SPLITERATOR_FOREACH(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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m.apply(data.parallelStream()).spliterator().forEachRemaining(b); |
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} |
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}, |
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PAR_STREAM_TO_ARRAY(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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for (double t : m.apply(data.parallelStream()).toArray()) |
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b.accept(t); |
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} |
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}, |
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// Wrap as parallel stream, get the spliterator, wrap as a stream + toArray |
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PAR_STREAM_SPLITERATOR_STREAM_TO_ARRAY(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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DoubleStream s = m.apply(data.parallelStream()); |
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Spliterator.OfDouble sp = s.spliterator(); |
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DoubleStream ss = StreamSupport.doubleStream(() -> sp, |
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StreamOpFlag.toCharacteristics(OpTestCase.getStreamFlags(s)) |
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| (sp.getExactSizeIfKnown() < 0 ? 0 : Spliterator.SIZED), true); |
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for (double t : ss.toArray()) |
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b.accept(t); |
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} |
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}, |
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PAR_STREAM_TO_ARRAY_CLEAR_SIZED(true) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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S_IN pipe1 = (S_IN) OpTestCase.chain(data.parallelStream(), |
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new FlagDeclaringOp(StreamOpFlag.NOT_SIZED, data.getShape())); |
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DoubleStream pipe2 = m.apply(pipe1); |
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|
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for (double t : pipe2.toArray()) |
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b.accept(t); |
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} |
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}, |
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|
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// Wrap as parallel stream + forEach synchronizing |
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PAR_STREAM_FOR_EACH(true, false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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m.apply(data.parallelStream()).forEach(e -> { |
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synchronized (data) { |
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b.accept(e); |
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} |
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}); |
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} |
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}, |
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|
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// Wrap as parallel stream + forEach synchronizing and clear SIZED flag |
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PAR_STREAM_FOR_EACH_CLEAR_SIZED(true, false) { |
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<T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m) { |
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S_IN pipe1 = (S_IN) OpTestCase.chain(data.parallelStream(), |
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new FlagDeclaringOp(StreamOpFlag.NOT_SIZED, data.getShape())); |
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m.apply(pipe1).forEach(e -> { |
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synchronized (data) { |
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b.accept(e); |
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} |
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}); |
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} |
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}, |
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; |
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|
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// The set of scenarios that clean the SIZED flag |
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public static final Set<DoubleStreamTestScenario> CLEAR_SIZED_SCENARIOS = Collections.unmodifiableSet( |
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EnumSet.of(PAR_STREAM_TO_ARRAY_CLEAR_SIZED, PAR_STREAM_FOR_EACH_CLEAR_SIZED)); |
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|
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private boolean isParallel; |
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private final boolean isOrdered; |
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|
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DoubleStreamTestScenario(boolean isParallel) { |
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this(isParallel, true); |
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} |
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DoubleStreamTestScenario(boolean isParallel, boolean isOrdered) { |
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this.isParallel = isParallel; |
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this.isOrdered = isOrdered; |
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} |
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|
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public StreamShape getShape() { |
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return StreamShape.DOUBLE_VALUE; |
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} |
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public boolean isParallel() { |
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return isParallel; |
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} |
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|
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public boolean isOrdered() { |
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return isOrdered; |
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} |
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|
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public <T, U, S_IN extends BaseStream<T, S_IN>, S_OUT extends BaseStream<U, S_OUT>> |
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void run(TestData<T, S_IN> data, Consumer<U> b, Function<S_IN, S_OUT> m) { |
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_run(data, (DoubleConsumer) b, (Function<S_IN, DoubleStream>) m); |
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} |
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|
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abstract <T, S_IN extends BaseStream<T, S_IN>> |
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void _run(TestData<T, S_IN> data, DoubleConsumer b, Function<S_IN, DoubleStream> m); |
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|
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} |