| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package java.util.stream; |
| |
| import org.testng.Assert; |
| |
| import java.util.Spliterator; |
| import java.util.function.IntFunction; |
| |
| /** Test helper class for java.util.stream test framework */ |
| public final class CollectorOps { |
| private CollectorOps() { } |
| |
| public static <E_IN> StatefulTestOp<E_IN> collector() { |
| return new StatefulCollector<>(0, StreamShape.REFERENCE); |
| } |
| |
| /* Utility classes for collecting output of intermediate pipeline stages */ |
| public static class StatefulCollector<E_IN> implements StatefulTestOp<E_IN> { |
| private final int opFlags; |
| private final StreamShape inputShape; |
| |
| public StatefulCollector(int opFlags, StreamShape inputShape) { |
| this.opFlags = opFlags; |
| this.inputShape = inputShape; |
| } |
| |
| @Override |
| public StreamShape inputShape() { |
| return inputShape; |
| } |
| |
| @Override |
| public StreamShape outputShape() { |
| return inputShape; |
| } |
| |
| @Override |
| public int opGetFlags() { |
| return opFlags; |
| } |
| |
| @Override |
| public Sink<E_IN> opWrapSink(int flags, boolean parallel, Sink<E_IN> sink) { |
| return sink; |
| } |
| |
| @Override |
| public <P_IN> Node<E_IN> opEvaluateParallel(PipelineHelper<E_IN> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<E_IN[]> generator) { |
| return helper.evaluate(spliterator, false, generator); |
| } |
| } |
| |
| public static class TestParallelSizedOp<T> extends StatefulCollector<T> { |
| public TestParallelSizedOp() { |
| this(StreamShape.REFERENCE); |
| } |
| |
| protected TestParallelSizedOp(StreamShape shape) { |
| super(0, shape); |
| } |
| |
| @Override |
| public <P_IN> Node<T> opEvaluateParallel(PipelineHelper<T> helper, |
| Spliterator<P_IN> spliterator, |
| IntFunction<T[]> generator) { |
| int flags = helper.getStreamAndOpFlags(); |
| |
| Assert.assertTrue(StreamOpFlag.SIZED.isKnown(flags)); |
| return super.opEvaluateParallel(helper, spliterator, generator); |
| } |
| |
| public static class OfInt extends TestParallelSizedOp<Integer> { |
| public OfInt() { |
| super(StreamShape.INT_VALUE); |
| } |
| } |
| |
| public static class OfLong extends TestParallelSizedOp<Long> { |
| public OfLong() { |
| super(StreamShape.LONG_VALUE); |
| } |
| } |
| |
| public static class OfDouble extends TestParallelSizedOp<Double> { |
| public OfDouble() { |
| super(StreamShape.DOUBLE_VALUE); |
| } |
| } |
| } |
| } |