java.util.List.parallelStream()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.util.List.parallelStream()方法的一些代码示例,展示了List.parallelStream()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。List.parallelStream()方法的具体详情如下:
包路径:java.util.List
类名称:List
方法名:parallelStream

List.parallelStream介绍

暂无

代码示例

代码示例来源:origin: neo4j/neo4j

@Override
public IndexSample sampleIndex()
{
  return indexSamplers.parallelStream()
      .map( this::sampleIndex )
      .reduce( this::combine )
      .get();
}

代码示例来源:origin: alibaba/Sentinel

public static <R> CompletableFuture<List<R>> sequenceSuccessFuture(List<CompletableFuture<R>> futures) {
  return CompletableFuture.supplyAsync(() -> futures.parallelStream()
    .map(AsyncUtils::getValue)
    .filter(Objects::nonNull)
    .collect(Collectors.toList())
  );
}

代码示例来源:origin: spring-projects/spring-framework

/**
 * Return the candidate types that are associated with the specified stereotype.
 * @param basePackage the package to check for candidates
 * @param stereotype the stereotype to use
 * @return the candidate types associated with the specified {@code stereotype}
 * or an empty set if none has been found for the specified {@code basePackage}
 */
public Set<String> getCandidateTypes(String basePackage, String stereotype) {
  List<Entry> candidates = this.index.get(stereotype);
  if (candidates != null) {
    return candidates.parallelStream()
        .filter(t -> t.match(basePackage))
        .map(t -> t.type)
        .collect(Collectors.toSet());
  }
  return Collections.emptySet();
}

代码示例来源:origin: neo4j/neo4j

@Override
public IndexSampler createSampler()
{
  List<IndexSampler> indexSamplers = indexReaders.parallelStream()
      .map( SimpleIndexReader::createSampler )
      .collect( Collectors.toList() );
  return new AggregatingIndexSampler( indexSamplers );
}

代码示例来源:origin: neo4j/neo4j

@Override
public long countIndexedNodes( long nodeId, int[] propertyKeyIds, Value... propertyValues )
{
  return indexReaders.parallelStream()
      .mapToLong( reader -> reader.countIndexedNodes( nodeId, propertyKeyIds, propertyValues ) )
      .sum();
}

代码示例来源:origin: neo4j/neo4j

private PrimitiveLongResourceIterator partitionedOperation(
      Function<SimpleIndexReader,PrimitiveLongResourceIterator> readerFunction )
  {
    return PrimitiveLongResourceCollections.concat( indexReaders.parallelStream()
        .map( readerFunction )
        .collect( Collectors.toList() ) );
  }
}

代码示例来源:origin: baomidou/mybatis-plus

/**
 * 逻辑删除
 */
public boolean isLogicDelete(String logicDeletePropertyName) {
  return fields.parallelStream().anyMatch(tf -> tf.getName().equals(logicDeletePropertyName));
}

代码示例来源:origin: org.springframework/spring-context

/**
 * Return the candidate types that are associated with the specified stereotype.
 * @param basePackage the package to check for candidates
 * @param stereotype the stereotype to use
 * @return the candidate types associated with the specified {@code stereotype}
 * or an empty set if none has been found for the specified {@code basePackage}
 */
public Set<String> getCandidateTypes(String basePackage, String stereotype) {
  List<Entry> candidates = this.index.get(stereotype);
  if (candidates != null) {
    return candidates.parallelStream()
        .filter(t -> t.match(basePackage))
        .map(t -> t.type)
        .collect(Collectors.toSet());
  }
  return Collections.emptySet();
}

代码示例来源:origin: neo4j/neo4j

/**
 * Refresh all partitions to make newly inserted data visible for readers.
 *
 * @throws IOException
 */
public void maybeRefreshBlocking() throws IOException
{
  try
  {
    getPartitions().parallelStream().forEach( this::maybeRefreshPartition );
  }
  catch ( UncheckedIOException e )
  {
    throw e.getCause();
  }
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void index_with_valueFunction_parallel_stream() {
 Multimap<String, String> multimap = HUGE_LIST.parallelStream().collect(index(identity(), identity()));
 assertThat(multimap.keySet()).isEqualTo(HUGE_SET);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void uniqueIndex_with_valueFunction_and_expected_size_parallel_stream() {
 Map<String, String> map = HUGE_LIST.parallelStream().collect(uniqueIndex(identity(), identity(), HUGE_LIST.size()));
 assertThat(map.keySet()).isEqualTo(HUGE_SET);
 assertThat(map.values()).containsExactlyElementsOf(HUGE_SET);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void index_parallel_stream() {
 Multimap<String, String> multimap = HUGE_LIST.parallelStream().collect(index(identity()));
 assertThat(multimap.keySet()).isEqualTo(HUGE_SET);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void uniqueIndex_with_valueFunction_parallel_stream() {
 Map<String, String> map = HUGE_LIST.parallelStream().collect(uniqueIndex(identity(), identity()));
 assertThat(map.keySet()).isEqualTo(HUGE_SET);
 assertThat(map.values()).containsExactlyElementsOf(HUGE_SET);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void uniqueIndex_with_expected_size_parallel_stream() {
 Map<String, String> map = HUGE_LIST.parallelStream().collect(uniqueIndex(identity(), HUGE_LIST.size()));
 assertThat(map.keySet()).isEqualTo(HUGE_SET);
 assertThat(map.values()).containsExactlyElementsOf(HUGE_SET);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void uniqueIndex_parallel_stream() {
 Map<String, String> map = HUGE_LIST.parallelStream().collect(uniqueIndex(identity()));
 assertThat(map.keySet()).isEqualTo(HUGE_SET);
 assertThat(map.values()).containsExactlyElementsOf(HUGE_SET);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void toList_with_size_parallel_stream() {
 assertThat(HUGE_LIST.parallelStream().collect(toList(HUGE_LIST.size()))).isEqualTo(HUGE_LIST);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void toArrayList_with_size_parallel_stream() {
 assertThat(HUGE_LIST.parallelStream().collect(toArrayList(HUGE_LIST.size()))).isEqualTo(HUGE_LIST);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void toList_parallel_stream() {
 assertThat(HUGE_LIST.parallelStream().collect(toList())).isEqualTo(HUGE_LIST);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void toArrayList_parallel_stream() {
 assertThat(HUGE_LIST.parallelStream().collect(toArrayList())).isEqualTo(HUGE_LIST);
}

代码示例来源:origin: SonarSource/sonarqube

@Test
public void join_does_not_support_parallel_stream_and_fails_with_ISE() {
 Stream<String> hugeStream = HUGE_LIST.parallelStream();
 expectedException.expect(IllegalStateException.class);
 expectedException.expectMessage("Parallel processing is not supported");
 hugeStream.collect(join(Joiner.on(" ")));
}

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