Example usage for java.util List stream

Introduction

In this page you can find the example usage for java.util List stream.

Prototype

default Stream<E> stream()

Source Link

Document

Returns a sequential Stream with this collection as its source.

Usage

From source file:io.sqp.core.messages.RowDataMessage.java

public static RowDataMessage fromTypedData(List<SqpValue> data) {
    // use json format values instead of SqpValue objects itself!
    return new RowDataMessage(data.stream().map(d -> d.getJsonFormatValue()).collect(Collectors.toList()));
}

From source file:com.baidu.rigel.biplatform.tesseract.isservice.search.agg.AggregateCompute.java

public static List<SearchIndexResultRecord> distinct(List<SearchIndexResultRecord> dataList) {
    return dataList.stream().distinct().collect(Collectors.toList());
}

From source file:de.rnd7.libtvdb.util.EpisodeUtil.java

public static String toName(final List<EpisodeInfo> episodeInfos) {
    return episodeInfos.stream().map(EpisodeInfo::toString).collect(Collectors.joining(", "));
}

From source file:Main.java

/**
 * Converts the given list of Double objects into an array of primitive doubles.
 * /* w  w w . ja v  a 2 s  .  c  om*/
 * If the list is null or empty, an empty array will be returned
 * 
 * @param inputList List of Double object to be converted in a primitive array
 * @return
 */
public static double[] listToPrimitiveArray(List<Double> inputList) {

    if (isEmpty(inputList)) {
        return new double[0];
    } else {
        return inputList.stream().mapToDouble(Double::new).toArray();
    }
}

From source file:com.uber.hoodie.DataSourceUtils.java

public static void checkRequiredProperties(PropertiesConfiguration configuration, List<String> checkPropNames) {
    checkPropNames.stream().forEach(prop -> {
        if (!configuration.containsKey(prop)) {
            throw new HoodieNotSupportedException("Required property " + prop + " is missing");
        }//from w  ww. ja  v a2s.  co  m
    });
}

From source file:org.graylog2.indexer.cluster.jest.JestUtils.java

private static List<String> extractReasons(List<JsonObject> rootCauses) {
    return rootCauses.stream().map(rootCause -> asString(rootCause.get("reason"))).collect(Collectors.toList());
}

From source file:Main.java

static public <T> CompletableFuture<List<T>> all(List<CompletableFuture<T>> cf) {
    return CompletableFuture.allOf(cf.toArray(new CompletableFuture[cf.size()]))
            .thenApply(v -> cf.stream().map(CompletableFuture::join).collect(toList()));
}

From source file:Main.java

public static int sum(List<Integer> list) {

    if (list == null) {
        throw new IllegalArgumentException("Can't sum values for NULL list");
    }/*from   w w  w . ja v a 2  s .c o  m*/

    return list.stream().parallel().reduce(0, (sum, val) -> sum + val);

}

From source file:me.yanaga.winter.data.jpa.spring.config.metadata.EnableRepositoriesMetadata.java

public static EnableRepositoriesMetadata of(AnnotationMetadata annotationMetadata) {
    List<String> packageAttributes = getPackageAttributes(annotationMetadata);
    if (packageAttributes.stream().allMatch(l -> l.isEmpty())) {
        return new EnableRepositoriesMetadata(
                ImmutableList.of(obtainPackageName(annotationMetadata.getClassName())));
    }//from www.  j  a  v a 2s .c  o  m
    return new EnableRepositoriesMetadata(packageAttributes);
}

From source file:io.sqp.proxy.customtypes.CustomTypeMapper.java

private static boolean typeMatchesAnyKeyword(String type, List<String> keywords) {
    return keywords.stream().anyMatch(type::contains);
}