Example usage for java.util Set parallelStream

Introduction

In this page you can find the example usage for java.util Set parallelStream.

Prototype

default Stream<E> parallelStream()

Source Link

Document

Returns a possibly parallel Stream with this collection as its source.

Usage

From source file:se.idsecurity.ldifcompare.LdifCompare.java

private void getUniqueEntriesUsingDN(Set<Entry> source, Set<Entry> target, LDIFWriter ldifWriterUnique) {
    Runnable r = () -> {//from  w  ww. ja  va2s.co m
        StopWatch sw = new StopWatch();
        sw.start();
        ConcurrentMap<String, Entry> targetMap = target.parallelStream()
                .collect(Collectors.toConcurrentMap(Entry::getDN, Function.identity()));

        for (Entry e : source) {
            //Get unique entries from the rightLdif file based on DN - no entry with the same DN exist in leftLdif
            String dn = e.getDN();
            if (!targetMap.containsKey(dn)) {
                try {
                    ldifWriterUnique.writeEntry(e);//Entry only exists in rightLdif
                } catch (IOException ex) {
                    logger.error("Error writing to LDIF file", ex);
                }
            }
        }
        fileWriteCdl.countDown();

        sw.stop();
        logger.error("Time taken to process getUniqueEntriesUsingDN(): " + sw.toString());
        sw.reset();
    };

    exec.execute(r);

}

From source file:uk.co.flax.biosolr.builders.ChildNodeFacetTreeBuilder.java

@Override
public List<TreeFacetField> processFacetTree(SolrIndexSearcher searcher, Map<String, Integer> facetMap)
        throws IOException {
    // Check that all of the given fields are in the searcher's schema
    checkFieldsInSchema(searcher, docFields);

    // Extract the facet keys to a volatile set
    Set<String> facetKeys = new HashSet<>(facetMap.keySet());

    // Build a map of parent - child node IDs. This should contain the parents
    // of all our starting facet terms.
    Map<String, Set<String>> nodeChildren = findParentEntries(searcher, facetKeys);

    // Find the details for the starting facet terms, if there are any which haven't 
    // been found already.
    facetKeys.removeAll(nodeChildren.keySet());
    nodeChildren.putAll(filterEntriesByField(searcher, facetKeys, getNodeField()));

    // Find the top nodes
    Set<String> topNodes = findTopLevelNodes(nodeChildren);
    LOGGER.debug("Found {} top level nodes", topNodes.size());

    // Convert to a list of TreeFacetFields
    return topNodes.parallelStream().map(node -> buildAccumulatedEntryTree(0, node, nodeChildren, facetMap))
            .collect(Collectors.toList());
}

From source file:uk.co.flax.biosolr.builders.ParentNodeFacetTreeBuilder.java

@Override
public List<TreeFacetField> processFacetTree(SolrIndexSearcher searcher, Map<String, Integer> facetMap)
        throws IOException {
    checkFieldsInSchema(searcher, docFields);

    // Extract the facet keys to a volatile set
    Set<String> facetKeys = new HashSet<>(facetMap.keySet());

    // Build a map of parent - child node IDs. This should contain the parents
    // of all our starting facet terms.
    Map<String, Set<String>> nodeChildren = findParentEntries(searcher, facetKeys);

    // Find the top nodes
    Set<String> topNodes = findTopLevelNodes(nodeChildren);
    LOGGER.debug("Found {} top level nodes", topNodes.size());

    // Convert to a list of TreeFacetFields
    return topNodes.parallelStream().map(node -> buildAccumulatedEntryTree(0, node, nodeChildren, facetMap))
            .collect(Collectors.toList());
}

From source file:utils.StringManip.java

public static String getMultiwordRegexString(Set<String> stopwords) {
    return StringUtils.join(
            stopwords.parallelStream().map(StringManip::getOnlyWordRegex).collect(Collectors.toList()), "|");
}