Example usage for com.google.common.collect Maps newHashMapWithExpectedSize

Introduction

In this page you can find the example usage for com.google.common.collect Maps newHashMapWithExpectedSize.

Prototype

public static <K, V> HashMap<K, V> newHashMapWithExpectedSize(int expectedSize)

Source Link

Document

Creates a HashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.

Usage

From source file:net.automatalib.graphs.helpers.SimpleNodeIDs.java

public SimpleNodeIDs(SimpleGraph<N> graph) {
    this.nodes = new ArrayList<>(graph.getNodes());
    int numNodes = this.nodes.size();
    this.nodeIds = Maps.newHashMapWithExpectedSize(numNodes);

    for (int i = 0; i < numNodes; i++) {
        N node = this.nodes.get(i);
        nodeIds.put(node, i);//  w  w w. j  a  v  a  2 s .c om
    }
}

From source file:com.opengamma.engine.target.resolver.AbstractIdentifierResolver.java

public static Map<ExternalIdBundle, UniqueId> resolveExternalIdsSingleThread(final IdentifierResolver resolver,
        final Collection<ExternalIdBundle> identifiers, final VersionCorrection versionCorrection) {
    final Map<ExternalIdBundle, UniqueId> result = Maps.newHashMapWithExpectedSize(identifiers.size());
    for (final ExternalIdBundle identifier : identifiers) {
        final UniqueId uid = resolver.resolveExternalId(identifier, versionCorrection);
        if (uid != null) {
            result.put(identifier, uid);
        }/*from w  w w.j  a v a  2  s.  c  o  m*/
    }
    return result;
}

From source file:org.carrot2.core.ProcessingComponentConfiguration.java

static Map<String, ProcessingComponentConfiguration> indexByComponentId(
        ProcessingComponentConfiguration... configurations) {
    final HashMap<String, ProcessingComponentConfiguration> componentIdToConfiguration = Maps
            .newHashMapWithExpectedSize(configurations.length);
    for (ProcessingComponentConfiguration configuration : configurations) {
        if (componentIdToConfiguration.put(configuration.componentId, configuration) != null) {
            throw new IllegalArgumentException(
                    "Duplicate processing component id: " + configuration.componentId);
        }//w ww  .  j  av a  2s.  co  m
    }
    return Collections.unmodifiableMap(componentIdToConfiguration);
}

From source file:org.sonatype.nexus.orient.entity.FieldCopier.java

@SuppressWarnings("unchecked")
public static Map copy(final Map<?, ?> source) {
    Map target = Maps.newHashMapWithExpectedSize(source.size());
    for (Map.Entry<?, ?> entry : source.entrySet()) {
        Object value = maybeCopy(entry.getValue());
        target.put(entry.getKey(), value);
    }//w  w w. j  a  v  a2s .  c  om
    return target;
}

From source file:com.google.template.soy.basicfunctions.BasicFunctionsRuntime.java

/**
 * Combine the two maps -- for the JavaSource variant while the function signature is still ?
 * instead of map./*from w w  w.j  a  va  2 s .c  o m*/
 */
public static SoyDict augmentMap(SoyValue sv1, SoyValue sv2) {
    SoyDict first = (SoyDict) sv1;
    SoyDict second = (SoyDict) sv2;
    Map<String, SoyValueProvider> map = Maps
            .newHashMapWithExpectedSize(first.getItemCnt() + second.getItemCnt());
    map.putAll(first.asJavaStringMap());
    map.putAll(second.asJavaStringMap());
    return DictImpl.forProviderMap(map, RuntimeMapTypeTracker.Type.LEGACY_OBJECT_MAP_OR_RECORD);
}

From source file:org.apache.mahout.fpm.pfpgrowth.fpgrowth.LeastKCache.java

public LeastKCache(int capacity) {
    this.capacity = capacity;
    cache = Maps.newHashMapWithExpectedSize(capacity);
    queue = new PriorityQueue<K>(capacity + 1, Collections.reverseOrder());
}

From source file:net.automatalib.automata.helpers.SimpleStateIDs.java

public SimpleStateIDs(SimpleAutomaton<S, ?> automaton) {
    this.states = new ArrayList<>(automaton.getStates());
    int numStates = this.states.size();
    this.stateIds = Maps.newHashMapWithExpectedSize(numStates);

    for (int i = 0; i < numStates; i++) {
        S state = this.states.get(i);
        stateIds.put(state, i);/*from  w  w  w .  j av a  2s  .  co m*/
    }
}

From source file:com.ngdata.hbaseindexer.indexer.SolrUpdateCollector.java

/**
 * Instantiate with an expected initial capacity of added and deleted documents.
 *//*from  ww w . j  av  a 2 s  .co m*/
public SolrUpdateCollector(int initialSize) {
    documentsToAdd = Maps.newHashMapWithExpectedSize(initialSize);
    idsToDelete = Lists.newArrayListWithCapacity(initialSize);
    deleteQueries = Lists.newArrayList();
}

From source file:org.apache.phoenix.end2end.ParallelStatsDisabledIT.java

@BeforeClass
public static void doSetup() throws Exception {
    Map<String, String> props = Maps.newHashMapWithExpectedSize(1);
    setUpTestDriver(new ReadOnlyProps(props.entrySet().iterator()));
}

From source file:org.apache.phoenix.end2end.index.MutableIndexFailureWithNamespaceIT.java

@BeforeClass
public static void doSetup() throws Exception {
    Map<String, String> serverProps = getServerProps();
    serverProps.put(QueryServices.IS_NAMESPACE_MAPPING_ENABLED, Boolean.TRUE.toString());
    Map<String, String> clientProps = Maps.newHashMapWithExpectedSize(2);
    clientProps.put(QueryServices.IS_NAMESPACE_MAPPING_ENABLED, Boolean.TRUE.toString());
    clientProps.put(HConstants.HBASE_CLIENT_RETRIES_NUMBER, "2");
    NUM_SLAVES_BASE = 4;//from   w  w  w. j a  v  a 2  s  .  co  m
    setUpTestDriver(new ReadOnlyProps(serverProps.entrySet().iterator()),
            new ReadOnlyProps(clientProps.entrySet().iterator()));
    TableName systemTable = SchemaUtil.getPhysicalTableName(PhoenixDatabaseMetaData.SYSTEM_CATALOG_NAME_BYTES,
            true);
    indexRebuildTaskRegionEnvironment = getUtility().getRSForFirstRegionInTable(systemTable)
            .getRegions(systemTable).get(0).getCoprocessorHost()
            .findCoprocessorEnvironment(MetaDataRegionObserver.class.getName());
    MetaDataRegionObserver
            .initRebuildIndexConnectionProps(indexRebuildTaskRegionEnvironment.getConfiguration());
}