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:org.onos.yangtools.yang.data.api.schema.tree.spi.LazyContainerNode.java

private static <K, V> Map<K, V> allocateMap(final int hint) {
    switch (hint) {
    case 0:/* www  .  j av a2s  .co  m*/
    case 1:
        // Zero does not matter, but will be kept small if it is touched in the future
        return new HashMap<>(1);
    case 2:
        // Two entries, may end up being grown to 4
        return new HashMap<>(2);
    case 3:
        // 4 * 0.75 = 3
        return new HashMap<>(4);
    case 4:
    case 5:
    case 6:
        // 8 * 0.75 = 6
        return new HashMap<>(8);
    default:
        // No savings, defer to Guava
        return Maps.newHashMapWithExpectedSize(hint);
    }
}

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

@BeforeClass
public static void doSetup() throws Exception {
    Map<String, String> serverProps = Maps.newHashMapWithExpectedSize(7);
    serverProps.put(QueryServices.IS_NAMESPACE_MAPPING_ENABLED, "true");
    Map<String, String> clientProps = Maps.newHashMapWithExpectedSize(1);
    clientProps.put(QueryServices.IS_NAMESPACE_MAPPING_ENABLED, "true");
    setUpTestDriver(new ReadOnlyProps(serverProps.entrySet().iterator()),
            new ReadOnlyProps(clientProps.entrySet().iterator()));
}

From source file:com.opengamma.engine.marketdata.AbstractMarketDataSnapshot.java

/**
 * Implementation based on the {@link #query(ValueSpecification)} method. {@inheritDoc}
 *//*from  w  ww . ja va  2  s . c  o m*/
@Override
public Map<ValueSpecification, Object> query(final Set<ValueSpecification> specifications) {
    final Map<ValueSpecification, Object> results = Maps.newHashMapWithExpectedSize(specifications.size());
    for (final ValueSpecification specification : specifications) {
        final Object value = query(specification);
        if (value != null) {
            results.put(specification, value);
        }
    }
    return results;
}

From source file:org.eclipse.xtend.core.scoping.CachingTypeScope.java

public CachingTypeScope(AbstractScope parent) {
    this.parent = parent;
    this.cache = Maps.newHashMapWithExpectedSize(50);
}

From source file:org.graylog2.restclient.models.ConfigurableEntity.java

public Map<String, Object> getConfiguration(List<RequestedConfigurationField> configurationFields) {
    final Map<String, Object> result = Maps.newHashMapWithExpectedSize(getConfiguration().size());

    for (final RequestedConfigurationField configurationField : configurationFields) {
        if (getConfiguration().get(configurationField.getTitle()) != null) {
            if (configurationField.getAttributes().contains("is_password")) {
                result.put(configurationField.getTitle(), "*******");
            } else {
                result.put(configurationField.getTitle(),
                        getConfiguration().get(configurationField.getTitle()));
            }/*from  ww w. j av a2 s .  co  m*/
        }
    }
    return result;
}

From source file:org.apache.phoenix.pig.BasePigIT.java

@BeforeClass
@Shadower(classBeingShadowed = BaseHBaseManagedTimeIT.class)
public static void doSetup() throws Exception {
    Map<String, String> props = Maps.newHashMapWithExpectedSize(3);
    props.put(QueryServices.EXTRA_JDBC_ARGUMENTS_ATTRIB, QueryServicesOptions.DEFAULT_EXTRA_JDBC_ARGUMENTS);
    // Must update config before starting server
    setUpTestDriver(new ReadOnlyProps(props.entrySet().iterator()));
}

From source file:org.eclipse.che.infrastructure.docker.client.json.Filters.java

public Map<String, List<String>> getFilters() {
    final HashMap<String, List<String>> filtersCopy = Maps.newHashMapWithExpectedSize(filters.size());
    filters.forEach((s, strings) -> filtersCopy.put(s, Collections.unmodifiableList(strings)));

    return Collections.unmodifiableMap(filtersCopy);
}

From source file:org.graylog2.utilities.LenientExplicitOrdering.java

public LenientExplicitOrdering(List<T> order) {
    this.idxMap = Maps.newHashMapWithExpectedSize(order.size());
    int idx = 0;/*w  w w  . jav  a 2 s . c  o m*/
    for (T s : order) {
        idxMap.put(s, idx);
        idx++;
    }
}

From source file:com.google.template.soy.data.internal.BasicParamStore.java

public BasicParamStore(int size) {
    this.localStore = Maps.newHashMapWithExpectedSize(size);
}

From source file:org.lunifera.dsl.xtext.lazyresolver.scoping.CachingTypeScope.java

public CachingTypeScope(String cacheId, IScope parent) {
    super(parent, false);
    this.cacheId = cacheId;
    this.cache = Maps.newHashMapWithExpectedSize(50);
}