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:com.opengamma.language.convert.MapConverter.java

@Override
public void convertValue(final ValueConversionContext conversionContext, final Object value,
        final JavaTypeInfo<?> type) {
    if ((value == null) && type.isAllowNull()) {
        conversionContext.setResult(null);
        return;//w w w .j  a  v  a 2 s  .  c  om
    }
    if (type.getRawClass() == Map.class) {
        // Converting from Values[][] to Map
        final Value[][] values = (Value[][]) value;
        final JavaTypeInfo<?> keyType = type.getParameterizedType(0);
        final JavaTypeInfo<?> valueType = type.getParameterizedType(1);
        final Map<Object, Object> result = Maps.newHashMapWithExpectedSize(values.length);
        for (Value[] entry : values) {
            if (entry.length != 2) {
                conversionContext.setFail();
                return;
            }
            conversionContext.convertValue(entry[0], keyType);
            if (conversionContext.isFailed()) {
                conversionContext.setFail();
                return;
            }
            final Object key = conversionContext.getResult();
            conversionContext.convertValue(entry[1], valueType);
            if (conversionContext.isFailed()) {
                conversionContext.setFail();
                return;
            }
            result.put(key, conversionContext.getResult());
        }
        conversionContext.setResult(result);
    } else {
        // Converting from Map to Values[][]
        final Map<?, ?> map = (Map<?, ?>) value;
        final Value[][] result = new Value[map.size()][2];
        int i = 0;
        for (Map.Entry<?, ?> entry : map.entrySet()) {
            if (entry.getKey() == null) {
                result[i][0] = new Value();
            } else {
                conversionContext.convertValue(entry.getKey(), VALUE);
                if (conversionContext.isFailed()) {
                    conversionContext.setFail();
                    return;
                }
                result[i][0] = conversionContext.getResult();
            }
            if (entry.getValue() == null) {
                result[i++][1] = new Value();
            } else {
                conversionContext.convertValue(entry.getValue(), VALUE);
                if (conversionContext.isFailed()) {
                    conversionContext.setFail();
                    return;
                }
                result[i++][1] = conversionContext.getResult();
            }
        }
        // Don't be tempted to sort the results; the map instance may already have done that
        conversionContext.setResult(result);
    }
}

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From source file:io.druid.query.topn.TopNLexicographicResultBuilder.java

@Override
public TopNResultBuilder addEntry(String dimName, Object dimValIndex, Object[] metricVals) {
    final Map<String, Object> metricValues = Maps.newHashMapWithExpectedSize(metricVals.length + 1);

    if (shouldAdd(dimName)) {
        metricValues.put(dimSpec.getOutputName(), dimName);
        final int extra = metricVals.length % LOOP_UNROLL_COUNT;
        switch (extra) {
        case 7://w  w  w  . j  a va2s. c  om
            metricValues.put(aggFactoryNames[6], metricVals[6]);
        case 6:
            metricValues.put(aggFactoryNames[5], metricVals[5]);
        case 5:
            metricValues.put(aggFactoryNames[4], metricVals[4]);
        case 4:
            metricValues.put(aggFactoryNames[3], metricVals[3]);
        case 3:
            metricValues.put(aggFactoryNames[2], metricVals[2]);
        case 2:
            metricValues.put(aggFactoryNames[1], metricVals[1]);
        case 1:
            metricValues.put(aggFactoryNames[0], metricVals[0]);
        }
        for (int i = extra; i < metricVals.length; i += LOOP_UNROLL_COUNT) {
            metricValues.put(aggFactoryNames[i + 0], metricVals[i + 0]);
            metricValues.put(aggFactoryNames[i + 1], metricVals[i + 1]);
            metricValues.put(aggFactoryNames[i + 2], metricVals[i + 2]);
            metricValues.put(aggFactoryNames[i + 3], metricVals[i + 3]);
            metricValues.put(aggFactoryNames[i + 4], metricVals[i + 4]);
            metricValues.put(aggFactoryNames[i + 5], metricVals[i + 5]);
            metricValues.put(aggFactoryNames[i + 6], metricVals[i + 6]);
            metricValues.put(aggFactoryNames[i + 7], metricVals[i + 7]);
        }

        pQueue.add(new DimValHolder.Builder().withDimName(dimName).withMetricValues(metricValues).build());
        if (pQueue.size() > threshold) {
            pQueue.poll();
        }
    }

    return this;
}

---

From source file:org.dishevelled.venn.layout.VennLayoutImpl.java

/**
 * Create a new venn layout with the specified list of shapes and bounding rectangle.
 *
 * @param shapes list of shapes, must not be null
 * @param boundingRectangle bounding rectangle, must not be null
 *///from  w ww  .ja  v a2 s  .c  o m
public VennLayoutImpl(final List<? extends Shape> shapes, final Rectangle2D boundingRectangle) {
    if (shapes == null) {
        throw new IllegalArgumentException("shapes must not be null");
    }
    if (boundingRectangle == null) {
        throw new IllegalArgumentException("boundingRectangle must not be null");
    }
    this.shapes = ImmutableList.copyOf(shapes);
    this.boundingRectangle = boundingRectangle;

    luneCenters = Maps.newHashMapWithExpectedSize((int) Math.pow(2, this.shapes.size()) - 1);
}

---

From source file:org.auraframework.impl.adapter.BrowserValueProvider.java

protected Map<String, Object> parse() {
    AuraContext context = Aura.getContextService().getCurrentContext();
    Map<String, Object> m = Maps.newHashMapWithExpectedSize(32);
    String ua = context != null ? context.getClient().getUserAgent() : null;
    BrowserInfo b = new BrowserInfo(ua);
    m.put(IS_TABLET, b.isTablet());//from w  w  w.  ja  v  a  2s  .com
    m.put(IS_PHONE, b.isPhone());
    m.put(IS_ANDROID, b.isAndroid());
    m.put(FORM_FACTOR, b.getFormFactor());
    m.put(IS_IPHONE, b.isIPhone());
    m.put(IS_IPAD, b.isIPad());
    m.put(IS_IOS, b.isIOS());
    m.put(IS_IE6, b.isIE6());
    m.put(IS_IE7, b.isIE7());
    m.put(IS_IE8, b.isIE8());
    m.put(IS_IE9, b.isIE9());
    m.put(IS_IE10, b.isIE10());
    m.put(IS_IE11, b.isIE11());
    m.put(IS_WEBKIT, b.isWebkit());
    m.put(IS_FIREFOX, b.isFirefox());
    m.put(IS_WINDOWS_PHONE, b.isWindowsPhone());
    m.put(IS_WINDOWS_TABLET, b.isWindowsTablet());

    return m;
}

---

From source file:com.mengge.internal.MobileElementToJsonConverter.java

/**
 * Converts {@link RemoteWebElement} objects, which may be
 * {@link WrapsElement wrapped}, into their JSON representation as defined by
 * the WebDriver wire protocol.//  w  ww .  j  a v a2 s. c  o  m
 *
 * @param arg is the argument
 * @return the result
 */
public Object apply(Object arg) {
    if (arg == null || arg instanceof String || arg instanceof Boolean || arg instanceof Number) {
        return arg;
    }

    while (arg instanceof WrapsElement) {
        arg = ((WrapsElement) arg).getWrappedElement();
    }

    if (arg instanceof MobileElement) {
        return ImmutableMap.of("ELEMENT", ((MobileElement) arg).getId());
    }

    if (arg.getClass().isArray()) {
        arg = Lists.newArrayList((Object[]) arg);
    }

    if (arg instanceof Collection<?>) {
        Collection<?> args = (Collection<?>) arg;
        return Collections2.transform(args, this);
    }

    if (arg instanceof Map<?, ?>) {
        Map<?, ?> args = (Map<?, ?>) arg;
        Map<String, Object> converted = Maps.newHashMapWithExpectedSize(args.size());
        for (Map.Entry<?, ?> entry : args.entrySet()) {
            Object key = entry.getKey();
            if (!(key instanceof String)) {
                throw new IllegalArgumentException(
                        "All keys in Map script arguments must be strings: " + key.getClass().getName());
            }
            converted.put((String) key, apply(entry.getValue()));
        }
        return converted;
    }

    throw new IllegalArgumentException("Argument is of an illegal type: " + arg.getClass().getName());
}

---

From source file:org.opendaylight.controller.config.facade.xml.rpc.RuntimeRpcElementResolved.java

public ObjectName getObjectName(ModuleRpcs rpcMapping) {
    Map<String, String> additionalAttributesJavaNames = Maps
            .newHashMapWithExpectedSize(additionalAttributes.size());
    for (String attributeYangName : additionalAttributes.keySet()) {
        String attributeJavaName = rpcMapping.getRbeJavaName(attributeYangName);
        Preconditions.checkState(attributeJavaName != null,
                "Cannot find java name for runtime bean wtih yang name %s", attributeYangName);
        additionalAttributesJavaNames.put(attributeJavaName, additionalAttributes.get(attributeYangName));
    }/*from  w  w w .j  av  a 2s  .  c om*/
    return ObjectNameUtil.createRuntimeBeanName(moduleName, instanceName, additionalAttributesJavaNames);
}

---

From source file:com.newisys.apps.pktviz.model.xform.AdjSeqTimeTransform.java

public void reset(Iterator<PacketInfo> packetIterator) {
    final SortedMap<Long, AnalysisTickInfo> analysisMap = Maps.newTreeMap();
    while (packetIterator.hasNext()) {
        final PacketInfo packet = packetIterator.next();
        final long fromTime = packet.getFromTimeActual();
        final AnalysisTickInfo fromInfo = getAnalysisTickInfo(analysisMap, fromTime);
        final int fromAlloc = mapIncrement(fromInfo.nodeAllocMap, packet.getFromNode(), 1);
        ++fromInfo.fromPackets;/*from   w  w  w. ja  va 2  s  . co  m*/

        final long toTime = packet.getToTimeActual();
        final AnalysisTickInfo toInfo = getAnalysisTickInfo(analysisMap, toTime);
        mapIncrement(toInfo.nodeAllocMap, packet.getToNode(), fromTime == toTime ? fromAlloc : 1);
        ++toInfo.toPackets;
    }

    tickInfoMap = Maps.newHashMapWithExpectedSize(analysisMap.size());
    int spanCount = 0;
    long seqTime = 0;
    for (final Map.Entry<Long, AnalysisTickInfo> entry : analysisMap.entrySet()) {
        final Long realTime = entry.getKey();
        final AnalysisTickInfo info = entry.getValue();
        tickInfoMap.put(realTime, new FinalTickInfo(seqTime, info.nodeAllocMap.size()));
        spanCount += info.fromPackets - info.toPackets;
        seqTime += mapMax(info.nodeAllocMap, 1) + 1;
    }
}

---

From source file:com.palantir.atlasdb.keyvalue.jdbc.impl.MultiTimestampPutBatch.java

@Override
@Nullable//from www.  j  a  v  a  2 s  .c om
public PutBatch getNextBatch(Result<? extends Record> existingRecords) {
    Map<CellTimestamp, byte[]> existing = Maps.newHashMapWithExpectedSize(existingRecords.size());
    for (Record record : existingRecords) {
        existing.put(
                new CellTimestamp(record.getValue(JdbcConstants.A_ROW_NAME),
                        record.getValue(JdbcConstants.A_COL_NAME), record.getValue(JdbcConstants.A_TIMESTAMP)),
                record.getValue(JdbcConstants.A_VALUE));
    }
    Multimap<Cell, Value> nextBatch = ArrayListMultimap.create();
    for (Entry<Cell, Value> entry : data.entries()) {
        Cell cell = entry.getKey();
        Value newValue = entry.getValue();
        byte[] oldValue = existing
                .get(new CellTimestamp(cell.getRowName(), cell.getColumnName(), newValue.getTimestamp()));
        if (oldValue == null) {
            nextBatch.put(cell, newValue);
        } else if (!Arrays.equals(oldValue, newValue.getContents())) {
            return null;
        }
    }
    return new MultiTimestampPutBatch(nextBatch);
}

---

From source file:net.derquinse.bocas.BucketGuavaCachingBocas.java

Map<BucketKey, MemoryByteSource> toInternalEntryMap(Map<ByteString, MemoryByteSource> entries) {
    final Map<BucketKey, MemoryByteSource> map = Maps.newHashMapWithExpectedSize(entries.size());
    for (Entry<ByteString, MemoryByteSource> entry : entries.entrySet()) {
        map.put(new BucketKey(this, entry.getKey()), entry.getValue());
    }//from  w  ww  .j a v a 2  s  .co m
    return map;
}

---

From source file:org.opendaylight.mdsal.binding.dom.adapter.BindingDOMDataTreeListenerAdapter.java

private Map<DataTreeIdentifier<?>, DataObject> toBinding(
        final Map<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domSubtrees) {
    // FIXME: Introduce lazy translating map
    final Map<DataTreeIdentifier<?>, DataObject> ret = Maps.newHashMapWithExpectedSize(domSubtrees.size());
    for (final Entry<DOMDataTreeIdentifier, NormalizedNode<?, ?>> domEntry : domSubtrees.entrySet()) {
        final Entry<InstanceIdentifier<?>, DataObject> bindingEntry = codec
                .fromNormalizedNode(domEntry.getKey().getRootIdentifier(), domEntry.getValue());
        ret.put(DataTreeIdentifier.create(store, bindingEntry.getKey()), bindingEntry.getValue());
    }//from w w  w.ja va  2s.  c o  m
    return ret;
}

---

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