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

Introduction

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

Prototype

public static <K, V> HashMap<K, V> newHashMap(Map<? extends K, ? extends V> map) 

Source Link

Document

Creates a mutable HashMap instance with the same mappings as the specified map.

Usage

From source file:com.palantir.atlasdb.transaction.impl.Transactions.java

/**
 * For tables that provide write-write conflict detection, touch is a useful tool.
 * Touch will ensure that the value you read from a table wasn't modified by any concurrent
 * transactions.//from   ww  w .jav  a 2  s . com
 * <p>
 * If a cell is deleted, it also ensures that no concurrent transactions have written a value
 * to that cell.
 * <p>
 * Note: If two concurrent transactions both touch the same cell, only one of them will
 * complete successfully and the other will retry.  This means touch allows a read to have
 * "serializable" semantics, but it is at the cost of a write.  If we find that we rely heavily
 * on touch and it causes a lot of contention, we should consider implementing serializable
 * isolation.
 */
public static void touchCells(Transaction t, String tableName, Set<Cell> cells) {
    Map<Cell, byte[]> results = Maps.newHashMap(t.get(tableName, cells));
    for (Cell cell : cells) {
        if (!results.containsKey(cell)) {
            results.put(cell, PtBytes.EMPTY_BYTE_ARRAY);
        }
    }
    t.put(tableName, results);
}

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From source file:com.cloudera.exhibit.core.composite.UpdatableExhibitDescriptor.java

public UpdatableExhibitDescriptor(ExhibitDescriptor base) {
    super(base.attributes(), Maps.newHashMap(base.frames()));
}

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From source file:org.elasticsearch.test.cache.recycler.MockPageCacheRecycler.java

public static void ensureAllPagesAreReleased() throws Exception {
    final Map<Object, Throwable> masterCopy = Maps.newHashMap(ACQUIRED_PAGES);
    if (!masterCopy.isEmpty()) {
        // not empty, we might be executing on a shared cluster that keeps on obtaining
        // and releasing pages, lets make sure that after a reasonable timeout, all master
        // copy (snapshot) have been released
        boolean success = ElasticsearchTestCase.awaitBusy(new Predicate<Object>() {
            @Override/*www .ja va  2  s.co m*/
            public boolean apply(Object input) {
                return Sets.intersection(masterCopy.keySet(), ACQUIRED_PAGES.keySet()).isEmpty();
            }
        });
        if (!success) {
            masterCopy.keySet().retainAll(ACQUIRED_PAGES.keySet());
            ACQUIRED_PAGES.keySet().removeAll(masterCopy.keySet()); // remove all existing master copy we will report on
            if (!masterCopy.isEmpty()) {
                final Throwable t = masterCopy.entrySet().iterator().next().getValue();
                throw new RuntimeException(masterCopy.size() + " pages have not been released", t);
            }
        }
    }
}

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From source file:org.terasology.rendering.nui.skin.UISkinData.java

public UISkinData(Map<String, UIStyleFamily> families) {
    skinFamilies = Maps.newHashMap(families);
}

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From source file:org.apache.shindig.gadgets.http.HttpResponseMetadataHelper.java

/**
 * Return a copy of input response with additional metadata values.
 * @param response source response/*  w  w  w.j  a v  a2s  . c  o m*/
 * @param values added metadata values
 * @return copy of source response with updated metadata
 */
public static HttpResponse updateMetadata(HttpResponse response, Map<String, String> values) {
    Map<String, String> metadata = Maps.newHashMap(response.getMetadata());
    // metadata.putAll(values);
    for (Map.Entry<String, String> val : values.entrySet()) {
        metadata.put(val.getKey(), val.getValue());
    }
    return new HttpResponseBuilder(response).setMetadata(metadata).create();
}

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From source file:org.carrot2.util.simplexml.SessionInitStrategy.java

public SessionInitStrategy(Strategy delegate, Map<Object, Object> sessionValues) {
    this.delegate = delegate;
    this.sessionValues = Maps.newHashMap(sessionValues);
}

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From source file:net.sourceforge.docfetcher.model.index.file.MapValueDiff.java

protected final void doRun() {
    Map<K, V> rightCopy = Maps.newHashMap(right);
    for (Map.Entry<K, V> leftEntry : left.entrySet()) {
        if (isStopped())
            return;
        K leftKey = leftEntry.getKey();//from  w w w.  ja va  2s  .  c o  m
        V leftValue = leftEntry.getValue();
        V rightValue = rightCopy.remove(leftKey);
        if (rightValue != null)
            handleBoth(leftValue, rightValue);
        else
            handleOnlyLeft(leftValue);
    }
    for (V rightValue : rightCopy.values()) {
        if (isStopped())
            return;
        handleOnlyRight(rightValue);
    }
}

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