Example usage for com.google.common.hash Hashing murmur3

Introduction

In this page you can find the example usage for com.google.common.hash Hashing murmur3_128.

Prototype

public static HashFunction murmur3_128()

Source Link

Document

Returns a hash function implementing the <a href="http://smhasher.googlecode.com/svn/trunk/MurmurHash3.cpp"> 128-bit murmur3 algorithm, x64 variant</a> (little-endian variant), using a seed value of zero.

Usage

From source file:org.metastatic.rsync.Murmur3Adapter.java

public Murmur3Adapter() {
    hashFunction = Hashing.murmur3_128();
    hasher = hashFunction.newHasher();
}

From source file:it.unibo.alchemist.model.implementations.molecules.SimpleMolecule.java

private void initHash() {
    if (hash == null) {
        final HashCode hashCode = Hashing.murmur3_128().hashString(n, StandardCharsets.UTF_8);
        hash32 = hashCode.asInt();/*from  ww  w  .j  a v a 2 s  .  co m*/
        hash64 = hashCode.asLong();
        hash = hashCode.asBytes();
    }
}

From source file:org.fenixedu.cms.domain.CMSThemeFiles.java

private String computeChecksum() {
    StringBuilder builder = new StringBuilder();
    this.files.values().forEach(file -> {
        builder.append(Hashing.sha256().hashBytes(file.getContent()).toString());
    });/*w  w  w  . j a  va  2s  . c  o  m*/
    return Hashing.murmur3_128().hashString(builder, StandardCharsets.UTF_8).toString().substring(0, 16);
}

From source file:io.druid.embedded.jackson.MissingAggregatorsModule.java

public MissingAggregatorsModule() {
    super("AggregatorFactories");

    if (ComplexMetrics.getSerdeForType("hyperUnique") == null) {
        ComplexMetrics.registerSerde("hyperUnique", new HyperUniquesSerde(Hashing.murmur3_128()));
    }/*from  w  w w  .j  a  va  2  s .  c  o m*/

    setMixInAnnotation(AggregatorFactory.class, AggregatorFactoryMixin.class);
    setMixInAnnotation(PostAggregator.class, PostAggregatorMixin.class);
}

From source file:com.github.benmanes.caffeine.cache.simulator.parser.wikipedia.WikipediaTraceReader.java

@Override
public LongStream events() throws IOException {
    return lines().map(this::parseRequest).filter(Objects::nonNull)
            .mapToLong(path -> Hashing.murmur3_128().hashString(path, StandardCharsets.UTF_8).asLong());
}

From source file:com.github.fhuss.storm.cassandra.Murmur3StreamGrouping.java

/**
 * Computes the murmur3 hash for the specified values.
 * http://stackoverflow.com/questions/27212797/cassandra-hashing-algorithm-with-composite-keys
 * https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/marshal/CompositeType.java
 *
 * @param values the fields which are part of the (compose) partition key.
 * @return the computed hash for input values.
 * @throws IOException/*from   w ww  . j  a  v  a 2s.  co  m*/
 */
@VisibleForTesting
public static long hashes(List<Object> values) throws IOException {
    byte[] keyBytes;
    try (ByteArrayOutputStream bos = new ByteArrayOutputStream();
            DataOutputStream out = new DataOutputStream(bos)) {
        for (Object key : values) {
            byte[] arr = ((String) key).getBytes("UTF-8");
            out.writeShort(arr.length);
            out.write(arr, 0, arr.length);
            out.writeByte(0);
        }
        out.flush();
        keyBytes = bos.toByteArray();
    }
    return Hashing.murmur3_128().hashBytes(keyBytes).asLong();
}

From source file:org.apache.kylin.measure.hllc.HLLCounter.java

public HLLCounter(int p, RegisterType type) {
    this(p, type, Hashing.murmur3_128());
}

From source file:com.palantir.atlasdb.table.description.render.Renderer.java

protected byte[] getHash() {
    return Hashing.murmur3_128().hashUnencodedChars(s).asBytes();
}

From source file:org.apache.beam.sdk.io.common.HashingFn.java

@Override
public Accum addInput(Accum accum, String input) {
    List<HashCode> elementHashes = Lists.newArrayList();
    if (accum.hashCode != null) {
        elementHashes.add(accum.hashCode);
    }//from   w w w .ja va 2 s.c o m
    HashCode inputHashCode = Hashing.murmur3_128().hashString(input, StandardCharsets.UTF_8);
    elementHashes.add(inputHashCode);
    accum.hashCode = Hashing.combineUnordered(elementHashes);
    return accum;
}

From source file:benchmarks.Benchmark128BitHash.java

@Benchmark
public void guava_murmur3_128(Blackhole bh, BenchmarkData bd, ByteCounter bc) {
    byte[] bytes = bd.getBytes();
    bc.add(bytes.length);//from  w ww . j  ava 2s. co  m
    bh.consume(Hashing.murmur3_128().hashBytes(bytes).asBytes());
}

Example usage for com.google.common.hash Hashing murmur3_128

Introduction

Prototype

Document

Usage