Example usage for java.util UUID UUID

Introduction

In this page you can find the example usage for java.util UUID UUID.

Prototype

public UUID(long mostSigBits, long leastSigBits) 

Source Link

Document

Constructs a new UUID using the specified data.

Usage

From source file:org.voltdb.hadoop.Digester.java

/**
 * Generate a {@code UUID} representation of the MD5 digest for the given content. This is possible because MD5
 * digests and UUIDs are both 128 bit long
 *
 * @param aContent//from w  ww . ja  v a 2 s . c  om
 *            a content {@code String}
 * @return a {@code UUID} representation of the computed MD5 digest
 * @throws DigesterException
 *             upon failed cryptographic operation
 */
public final static UUID digestMD5asUUID(String aContent) throws DigestException {
    if (aContent == null)
        return null;

    BigInteger bi = digestMD5asBigInteger(aContent);
    return new UUID(bi.shiftRight(64).longValue(), bi.and(LSB_MASK).longValue());
}

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From source file:com.github.seqware.queryengine.util.SGID.java

/**
 * Back-end constructor, create a fully functional SGID
 *
 * @param mostSig a long.//from  w  ww . ja va  2s .  co  m
 * @param leastSig a long.
 * @param timestamp a long.
 * @param friendlyRowKey a {@link java.lang.String} object.
 */
public SGID(long mostSig, long leastSig, long timestamp, String friendlyRowKey) {
    uuid = new UUID(mostSig, leastSig);
    backendTimestamp = new Date(timestamp);
    this.friendlyRowKey = friendlyRowKey;
}

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From source file:info.archinnov.achilles.it.TestEntityWithCompositePartitionKey.java

@Test
public void should_find() throws Exception {
    //Given// ww w .  j  a  v a2 s .c  o m
    final long id = RandomUtils.nextLong(0L, Long.MAX_VALUE);
    final UUID uuid = new UUID(1L, 1L);
    scriptExecutor.executeScriptTemplate("EntityWithCompositePartitionKey/insert_single_row.cql",
            ImmutableMap.of("id", id, "uuid", uuid, "value", "val"));

    //When
    final EntityWithCompositePartitionKey actual = manager.crud().findById(id, uuid).get();

    //Then

    assertThat(actual.getValue()).isEqualTo("val");
}

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From source file:com.vmware.photon.controller.rootscheduler.simulator.CloudStoreLoader.java

/**
 * Creates host documents in cloudstore.
 *
 * @param cloudstore CloudStore test environment to create documents in.
 * @param numHosts The number of host documents to create.
 * @param hostConfigurations A map from {@link HostConfiguration} to the probability that this
 *                           host configuration is used in the deployment. The sum of all the
 *                           values of this map must be 1.
 * @param numDatastores The number of datastores.
 * @param numDatastoresDistribution Distribution for number of datastores on each host. This
 *                                  distribution is expected to generate samples in the range
 *                                  [0, numDatastores].
 * @throws Throwable//from  w  ww . j a  va  2s.  c o  m
 */
public static void loadHosts(TestEnvironment cloudstore, int numHosts,
        Map<HostConfiguration, Double> hostConfigurations, int numDatastores,
        IntegerDistribution numDatastoresDistribution) throws Throwable {
    int[] indices = new int[hostConfigurations.size()];
    HostConfiguration[] configs = new HostConfiguration[hostConfigurations.size()];
    double[] probabilities = new double[hostConfigurations.size()];
    int i = 0;
    for (Map.Entry<HostConfiguration, Double> entry : hostConfigurations.entrySet()) {
        indices[i] = i;
        configs[i] = entry.getKey();
        probabilities[i] = entry.getValue();
        i++;
    }
    EnumeratedIntegerDistribution configDistribution = new EnumeratedIntegerDistribution(indices,
            probabilities);
    for (i = 0; i < numHosts; i++) {
        HostService.State host = new HostService.State();
        host.hostAddress = "host" + i;
        host.state = HostState.READY;
        host.userName = "username";
        host.password = "password";
        host.reportedDatastores = new HashSet<>();
        int numDatastoresPerHost = numDatastoresDistribution.sample();
        assertThat(numDatastoresPerHost >= 0, is(true));
        assertThat(numDatastoresPerHost <= numDatastores, is(true));
        while (host.reportedDatastores.size() < numDatastoresPerHost) {
            int randomInt = random.nextInt(numDatastores);
            host.reportedDatastores.add(new UUID(0, randomInt).toString());
        }
        host.reportedNetworks = new HashSet<>();
        host.usageTags = new HashSet<>(Arrays.asList(UsageTag.CLOUD.name()));
        int configIndex = configDistribution.sample();
        host.cpuCount = configs[configIndex].numCpus;
        host.memoryMb = configs[configIndex].memoryMb;
        host.documentSelfLink = new UUID(0, i).toString();
        // TODO(mmutsuzaki) Support availability zones.
        Operation result = cloudstore.sendPostAndWait(HostServiceFactory.SELF_LINK, host);
        assertThat(result.getStatusCode(), is(200));
        logger.debug("Created a host document: {}", Utils.toJson(true, false, host));
    }
}

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From source file:org.lilyproject.repository.impl.DFSBlobStoreAccess.java

private UUID decode(byte[] blobKey) {
    return new UUID(Bytes.toLong(blobKey), Bytes.toLong(blobKey, Bytes.SIZEOF_LONG));
}

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From source file:com.nesscomputing.jackson.datatype.TestCustomUuidModule.java

@Test
public void testCustomUUIDSerialization() throws Exception {
    final AtomicBoolean called = new AtomicBoolean(false);
    ObjectMapper mapper = getObjectMapper(new AbstractModule() {
        @Override//from  ww w  .  j  av  a 2 s  . co  m
        protected void configure() {
            bind(new TypeLiteral<JsonSerializer<UUID>>() {
            }).toInstance(new CustomUuidSerializer() {
                @Override
                public void serialize(UUID value, JsonGenerator jgen, SerializerProvider provider)
                        throws IOException, JsonGenerationException {
                    called.set(true);
                    super.serialize(value, jgen, provider);
                }
            });
        }
    });
    final UUID id = new UUID(9, 9);
    Assert.assertEquals('"' + id.toString() + '"', mapper.writeValueAsString(id));
    Assert.assertTrue(called.get());
}

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From source file:org.springframework.integration.MessageHeaders.java

public MessageHeaders(Map<String, Object> headers) {
    this.headers = (headers != null) ? new HashMap<String, Object>(headers) : new HashMap<String, Object>();
    if (MessageHeaders.idGenerator == null) {
        UUID uuid = new UUID(UUIDGen.newTime(), UUIDGen.getClockSeqAndNode());
        this.headers.put(ID, uuid);
    } else {/*from   www . ja  v  a2  s . com*/
        this.headers.put(ID, MessageHeaders.idGenerator.generateId());
    }

    this.headers.put(TIMESTAMP, new Long(System.currentTimeMillis()));
}

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From source file:com.intellectualcrafters.plot.uuid.UUIDFetcher.java

@SuppressWarnings("unused")
public static UUID fromBytes(final byte[] array) {
    if (array.length != 16) {
        throw new IllegalArgumentException("Illegal byte array length: " + array.length);
    }/*  w  w  w. j  a  va2  s.co m*/
    final ByteBuffer byteBuffer = ByteBuffer.wrap(array);
    final long mostSignificant = byteBuffer.getLong();
    final long leastSignificant = byteBuffer.getLong();
    return new UUID(mostSignificant, leastSignificant);
}

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From source file:com.simpsonwil.strongquests.util.UUIDFetcher.java

public static UUID fromBytes(byte[] array) {
    if (array.length != 16)
        throw new IllegalArgumentException("Illegal byte array length: " + array.length);

    ByteBuffer byteBuffer = ByteBuffer.wrap(array);
    long mostSignificant = byteBuffer.getLong();
    long leastSignificant = byteBuffer.getLong();

    return new UUID(mostSignificant, leastSignificant);
}

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From source file:com.cnaude.mutemanager.UUIDFetcher.java

public static UUID fromBytes(byte[] array) {
    if (array.length != 16) {
        throw new IllegalArgumentException("Illegal byte array length: " + array.length);
    }//from  www.j a v  a 2s. c o m
    ByteBuffer byteBuffer = ByteBuffer.wrap(array);
    long mostSignificant = byteBuffer.getLong();
    long leastSignificant = byteBuffer.getLong();
    return new UUID(mostSignificant, leastSignificant);
}

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