Example usage for java.nio ByteBuffer putLong

Introduction

In this page you can find the example usage for java.nio ByteBuffer putLong.

Prototype

public abstract ByteBuffer putLong(long value);

Source Link

Document

Writes the given long to the current position and increases the position by 8.

Usage

From source file:org.apache.cassandra.Util.java

public static ByteBuffer getBytes(long v) {
    byte[] bytes = new byte[8];
    ByteBuffer bb = ByteBuffer.wrap(bytes);
    bb.putLong(v);
    bb.rewind();// w ww.j  a  va 2s. c o  m
    return bb;
}

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From source file:burstcoin.jminer.core.round.Round.java

private static int calcScoopNumber(long blockNumber, byte[] generationSignature) {
    if (blockNumber > 0 && generationSignature != null) {
        ByteBuffer buf = ByteBuffer.allocate(32 + 8);
        buf.put(generationSignature);/*from  w w  w  . java2  s . com*/
        buf.putLong(blockNumber);

        // generate new scoop number
        Shabal256 md = new Shabal256();
        md.update(buf.array());

        BigInteger hashnum = new BigInteger(1, md.digest());
        return hashnum.mod(BigInteger.valueOf(MiningPlot.SCOOPS_PER_PLOT)).intValue();
    }
    return 0;
}

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From source file:org.energy_home.jemma.javagal.layers.data.implementations.Utils.DataManipulation.java

/**
 * Converts a {@code long} to a {@code byte[]}. A long is composed of eight
 * bytes. Writes eight bytes containing the given long value, in the current
 * byte order. Numbering them from 0 (the most important) to 7 (the least
 * important), the resulting array will have all them placed in the same
 * position./*from w  ww . j av  a  2 s.co m*/
 * 
 * @return the converted list.
 * @param x
 *            the long to convert
 * @return the resulting array.
 */
public static byte[] longToBytes(long x) {
    ByteBuffer buffer = ByteBuffer.allocate(8);
    buffer.order(ByteOrder.BIG_ENDIAN);
    buffer.putLong(x);
    return buffer.array();
}

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From source file:org.midonet.cluster.rest_api.models.Route.java

public static UUID idOf(org.midonet.midolman.layer3.Route route) {
    ByteBuffer buffer = ByteBuffer.allocate(50);
    buffer.putInt(route.dstNetworkAddr);
    buffer.putInt(route.srcNetworkAddr);
    buffer.putInt(route.nextHopGateway);
    buffer.putInt(route.weight);//from ww w. j  a v  a 2  s .co m
    buffer.put((byte) (route.dstNetworkLength & 0xFF));
    buffer.put((byte) (route.srcNetworkLength & 0xFF));
    buffer.putLong(route.nextHopPort.getMostSignificantBits());
    buffer.putLong(route.nextHopPort.getLeastSignificantBits());
    buffer.putLong(route.routerId.getMostSignificantBits());
    buffer.putLong(route.routerId.getLeastSignificantBits());
    return UUID.nameUUIDFromBytes(buffer.array());
}

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From source file:org.apache.cassandra.db.index.sasi.disk.TokenTreeTest.java

private static DecoratedKey dk(Long token) {
    ByteBuffer buf = ByteBuffer.allocate(8);
    buf.putLong(token);
    buf.flip();/*from   ww w  .jav  a  2s .com*/
    Long hashed = MurmurHash.hash2_64(buf, buf.position(), buf.remaining(), 0);
    return new DecoratedKey(new LongToken(hashed), buf);
}

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From source file:org.texai.util.ByteUtils.java

/** Returns a 8-byte array built from a long.
 *
 * @param number the long number to convert
 * @return a byte array//from w  ww  . ja v  a 2s. c o  m
 */
public static byte[] toBytes(final long number) {
    final ByteBuffer byteBuffer = ByteBuffer.allocate(8);
    byteBuffer.putLong(number);
    return byteBuffer.array();
}

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From source file:com.github.nlloyd.hornofmongo.util.BSONizer.java

@SuppressWarnings("deprecation")
public static Object convertBSONtoJS(MongoScope mongoScope, Object bsonObject) {
    Object jsObject = null;/*from w  w  w . j ava2 s  .c  o m*/
    if (bsonObject instanceof List<?>) {
        List<?> bsonList = (List<?>) bsonObject;
        Scriptable jsArray = (Scriptable) MongoRuntime.call(new NewInstanceAction(mongoScope, bsonList.size()));

        int index = 0;
        for (Object bsonEntry : bsonList) {
            ScriptableObject.putProperty(jsArray, index, convertBSONtoJS(mongoScope, bsonEntry));
            index++;
        }

        jsObject = jsArray;
    } else if (bsonObject instanceof BSONObject) {
        Scriptable jsObj = (Scriptable) MongoRuntime.call(new NewInstanceAction(mongoScope));
        BSONObject bsonObj = (BSONObject) bsonObject;

        for (String key : bsonObj.keySet()) {
            Object value = convertBSONtoJS(mongoScope, bsonObj.get(key));
            MongoRuntime.call(new JSPopulatePropertyAction(jsObj, key, value));
        }
        jsObject = jsObj;
    } else if (bsonObject instanceof Symbol) {
        jsObject = ((Symbol) bsonObject).getSymbol();
    } else if (bsonObject instanceof Date) {
        jsObject = MongoRuntime.call(
                new NewInstanceAction(mongoScope, "Date", new Object[] { ((Date) bsonObject).getTime() }));
    } else if (bsonObject instanceof Pattern) {
        Pattern regex = (Pattern) bsonObject;
        String source = regex.pattern();
        String options = Bytes.regexFlags(regex.flags());
        jsObject = MongoRuntime
                .call(new NewInstanceAction(mongoScope, "RegExp", new Object[] { source, options }));
    } else if (bsonObject instanceof org.bson.types.ObjectId) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "ObjectId"));
        ((ObjectId) jsObject).setRealObjectId((org.bson.types.ObjectId) bsonObject);
    } else if (bsonObject instanceof org.bson.types.MinKey) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "MinKey"));
    } else if (bsonObject instanceof org.bson.types.MaxKey) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "MaxKey"));
    } else if (bsonObject instanceof com.mongodb.DBRef) {
        com.mongodb.DBRef dbRef = (com.mongodb.DBRef) bsonObject;
        Object id = convertBSONtoJS(mongoScope, dbRef.getId());
        jsObject = MongoRuntime.call(
                new NewInstanceAction(mongoScope, "DBRef", new Object[] { dbRef.getCollectionName(), id }));
    } else if (bsonObject instanceof BSONTimestamp) {
        BSONTimestamp bsonTstamp = (BSONTimestamp) bsonObject;
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "Timestamp",
                new Object[] { bsonTstamp.getTime(), bsonTstamp.getInc() }));
    } else if (bsonObject instanceof Long) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "NumberLong"));
        ((NumberLong) jsObject).setRealLong((Long) bsonObject);
    } else if (bsonObject instanceof Integer) {
        jsObject = Double.valueOf((Integer) bsonObject);
    } else if (bsonObject instanceof Code) {
        jsObject = ((Code) bsonObject).getCode();
    } else if (bsonObject instanceof byte[]) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "BinData"));
        ((BinData) jsObject).setValues(0, (byte[]) bsonObject);
    } else if (bsonObject instanceof Binary) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "BinData"));
        ((BinData) jsObject).setValues(((Binary) bsonObject).getType(), ((Binary) bsonObject).getData());
    } else if (bsonObject instanceof UUID) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "BinData"));
        UUID uuid = (UUID) bsonObject;
        ByteBuffer dataBuffer = ByteBuffer.allocate(16);
        // mongodb wire protocol is little endian
        dataBuffer.order(ByteOrder.LITTLE_ENDIAN);
        dataBuffer.putLong(uuid.getMostSignificantBits());
        dataBuffer.putLong(uuid.getLeastSignificantBits());
        ((BinData) jsObject).setValues(BSON.B_UUID, dataBuffer.array());
    } else {
        jsObject = bsonObject;
    }

    return jsObject;
}

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From source file:org.apache.cassandra.index.sasi.disk.TokenTreeTest.java

private static DecoratedKey dk(Long token) {
    ByteBuffer buf = ByteBuffer.allocate(8);
    buf.putLong(token);
    buf.flip();/*from  w  w  w .  ja v  a 2 s  .  co  m*/
    Long hashed = MurmurHash.hash2_64(buf, buf.position(), buf.remaining(), 0);
    return new BufferDecoratedKey(new Murmur3Partitioner.LongToken(hashed), buf);
}

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From source file:Main.java

private static byte[] encodeUrnUuid(String urn, int position, ByteBuffer bb) {
    String uuidString = urn.substring(position, urn.length());
    UUID uuid;/*  w  ww .j av a  2s.  c om*/
    try {
        uuid = UUID.fromString(uuidString);
    } catch (IllegalArgumentException e) {
        //Log.w(TAG, "encodeUrnUuid invalid urn:uuid format - " + urn);
        return null;
    }
    // UUIDs are ordered as byte array, which means most significant first
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return byteBufferToArray(bb);
}

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From source file:net.servicestack.client.Utils.java

public static byte[] toGuidBytes(UUID theUuid) {
    ByteBuffer first8 = ByteBuffer.allocate(8);
    first8.putLong(theUuid.getMostSignificantBits());
    first8.rewind();// ww w .j  av  a 2  s.  co  m

    byte[] first4 = new byte[4];
    first8.get(first4);
    reverse(first4);

    byte[] second2 = new byte[2];
    first8.get(second2);
    reverse(second2);

    byte[] third2 = new byte[2];
    first8.get(third2);
    reverse(third2);

    ByteBuffer converted16 = ByteBuffer.allocate(16).put(first4).put(second2).put(third2);

    ByteBuffer last8 = ByteBuffer.allocate(8);
    last8.putLong(theUuid.getLeastSignificantBits());
    last8.rewind();

    converted16.put(last8);

    return converted16.array();
}

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