Example usage for java.nio ByteBuffer rewind

Introduction

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

Prototype

public final Buffer rewind()

Source Link

Document

Rewinds this buffer.

Usage

From source file:org.colombbus.tangara.io.ScriptHeaderHelper.java

private static ByteBuffer extractHeaderAsByteBuffer(ByteBuffer content) {
    moveToHeaderEnd(content);//from   w  w  w  . ja  va 2 s .  co m
    int headerLength = content.position();
    content.rewind();
    ByteBuffer byteHeader = ByteBuffer.allocate(headerLength);
    content.get(byteHeader.array());
    return byteHeader;
}

From source file:org.apache.hadoop.hive.serde2.avro.AvroSerdeUtils.java

public static byte[] getBytesFromByteBuffer(ByteBuffer byteBuffer) {
    byteBuffer.rewind();
    byte[] result = new byte[byteBuffer.limit()];
    byteBuffer.get(result);//w  w  w .j av a2s . c o m
    return result;
}

From source file:org.apache.hadoop.hbase.KeyValueTestUtil.java

public static List<KeyValue> rewindThenToList(final ByteBuffer bb, final boolean includesMemstoreTS,
        final boolean useTags) {
    bb.rewind();
    List<KeyValue> kvs = Lists.newArrayList();
    KeyValue kv = null;//from   w  w w.  ja va 2  s.c o m
    while (true) {
        kv = KeyValueUtil.nextShallowCopy(bb, includesMemstoreTS, useTags);
        if (kv == null) {
            break;
        }
        kvs.add(kv);
    }
    return kvs;
}

From source file:Main.java

public static Buffer fillBuffer(float[] array) {
    // Convert to floats because OpenGL doesnt work on doubles, and manually
    // casting each input value would take too much time.
    ByteBuffer bb = ByteBuffer.allocateDirect(4 * array.length); // each
    // float//from  www  .  ja  v a  2 s  .  c  o m
    // takes 4
    // bytes
    bb.order(ByteOrder.LITTLE_ENDIAN);
    for (float d : array)
        bb.putFloat(d);
    bb.rewind();

    return bb;

}

From source file:Main.java

public static Buffer fillBuffer(double[] array) {
    // Convert to floats because OpenGL doesnt work on doubles, and manually
    // casting each input value would take too much time.
    ByteBuffer bb = ByteBuffer.allocateDirect(4 * array.length); // each
    // float//  w w  w .  j  av a 2  s.  c o  m
    // takes 4
    // bytes
    bb.order(ByteOrder.LITTLE_ENDIAN);
    for (double d : array)
        bb.putFloat((float) d);
    bb.rewind();

    return bb;

}

From source file:org.apache.hadoop.hive.serde2.avro.AvroSerdeUtils.java

public static Buffer getBufferFromBytes(byte[] input) {
    ByteBuffer bb = ByteBuffer.wrap(input);
    return bb.rewind();
}

From source file:org.jboss.sepro.util.HashTool.java

public static String hashPasswordDigest(String nonce, String timestamp, String password)
        throws NoSuchAlgorithmException, UnsupportedEncodingException {
    ByteBuffer buf = ByteBuffer.allocate(1000);
    buf.put(Base64.decodeBase64(nonce));
    buf.put(timestamp.getBytes("UTF-8"));
    buf.put(password.getBytes("UTF-8"));
    byte[] toHash = new byte[buf.position()];
    buf.rewind();
    buf.get(toHash);/*  w  w w.  j  ava2  s.c  om*/
    return Base64.encodeBase64String(MessageDigest.getInstance("sha-1").digest(toHash)).trim();
}

From source file:experts.net.ip6.ULUA.java

/**
 * Convert ByteBuffer to Short List//w  ww.j a  va  2s  . c  om
 *
 * @param buf
 *            ByteBuffer
 * @return Short List
 */
private static List<Short> toList(ByteBuffer buf) {
    int cap = buf.capacity() / 2;
    List<Short> tmp = new ArrayList<>(cap);

    buf.rewind();
    for (int i = 0; i < cap; i++) {
        tmp.add(buf.getShort());
    } // for

    return tmp;
}

From source file:info.gehrels.flockDBClient.ByteHelper.java

static ByteBuffer asByteBuffer(long... destinationIds) {
    ByteBuffer buf = null;
    buf = ByteBuffer.wrap(new byte[destinationIds.length * (Long.SIZE / 8)]);
    buf.order(ByteOrder.LITTLE_ENDIAN);
    for (long destinationId : destinationIds) {
        buf.putLong(destinationId);//w  w w  .  jav  a2  s  . c  o  m
    }
    buf.rewind();
    return buf;
}

From source file:com.liveramp.commons.util.BytesUtils.java

public static ByteBuffer byteBufferDeepCopy(ByteBuffer src, ByteBuffer dst) {
    if (dst == null || dst.capacity() < src.remaining()) {
        dst = byteBufferDeepCopy(src);//  ww w.j  a v  a  2 s  .c  o  m
    } else {
        dst.rewind();
        dst.limit(src.remaining());
        dst.put(src.slice());
        dst.flip();
    }
    return dst;
}