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.ScriptReader.java

/**
  * Try to decode a byte buffer with a charset
  *// w ww  .  j  a v  a 2 s. c o  m
  * @param content
  *            the bute buffer
  * @param cs
  *            the charset
  * @return <code>null</code> if the charset is not supported, or the decoded
  *         string
  */
 private static String tryDecodeBufferWithCharset(ByteBuffer content, Charset cs) {
     CharBuffer buffer = CharBuffer.allocate(content.capacity() * 2);
     CharsetDecoder decoder = createDecoder(cs);
     content.rewind();
     CoderResult coderRes = decoder.decode(content, buffer, true);
     if (coderRes.isError() == false) {
         buffer.rewind();
         return buffer.toString().trim();
     }
     return null;
 }

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

public static ByteBuffer toByteBufferAndRewind(final Iterable<? extends KeyValue> kvs,
        boolean includeMemstoreTS) {
    int totalBytes = KeyValueUtil.totalLengthWithMvccVersion(kvs, includeMemstoreTS);
    ByteBuffer bb = ByteBuffer.allocate(totalBytes);
    for (KeyValue kv : IterableUtils.emptyIfNull(kvs)) {
        KeyValueUtil.appendToByteBuffer(bb, kv, includeMemstoreTS);
    }/*w ww .  j  a  v a2  s .c o m*/
    bb.rewind();
    return bb;
}

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

static ByteBuffer asByteBufferOrNull(long... destinationIds) {
    ByteBuffer buf = null;
    if (isNotEmpty(destinationIds)) {
        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  . j a va  2  s  .c  o m*/
        }
        buf.rewind();
    }
    return buf;
}

From source file:Main.java

public static ByteBuffer clone(final ByteBuffer buf) {
    if (buf == null) {
        return null;
    }//from  w w w  .j a va2  s.  c o m
    buf.rewind();

    final ByteBuffer copy;
    if (buf.isDirect()) {
        copy = createByteBuffer(buf.limit());
    } else {
        copy = createByteBufferOnHeap(buf.limit());
    }
    copy.put(buf);

    return copy;
}

From source file:com.icloud.framework.core.util.FBUtilities.java

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

From source file:org.lic.ip.iplocator.IPv4RadixIntTree.java

private static long inet_aton(String ipStr) {
    try {//  w ww  .  j  a  v  a  2 s . c o  m
        ByteBuffer bb = ByteBuffer.allocate(8);
        bb.putInt(0);
        bb.put(InetAddress.getByName(ipStr).getAddress());
        bb.rewind();
        return bb.getLong();
    } catch (UnknownHostException e) {
        logger.error(e.getMessage(), e);
    }
    return 0;
}

From source file:org.apache.myriad.state.utils.ByteBufferSupport.java

public static ByteBuffer fillBuffer(byte src[]) {
    ByteBuffer bb = createBuffer(src.length);
    bb.put(src);//from w  ww  .j a v a2 s .co m
    bb.rewind();
    return bb;
}

From source file:org.apache.myriad.state.utils.ByteBufferSupport.java

public static ByteBuffer toBuffer(GeneratedMessage message) {
    byte dst[];//w w w . j a  v a  2  s .c o  m
    int size;
    if (message != null) {
        size = message.getSerializedSize() + INT_SIZE;
        dst = message.toByteArray();
    } else {
        size = INT_SIZE;
        dst = ZERO_BYTES;
    }
    ByteBuffer bb = createBuffer(size);
    putBytes(bb, dst);
    bb.rewind();
    return bb;
}

From source file:jext2.Inode.java

/** allocate a ByteBuffer big enough for a Inode */
public static ByteBuffer allocateByteBuffer() {
    ByteBuffer buf = ByteBuffer.allocate(Superblock.getInstance().getInodeSize());
    buf.rewind();
    return buf;//from   www. ja  v a  2s. com
}

From source file:com.amazonaws.services.sqs.MessageMD5ChecksumHandler.java

/**
 * Update the digest using a sequence of bytes that consists of the length
 * (in 4 bytes) of the input ByteBuffer and all the bytes it contains.
 *//* ww  w.j  av a  2s . c  o m*/
private static void updateLengthAndBytes(MessageDigest digest, ByteBuffer binaryValue) {
    // Rewind the ByteBuffer, in case that get/put operations were applied to
    // the unmarshalled BB before it's passed to this handler.
    binaryValue.rewind();
    int size = binaryValue.remaining();
    ByteBuffer lengthBytes = ByteBuffer.allocate(INTEGER_SIZE_IN_BYTES).putInt(size);
    digest.update(lengthBytes.array());
    digest.update(binaryValue);
}