Java ByteBuffer Write writeXid(ByteBuffer logBuf, Xid xid)

Description

write Xid

License

Open Source License

Declaration

public static void writeXid(ByteBuffer logBuf, Xid xid) 

Method Source Code

//package com.java2s;
/*-//ww  w . j av  a 2 s.c o  m
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 2002-2010 Oracle.  All rights reserved.
 *
 */

import java.nio.ByteBuffer;

import javax.transaction.xa.Xid;

public class Main {
    public static void writeXid(ByteBuffer logBuf, Xid xid) {
        byte[] gid = xid.getGlobalTransactionId();
        byte[] bqual = xid.getBranchQualifier();

        writeInt(logBuf, xid.getFormatId());

        if (gid == null) {
            logBuf.put((byte) -1);
        } else {
            logBuf.put((byte) (gid.length));
            logBuf.put(gid);
        }

        if (bqual == null) {
            logBuf.put((byte) -1);
        } else {
            logBuf.put((byte) (bqual.length));
            logBuf.put(bqual);
        }
    }

    /**
     * Write an int into the log.
     */
    public static void writeInt(ByteBuffer logBuf, int i) {
        byte b = (byte) ((i >> 0) & 0xff);
        logBuf.put(b);
        b = (byte) ((i >> 8) & 0xff);
        logBuf.put(b);
        b = (byte) ((i >> 16) & 0xff);
        logBuf.put(b);
        b = (byte) ((i >> 24) & 0xff);
        logBuf.put(b);
    }
}

Related

1. writeVarLong(ByteBuffer buff, long x)
2. writeVarLong(long n, ByteBuffer buff)
3. writeVarLong(long value, ByteBuffer buf)
4. writeVInt(ByteBuffer bb, int i)
5. writeWithLength(ByteBuffer buffer, byte[] src)