org.jboss.messaging.util
Class SafeUTF

java.lang.Object
  org.jboss.messaging.util.SafeUTF

public class SafeUTF

extends java.lang.Object

A SafeUTF

Version:

$Revision: 1174 $ $Id: SafeUTF.java 1174 2006-08-02 14:14:32Z timfox $ There is a "bug" in JDK1.4 / 1.5 DataOutputStream.writeUTF() which means it does not work with Strings >= 64K serialized size. See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4806007 We work around this by chunking larger strings into smaller pieces. Note we only support TextMessage and ObjectMessage bodies with serialized length >= 64K We DO NOT support Strings written to BytesMessages or StreamMessages or written as keys or values in MapMessages, or as String properties or other String fields having serialized length >= 64K This is for performance reasons since there is an overhead in coping with large Strings

Author:

Tim Fox, Adrian Brock

Field Summary

static SafeUTF

instance

Constructor Summary

SafeUTF(int chunkSize)

Method Summary

int	getLastReadBufferSize()
java.lang.String	safeReadUTF(java.io.DataInputStream in)
void	safeWriteUTF(java.io.DataOutputStream out, java.lang.String str)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

instance

public static SafeUTF instance

Constructor Detail

SafeUTF

public SafeUTF(int chunkSize)

Method Detail

getLastReadBufferSize

public int getLastReadBufferSize()

safeWriteUTF

public void safeWriteUTF(java.io.DataOutputStream out,
                         java.lang.String str)
                  throws java.io.IOException

Throws:

java.io.IOException

safeReadUTF

public java.lang.String safeReadUTF(java.io.DataInputStream in)
                             throws java.io.IOException

Throws:

java.io.IOException