org.xmlBlaster.client.protocol.http.common
Class ObjectOutputStreamMicro

java.lang.Object
  org.xmlBlaster.client.protocol.http.common.ObjectOutputStreamMicro

All Implemented Interfaces:

I_ObjectStream

public class ObjectOutputStreamMicro
extends java.lang.Object
implements I_ObjectStream

ObjectOutputStreamMicro

Author:

Michele Laghi

Field Summary

private java.io.DataOutputStream

out

Fields inherited from interface org.xmlBlaster.client.protocol.http.common.I_ObjectStream

HASHTABLE, HASHTABLE_ARR, STRING, VECTOR

Constructor Summary

ObjectOutputStreamMicro(java.io.OutputStream outStream)

Method Summary

static int	getMessageLength(java.lang.String oid, java.lang.String key, java.lang.String qos, byte[] content) Returns the length of the message in bytes.
private void	writeHashtable(java.util.Hashtable map) Helper to write the map to an output stream without the use of a ObjectOutputStream (to allow to read it from j2me which does not have ObjectInputStream)
static int	writeMessage(java.io.OutputStream out, java.lang.String oid, java.lang.String key, java.lang.String qos, byte[] content) writes a message to the output stream.
void	writeObject(java.lang.Object obj)
private void	writeVector(java.util.Vector vec)

Methods inherited from class java.lang.Object

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

Field Detail

out

private java.io.DataOutputStream out

Constructor Detail

ObjectOutputStreamMicro

public ObjectOutputStreamMicro(java.io.OutputStream outStream)
                        throws java.io.IOException

Throws:

java.io.IOException

Method Detail

writeHashtable

private void writeHashtable(java.util.Hashtable map)
                     throws java.io.IOException

Helper to write the map to an output stream without the use of a ObjectOutputStream (to allow to read it from j2me which does not have ObjectInputStream)

Parameters:

out -

Throws:

java.io.IOException

writeVector

private void writeVector(java.util.Vector vec)
                  throws java.io.IOException

Throws:

java.io.IOException

writeObject

public void writeObject(java.lang.Object obj)
                 throws java.io.IOException

Throws:

java.io.IOException

getMessageLength

public static int getMessageLength(java.lang.String oid,
                                   java.lang.String key,
                                   java.lang.String qos,
                                   byte[] content)

Returns the length of the message in bytes.

Parameters:

key -

qos -

content -

Returns:

writeMessage

public static int writeMessage(java.io.OutputStream out,
                               java.lang.String oid,
                               java.lang.String key,
                               java.lang.String qos,
                               byte[] content)
                        throws java.io.IOException

writes a message to the output stream. The format of the message is [oid]\0[key]\0[qos]\0[content] where key and qos are (optional) String objects, and the content an (optional) byte[]. So the example '\0\0\0' of length 3 is an empty message (which is not written to the stream), 'xxx\0\0\0' is a message with an oid='xxx', no key no qos and no content.

Parameters:

oid - The oid of the message (can be null)

key - The key of the message (can be null)

qos - The qos of the message (can be null)

content - The content of the message (can be null)

Returns:

The length of the message. If the length is less than 3 (i.e. the message is empty because no oid, no key, no qos nor content), then it is not written to the stream. For oid, key qos and content: emtpy elements are threated as null elements.

Throws:

java.io.IOException