com.dyuproject.protostuff

Class WriteSession

java.lang.Object

com.dyuproject.protostuff.WriteSession

public class WriteSession
extends java.lang.Object

Designed to be subclassed by implementations of Output for easier serialization code for streaming or full buffering. This is used when objects need to be serialzied/written into a LinkedBuffer.

Author:

David Yu

Date created:

Sep 20, 2010

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	WriteSession.FlushHandler

Field Summary

Fields

Modifier and Type	Field and Description
WriteSession.FlushHandler	flushHandler
LinkedBuffer	head The main/root/head buffer of this write session.
int	nextBufferSize The next buffer size used when growing the buffer.
java.io.OutputStream	out The sink of this buffer.
WriteSink	sink The sink of this write session.
protected int	size The actual number of bytes written to the buffer.
protected LinkedBuffer	tail The last buffer of this write session (This points to head if growing not needed).

Constructor Summary

Constructors

Constructor and Description
WriteSession(LinkedBuffer head)
WriteSession(LinkedBuffer head, int nextBufferSize)
WriteSession(LinkedBuffer head, java.io.OutputStream out)
WriteSession(LinkedBuffer head, java.io.OutputStream out, WriteSession.FlushHandler flushHandler, int nextBufferSize)

Method Summary

Methods

Modifier and Type	Method and Description
WriteSession	clear() The buffer will be cleared (tail will point to the head) and the size will be reset to zero.
protected int	flush(byte[] buf, int offset, int len)
protected int	flush(byte[] buf, int offset, int len, byte[] next, int nextoffset, int nextlen)
protected int	flush(LinkedBuffer lb, byte[] buf, int offset, int len)
int	getSize() Returns the amount of bytes written in this session.
void	reset() Resets this session for re-use.
byte[]	toByteArray() Returns a single byte array containg all the contents written to the buffer(s).

Methods inherited from class java.lang.Object

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

Field Detail

head

public final LinkedBuffer head

The main/root/head buffer of this write session.

tail

protected LinkedBuffer tail

The last buffer of this write session (This points to head if growing not needed).

size

protected int size

The actual number of bytes written to the buffer.

nextBufferSize

public final int nextBufferSize

The next buffer size used when growing the buffer.

out

public final java.io.OutputStream out

The sink of this buffer.

flushHandler

public final WriteSession.FlushHandler flushHandler

sink

public final WriteSink sink

The sink of this write session.

Constructor Detail

WriteSession

public WriteSession(LinkedBuffer head)

WriteSession

public WriteSession(LinkedBuffer head,
            int nextBufferSize)

WriteSession

public WriteSession(LinkedBuffer head,
            java.io.OutputStream out,
            WriteSession.FlushHandler flushHandler,
            int nextBufferSize)

WriteSession

public WriteSession(LinkedBuffer head,
            java.io.OutputStream out)

Method Detail

reset

public void reset()

Resets this session for re-use. Meant to be overridden by subclasses that have other state to reset.

clear

public WriteSession clear()

The buffer will be cleared (tail will point to the head) and the size will be reset to zero.

getSize

public final int getSize()

Returns the amount of bytes written in this session.

toByteArray

public final byte[] toByteArray()

Returns a single byte array containg all the contents written to the buffer(s).

flush

protected int flush(byte[] buf,
        int offset,
        int len)
             throws java.io.IOException

Throws:

java.io.IOException

flush

protected int flush(byte[] buf,
        int offset,
        int len,
        byte[] next,
        int nextoffset,
        int nextlen)
             throws java.io.IOException

Throws:

java.io.IOException

flush

protected int flush(LinkedBuffer lb,
        byte[] buf,
        int offset,
        int len)
             throws java.io.IOException

Throws:

java.io.IOException