org.glassfish.grizzly.memcached

Class BufferWrapper<T>

java.lang.Object

org.glassfish.grizzly.memcached.BufferWrapper<T>

All Implemented Interfaces:

org.glassfish.grizzly.Cacheable

public class BufferWrapper<T>
extends Object
implements org.glassfish.grizzly.Cacheable

Simple wrapper class for Buffer, which has original message origin, original object type BufferWrapper.BufferType and converted Buffer

Messages which should be sent to the remote peer via network will be always converted into Buffer instance by wrap(T, org.glassfish.grizzly.memory.MemoryManager), and the received packet will be always restored to its original messages by unwrap(org.glassfish.grizzly.Buffer, org.glassfish.grizzly.memcached.BufferWrapper.BufferType, org.glassfish.grizzly.memory.MemoryManager)

Author:

Bongjae Chang

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BufferWrapper.BufferType

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_COMPRESSION_THRESHOLD

Method Summary

Methods

Modifier and Type	Method and Description
org.glassfish.grizzly.Buffer	getBuffer() Return buffer corresponding to original object
T	getOrigin() Return original object
BufferWrapper.BufferType	getType() Return original object's type
void	recycle()
String	toString()
static Object	unwrap(org.glassfish.grizzly.Buffer buffer, BufferWrapper.BufferType type, org.glassfish.grizzly.memory.MemoryManager memoryManager) Return the original instance from buffer
static Object	unwrap(org.glassfish.grizzly.Buffer buffer, int position, int limit, BufferWrapper.BufferType type, org.glassfish.grizzly.memory.MemoryManager memoryManager) Return the original instance from buffer
static <T> BufferWrapper<T>	wrap(T origin, org.glassfish.grizzly.memory.MemoryManager memoryManager) Return BufferWrapper instance from original object

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_COMPRESSION_THRESHOLD

public static final int DEFAULT_COMPRESSION_THRESHOLD

See Also:

Constant Field Values

Method Detail

getOrigin

public T getOrigin()

Return original object

Returns:

original object

getBuffer

public org.glassfish.grizzly.Buffer getBuffer()

Return buffer corresponding to original object

Returns:

the converted buffer

getType

public BufferWrapper.BufferType getType()

Return original object's type

Returns:

buffer type

recycle

public void recycle()

Specified by:

recycle in interface org.glassfish.grizzly.Cacheable

wrap

public static <T> BufferWrapper<T> wrap(T origin,
                        org.glassfish.grizzly.memory.MemoryManager memoryManager)
                             throws IllegalArgumentException

Return BufferWrapper instance from original object

Parameters:

origin - original object

memoryManager - the memory manager for allocating Buffer

Returns:

the buffer wrapper which included origin, buffer type and buffer corresponding to origin

Throws:

IllegalArgumentException - if given parameters are not valid

unwrap

public static Object unwrap(org.glassfish.grizzly.Buffer buffer,
            BufferWrapper.BufferType type,
            org.glassfish.grizzly.memory.MemoryManager memoryManager)

Return the original instance from buffer

Parameters:

buffer - the Buffer for being restored

type - the type of original object

memoryManager - the memory manager which will be used for decompressing packets

Returns:

the restored object

unwrap

public static Object unwrap(org.glassfish.grizzly.Buffer buffer,
            int position,
            int limit,
            BufferWrapper.BufferType type,
            org.glassfish.grizzly.memory.MemoryManager memoryManager)

Return the original instance from buffer

Parameters:

buffer - the Buffer for being restored

position - the position of buffer to convert buffer into origin

limit - the limit of buffer to convert buffer into origin

type - the type of original object

memoryManager - the memory manager which will be used for decompressing packets

Returns:

the restored object

toString

public String toString()

Overrides:

toString in class Object