net.spy.memcached.transcoders
Class BaseSerializingTranscoder

java.lang.Object
  net.spy.memcached.compat.SpyObject
      net.spy.memcached.transcoders.BaseSerializingTranscoder

Direct Known Subclasses:

SerializingTranscoder, WhalinTranscoder, WhalinV1Transcoder

public abstract class BaseSerializingTranscoder
extends SpyObject

Base class for any transcoders that may want to work with serialized or compressed data.

Field Summary

protected String	charset
protected int	compressionThreshold
static int	DEFAULT_COMPRESSION_THRESHOLD Default compression threshold value.

Constructor Summary

BaseSerializingTranscoder(int max)
Initialize a serializing transcoder with the given maximum data size.

Method Summary

boolean	asyncDecode(CachedData d)
protected byte[]	compress(byte[] in) Compress the given array of bytes.
protected String	decodeString(byte[] data) Decode the string with the current character set.
protected byte[]	decompress(byte[] in) Decompress the given array of bytes.
protected Object	deserialize(byte[] in) Get the object represented by the given serialized bytes.
protected byte[]	encodeString(String in) Encode a string into the current character set.
int	getMaxSize()
protected byte[]	serialize(Object o) Get the bytes representing the given serialized object.
void	setCharset(String to) Set the character set for string value transcoding (defaults to UTF-8).
void	setCompressionThreshold(int to) Set the compression threshold to the given number of bytes.

Methods inherited from class net.spy.memcached.compat.SpyObject

getLogger

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_COMPRESSION_THRESHOLD

public static final int DEFAULT_COMPRESSION_THRESHOLD

Default compression threshold value.

See Also:

Constant Field Values

compressionThreshold

protected int compressionThreshold

charset

protected String charset

Constructor Detail

BaseSerializingTranscoder

public BaseSerializingTranscoder(int max)

Initialize a serializing transcoder with the given maximum data size.

Method Detail

asyncDecode

public boolean asyncDecode(CachedData d)

setCompressionThreshold

public void setCompressionThreshold(int to)

Set the compression threshold to the given number of bytes. This transcoder will attempt to compress any data being stored that's larger than this.

Parameters:

to - the number of bytes

setCharset

public void setCharset(String to)

Set the character set for string value transcoding (defaults to UTF-8).

serialize

protected byte[] serialize(Object o)

Get the bytes representing the given serialized object.

deserialize

protected Object deserialize(byte[] in)

Get the object represented by the given serialized bytes.

compress

protected byte[] compress(byte[] in)

Compress the given array of bytes.

decompress

protected byte[] decompress(byte[] in)

Decompress the given array of bytes.

Returns:

null if the bytes cannot be decompressed

decodeString

protected String decodeString(byte[] data)

Decode the string with the current character set.

encodeString

protected byte[] encodeString(String in)

Encode a string into the current character set.

getMaxSize

public int getMaxSize()