org.terracotta.offheapstore.storage.portability
Class SerializablePortability

java.lang.Object
  org.terracotta.offheapstore.storage.portability.SerializablePortability

All Implemented Interfaces:

Portability<Serializable>

Direct Known Subclasses:

PersistentSerializablePortability

public class SerializablePortability
extends Object
implements Portability<Serializable>

A trivially compressed Java serialization based portability.

Class descriptors in the resultant bytes are encoded as integers. Mappings between the integer representation and the ObjectStreamClass, and the Class and the integer representation are stored in a single on-heap map.

Author:

Chris Dennis

Nested Class Summary

protected static class

SerializablePortability.SerializableDataKey

Field Summary

protected ConcurrentMap<Object,Object>	lookup
protected int	nextStreamIndex

Constructor Summary

SerializablePortability()

SerializablePortability(ClassLoader loader)

Method Summary

protected void	addedMapping(Integer rep, ObjectStreamClass disconnected)
Serializable	decode(ByteBuffer buffer) Decodes a ByteBuffer to an object of type T.
protected static ObjectStreamClass	disconnect(ObjectStreamClass desc)
ByteBuffer	encode(Serializable object) Encodes an object of type T as a ByteBuffer.
boolean	equals(Object value, ByteBuffer readBuffer) Returns true if the encoded object once decoded would be Object.equals(Object) to the supplied object.
ObjectInputStream	getObjectInputStream(InputStream input)
ObjectOutputStream	getObjectOutputStream(OutputStream out)
protected int	getOrAddMapping(ObjectStreamClass desc)

Methods inherited from class java.lang.Object

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

Field Detail

nextStreamIndex

protected int nextStreamIndex

lookup

protected final ConcurrentMap<Object,Object> lookup

Constructor Detail

SerializablePortability

public SerializablePortability()

SerializablePortability

public SerializablePortability(ClassLoader loader)

Method Detail

encode

public ByteBuffer encode(Serializable object)

Description copied from interface: Portability

Encodes an object of type T as a ByteBuffer.

Specified by:

encode in interface Portability<Serializable>

Parameters:

object - object to be encoded

Returns:

the encoded object

decode

public Serializable decode(ByteBuffer buffer)

Description copied from interface: Portability

Decodes a ByteBuffer to an object of type T.

Specified by:

decode in interface Portability<Serializable>

Parameters:

buffer - bytes to decode

Returns:

the decoded object

getObjectOutputStream

public ObjectOutputStream getObjectOutputStream(OutputStream out)
                                         throws IOException

Throws:

IOException

getObjectInputStream

public ObjectInputStream getObjectInputStream(InputStream input)
                                       throws IOException

Throws:

IOException

equals

public boolean equals(Object value,
                      ByteBuffer readBuffer)

Description copied from interface: Portability

Returns true if the encoded object once decoded would be Object.equals(Object) to the supplied object.

Specified by:

equals in interface Portability<Serializable>

Parameters:

value - object to compare to

readBuffer - buffer containing encoded object

Returns:

true if the two parameters are "equal"

getOrAddMapping

protected int getOrAddMapping(ObjectStreamClass desc)
                       throws IOException

Throws:

IOException

addedMapping

protected void addedMapping(Integer rep,
                            ObjectStreamClass disconnected)

disconnect

protected static ObjectStreamClass disconnect(ObjectStreamClass desc)