org.pentaho.reporting.libraries.serializer

Class SerializerHelper

java.lang.Object

org.pentaho.reporting.libraries.serializer.SerializerHelper

public class SerializerHelper
extends Object

The SerializeHelper is used to make implementing custom serialization handlers easier. Handlers for certain object types need to be added to this helper before this implementation is usable.

Author:

Thomas Morgner

Constructor Summary

Constructors

Constructor and Description
SerializerHelper() Creates a new SerializerHelper.

Method Summary

Modifier and Type	Method and Description
static SerializerHelper	getInstance() Returns or creates a new SerializerHelper.
boolean	isSerializable(Object o)
Object	readObject(ObjectInputStream in) Reads the object from the object input stream.
void	registerMethod(SerializeMethod method) Registers a new SerializeMethod with this SerializerHelper.
void	unregisterMethod(SerializeMethod method) Deregisters a new SerializeMethod with this SerializerHelper.
void	writeObject(Object o, ObjectOutputStream out) Writes a serializable object description to the given object output stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

SerializerHelper

public SerializerHelper()

Creates a new SerializerHelper.

Method Detail

getInstance

public static SerializerHelper getInstance()

Returns or creates a new SerializerHelper. When a new instance is created by this method, all known SerializeMethods are registered.

Returns:

the SerializerHelper singleton instance.

registerMethod

public void registerMethod(SerializeMethod method)

Registers a new SerializeMethod with this SerializerHelper.

Parameters:

method - the method that should be registered.

unregisterMethod

public void unregisterMethod(SerializeMethod method)

Deregisters a new SerializeMethod with this SerializerHelper.

Parameters:

method - the method that should be deregistered.

writeObject

public void writeObject(Object o,
                        ObjectOutputStream out)
                 throws IOException

Writes a serializable object description to the given object output stream. This method selects the best serialize helper method for the given object.

Parameters:

o - the to be serialized object.

out - the outputstream that should receive the object.

Throws:

IOException - if an I/O error occured.

isSerializable

public boolean isSerializable(Object o)

readObject

public Object readObject(ObjectInputStream in)
                  throws IOException,
                         ClassNotFoundException

Reads the object from the object input stream. This object selects the best serializer to read the object.

Make sure, that you use the same configuration (library and class versions, registered methods in the SerializerHelper) for reading as you used for writing.

Parameters:

in - the object input stream from where to read the serialized data.

Returns:

the generated object.

Throws:

IOException - if reading the stream failed.

ClassNotFoundException - if serialized object class cannot be found.