org.jboss.marshalling
Class AbstractExternalizer

java.lang.Object
  org.jboss.marshalling.AbstractExternalizer

All Implemented Interfaces:

java.io.Serializable, Externalizer

public abstract class AbstractExternalizer
extends java.lang.Object
implements Externalizer

An externalizer base class which handles object creation in a default fashion.

See Also:

Serialized Form

Constructor Summary

AbstractExternalizer()

Method Summary

java.lang.Object	createExternal(java.lang.Class<?> subjectType, java.io.ObjectInput input, Creator defaultCreator) Create an instance of a type using the provided creator.
void	readExternal(java.lang.Object subject, java.io.ObjectInput input) Read the external representation of an object.
void	writeExternal(java.lang.Object subject, java.io.ObjectOutput output) Write the external representation of an object.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractExternalizer

public AbstractExternalizer()

Method Detail

createExternal

public java.lang.Object createExternal(java.lang.Class<?> subjectType,
                                       java.io.ObjectInput input,
                                       Creator defaultCreator)
                                throws java.io.IOException,
                                       java.lang.ClassNotFoundException

Create an instance of a type using the provided creator.

Specified by:

createExternal in interface Externalizer

Parameters:

subjectType - the type to create

input - the object input

defaultCreator - the creator

Returns:

a new instance

Throws:

java.io.IOException - if an I/O error occurs

java.lang.ClassNotFoundException - if the class could not be located

writeExternal

public void writeExternal(java.lang.Object subject,
                          java.io.ObjectOutput output)
                   throws java.io.IOException

Write the external representation of an object. The object's class and the externalizer's class will already have been written. This default implementation does nothing.

Specified by:

writeExternal in interface Externalizer

Parameters:

subject - the object to externalize

output - the output

Throws:

java.io.IOException - if an error occurs

readExternal

public void readExternal(java.lang.Object subject,
                         java.io.ObjectInput input)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Read the external representation of an object. The object will already be instantiated, but may be uninitialized, when this method is called. This default implementation does nothing.

Specified by:

readExternal in interface Externalizer

Parameters:

subject - the object to read

input - the input

Throws:

java.io.IOException - if an error occurs

java.lang.ClassNotFoundException - if a class could not be found during read