org.jboss.marshalling

Class Pair.Externalizer

java.lang.Object

org.jboss.marshalling.Pair.Externalizer

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Externalizer

Enclosing class:

Pair<A,B>

public static final class Pair.Externalizer
extends java.lang.Object
implements Externalizer, java.io.Externalizable

An externalizer for Pair instances.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private static Pair.Externalizer	instance
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
Externalizer()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	createExternal(java.lang.Class<?> subjectType, java.io.ObjectInput input, Creator defaultCreator) Create an instance of a type.
static Pair.Externalizer	getInstance() Get the single instance.
void	readExternal(java.io.ObjectInput in)
void	readExternal(java.lang.Object subject, java.io.ObjectInput input) Read the external representation of an object.
protected java.lang.Object	readResolve() Resolve the object to the single externalizer instance.
void	writeExternal(java.lang.Object subject, java.io.ObjectOutput output) Write the external representation of an object.
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

instance

private static final Pair.Externalizer instance

Constructor Detail

Externalizer

public Externalizer()

Method Detail

getInstance

public static Pair.Externalizer getInstance()

Get the single instance. Though multiple instances can be created using the public constructor, only a single instance need be used in practice since this class maintains no internal state.

Returns:

the instance

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.

Specified by:

writeExternal in interface Externalizer

Parameters:

subject - the object to externalize

output - the output

Throws:

java.io.IOException - if an error occurs

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. The object may then be initialized from input, or that may be deferred to the readExternal() method. Instances may simply delegate the task to the given Creator. Note that this method is called only on the leaf class, so externalizers for non-final classes that initialize the instance from the stream need to be aware of this.

Specified by:

createExternal in interface Externalizer

Parameters:

subjectType - the type of object to create

input - the input

defaultCreator - the configured creator

Returns:

the new instance

Throws:

java.io.IOException - if an error occurs

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

readExternal

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

Read the external representation of an object. The object will already be instantiated, but may be uninitialized, when this method is called.

Specified by:

readExternal in interface Externalizer

Parameters:

subject - the object to read

input - the input

writeExternal

public void writeExternal(java.io.ObjectOutput out)

Specified by:

writeExternal in interface java.io.Externalizable

readExternal

public void readExternal(java.io.ObjectInput in)

Specified by:

readExternal in interface java.io.Externalizable

readResolve

protected java.lang.Object readResolve()

Resolve the object to the single externalizer instance.

Returns:

the instance