org.apache.geronimo.messaging.io
Class AbstractReplacerResolver

java.lang.Object
  org.apache.geronimo.messaging.io.AbstractReplacerResolver

All Implemented Interfaces:

ReplacerResolver

Direct Known Subclasses:

DeploymentReplacerResolver, InputStreamReplacerResolver, MsgReplacerResolver, NullReplacerResolver, ReferenceReplacerResolver

public abstract class AbstractReplacerResolver

extends Object

implements ReplacerResolver

Base implementation for the ReplacerResolver contracts.

Version:

$Revision: 1.2 $ $Date: 2004/05/27 14:18:13 $

Constructor Summary

AbstractReplacerResolver()

Method Summary

ReplacerResolver	append(ReplacerResolver anHandler) Appends a ReplacerResolver to this instance.
protected abstract Object	customReplaceObject(Object obj)
protected abstract Object	customResolveObject(Object obj)
ReplacerResolver	getNext() Gets the next online element of the chain.
boolean	isOffline() Indicates if this instance if online.
void	offline() Sets this instance offline.
void	online() Sets this instance online.
Object	replaceObject(Object obj) Replaces obj with another object.
Object	resolveObject(Object obj) Resolves/replaces obj with another object.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractReplacerResolver

public AbstractReplacerResolver()

Method Detail

online

public void online()

Description copied from interface: ReplacerResolver

Sets this instance online.
This instance can be added to a chain.

Specified by:

online in interface ReplacerResolver

offline

public void offline()

Description copied from interface: ReplacerResolver

Sets this instance offline.
This instance does no more belong to the chain.

Specified by:

offline in interface ReplacerResolver

isOffline

public boolean isOffline()

Description copied from interface: ReplacerResolver

Indicates if this instance if online.

Specified by:

isOffline in interface ReplacerResolver

Returns:

true if online - it belongs to a chain.

append

public ReplacerResolver append(ReplacerResolver anHandler)

Description copied from interface: ReplacerResolver

Appends a ReplacerResolver to this instance.

Specified by:

append in interface ReplacerResolver

Parameters:

anHandler - Next ReplacerResolver of the chain.

Returns:

aNext.

getNext

public ReplacerResolver getNext()

Description copied from interface: ReplacerResolver

Gets the next online element of the chain.

Specified by:

getNext in interface ReplacerResolver

Returns:

Next element.

replaceObject

public Object replaceObject(Object obj)
                     throws IOException

Description copied from interface: ReplacerResolver

Replaces obj with another object.

Specified by:

replaceObject in interface ReplacerResolver

Parameters:

obj - Object to be replaced.

Returns:

Substitute. If obj is not to be replaced, then obj must be returned.

Throws:

IOException - Indicates an I/O error.

customReplaceObject

protected abstract Object customReplaceObject(Object obj)
                                       throws IOException

Throws:

IOException

resolveObject

public Object resolveObject(Object obj)
                     throws IOException

Description copied from interface: ReplacerResolver

Resolves/replaces obj with another object.

Specified by:

resolveObject in interface ReplacerResolver

Parameters:

obj - Object to be resolved/replaced.

Returns:

Substitute. If obj is not to be replaced, then obj must be returned.

Throws:

IOException - Indicates an I/O error.

customResolveObject

protected abstract Object customResolveObject(Object obj)
                                       throws IOException

Throws:

IOException