Package org.chenile.owiz.impl

Class FilterChain<InputType extends ChainContextContainer<InputType>>

java.lang.Object

org.chenile.owiz.impl.CommandBase<InputType>

org.chenile.owiz.impl.Chain<InputType>

org.chenile.owiz.impl.FilterChain<InputType>

Type Parameters:

InputType - .

All Implemented Interfaces:

AttachableCommand<InputType>, BypassableCommand<InputType>, Command<InputType>, OrchestrationAware<InputType>

public class FilterChain<InputType extends ChainContextContainer<InputType>>
extends Chain<InputType>
implements Command<InputType>, AttachableCommand<InputType>

A variation of the Chain for AOP like surround processing. In this implementation, the filter chain manufactures a chain of commands with each command having to continue the chain explicitly or return. This allows commands to implement surround processing. Normal chain does not allow "wrapping" functionality which is required for surround interception.

The InputType passed must have a way of continuing the chain by wrapping the ChainContext. Hence it needs to implement ChainContextContainer. All commands called by the chain can then assume that the context implements the interface. The ChainContext can then be extracted from the InputType and the doContinue() method can then be called by the command.

Author:

Raja Shankar Kolluru

Field Summary

Fields inherited from class org.chenile.owiz.impl.Chain

commandDescSet, currentIndex, INDEX

Fields inherited from class org.chenile.owiz.impl.CommandBase

commandDescriptor, orchConfigurator

Constructor Summary

Constructors

Constructor	Description
FilterChain()

Method Summary

Modifier and Type	Method	Description
protected void	doExecute(InputType context)

Methods inherited from class org.chenile.owiz.impl.Chain

attachCommand, obtainExecutionCommands, shouldStopChain

Methods inherited from class org.chenile.owiz.impl.CommandBase

bypass, execute, getConfigValue, getId, getParentId, obtainCommand, postprocess, preprocess, setCommandDescriptor, setOrchConfigurator

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.chenile.owiz.AttachableCommand

attachCommand

Methods inherited from interface org.chenile.owiz.Command

execute

Constructor Details

FilterChain

public FilterChain()

Method Details

doExecute

protected void doExecute(InputType context)
                  throws Exception

Overrides:

doExecute in class Chain<InputType extends ChainContextContainer<InputType>>

Throws:

Exception