org.strutsit.chain
Class ChainFacadeImpl

java.lang.Object
  org.strutsit.chain.ChainFacadeImpl

All Implemented Interfaces:

ChainFacade

public final class ChainFacadeImpl

extends java.lang.Object

implements ChainFacade

Implementation of the ChainFacade-Interface. The Facade is a singleton. It holds the configuration of the chain-Framework.

Since:

JDK 1.4

Version:

$Revision: 1.9 $

Author:

Manfred Wolff

Method Summary

void	destroy() Frees all Resources.
boolean	execute(java.lang.String commandString, org.apache.commons.chain.Context context) Executes a chain or a single command by name.
static ChainFacade	getInstance() Returns the singleton of the facade.
void	initFacade() Inits the framework.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ChainFacade getInstance()

Returns the singleton of the facade.

Returns:

The one and only instance of the facade.

initFacade

public void initFacade()
                throws ChainException

Inits the framework. The method has the following responsibilities:

• Reading the configuration and preparing the ChainConfiguration.
• Checking the dependencies of the chains and commands.

Specified by:

initFacade in interface ChainFacade

Throws:

ChainException - if something fails

See Also:

ChainFacade.initFacade()

destroy

public void destroy()

Frees all Resources.

Specified by:

destroy in interface ChainFacade

See Also:

ChainFacade.destroy()

execute

public boolean execute(java.lang.String commandString,
                       org.apache.commons.chain.Context context)
                throws ChainException

Executes a chain or a single command by name.

Specified by:

execute in interface ChainFacade

Parameters:

commandString - The name of the command or chain.

context - The Context for executing

Returns:

True if the command can fulfill the operation, otherwise false

Throws:

ChainException - if something goes wrong