com.googlecode.jpattern.core.chain
Class AChainElement

java.lang.Object
  com.googlecode.jpattern.core.chain.AChainElement

All Implemented Interfaces:

IChainElement, java.io.Serializable

Direct Known Subclasses:

AChainElementBlocking, AChainElementUnblocking

public abstract class AChainElement
extends java.lang.Object
implements IChainElement

Author:

Francesco Cina' 29/gen/2011

See Also:

Serialized Form

Constructor Summary

AChainElement(IChainElement previousChainElement)

Method Summary

IChainResult	exec() Execute the chain
abstract void	execute()
protected IChainElement	getPreviousChainElement()
abstract boolean	tryExecution(IChainResult previousElementResult)
abstract boolean	verifyCondition()

Methods inherited from class java.lang.Object

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

Constructor Detail

AChainElement

public AChainElement(IChainElement previousChainElement)

Method Detail

getPreviousChainElement

protected IChainElement getPreviousChainElement()

exec

public final IChainResult exec()
                        throws java.lang.Exception

Description copied from interface: IChainElement

Execute the chain

Specified by:

exec in interface IChainElement

Returns:

true if one the element did the job; false means that there isn't an element which can be activated at the current condition

Throws:

java.lang.Exception

verifyCondition

public abstract boolean verifyCondition()

execute

public abstract void execute()

tryExecution

public abstract boolean tryExecution(IChainResult previousElementResult)