org.codehaus.aspectwerkz.advice
Class PreAdvice

java.lang.Object
  org.codehaus.aspectwerkz.advice.AbstractAdvice
      org.codehaus.aspectwerkz.advice.AbstractPrePostAdvice
          org.codehaus.aspectwerkz.advice.PreAdvice

All Implemented Interfaces:

Advice, java.io.Serializable

Direct Known Subclasses:

CFlowPreAdvice

public abstract class PreAdvice

extends org.codehaus.aspectwerkz.advice.AbstractPrePostAdvice

Is invoked before that a specific join point (method or field) is executed.

Supports four different deployment models: PER_JVM, PER_CLASS, PER_INSTANCE A PER_THREAD.
The PER_JVM deployment model performance a bit better than the other models since no synchronization A object creation is needed.

Author:

Jonas Bonér

See Also:

aspectwerkz.DeploymentModel, Serialized Form

Constructor Summary

PreAdvice()
Sets the class of the class.

Method Summary

java.lang.Object	doExecute(JoinPoint joinPoint) Executes the current advice A then redirects to the next advice in the chain.
abstract void	execute(JoinPoint joinPoint) Callback method.

Methods inherited from class org.codehaus.aspectwerkz.advice.AbstractAdvice

getAdviceClass, getContainer, getDeploymentModel, getMemoryType, getName, getParameter, getParameters, getPerJvmAdvice, getSystem, newInstance, setAdviceClass, setContainer, setDeploymentModel, setName, setParameter, setParameters

Methods inherited from class java.lang.Object

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

Constructor Detail

PreAdvice

public PreAdvice()

Sets the class of the class.

Method Detail

execute

public abstract void execute(JoinPoint joinPoint)
                      throws java.lang.Throwable

Callback method. To be implemented by the user.

Parameters:

joinPoint - the join point the advices is executing at

Throws:

java.lang.Throwable

doExecute

public java.lang.Object doExecute(JoinPoint joinPoint)
                           throws java.lang.Throwable

Executes the current advice A then redirects to the next advice in the chain. Callback method for the framework.

Parameters:

joinPoint - the join point the advice is executing at

Returns:

the result from the next invocation

Throws:

java.lang.Throwable