org.apache.tapestry5.ioc.services
Interface LazyAdvisor

All Known Implementing Classes:

LazyAdvisorImpl

public interface LazyAdvisor

An advisor that identifies methods which can be evaluated lazily and advises them. A method can be evaluated lazily if it returns an interface type and if it throws no checked exceptions. Lazy evaluation should be handled carefully, as if any of the parameters to a method are mutable, or the internal state of the invoked service changes, the lazily evaluated results may not match the immediately evaluated result. This effect is greatly exaggerated if the lazy return object is evaluated in a different thread than when it was generated.

Another consideration is that exceptions that would occur immediately in the non-lazy case are also deferred, often losing much context in the process.

Use laziness with great care.

Use the NotLazy annotation on methods that should not be advised.

Since:

5.1.0.0

Method Summary

void	addLazyMethodInvocationAdvice(MethodAdviceReceiver methodAdviceReceiver)

Method Detail

addLazyMethodInvocationAdvice

void addLazyMethodInvocationAdvice(MethodAdviceReceiver methodAdviceReceiver)