DCL

An elegant OOP with mixins + AOP for JavaScript.

advise.after()

Version 1.x

This is a convenience function to weave an after advice based on advise().

Description

This is a shortcut function to weave one after advice with an object’s method. Logically it is defined as:

advise.after()
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advise.after = function(object, name, advice){
  return advise(object, name, {
    after: advice
  });
};

It means that instead of:

Long
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var adv = advise(object, name, {
  after: advice
});

It is possible to write a shorter version:

Short
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var adv = advice.after(object, name, advice);

Advice function

This type of advice is a regular function. It is called with the same context as an advised method. It takes two parameters: args is an arguments object (a pseudo-array) used to call an advised method, and result, which is a returned value or a thrown exception object. Its returned value is ignored.

It is not recommended to modify parameters or a returned value inside after advice. Use around advice for that.

It is recommended to derive all exception objects from the standard Error object, so erroneous and normal result values would be distinct.

Returned value

Just like advise() it is based on, it returns an opaque object with a single method: unadvise(). Calling it without parameters removes all advices set with that call to advise().

In order to be compatible with general destruction mechanisms it defines one more method: destroy(), which is an alias to unadvise().