Any update please? :(
On Mon, Jun 22, 2009 at 11:28 PM, Ravi Chandra <[email protected]> wrote:
> hi,
>
> Any update on this please.
>
> *Issue:*
> 1. I have a variable defined with annotation
> 2, This variable is being assigned to an ArrayList
>
> *Now, i want to intercept this call *and execute a logic by AOP. In the
> interception
> 1. I should be able to access the annotated value
> 2. Return a new object called MYLIst
>
> The below mail therad is abt the same,
> 1. If i use set(* *List) then i cant access the annotation
> 2. If i use the below its (in eclipse) is throwing compilation errors
>
> pointcut listCut(LIST in) : set(@LIST* (*) * ) && @annotation(in);
>
> ArrayList around( LIST in) :listCut(in){
> System.out.println("**annotation " + thisJoinPoint + " ann:"
> + in.value());
> return new MyList();
> }
>
> *The java class i want to intercept::*
>
> public static void main(String[] argv) {
> UserAttributes u = new UserAttributes();
> u.alias = new ArrayList();
> }
>
> *Any ideas where i am going wrong? Please help.*
>
> Regards,
> Ravi
>
>
> ---------- Forwarded message ----------
> From: Ravi Chandra <[email protected]>
> Date: Sun, Jun 21, 2009 at 7:23 PM
> Subject: Re: [aspectj-users] (no subject)
> To: [email protected]
>
>
> hi,
>
> That was an intelligent soln.
>
> But, I have annotations on each of the fields( i didnt mention this
> previously) and during the interception by AOP i would like to access the
> annotated info also.
>
> *Original Class:*
> public class UserAttributes implements Interceptable {
> @IN(3)
> private List<String> alias;
>
> public int getAge() {
> return age;
> }
>
> public static void main(String[] argv) {
> UserAttributes u = new UserAttributes();
> u.alias = new ArrayList();
> u.children = new HashMap<String, String>();
> }
> }
>
> *and i tried:*
>
> pointcut annCut(Interceptable m, IN in):target(m) && set(@IN* (*) * )
> && @annotation(in);
>
> pointcut annListCut(Interceptable m, IN in) : cflow(annCut(m,in)) &&
> cflow(listCut()) && target(Interceptable+);
>
> after/ Around (Interceptable m, IN in): annListCut(m,in){
> * //here i should be able to get the fields annotation + return
> MYList object*
> System.out.println("point cut + annotation is.." + in.value());
> }
>
> *But this is cutting off *
>
> * public int* getAge() {
> return age;
> }
>
> method also, *which is not intended. *
>
> Any ideas please..
>
> regards,
> ravi
>
>
> On Sun, Jun 21, 2009 at 3:40 PM, Simone Gianni <[email protected]> wrote:
>
>> Hi Ravi,
>> you can declare a pointcut around the creation of any ArrayList, returning
>> MyArrayList as long as they are assign-compatible.
>>
>> That means that as long as :
>>
>> public class MyArrayList extends ArrayList { ...
>>
>> you can write :
>>
>> ArrayList around() : call(* ArrayList.new()) {
>> return new MyArrayList();
>> }
>>
>> This will replace do the trick. You can narrow it down to some classes
>> using within, withincode etc..
>>
>> ArrayList around() : call(* ArrayList.new()) && within(com.mycompany.*) {
>> return new MyArrayList();
>> }
>>
>> And you can add other advice to add parameters :
>>
>> ArrayList around(int size) : call(* ArrayList.new(int)) && args(size) {
>> return new MyArrayList(size);
>> }
>>
>> etc...
>>
>> In my Apache Magma Lab I use this kind of advice extensively to offer a
>> simpler alternative to the factory pattern/dependency injection/context
>> pollution.
>>
>> Hope this helps,
>> Simone
>>
>>
>>
>>
>>
>> Ravi Chandra wrote:
>>
>>> hi,
>>>
>>> I am trying hard to get a solution to this problem since last 4 days..
>>> but no luck; the issue is as below:
>>>
>>> I have java classes of this form
>>>
>>> public class UserAttributes implements Interceptable {
>>> private List<String> alias;
>>> private void someMethod(){
>>> *alias = new ArrayList(); // point 1*
>>> .... etc etc
>>> }
>>> }
>>>
>>> Now the problem is :
>>>
>>> When ever a variable is assigned to new ArrayList() i want it to be
>>> changed to new MyArrayList() instead
>>>
>>> i.e..: the point 1 above changes to an eqvivalent of
>>>
>>> *alias = new MYArrayList();*
>>>
>>> I am able to get this done
>>>
>>> aspect abc {
>>> pointcut listCut(Interceptable m, IN in):target(m) &&
>>> set(java.util.List+ *);
>>> after(Interceptable m, IN in):listCut(m,in){
>>> *UserAttributes.setAlias( new MyArrayList());*
>>> }
>>> }
>>>
>>> *but the point cut is getting very class specific. *I have abt 1000
>>> classes which have to be modified this way where ever the ArrayList is being
>>> used, now with this approach i need to write 1000 files; isnt there a
>>> generic way to do this?
>>>
>>> Any pointers/ help ? please suggest.
>>>
>>> regards,
>>> ravi
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> aspectj-users mailing list
>>> [email protected]
>>> https://dev.eclipse.org/mailman/listinfo/aspectj-users
>>>
>>>
>>
>>
>> --
>> Simone Gianni CEO Semeru s.r.l. Apache Committer
>> http://www.simonegianni.it/
>>
>> _______________________________________________
>> aspectj-users mailing list
>> [email protected]
>> https://dev.eclipse.org/mailman/listinfo/aspectj-users
>>
>
>
>
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