That sounds even better. I'm looking forward to test the modified impl in the
next RC/release.
Mark Thomas wrote:
>
> On 10/06/2010 14:42, John Wu wrote:
>>
>> Hi Mark,
>>
>> The fix of "to derive the type directly from the value which ..." sounds
>> not
>> a solution. In a slightly more complex scenario, the fix still fails.
>>
>> Say the method signature is "public * theMethod(TheSupperType o)" and
>> calling the method in EL like
>> "#{theClassInstance.theMethod(theDerivedTypeInstance)}", where the supper
>> type can be a supper class or an interface, your fix fails.
>
> super has one p, not two.
>
> I looked at the current code and the spec again. There is no need for
> any of this complexity. The exact types are defined when the method
> expression is created. I'm not sure why I was trying to derive them at
> invocation time when they were already available.
>
> I have added a test case, modified the implementation and checked the
> new code with the EL TCK and all looks to be OK.
>
> Mark
>
>>
>> Example project attached.
>>
>> My suggestion as to the solution of resolving which method to call:
>> . Retrieve all methods of *theClassInstance*, and put them into the
>> CANDIDATES collection;
>>
>> // Search a match by method name
>> . For each method in CANDIDATES,
>> . if the name is not *theMethod*, remove it from CANDIDATES
>> . If CANDIDATES is empty, then NOT-FOUND;
>> . else if only one is left, then FOUND;
>>
>> // Search a match by params count
>> . else, count the number of actual params,
>> . For each method in CANDIDATES,
>> . if the number of formal params does not match that of actual params,
>> remove it from CANDIDATES
>> . // Optoional, handle cases of "method has variable number of
>> arguments"
>> . If CANDIDATES is empty, then NOT-FOUND;
>> . else if only one is left, then FOUND;
>>
>> // Search a match by param types
>> . else, evaluate all actual params;
>> . For each method in CANDIDATES,
>> . if NOT( for-each formalParamType.isAssignableFrom(actualParamType)
>> ),
>> remove it from CANDIDATES
>> . // Optoional, handle cases of "method has variable number of
>> arguments"
>> . If CANDIDATES is empty, then NOT-FOUND;
>> . else if only one is left, then FOUND;
>>
>> . else, AMBIGUOUS
>>
>>
>> John Wu
>> http://old.nabble.com/file/p28843317/jsf-2.0-el-2.2.testcase-v2.zip
>> jsf-2.0-el-2.2.testcase-v2.zip
>
>
>
>
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