Isn't EVAL_BODY_INCLUDE deprecated?
At 2002-09-19 22:22:00 you wrote:
>On 18 Sep 2002, Craig Longman wrote:
>
>> 1) is this resetting of bodyContent the responsibility of the
>> implementing tag? seeing as the return from doStartTag() doesn't seem
>> to be included in the AttrSet that decides if a tag can be reused or
>> not, i guess it is? (the BodyTagSupport.doStartTag(), but it returns
>> EVAL_BODY_BUFFERED by default so it can assume that setBodyContent()
>> is called)
>
>Short answer: yes, the behavior you're describing is consistent with a
>container acting legally. The tag is responsible for adapting
>appropriately.
>
>(I should say, just for completeness, that questions like this get
>intricate fast, so it's important to note that what I say extemporaneously
>isn't official or backed up by authoritative word from the JSP expert
>group.)
>
>> 2) is the goal of using EVAL_BODY_INCLUDE when possible an admirable
>> one? considering that the included body _might_ be very big, i think it
>> is, but i'd like confirmation.
>
>Note that the page might be buffered anyway, which obviates your
>stream-to-the-client case. But in general, yes: EVAL_BODY_INCLUDE has
>the potential to be more efficient than EVAL_BODY_BUFFERED. All things
>being equal, it should run more quickly, though of course it's nearly
>impossible to say *how* much quickly without testing.
>
>> 3) is returning different values from doStartTag() a
>> stupid/dangerous/illegal thing to do?
>
>No, but as the logical conclusion of the issues you've raised, returning
>different codes for different invocations does require additional work on
>your part. I typically record state in an instance variable that's under
>the control of doStartTag(), as in:
>
> doStartTag() {
> // ...
> needBody = true;
> return EVAL_BODY_BUFFERED;
> }
>
> doEndTag() {
> if (needBody)
> // ...
> else
> // ...
> }
>
>Hope that helps,
>
>--
>Shawn Bayern
>"JSTL in Action" http://www.jstlbook.com
>
>
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