0000279: proxy caching for included jsp's doesn't always work

(0000314)
user241
06-20-05 00:00

i should have listed this bug as a high priority. it's a show stopper for migrating to resin 3.

(0000315)
user241
06-20-05 00:00

after further testing, i have discovered that of those pages that are sensitive to a size, the cutoff point is 16384 exactly i.e. 16k. anything larger than this size will not get cached by resin.

(0000316)
nquery
06-20-05 00:00

i have whittled this issue down to the following:

if more than 16k (16384 bytes exactly) of data is written out to bodyContent.getEnclosingWriter() from within the doAfterBody method of a tag then the page won't cache. eg.

    public int doAfterBody() throws JspException {

          BodyContent bc = getBodyContent();
          bc.getEnclosingWriter().print(something bigger than 16k);
        }

if instead i store the contents to a instance variable and then write the contents out from doEndTag then it works!!

    public int doEndTag() throws JspException {

        try {
            pageContext.getOut().print(somethinglargerthan16k);
        } catch (IOException e) {
            e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
        }

        return EVAL_PAGE;
    }

I have coded a work around as seen in the attached file, but it looks like there is definitely a bug in the enclosing writer's when handling tag bodies.

(0000791)
ferg
01-26-06 15:23

jsp/17ah

Issue History
Date Modified	Username	Field	Change
06-20-05 00:00	user241	New Issue
01-26-06 15:23	ferg	Note Added: 0000791
01-26-06 15:23	ferg	Assigned To	=> ferg
01-26-06 15:23	ferg	Status	acknowledged => closed
01-26-06 15:23	ferg	Resolution	open => fixed
01-26-06 15:23	ferg	version	3.0.13 =>
01-26-06 15:23	ferg	Fixed in Version	=> 3.0.18

Notes
(0000314) user241 06-20-05 00:00	i should have listed this bug as a high priority. it's a show stopper for migrating to resin 3.

(0000315) user241 06-20-05 00:00	after further testing, i have discovered that of those pages that are sensitive to a size, the cutoff point is 16384 exactly i.e. 16k. anything larger than this size will not get cached by resin.

(0000316) nquery 06-20-05 00:00	i have whittled this issue down to the following: if more than 16k (16384 bytes exactly) of data is written out to bodyContent.getEnclosingWriter() from within the doAfterBody method of a tag then the page won't cache. eg. public int doAfterBody() throws JspException { BodyContent bc = getBodyContent(); bc.getEnclosingWriter().print(something bigger than 16k); } if instead i store the contents to a instance variable and then write the contents out from doEndTag then it works!! public int doEndTag() throws JspException { try { pageContext.getOut().print(somethinglargerthan16k); } catch (IOException e) { e.printStackTrace(); //To change body of catch statement use File \| Settings \| File Templates. } return EVAL_PAGE; } I have coded a work around as seen in the attached file, but it looks like there is definitely a bug in the enclosing writer's when handling tag bodies.

(0000791) ferg 01-26-06 15:23	jsp/17ah

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