Hi I had once worked on an application with approximately 40 tags. I had an Ant task that compiled these tags and build a jar file. Then the ant task would also deploy it on tomcat and restart the webapp. The webapp restart time was very low and also client http request servicing was very quick.
What I find strange is the amount of time taken to compile the classes in your case? I think you have already suggested the improvements, so just try those out. Please also post the results. Thanks Tejas -----Original Message----- From: John Cherouvim [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 26, 2006 1:36 PM To: users@tomcat.apache.org Subject: JSP 2.0 tag files slowing development/deployment Hello I'm building a mid scale web application for use within an intranet. I'm using a custom web framework to handle flow, user input, validations, persistence with hibernate and views with JSP and JSP 2.0 tag files. I use tomcat 5.0.28 and in particular this feature it has where you can write you own tag files in the WEB-INF/tags folder, and tomcat will compile them and make them available in the JSPs. I like this feature because it provides me encapsulation. I can call any tag I like with parameters and in addition I also use JSTL and EL which allows me to do anything I would ever want on the presentation side of the application. I've used jsp tag files before, in a much smaller application where I had something like 10 tags. Right now I am 50% done with this application and I already have 120 tag files to render pojos, fields, various html controls etc. Most tags call other tags in order to generate the whole page. The first (small) problem is that every time I change something on a tag, particularly in fine grained tags (which are heavily being used from other tags) then tomcat has to recompile everything. It takes around 1.5 minutes to do that on my workstation. The second (big) problem, is when I try to deploy on the client's web server (intel xeon with 4 cpus with tomcat 5.0.28). I deploy and tomcat starts up in something like 9 seconds. Then I access the application for the first time, using a browser, and it takes more than an hour to build the work\Catalina\localhost\MY-APPLICATION\org\apache\jsp folder. Looking at the generated sources of those tag files it seems to me that its taking so much because tomcat has to calculate all the dependencies between tags. As soon as everything has compiled, the application runs smothly as expected. There are 118 tag files, and the work\Catalina\localhost\MY-APPLICATION\org\apache\jsp folder ends up with 238 files (one for .java and one for .class) and takes up 2.7mb. I don't know why such a fast machine needs so much time to generate 1.47mb of source code, and compile it. This situation is really bad for me and I'd like to know what can I do to improve the situation. 1. Would tomcat 5.5.17 improve anything on this issue? 2. Would precompiling the JSPs and tags improve anything? 3. Can I upload my work\Catalina\localhost\MY-APPLICATION folder to the client's server and force that tomcat not to re-compile? I tried it and it did start compiling the jsps/tags again. 4. Would changing some tags from tag files to proper Java javax.servlet.jsp.tagext.Tag classes improve anything? 5. If I package my tag files into a jar, would then tomcat had to do the work thing? 6. Should I change to another templating engine, such as Velocity? thanks, Ioannis --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://www.patni.com World-Wide Partnerships. World-Class Solutions. _____________________________________________________________________ This e-mail message may contain proprietary, confidential or legally privileged information for the sole use of the person or entity to whom this message was originally addressed. Any review, e-transmission dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this e-mail in error kindly delete this e-mail from your records. If it appears that this mail has been forwarded to you without proper authority, please notify us immediately at [EMAIL PROTECTED] and delete this mail. _____________________________________________________________________
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