Martin, could you please give juel a quick try? Would be interested if if also suffers from this problem.
You can find a slightly tweaked (bugfixed) version of it on my github page http://github.com/struberg/juel The original is on juel.sourceforge.net LieGrue, strub > >From: Jakob Korherr <jakob.korh...@gmail.com> >To: MyFaces Development <dev@myfaces.apache.org> >Sent: Wed, August 25, 2010 5:10:09 PM >Subject: Re: EL method invocation performance > >Hi, > >Does this really have to happen at every method invocation or is this an >implementation problem? > >If it is an implementation problem and can be circumvent in any way, I would >contact the Glassfish and Tomcat developers about this ;) > >Regards, >Jakob > > >2010/8/25 Ivan <xhh...@gmail.com> > >How about trying the el api published by Geronimo ? it caches the >ExpressionFactory to avoid the search action by default. >> >> >>2010/8/25 Martin Koci <martin.k...@aura.cz> >> >> >>Hi, >>> >>>this problem is not in myfaces but affects performance especially in >>>render response phase: >>> >>>EL 2.2 introduces method invocation but if you try use it like >>>rendered="#{bean.getRendered(param)}" there is an unpleasant surprise: >>>both implementations of BeanELResolver (Glassfish, Tomcat) use this >>>construction during method invocation: >>> >>>ExpressionFactory exprFactory = ExpressionFactory.newInstance(); >>> >>>That newInstance() always involves FactoryFinder mechanism, callstack >>>then looks like : >>> >>>org.apache.catalina.loader.WebappClassLoader.findResourceInternal >>> org.apache.catalina.loader.WebappClassLoader.findResource >>> org.apache.catalina.loader.WebappClassLoader.getResourceAsStream >>> javax.el.FactoryFinder.find(String, String, Properties) >>> javax.el.ExpressionFactory.newInstance(Properties) >>> javax.el.ExpressionFactory.newInstance() >>> javax.el.BeanELResolver.invokeMethod(Method, Object, Object[]) >>> >>> >>>Always tries to locale factory implementation, that >>>means /META-INF/services reading! This is not problem in myfaces, but >>>users don't distinguish between JSF and EL well. >>> >>>Any ideas? >>> >>>Regards, >>> >>>Martin Kočí >>> >>>https://uel.dev.java.net/svn/uel/trunk/api/src/main/java/javax/el/BeanELResolver.java >>> >>> >>>http://svn.apache.org/viewvc/tomcat/trunk/java/javax/el/BeanELResolver.java >>> >>> >>> >>> >> >> >>-- >>Ivan >> > > >-- >Jakob Korherr > >blog: http://www.jakobk.com >twitter: http://twitter.com/jakobkorherr >work: http://www.irian.at >
