Great! I thought that tomcat and geronimo EL implementation are from
same source; But just now I'm looking in geronimo code and
expressionFactory instance is cached - I'll definitely try it, thanks!
Ivan píše v St 25. 08. 2010 v 22:54 +0800:
> 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
