I'm not sure what is wrong. I used ExpressionEvaluatorManager (not ExpressionUtil) to write Struts-EL, so you could inspect that code to look for examples.
Ask about enabling aspects of Struts logging in struts-user. It uses commons-logging, so you should be able to set up a logging.properties file with a higher debug level than the default. -----Original Message----- From: Lionel PASQUIER [mailto:[EMAIL PROTECTED] Sent: Friday, March 05, 2004 1:21 AM To: Tag Libraries Users List Subject: RE: using JSTL 1.0.5 ExpressionEvaluatorManager for custom tags Hello Karr, > You said that the bean "labels" is a java.util.List. > However, you also > said "table being the String ...". The error message, Well, I should have been more precise: the table String is actually "${labels}", or at least I believe it is: it is the String set by setTable(String) corresponding to the parameter "table" of the "selectitem" tag: <mytags:selectitem table="${labels}" index="${iteratecount}" item="item"> So I thought that ${labels} should expand through ExpressionUtil.evalNotNull into the List behind the bean "labels". Am I wrong? > Also note that your "c:forEach" is putting the iterated item into > "iterateCount", but I think you meant that to be the loop counter, > which yes indeed I was talking about the counter, not the item. Since foreach has only begin and end parameter, it seems it stores an Integer in var. Well at least this part works in my tests. My real problem is about the expand of ${labels} that leads to the error I stated previously. PS: any idea about my log problem? maybe I should ask that in another mail... Lionel > -----Original Message----- > From: Lionel PASQUIER [mailto:[EMAIL PROTECTED] > Sent: Thursday, March 04, 2004 11:58 AM > To: [EMAIL PROTECTED] > Subject: using JSTL 1.0.5 ExpressionEvaluatorManager for custom tags > > > Hello, > > I am willing to create custom tags that have the expression evaluation > of the JSTL 1.0.5. I am using tomcat 4, JDK1.4, thus cannot switch to > JSTL1.1 . > > I found the > org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager > class that seems to be pretty cool. So I made my tags use it, but > without success. In my case I have a tag like: <c:forEach begin="${0}" > end="${labelssize - 1}" var="iteratecount"> > <mytags:selectitem table="${labels}" index="${iteratecount}" > item="item"> </c:forEach> > > where the bean "labels" contains a java.util.List . > selectitem is supposed to return in the bean named "item" the > Object at > index ${iteratecount} of labels. > > So in the java code I put: > Object object = ExpressionUtil.evalNotNull("SelectItem", > "table", table, > List.class, this, pageContext); *table being the String set > by parameter > table of cours* > > which, unfortunatly returns an error: > "An error occurred while evaluating custom action attribute > "table" with > value "labels": Attempt to convert String "labels" to type > "java.util.List", but there is no PropertyEditor for that > type (null) " > > Isn't ExpressionUtil.evalNotNull not supposed to returned the Object > found behind the bean of resulting parsed String? > > Maybe the > org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager is > not supposed to be used for custom tags? Is there a howto about this? > > I have also another question, but this might not be the best mailing > list to ask this: I am using taglibs with tomcat and struts. But I > have a lot of logs that never show up anywhere :p (such as the > taglib is not > found, throws an error, or struts does not find the action, etc...). > Could you suggest me a link or two to help me figure out how to > configure the stuff correctly? > > Sorry if these questions have been asked many times already, > but I could > not find a suitable google answer... > > Lionel > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
