Also, if we're talking about a JSP taglib tag (which it sounds like we are), something like this:
> inc= "<%= path %>/jsp/dd/inc/" isn't allowed. In fact, I'm kind of surprised that compiles. When an attribute is a rtexprvalue, the *whole* thing needs to be a runtime expression. You can't mix a runtime expression with static text as in the above. You'll need to rewrite the attribute like this: inc='<%= path + "/jsp/dd/inc" %>' -- Tim Moore / Blackboard Inc. / Software Engineer 1899 L Street, NW / 5th Floor / Washington, DC 20036 Phone 202-463-4860 ext. 258 / Fax 202-463-4863 > -----Original Message----- > From: Jeff [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, September 25, 2002 3:16 PM > To: Tomcat Users List > Subject: Re: Setting Tag Attribute Value > > > OK, quick question... is <%= path %> ***itself*** null, or it > simply being ---interpreted--- by Tomcat as null in the > context of a tag attribute? > > An easy way to check is to stick a copy somewhere inside a > html comment adjacent to the tag where you're using it so you > can launch the page and see for sure. For example... > > <!-- VALUE of path = '<%= path %>' --> > ... inc="<%= path %>/jsp/dd/inc" ... > > if <%= path %> is itself null and is itself supposed to be > set by another tag either wrapping it or coming earlier in > the page, it's probably a problem with that tag's TEI file. > > On the other hand, if <%= path %> is non-null, check the > tag's .tld file and make sure that the "inc" attribute has > <rtexprvalue>true</rtexprvalue> > > "rtexprvalue" tells the compiler whether it can save time and > hardcode the current value of <%= path %> at ***compile > time***, or whether it needs to stop and fetch the current > value of <%= path %> at ---runtime---. If rtexprvalue is > false, it's using path's value at compile time... which more > likely than not, is null. > > ----- Original Message ----- > From: "Sundar Chakravarthy" <[EMAIL PROTECTED]> > To: "Tomcat Users List" <[EMAIL PROTECTED]> > Sent: Wednesday, September 25, 2002 1:23 PM > Subject: Setting Tag Attribute Value > > > Hi, > > I am on Tomcat 4.0.x , jdk1.4,win2K. > > When I try to set a tag attribute value using > a jsp script varaible like below , > > inc= "<%= path %>/jsp/dd/inc/" > > the value of path shows up as null . Why ? > > Thanks > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
