when using jstl tag <c:if inside javascript i get error

Question

When I use the tag:

<c:if test="${comment.mediaObject.getClass().name == 'entities.persistent.Photo'}">

inside a JavaScript function in a jsp page I get the following error:

Syntax error on token "if", ( expected after this token

Under html code in .jsp page this works great but not when under JavaScript functions.

What I am trying to do is passing a list of Photos in JavaScript to then pass them to the initialize function that prints them in Google maps. But for that I need to know whether the mediaObjects is of type photo or else I don't do anything.

EDIT:

replacing getClass() with class actually stops the sintax error, although i get the following execution error:

message /MapRoutes.jsp (line: 113, column: 4) "${comment.mediaObject.class.name == 'entities.persistent.Photo'}" contains invalid expression(s): javax.el.ELException: Failed to parse the expression [${comment.mediaObject.class.name == 'entities.persistent.Photo'}]

Answer 1

Change comment.mediaObject.getClass().name to comment.mediaObject.class.name .

When your JSP is compiled it will translate to comment.getMediaObject().getClass().getName() .

The fact that it's inside a JavaScript block has nothing to do with the error.

EDIT to address the invalid expression:

A little searching shows that certain containers and/or EL specs require the following syntax due to the fact that class is a reserved keyword.

comment.mediaObject['class'].name

A final option is to add the following startup paramater. I'd recommend only doing this if nothing else works since it makes your application less portable.

-Dorg.apache.el.parser.SKIP_IDENTIFIER_CHECK=true