Question

I am trying to write a expression with the unified expression language in JSF that states that, if an image is not empty, then use it otherwise use a default one.

#{not empty image ? image : #{bean.directory}image.jpg}

The problem is the default one can be accessed only by calling a certain function “#{bean.directory}” to retrieve the directory. I am getting ERROR PARSING.

Any idea how to resolve this?

Answer 1

Your mistake is, that you nesting expressions.

<NEW_EL1>not empty image ? image : <NEW_EL2>bean.directory</END_EL2>image.jpg</END_EL2>

This is not supported.

Related to your expression:

#{empty image ? bean.directory : image}#{empty image ? 'image.jpg'}

Another example:

#{((fooBean.random % 4) == 0 ? 'completely divisible by 4' : 'not completely divisible by 4'}