Win a copy of Mesos in Action this week in the Cloud/Virtualizaton forum!
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

Is re-evaluation possible in SimpleTags?

 
Musa Ali
Greenhorn
Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi!

Before JSP 2, there was an option in the custom tag libraries, "EVAL_BODY_AGAIN" and others like that which made the server re-evaluate the body of the tag after you change it. So you could write a code in a custom tag that outputs other custom tags. You could also use this for a sort of recursion.

I wish to know if this functionality is possible in SimpleTags. Is it?

I know that if your custom tag (which extends SimpleTagSupport) writes other custom tags, they are not evaluated. Not even the JSTL ones. I know that invoke() evaluates the body and writes the result to a supplied writer. One of my guesses was that if we change the body and call invoke again it would work. But SimpleTags store the body as a JspFragment and i could find no way to change it.

I would love to hear everyone's thoughts on this.
 
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic