Custom Taglib problems - instead of a single instance per page, I have a single instance per applica

Discussion in 'Java' started by chris brat, May 9, 2006.

  1. chris brat

    chris brat Guest


    What is the correct expected behaviour when using a taglib regarding
    how many objects are created per page/application?

    More clearly, I created a custom tag (call it MyCustomTag) lib
    and am using it in a JSP page - I expected that for each request
    a new instance of the MyCustomTag class would be instantiated
    and all its instance variables would be initialized.

    However only one instance is being created (for multiple requests from
    different clients)
    and is being 'shared' between multiple pages (it seems to be a single
    instance used application wide).

    How do I force a single instance of this tag per page?

    chris brat, May 9, 2006
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  2. chris brat

    chris brat Guest

    For anyone who might have the same problem:

    I was using Tomcat 5.5 which seems to maintains a pool of instantiated
    Tag objects, from which it first retrieves any existing instance before
    creating a new instance - I think this is for performance improvements.

    This tag pool is then kept in the servlet context - which is why my one
    tag instance was available throughout the application.

    chris brat, May 10, 2006
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