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List:       tapestry-user
Subject:    Temporary objects in OGNL
From:       Kaspar Fischer <fischerk () inf ! ethz ! ch>
Date:       2007-12-29 13:53:29
Message-ID: 9FB2EF70-E459-4E15-AA97-8380B670F895 () inf ! ethz ! ch
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Hi!

My Tapestry markup quite often contains repetitions like this:

  <span jwcid="@If"  
condition="ognl:components.table.tableRow.getProperty('title')! 
=null&&components.table.tableRow.getProperty('title').length()>0">
   <span jwcid="@Insert"  
value="ognl:components.table.tableRow.getProperty('title')"></span>
  </span>
  <span jwcid="@Else" key="untitled-document"/>

Is there an easy way to assign the result of a complicated (and  
potentially
expensive) OGNL expression to a temporary object and reuse this later?

Something like:

   <span jwcid="@Remember"  
value="ognl:components.table.tableRow.getProperty('title')" name="that">
     <span jwcid="@If" condition="ognl:that!=null&&that.length()>0">
       ...

Or is there another trick I've overseen?

Thanks,
Kaspar


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