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From "Marc DeXeT (JIRA)" <commons-...@jakarta.apache.org>
Subject [jira] Créée: (JELLY-164) New Tag for parallel iteration
Date Thu, 18 Nov 2004 17:14:24 GMT
New Tag for parallel iteration
------------------------------

         Key: JELLY-164
         URL: http://nagoya.apache.org/jira/browse/JELLY-164
     Project: jelly
        Type: New Feature
  Components: core / taglib.core  
    Versions: 1.0-beta-5    
 Environment: JDK 1.4_02 Windows XP
    Reporter: Marc DeXeT
    Priority: Minor


IterateTag is like org.apache.commons.jelly.tags.core.ForEachTag but can iterate over several
collections. Where org.apache.commons.jelly.tags.core.ForEachTag iterate over one collection
and set Value in one variable like : 
 <forEach var="oneVar" items="oneCollection">
    <do something value="${oneVar}"/>
 </forEach>
 
IterateTag is like : 

 <iterate var="var_1;var_2;...;var_P" items="Collection_1;Collection_2;....;Collection_P">
    <do something value="${var_1} ${var_2} ${var_3}"/>
 </iterate>
 
Each Collection points at next element at the same time.

Over the n iteration, for j = 1 to P : var_j = Collection_j.get(n);
IterateTag stop on the first ended collection, so n = Min( Collection_1.size(), ..., Collection_P.size());

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