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From "dion gillard (JIRA)" <commons-...@jakarta.apache.org>
Subject [jira] Commented: (JELLY-164) New Tag for parallel iteration
Date Fri, 19 Nov 2004 00:34:29 GMT
     [ http://nagoya.apache.org/jira/browse/JELLY-164?page=comments#action_55643 ]
     
dion gillard commented on JELLY-164:
------------------------------------

I'm not sure this should be in the core package....

> 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
>  Attachments: IterateTag.java, TestIterateTag.java, patchIterateTag.txt, testIterateTag.jelly
>
> 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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