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From Mrakomor <mrak...@gmail.com>
Subject Problem with collection in select
Date Wed, 02 Sep 2009 12:00:20 GMT

Hello folks,

I wanted to use a Struts 2 select in the form. I wanted to populate the list
using filtered collection. If I use it without the filter, like this:

<s:select
name="depzad.dzRequest.contractList[%{#status.index}].selectedContract" 
   	listKey="contractNr" listValue="contractNr"							
list="depzad.dzZadostMat.contractList" />


it works just fine. In depzad.dzZadostMat.contractList is a list of the
contracts and contract numbers are in the select. 

If I use a filter, that compares a number, it works too: 
<s:select
name="depzad.dzRequest.contractList[%{#status.index}].selectedContract" 
   	listKey="contractNr" listValue="contractNr"							
list="depzad.dzZadostMat.contractList.{? #this.integerProperty>20}" />

"integerProperty" - there is a valid getter for the integerProperty in the
Contract class and the list I obtain is properly filtered. 

However if the property for the filtering is a String: 
<s:select
name="depzad.dzRequest.contractList[%{#status.index}].selectedContract" 
   	listKey="contractNr" listValue="contractNr"							
list="depzad.dzZadostMat.contractList.{? #this.stringProperty=='B'}" />

I receive an error message:
org.apache.struts2.StrutsException #8636967tag 'select', field 'list', name
'depzad.dzRequest.contractList[1].selectedContract': The requested list key
'depzad.dzRequest.contractList.{?#this.stringProperty=='B'}' could not be
resolved as a collection/array/map/enumeration/iterator type. Example:
people or people.{name} - [unknown location]

The public String getStringProperty() function exists in the Class, but it
is not called. What may be wrong?

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