Coverage Report - org.apache.tapestry.script.ForeachToken
 
Classes in this File Line Coverage Branch Coverage Complexity
ForeachToken
0%
0/17
0%
0/8
3
 
 1  
 // Copyright 2004, 2005 The Apache Software Foundation
 2  
 //
 3  
 // Licensed under the Apache License, Version 2.0 (the "License");
 4  
 // you may not use this file except in compliance with the License.
 5  
 // You may obtain a copy of the License at
 6  
 //
 7  
 //     http://www.apache.org/licenses/LICENSE-2.0
 8  
 //
 9  
 // Unless required by applicable law or agreed to in writing, software
 10  
 // distributed under the License is distributed on an "AS IS" BASIS,
 11  
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12  
 // See the License for the specific language governing permissions and
 13  
 // limitations under the License.
 14  
 
 15  
 package org.apache.tapestry.script;
 16  
 
 17  
 import java.util.Iterator;
 18  
 import java.util.Map;
 19  
 
 20  
 import org.apache.hivemind.Location;
 21  
 
 22  
 /**
 23  
  * A looping operator, modeled after the Foreach component. It takes as its
 24  
  * source as property and iterates through the values, updating a symbol on each
 25  
  * pass.
 26  
  * <p>
 27  
  * As of 3.0, the index attribute has been added to foreach to keep track of the
 28  
  * current index of the iterating collection.
 29  
  * </p>
 30  
  * 
 31  
  * @author Howard Lewis Ship, Harish Krishnaswamy
 32  
  * @since 1.0.1
 33  
  */
 34  
 
 35  
 class ForeachToken extends AbstractToken
 36  
 {
 37  
 
 38  
     private String _key;
 39  
 
 40  
     private String _index;
 41  
 
 42  
     private String _expression;
 43  
 
 44  
     ForeachToken(String key, String index, String expression, Location location)
 45  
     {
 46  0
         super(location);
 47  
 
 48  0
         _key = key;
 49  0
         _index = index;
 50  0
         _expression = expression;
 51  0
     }
 52  
 
 53  
     public void write(StringBuffer buffer, ScriptSession session)
 54  
     {
 55  0
         Iterator i = (Iterator) session.evaluate(_expression, Iterator.class);
 56  
 
 57  0
         if (i == null) return;
 58  
 
 59  0
         Map symbols = session.getSymbols();
 60  
 
 61  0
         int index = 0;
 62  
 
 63  0
         while(i.hasNext())
 64  
         {
 65  0
             Object newValue = i.next();
 66  
 
 67  0
             symbols.put(_key, newValue);
 68  
 
 69  0
             if (_index != null) symbols.put(_index, String.valueOf(index));
 70  
 
 71  0
             writeChildren(buffer, session);
 72  
 
 73  0
             index++;
 74  0
         }
 75  
 
 76  
         // We leave the last value as a symbol; don't know if that's
 77  
         // good or bad.
 78  0
     }
 79  
 }