Coverage Report - org.apache.tapestry.script.UniqueToken
 
Classes in this File Line Coverage Branch Coverage Complexity
UniqueToken
0%
0/10
0%
0/2
2
 
 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 org.apache.hivemind.Location;
 18  
 import org.apache.tapestry.IRequestCycle;
 19  
 
 20  
 /**
 21  
  * Writes out its child tokens only the first time it executes
 22  
  * (with a given tag).  Uses
 23  
  * {@link org.apache.tapestry.IRequestCycle#setAttribute(String, Object)}
 24  
  * to identify whether a particular block has rendered yet.
 25  
  *
 26  
  * @author Howard Lewis Ship
 27  
  * @since 3.0
 28  
  */
 29  
 
 30  
 class UniqueToken extends AbstractToken
 31  
 {
 32  
     public UniqueToken(Location location)
 33  
     {
 34  0
         super(location);
 35  0
     }
 36  
 
 37  
     public void write(StringBuffer buffer, ScriptSession session)
 38  
     {
 39  0
         IRequestCycle cycle = session.getRequestCycle();
 40  
 
 41  0
         Location location = getLocation();
 42  0
         String tag = "<unique> " + location.toString();
 43  
 
 44  0
         if (cycle.getAttribute(tag) != null)
 45  0
             return;
 46  
 
 47  0
         cycle.setAttribute(tag, Boolean.TRUE);
 48  
 
 49  0
         writeChildren(buffer, session);
 50  0
     }
 51  
 
 52  
 }