Coverage report

  %line %branch
org.apache.commons.jelly.tags.define.ExtendTag
82% 
100% 

 1   
 /*
 2   
  * Copyright 1999-2002,2004 The Apache Software Foundation.
 3   
  *
 4   
  * Licensed under the Apache License, Version 2.0 (the "License");
 5   
  * you may not use this file except in compliance with the License.
 6   
  * You may obtain a copy of the License at
 7   
  *
 8   
  *      http://www.apache.org/licenses/LICENSE-2.0
 9   
  *
 10   
  * Unless required by applicable law or agreed to in writing, software
 11   
  * distributed under the License is distributed on an "AS IS" BASIS,
 12   
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13   
  * See the License for the specific language governing permissions and
 14   
  * limitations under the License.
 15   
  */
 16   
 package org.apache.commons.jelly.tags.define;
 17   
 
 18   
 import org.apache.commons.jelly.JellyTagException;
 19   
 import org.apache.commons.jelly.Script;
 20   
 import org.apache.commons.jelly.XMLOutput;
 21   
 import org.apache.commons.jelly.impl.DynamicTagLibrary;
 22   
 
 23   
 /**
 24   
  * <extend> is used to extend a dynamic tag defined in an inherited
 25   
  * dynamic tag library
 26   
  * <p/>
 27   
  *
 28   
  * @author <a href="mailto:tima@intalio.com">Tim Anderson</a>
 29   
  * @version $Revision: 155420 $
 30   
  * @see SuperTag
 31   
  */
 32   
 public class ExtendTag extends DefineTagSupport {
 33   
 
 34   
     private String name;
 35   
 
 36   
     private Script superScript;
 37   
 
 38  9 
     public ExtendTag() {
 39  9 
     }
 40   
 
 41   
     // Tag interface
 42   
     //-------------------------------------------------------------------------
 43   
     public void doTag(XMLOutput output) throws JellyTagException {
 44  9 
         DynamicTagLibrary library = getTagLibrary();
 45  9 
         DynamicTagLibrary owner = library.find(getName());
 46  9 
         if (owner == null) {
 47  0 
             throw new JellyTagException(
 48   
                 "Cannot extend " + getName() + ": dynamic tag not defined");
 49   
         }
 50  9 
         if (owner == library) {
 51   
             // disallow extension of tags defined within the same tag
 52   
             // library
 53  0 
             throw new JellyTagException("Cannot extend " + getName() +
 54   
                                      ": dynamic tag defined locally");
 55   
         }
 56  9 
         superScript = owner.getDynamicTag(name);
 57  9 
         if (superScript == null) {
 58   
             // tag doesn't define a script - disallow this for the moment.
 59  0 
             throw new JellyTagException("Cannot extend " + getName() +
 60   
                                      ": tag is not a dynamic tag");
 61   
         }
 62   
 
 63  9 
         owner.registerDynamicTag(getName() , getBody());
 64  9 
     }
 65   
 
 66   
     // Properties
 67   
     //-------------------------------------------------------------------------
 68   
 
 69   
     /**
 70   
      * @return the name of the tag to create
 71   
      */
 72   
     public String getName() {
 73  18 
         return name;
 74   
     }
 75   
 
 76   
     /**
 77   
      * Sets the name of the tag to create
 78   
      */
 79   
     public void setName(String name) {
 80  9 
         this.name = name;
 81  9 
     }
 82   
 
 83   
     /**
 84   
      * Returns the parent implementation of this tag
 85   
      */
 86   
     public Script getSuperScript() {
 87  9 
         return superScript;
 88   
     }
 89   
 }
 90   
 

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