| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.parse; |
| |
| import org.apache.commons.beanutils.MethodUtils; |
| import org.xml.sax.Attributes; |
| |
| /** |
| * Connects a child object to a parent object using a named method. The method |
| * takes two parameters: the name of the child object and the child object itself. |
| * The child object name is taken from an attribute. |
| * |
| * @author Howard Lewis Ship |
| * @version $Id$ |
| * @since 3.0 |
| * |
| **/ |
| |
| public class ConnectChildRule extends AbstractSpecificationRule |
| { |
| private String _methodName; |
| private String _attributeName; |
| |
| private String _attributeValue; |
| |
| public ConnectChildRule(String methodName, String attributeName) |
| { |
| _methodName = methodName; |
| _attributeName = attributeName; |
| } |
| |
| public void begin(String namespace, String name, Attributes attributes) throws Exception |
| { |
| _attributeValue = getValue(attributes, _attributeName); |
| |
| // Check for null? |
| } |
| |
| /** |
| * Performs the add. This is done in <code>end()</code> to ensure |
| * that the child object (on top of the stack) is fully initialized. |
| * |
| **/ |
| |
| public void end(String namespace, String name) throws Exception |
| { |
| Object child = digester.peek(); |
| Object parent = digester.peek(1); |
| |
| MethodUtils.invokeMethod(parent, _methodName, new Object[] { _attributeValue, child }); |
| |
| _attributeValue = null; |
| } |
| |
| } |