| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.commons.digester3.plugins; |
| |
| import static org.junit.Assert.*; |
| |
| import java.util.List; |
| |
| import org.apache.commons.digester3.Digester; |
| import org.apache.commons.digester3.plugins.PluginCreateRule; |
| import org.apache.commons.digester3.plugins.PluginDeclarationRule; |
| import org.apache.commons.digester3.plugins.PluginRules; |
| import org.junit.Test; |
| |
| /** |
| * Test cases for plugins with custom rules which include PluginCreateRule instances, allowing recursive datastructures |
| * to be processed. |
| */ |
| |
| public class TestRecursion |
| { |
| |
| // --------------------------------------------------------------- Test cases |
| @Test |
| public void testRecursiveRules() |
| throws Exception |
| { |
| // * tests that a rule can declare custom PluginCreateRules |
| // that allow it to plug in instances of itself below |
| // itself. |
| |
| Digester digester = new Digester(); |
| PluginRules rc = new PluginRules(); |
| digester.setRules( rc ); |
| |
| PluginDeclarationRule pdr = new PluginDeclarationRule(); |
| digester.addRule( "*/plugin", pdr ); |
| |
| PluginCreateRule pcr = new PluginCreateRule( Widget.class ); |
| digester.addRule( "root/widget", pcr ); |
| digester.addSetNext( "root/widget", "addChild" ); |
| |
| Container root = new Container(); |
| digester.push( root ); |
| |
| try |
| { |
| digester.parse( Utils.getInputStream( this, "test6.xml" ) ); |
| } |
| catch ( Exception e ) |
| { |
| throw e; |
| } |
| |
| int nDescendants = countWidgets( root ); |
| assertEquals( 10, nDescendants ); |
| } |
| |
| private int countWidgets( Container c ) |
| { |
| List<Widget> l = c.getChildren(); |
| int sum = 0; |
| for ( Widget w : l ) |
| { |
| ++sum; |
| if ( w instanceof Container ) |
| { |
| sum += countWidgets( (Container) w ); |
| } |
| } |
| return sum; |
| } |
| } |