Commons Digester example source code file (TestInline.java)

This example Commons Digester source code file (TestInline.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons Digester tags/keywords

container, container, digester, digester, exception, l1, list, object, plugincreaterule, pluginrules, pluginrules, test, textlabel, textlabel, util

The Commons Digester TestInline.java source code

/* $Id: TestInline.java 992060 2010-09-02 19:09:47Z simonetripodi $
 *
 * 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.digester.plugins;

import static org.junit.Assert.*;

import java.util.List;

import org.apache.commons.digester.Digester;
import org.junit.Test;

/**
 * Test cases for declaration of plugin classes "inline" (ie by specifying
 * plugin-class).
 */

public class TestInline {

    // --------------------------------------------------------------- Test cases
    @Test
    public void testInlineDeclaration() throws Exception {
        // * tests that plugins can be specified by class, and that the
        //   correct class gets loaded.
        // * tests that autosetproperties works
        // * tests that multiple different classes can be loaded via the
        //   same plugin rule (ie at the same pattern).
        Digester digester = new Digester();
        PluginRules rc = new PluginRules();
        digester.setRules(rc);
        
        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, "test1.xml"));
        }
        catch(Exception e) {
            throw e;
        }
        
        Object child;
        List<Widget> children = root.getChildren();
        assertNotNull(children);
        assertEquals(2, children.size());
        
        child = children.get(0);
        assertNotNull(child);
        assertEquals(TextLabel.class, child.getClass());
        TextLabel label1 = (TextLabel) child;
        assertEquals("anonymous", label1.getId());
        assertEquals("1", label1.getLabel());
        
        child = children.get(1);
        assertNotNull(child);
        assertEquals(TextLabel.class, child.getClass());
        TextLabel label2 = (TextLabel) child;
        assertEquals("L1", label2.getId());
        assertEquals("2", label2.getLabel());
    }

    @Test
    public void testLeadingSlash() throws Exception {
        // Tests that PluginRules handles patterns with a leading slash.
        // 
        // This test doesn't really belong in this class. If a separate test 
        // case class is created for PluginRules, then this method should be
        // moved there.

        Digester digester = new Digester();
        PluginRules rc = new PluginRules();
        digester.setRules(rc);
        
        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, "test1.xml"));
        }
        catch(Exception e) {
            throw e;
        }
        
        Object child;
        List<Widget> children = root.getChildren();
        assertNotNull(children);
        assertEquals(2, children.size());
        
        child = children.get(0);
        assertNotNull(child);
        assertEquals(TextLabel.class, child.getClass());
        TextLabel label1 = (TextLabel) child;
        assertEquals("anonymous", label1.getId());
        assertEquals("1", label1.getLabel());
        
        child = children.get(1);
        assertNotNull(child);
        assertEquals(TextLabel.class, child.getClass());
        TextLabel label2 = (TextLabel) child;
        assertEquals("L1", label2.getId());
        assertEquals("2", label2.getLabel());
    }
    
}