Commons Digester example source code file (TestFactoryCreate.java)

This example Commons Digester source code file (TestFactoryCreate.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

arraylist, attribute, attribute, digester, digester, exception, exception, io, list, object, override, sax, string, stringreader, stringreader, throwexceptioncreaterule, util

The Commons Digester TestFactoryCreate.java source code

/* $Id: TestFactoryCreate.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;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import org.junit.Test;
import org.xml.sax.Attributes;

/**
 * Test case for factory create rules.
 *
 * @author Robert Burrell Donkin
 */

public class TestFactoryCreate {
        
    // --------------------------------------------------------------- Test cases
    
       
    @Test
    public void testPropagateException() throws Exception {
    
        // only used with this method
        class ThrowExceptionCreateRule extends AbstractObjectCreationFactory {
            @Override
            public Object createObject(Attributes attributes) throws Exception {
                throw new RuntimeException();
            }
        }   
        
        
        // now for the tests
        String xml = "<?xml version='1.0' ?>";
        
        // test default - which is to propagate the exception
        Digester digester = new Digester();
        digester.addFactoryCreate("root", new ThrowExceptionCreateRule());
        try {
        
            digester.parse(new StringReader(xml));
            fail("Exception not propagated from create rule (1)");
        
        } catch (Exception e) { 
            /* This is what's expected */ 
        }
        
        // test propagate exception
        digester = new Digester();
        digester.addFactoryCreate("root", new ThrowExceptionCreateRule(), false);
        try {
        
            digester.parse(new StringReader(xml));
            fail("Exception not propagated from create rule (1)");
        
        } catch (Exception e) { 
            /* This is what's expected */ 
        }
        
        // test don't propagate exception
        digester = new Digester();
        digester.addFactoryCreate("root", new ThrowExceptionCreateRule(), true);
        try {
        
            digester.parse(new StringReader(xml));
        
        } catch (Exception e) {
            // this shouldn't happen
            fail("Exception should not be propagated");
        }
    }

    @Test
    public void testFactoryCreateRule() throws Exception {
        tryVariations(true);
        tryVariations(false);
    }
    
    private void tryVariations(boolean propagateExceptions) throws Exception {
        
        
        // test passing object create
        Digester digester = new Digester();
        ObjectCreationFactoryTestImpl factory = new ObjectCreationFactoryTestImpl();
        digester.addFactoryCreate("root", factory, propagateExceptions);
        String xml = new String (
            "<?xml version='1.0' ?>");
        digester.parse(new StringReader(xml));
        
        assertEquals("Object create not called(1)[" + propagateExceptions + "]", factory.called , true);
        assertEquals(
                    "Attribute not passed (1)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("one"), 
                    "good");
        assertEquals(
                    "Attribute not passed (2)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("two"), 
                    "bad");
        assertEquals(
                    "Attribute not passed (3)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("three"), 
                    "ugly");   
                    
        digester = new Digester();
        digester.addFactoryCreate(
                                "root", 
                                "org.apache.commons.digester.ObjectCreationFactoryTestImpl",
                                propagateExceptions);
        digester.addSetNext("root", "add");
        xml = new String (
            "<?xml version='1.0' ?>");        
        List<ObjectCreationFactoryTestImpl> list = new ArrayList();
        digester.push(list);
        digester.parse(new StringReader(xml));
        
        assertEquals("List should contain only the factory object", list.size() , 1);
        factory = list.get(0);
        assertEquals("Object create not called(2)[" + propagateExceptions + "]", factory.called , true);
        assertEquals(
                    "Attribute not passed (4)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("one"), 
                    "good");
        assertEquals(
                    "Attribute not passed (5)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("two"), 
                    "bad");
        assertEquals(
                    "Attribute not passed (6)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("three"), 
                    "ugly");   
                    
    
        digester = new Digester();
        digester.addFactoryCreate(
                                "root", 
                                "org.apache.commons.digester.ObjectCreationFactoryTestImpl",
                                "override",
                                propagateExceptions);
        digester.addSetNext("root", "add");
        xml = new String (
            "<?xml version='1.0' ?>");        
        list = new ArrayList<ObjectCreationFactoryTestImpl>();
        digester.push(list);
        digester.parse(new StringReader(xml));
        
        assertEquals("List should contain only the factory object", list.size() , 1);
        factory = list.get(0);
        assertEquals("Object create not called(3)[" + propagateExceptions + "]", factory.called , true);
        assertEquals(
                    "Attribute not passed (7)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("one"), 
                    "good");
        assertEquals(
                    "Attribute not passed (8)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("two"), 
                    "bad");
        assertEquals(
                    "Attribute not passed (8)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("three"), 
                    "ugly");   
        
        digester = new Digester();
        digester.addFactoryCreate(
                                "root", 
                                "org.apache.commons.digester.ObjectCreationFactoryTestImpl",
                                "override",
                                propagateExceptions);
        digester.addSetNext("root", "add");
        xml = new String (
            "<?xml version='1.0' ?>");        
        list = new ArrayList<ObjectCreationFactoryTestImpl>();
        digester.push(list);
        digester.parse(new StringReader(xml));
        
        assertEquals("List should contain only the factory object", list.size() , 1);
        factory = list.get(0);
        assertEquals(
                    "Attribute Override Failed (1)", 
                    factory.getClass().getName() , 
                    "org.apache.commons.digester.OtherTestObjectCreationFactory");
        assertEquals("Object create not called(4)[" + propagateExceptions + "]", factory.called , true);
        assertEquals(
                    "Attribute not passed (10)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("one"), 
                    "good");
        assertEquals(
                    "Attribute not passed (11)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("two"), 
                    "bad");
        assertEquals(
                    "Attribute not passed (12)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("three"), 
                    "ugly");   
    
        digester = new Digester();
        digester.addFactoryCreate(
                                "root", 
                                ObjectCreationFactoryTestImpl.class,
                                "override",
                                propagateExceptions);
        digester.addSetNext("root", "add");
        xml = new String (
            "<?xml version='1.0' ?>");        
        list = new ArrayList<ObjectCreationFactoryTestImpl>();
        digester.push(list);
        digester.parse(new StringReader(xml));
        
        assertEquals("List should contain only the factory object", list.size() , 1);
        factory = list.get(0);
        assertEquals("Object create not called(5)[" + propagateExceptions + "]", factory.called , true);
        assertEquals(
                    "Attribute not passed (13)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("one"), 
                    "good");
        assertEquals(
                    "Attribute not passed (14)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("two"), 
                    "bad");
        assertEquals(
                    "Attribute not passed (15)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("three"), 
                    "ugly");   
        
        digester = new Digester();
        digester.addFactoryCreate(
                                "root", 
                                ObjectCreationFactoryTestImpl.class,
                                "override",
                                propagateExceptions);
        digester.addSetNext("root", "add");
        xml = new String (
            "<?xml version='1.0' ?>");        
        list = new ArrayList<ObjectCreationFactoryTestImpl>();
        digester.push(list);
        digester.parse(new StringReader(xml));
        
        assertEquals("List should contain only the factory object", list.size() , 1);
        factory = list.get(0);
        assertEquals(
                    "Attribute Override Failed (2)", 
                    factory.getClass().getName() , 
                    "org.apache.commons.digester.OtherTestObjectCreationFactory");
        assertEquals("Object create not called(6)[" + propagateExceptions + "]", factory.called , true);
        assertEquals(
                    "Attribute not passed (16)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("one"), 
                    "good");
        assertEquals(
                    "Attribute not passed (17)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("two"), 
                    "bad");
        assertEquals(
                    "Attribute not passed (18)[" + propagateExceptions + "]", 
                    factory.attributes.getValue("three"), 
                    "ugly");   
    }
}