001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.xbean.spring.context;
018    
019    import java.io.IOException;
020    import java.util.Collections;
021    import java.util.List;
022    
023    import org.apache.xbean.spring.context.SpringApplicationContext;
024    import org.apache.xbean.spring.context.impl.XBeanHelper;
025    import org.springframework.beans.factory.support.DefaultListableBeanFactory;
026    import org.springframework.beans.factory.xml.ResourceEntityResolver;
027    import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
028    
029    /**
030     * An XBean version of the regular Spring class to provide improved XML
031     * handling.
032     * 
033     * @author James Strachan
034     * @author Dain Sundstrom
035     * @version $Id$
036     * @since 2.0
037     */
038    public class XmlWebApplicationContext extends org.springframework.web.context.support.XmlWebApplicationContext implements SpringApplicationContext {
039        private final List xmlPreprocessors;
040    
041        /**
042         * Creates a XmlWebApplicationContext which loads the configuration from the a web application context.
043         */
044        public XmlWebApplicationContext() {
045            this.xmlPreprocessors = Collections.EMPTY_LIST;
046        }
047    
048        /**
049         * Creates a XmlWebApplicationContext which loads the configuration from the a web application context.
050         * @param xmlPreprocessors the SpringXmlPreprocessors to apply before passing the xml to Spring for processing
051         */
052        public XmlWebApplicationContext(List xmlPreprocessors) {
053            this.xmlPreprocessors = xmlPreprocessors;
054        }
055    
056        /**
057         * {@inheritDoc}
058         */
059        protected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory) throws IOException {
060            // Create a new XmlBeanDefinitionReader for the given BeanFactory.
061            XmlBeanDefinitionReader beanDefinitionReader = XBeanHelper.createBeanDefinitionReader(this, beanFactory, xmlPreprocessors);
062    
063            // Configure the bean definition reader with this context's
064            // resource loading environment.
065            beanDefinitionReader.setResourceLoader(this);
066            beanDefinitionReader.setEntityResolver(new ResourceEntityResolver(this));
067    
068            // Allow a subclass to provide custom initialization of the reader,
069            // then proceed with actually loading the bean definitions.
070            initBeanDefinitionReader(beanDefinitionReader);
071            loadBeanDefinitions(beanDefinitionReader);
072        }
073        
074    }