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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.xbean.spring.context;
18  
19  import java.io.IOException;
20  import java.util.Collections;
21  import java.util.List;
22  
23  import org.apache.xbean.spring.context.SpringApplicationContext;
24  import org.apache.xbean.spring.context.impl.XBeanHelper;
25  import org.springframework.beans.factory.support.DefaultListableBeanFactory;
26  import org.springframework.beans.factory.xml.ResourceEntityResolver;
27  import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
28  
29  /**
30   * An XBean version of the regular Spring class to provide improved XML
31   * handling.
32   * 
33   * @author James Strachan
34   * @author Dain Sundstrom
35   * @version $Id$
36   * @since 2.0
37   */
38  public class XmlWebApplicationContext extends org.springframework.web.context.support.XmlWebApplicationContext implements SpringApplicationContext {
39      private final List xmlPreprocessors;
40  
41      /**
42       * Creates a XmlWebApplicationContext which loads the configuration from the a web application context.
43       */
44      public XmlWebApplicationContext() {
45          this.xmlPreprocessors = Collections.EMPTY_LIST;
46      }
47  
48      /**
49       * Creates a XmlWebApplicationContext which loads the configuration from the a web application context.
50       * @param xmlPreprocessors the SpringXmlPreprocessors to apply before passing the xml to Spring for processing
51       */
52      public XmlWebApplicationContext(List xmlPreprocessors) {
53          this.xmlPreprocessors = xmlPreprocessors;
54      }
55  
56      /**
57       * {@inheritDoc}
58       */
59      protected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory) throws IOException {
60          // Create a new XmlBeanDefinitionReader for the given BeanFactory.
61          XmlBeanDefinitionReader beanDefinitionReader = XBeanHelper.createBeanDefinitionReader(this, beanFactory, xmlPreprocessors);
62  
63          // Configure the bean definition reader with this context's
64          // resource loading environment.
65          beanDefinitionReader.setResourceLoader(this);
66          beanDefinitionReader.setEntityResolver(new ResourceEntityResolver(this));
67  
68          // Allow a subclass to provide custom initialization of the reader,
69          // then proceed with actually loading the bean definitions.
70          initBeanDefinitionReader(beanDefinitionReader);
71          loadBeanDefinitions(beanDefinitionReader);
72      }
73      
74  }