001    // Copyright 2008, 2009, 2010 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.spring;
016    
017    import org.apache.tapestry5.TapestryFilter;
018    import org.apache.tapestry5.internal.spring.TapestryBeanFactory;
019    import org.apache.tapestry5.ioc.Registry;
020    import org.springframework.beans.factory.support.DefaultListableBeanFactory;
021    import org.springframework.web.context.support.XmlWebApplicationContext;
022    
023    /**
024     * Extension of Spring's {@link org.springframework.web.context.support.XmlWebApplicationContext} that includes hooks to
025     * resolve some injections into Spring beans as Tapestry services. When using the Tapestry/Spring Integration Library,
026     * this class (or a subclass) must be the configured context class.  If not specified, this  class is the default
027     * context class.
028     */
029    public class TapestryApplicationContext extends XmlWebApplicationContext
030    {
031        @Override
032        protected DefaultListableBeanFactory createBeanFactory()
033        {
034            Registry registry = (Registry) getServletContext().getAttribute(TapestryFilter.REGISTRY_CONTEXT_NAME);
035    
036            if (registry == null)
037                throw new IllegalStateException(
038                        "Expected a Tapestry IoC Registry to be stored in the ServletContext, but the attribute was null.");
039    
040            return new TapestryBeanFactory(getInternalParentBeanFactory(), registry);
041        }
042    }