    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
    015package org.apache.tapestry5.spring;
    016
    017import org.apache.tapestry5.http.TapestryFilter;
    018import org.apache.tapestry5.internal.spring.TapestryBeanFactory;
    019import org.apache.tapestry5.ioc.Registry;
    020import org.springframework.beans.factory.support.DefaultListableBeanFactory;
    021import 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 */
    029public 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}