| /* |
| * 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.jackrabbit.servlet; |
| |
| import javax.jcr.Repository; |
| import javax.jcr.RepositoryException; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletContext; |
| |
| import org.apache.jackrabbit.commons.repository.RepositoryFactory; |
| |
| /** |
| * Factory that looks up a repository from the context of a given filter. |
| * <p> |
| * The default name of the repository attribute is |
| * "<code>javax.jcr.Repository</code>", but it can be changed by specifying |
| * an init parameter with the same name: |
| * <pre> |
| * <filter> |
| * <init-param> |
| * <param-name>javax.jcr.Repository</param-name> |
| * <param-value>my.repository.attribute</param-value> |
| * <description> |
| * This init parameter causes the repository to be looked up from |
| * the "my.repository.attribute" attribute instead of the default |
| * "javax.jcr.Repository". |
| * </description> |
| * </init-param> |
| * </filter> |
| * </pre> |
| * |
| * @since Apache Jackrabbit 1.6 |
| */ |
| public class FilterRepositoryFactory implements RepositoryFactory { |
| |
| /** |
| * Configuration of the filter whose context contains the repository. |
| */ |
| private final FilterConfig config; |
| |
| /** |
| * Creates a factory for looking up a repository from the context |
| * associated with the given filter configuration. |
| * |
| * @param config filter configuration |
| */ |
| public FilterRepositoryFactory(FilterConfig config) { |
| this.config = config; |
| } |
| |
| /** |
| * Looks up and returns a repository bound in the servlet context of |
| * the given filter. |
| * |
| * @return repository from servlet context |
| * @throws RepositoryException if the repository is not available |
| */ |
| public Repository getRepository() throws RepositoryException { |
| String name = config.getInitParameter(Repository.class.getName()); |
| if (name == null) { |
| name = Repository.class.getName(); |
| } |
| |
| ServletContext context = config.getServletContext(); |
| Object repository = context.getAttribute(name); |
| if (repository instanceof Repository) { |
| return (Repository) repository; |
| } else if (repository != null) { |
| throw new RepositoryException( |
| "Invalid repository: Attribute " + name |
| + " in servlet context " + context.getServletContextName() |
| + " is an instance of " + repository.getClass().getName()); |
| } else { |
| throw new RepositoryException( |
| "Repository not found: Attribute " + name |
| + " does not exist in servlet context " |
| + context.getServletContextName()); |
| } |
| } |
| |
| } |