001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Thierry Delprat
018 *     Gagnavarslan ehf
019 */
020package org.nuxeo.ecm.webdav.backend;
021
022import javax.servlet.http.HttpServletRequest;
023
024import org.nuxeo.ecm.core.api.CoreSession;
025import org.nuxeo.ecm.webengine.WebEngine;
026import org.nuxeo.ecm.webengine.model.WebContext;
027
028public abstract class AbstractBackendFactory implements BackendFactory {
029
030    @Override
031    public Backend getBackend(String path, HttpServletRequest request) {
032        if (request == null) {
033            throw new NullPointerException("null request");
034        }
035        // create backend from WebEngine session
036        WebContext webContext = WebEngine.getActiveContext();
037        if (webContext == null) {
038            throw new NullPointerException("null WebContext");
039        }
040        CoreSession session = webContext.getCoreSession();
041        if (session == null) {
042            throw new NullPointerException("null CoreSession");
043        }
044        Backend backend = createRootBackend(session);
045        return backend.getBackend(path);
046    }
047
048    public abstract Backend createRootBackend(CoreSession session);
049
050}