resourcefactoryimpl.java

jsr170接口的java实现。是个apache的开源项目。

/*
 * 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.webdav.simple;

import org.apache.jackrabbit.webdav.DavException;
import org.apache.jackrabbit.webdav.DavMethods;
import org.apache.jackrabbit.webdav.DavResource;
import org.apache.jackrabbit.webdav.DavResourceFactory;
import org.apache.jackrabbit.webdav.DavResourceLocator;
import org.apache.jackrabbit.webdav.DavServletRequest;
import org.apache.jackrabbit.webdav.DavServletResponse;
import org.apache.jackrabbit.webdav.DavSession;
import org.apache.jackrabbit.webdav.lock.LockManager;

/**
 * ResourceFactoryImpl implements a simple DavResourceFactory
 */
public class ResourceFactoryImpl implements DavResourceFactory {

    private final LockManager lockMgr;
    private final ResourceConfig resourceConfig;

    /**
     * Create a new <code>ResourceFactory</code> that uses the given lock
     * manager and the default {@link ResourceConfig resource config}.
     *
     * @param lockMgr
     */
    public ResourceFactoryImpl(LockManager lockMgr) {
        this.lockMgr = lockMgr;
        this.resourceConfig = new ResourceConfig();
    }

    /**
     * Create a new <code>ResourceFactory</code> that uses the given lock
     * manager and resource filter.
     *
     * @param lockMgr
     * @param resourceConfig
     */
    public ResourceFactoryImpl(LockManager lockMgr, ResourceConfig resourceConfig) {
        this.lockMgr = lockMgr;
        this.resourceConfig = (resourceConfig != null) ? resourceConfig : new ResourceConfig();
    }

    /**
     * Create a new <code>DavResource</code> from the given locator and
     * request.
     *
     * @param locator
     * @param request
     * @param response
     * @return
     * @throws DavException
     * @see DavResourceFactory#createResource(DavResourceLocator,
     *      DavServletRequest, DavServletResponse)
     */
    public DavResource createResource(DavResourceLocator locator, DavServletRequest request,
                                      DavServletResponse response) throws DavException {
        DavResourceImpl resource = (DavResourceImpl)createResource(locator, request.getDavSession());
        if (DavMethods.isCreateRequest(request) && ! resource.exists()) {
            resource.setIsCollection(DavMethods.isCreateCollectionRequest(request));
        }
        return resource;
    }

    /**
     * Create a new <code>DavResource</code> from the given locator and webdav
     * session.
     *
     * @param locator
     * @param session
     * @return
     * @throws DavException
     * @see DavResourceFactory#createResource(DavResourceLocator, DavSession)
     */
    public DavResource createResource(DavResourceLocator locator, DavSession session) throws DavException {
        DavResourceImpl res = new DavResourceImpl(locator, this, session, resourceConfig);
        res.addLockManager(lockMgr);
        return res;
    }
}