common/src/main/java/org/apache/abdera2/common/protocol/MediaRequestProcessor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  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.  For additional information regarding
 * copyright in this work, please see the NOTICE file in the top level
 * directory of this distribution.
 */
package org.apache.abdera2.common.protocol;


/**
 * {@link org.apache.AtompubRequestProcessor.protocol.server.RequestProcessor} implementation which processes requests for media
 * documents.
 */
@SuppressWarnings("unchecked")
public class MediaRequestProcessor
    implements RequestProcessor {

    public <S extends ResponseContext>S process(
        RequestContext context,
        WorkspaceManager workspaceManager,
        CollectionAdapter collectionAdapter) {
        if (collectionAdapter == null) {
            return (S)ProviderHelper.notfound(context);
        } else {
            return this.processMedia(context, collectionAdapter);
        }
    }

    public <S extends ResponseContext>S processMedia(
        RequestContext context, 
        CollectionAdapter adapter) {
        String method = context.getMethod();
        if (adapter instanceof MediaCollectionAdapter) {
            MediaCollectionAdapter mcadapter = (MediaCollectionAdapter)adapter;
            if (method.equalsIgnoreCase("GET")) {
                return mcadapter.getMedia(context);
            } else if (method.equalsIgnoreCase("POST")) {
                return mcadapter.postMedia(context);
            } else if (method.equalsIgnoreCase("PUT")) {
                return mcadapter.putMedia(context);
            } else if (method.equalsIgnoreCase("DELETE")) {
                return mcadapter.deleteMedia(context);
            } else if (method.equalsIgnoreCase("HEAD")) {
                return mcadapter.headMedia(context);
            } else if (method.equalsIgnoreCase("OPTIONS")) {
                return mcadapter.optionsMedia(context);
            } else if (method.equalsIgnoreCase("PATCH") && mcadapter instanceof PatchMediaAdapter) {
                return ((PatchMediaAdapter)mcadapter).patchMedia(context);
            } else {
                return null;
            }
        } else {
            return (S)ProviderHelper.notallowed(context);
        }
    }
}