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* 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
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* copyright in this work, please see the NOTICE file in the top level
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package org.apache.abdera.examples.appserver.custom;
import org.apache.abdera.protocol.server.CollectionAdapter;
import org.apache.abdera.protocol.server.Filter;
import org.apache.abdera.protocol.server.FilterChain;
import org.apache.abdera.protocol.server.RequestContext;
import org.apache.abdera.protocol.server.ResponseContext;
import org.apache.abdera.protocol.server.TargetType;
import org.apache.abdera.protocol.server.context.RequestContextWrapper;
import org.apache.abdera.protocol.server.impl.AbstractWorkspaceProvider;
import org.apache.abdera.protocol.server.impl.RegexTargetResolver;
import org.apache.abdera.protocol.server.impl.SimpleWorkspaceInfo;
import org.apache.abdera.protocol.server.impl.TemplateTargetBuilder;
public class CustomProvider extends AbstractWorkspaceProvider {
private final SimpleAdapter adapter;
public CustomProvider() {
// Create the adapter that will handle all of the requests processed by this provider
this.adapter = new SimpleAdapter();
// The target resolver provides the URL path mappings
super.setTargetResolver(new RegexTargetResolver().setPattern("/atom(\\?[^#]*)?", TargetType.TYPE_SERVICE)
.setPattern("/atom/([^/#?]+);categories", TargetType.TYPE_CATEGORIES, "collection")
.setPattern("/atom/([^/#?;]+)(\\?[^#]*)?", TargetType.TYPE_COLLECTION, "collection")
.setPattern("/atom/([^/#?]+)/([^/#?]+)(\\?[^#]*)?", TargetType.TYPE_ENTRY, "collection", "entry"));
// The target builder is used to construct url's for the various targets
setTargetBuilder(new TemplateTargetBuilder().setTemplate(TargetType.TYPE_SERVICE, "{target_base}/atom")
.setTemplate(TargetType.TYPE_COLLECTION,
"{target_base}/atom/{collection}{-opt|?|q,c,s,p,l,i,o}{-join|&|q,c,s,p,l,i,o}")
.setTemplate(TargetType.TYPE_CATEGORIES, "{target_base}/atom/{collection};categories")
.setTemplate(TargetType.TYPE_ENTRY, "{target_base}/atom/{collection}/{entry}"));
// Add a Workspace descriptor so the provider can generate an atompub service document
SimpleWorkspaceInfo workspace = new SimpleWorkspaceInfo();
workspace.setTitle("A Simple Workspace");
workspace.addCollection(adapter);
addWorkspace(workspace);
// Add one of more Filters to be invoked prior to invoking the Provider
addFilter(new SimpleFilter());
}
public CollectionAdapter getCollectionAdapter(RequestContext request) {
return adapter;
}
public class SimpleFilter implements Filter {
public ResponseContext filter(RequestContext request, FilterChain chain) {
RequestContextWrapper rcw = new RequestContextWrapper(request);
rcw.setAttribute("offset", 10);
rcw.setAttribute("count", 10);
return chain.next(rcw);
}
}
}