/*
* 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.tuscany.sca.binding.atom;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import org.apache.abdera.Abdera;
import org.apache.abdera.factory.Factory;
import org.apache.abdera.i18n.iri.IRI;
import org.apache.abdera.model.Content;
import org.apache.abdera.model.Entry;
import org.apache.abdera.model.Feed;
import org.apache.tuscany.sca.binding.atom.collection.MediaCollection;
import org.apache.tuscany.sca.binding.atom.collection.NotFoundException;
import org.oasisopen.sca.annotation.Scope;
/**
*
* @version $Rev: 823050 $ $Date: 2009-10-08 07:05:32 +0100 (Thu, 08 Oct 2009) $
*/
@Scope("COMPOSITE")
public class MediaCollectionImpl implements MediaCollection {
private final Abdera abdera = new Abdera();
private Map<String, Entry> entries = new HashMap<String, Entry>();
private Map<String, String> mediaFiles = new HashMap<String, String>();
public Date lastModified = new Date();
public Entry post(Entry entry) {
//System.out.println(">>> MediaCollectionImpl.post entry=" + entry.getTitle());
if(!("Exception_Test".equalsIgnoreCase(entry.getTitle())))
{
String id = "urn:uuid:customer-" + UUID.randomUUID().toString();
entry.setId(id);
entry.addLink("" + id, "edit");
entry.addLink("" + id, "alternate");
Date now = new Date();
entry.setUpdated(now);
lastModified = now;
entries.put(id, entry);
//System.out.println(">>> MediaCollectionImpl.post return id=" + id);
return entry;
}
else
{
throw new IllegalArgumentException("Exception in Post method");
}
}
public Entry get(String id) {
//System.out.println(">>> MediaCollectionImpl.get id=" + id);
return entries.get(id);
}
public void put(String id, Entry entry) throws NotFoundException {
//System.out.println(">>> MediaCollectionImpl.put id=" + id + " entry=" + entry.getTitle());
if(entries.containsKey(id)){
Date now = new Date();
entry.setUpdated(now);
lastModified = now;
entries.put(id, entry);
}
else {
throw new NotFoundException();
}
}
public void delete(String id) throws NotFoundException {
//System.out.println(">>> MediaCollectionImpl.delete id=" + id);
if(entries.containsKey(id)){
entries.remove(id);
lastModified = new Date();
}
else {
throw new NotFoundException();
}
}
public Feed getFeed() {
//System.out.println(">>> MediaCollectionImpl.getFeed");
Feed feed = this.abdera.getFactory().newFeed();
feed.setId("customers" + this.hashCode() ); // provide unique id for feed instance.
feed.setTitle("customers");
feed.setSubtitle("This is a sample feed");
feed.setUpdated(lastModified);
feed.addLink("");
feed.addLink("", "self");
for (Entry entry : entries.values()) {
feed.addEntry(entry);
}
return feed;
}
public Feed query(String queryString) {
//System.out.println(">>> MediaCollectionImpl.query collection " + queryString);
return getFeed();
}
// This method used for testing.
protected void testPut(String value) {
String id = "urn:uuid:customer-" + UUID.randomUUID().toString();
Entry entry = abdera.getFactory().newEntry();
entry.setId(id);
entry.setTitle("customer " + value);
Content content = this.abdera.getFactory().newContent();
content.setContentType(Content.Type.TEXT);
content.setValue(value);
entry.setContentElement(content);
entry.addLink("" + id, "edit");
entry.addLink("" + id, "alternate");
entry.setUpdated(new Date());
entries.put(id, entry);
System.out.println(">>> id=" + id);
}
// MediaCollection role
public Entry postMedia(String title, String slug, String contentType, InputStream media) {
//System.out.println(">>> MediaCollectionImpl.postMedia title=" + title + ", slug=" + slug + ", contentType=" + contentType );
Factory factory = abdera.getFactory();
Entry entry = factory.newEntry();
// Must provide entry to media as per Atom Pub spec (http://tools.ietf.org/html/rfc5023#section-9.6)
// <?xml version="1.0"?>
// <entry xmlns="http://www.w3.org/2005/Atom">
// <title>The Beach</title> (REQUIRED)
// <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id> (REQUIRED)
// <updated>2005-10-07T17:17:08Z</updated>
// <summary type="text" /> (REQUIRED, OPTIONAL to populate
// <content type="image/png" src="http://media.example.org/the_beach.png"/>
// <link rel="edit-media" href="http://media.example.org/edit/the_beach.png" />
// <link rel="edit" href="http://example.org/media/edit/the_beach.atom" />
// </entry>
// Normalize title
entry.setTitle( title );
String normalTitle = title.replace( " ", "_" );
String hostURL = "http://media.example.org/";
int lastDelimiterPos = contentType != null ? contentType.lastIndexOf( "/" ) : -1;
String extension = "";
if ( lastDelimiterPos != -1 ) {
extension = contentType.substring( lastDelimiterPos + 1 );
} else {
extension = contentType;
}
long mediaLength = -1;
try {
mediaLength = media.skip( Long.MAX_VALUE );
} catch ( IOException e ){}
// A true implementation would store the media to a repository, e.g. file system.
// This implementation record's the id and the location.
String id = "urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a-" + mediaFiles.size();
String reposLocation = hostURL + "edit/" + normalTitle;
mediaFiles.put( id, reposLocation );
// Build entry for media link.
entry.setUpdated( new Date() );
entry.setId( id );
// Convention. Return header properties as key values.
entry.setSummary( "Content-Type=" + contentType + ",Content-Length=" + mediaLength );
entry.setContent( new IRI( hostURL + normalTitle + "." + extension ), contentType );
entry.addLink( reposLocation + ".atom", "edit" );
entry.addLink( reposLocation + "." + extension, "edit-media" );
return entry;
}
public void putMedia(String id, String contentType, InputStream media) throws NotFoundException {
//System.out.println(">>> MediaCollectionImpl.putMedia id=" + id + ", contentType=" + contentType );
// Must responsd with success or not found as per Atom Pub spec (http://tools.ietf.org/html/rfc5023#section-9.6)
// Body is null.
if ( !id.endsWith( "0" ) )
throw new NotFoundException( "Media at id=" + id + " not found." );
// A true implementation would update the media in the media repository.
}
}