/*
* #!
* Ontopia Classify
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed 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 net.ontopia.topicmaps.classify;
import java.io.IOException;
import java.io.ByteArrayOutputStream;
import java.util.Collections;
import org.xml.sax.SAXException;
import net.ontopia.utils.OntopiaRuntimeException;
import net.ontopia.xml.PrettyPrinter;
import net.ontopia.topicmaps.core.TopicIF;
import net.ontopia.topicmaps.xml.XTMFragmentExporter;
/**
* INTERNAL: Classifier plugin which produces content from the topic
* itself.
*/
public class TopicContentPlugin implements ClassifyPluginIF {
public boolean isClassifiable(TopicIF topic) {
return true; // sure, we can do this for any topic
}
public ClassifiableContentIF getClassifiableContent(TopicIF topic) {
return new TopicAsContent(topic);
}
// ----- INTERNAL CLASS
public static class TopicAsContent implements ClassifiableContentIF {
private TopicIF topic;
public TopicAsContent(TopicIF topic) {
this.topic = topic;
}
public String getIdentifier() {
return topic.getObjectId();
}
public byte[] getContent() {
try {
ByteArrayOutputStream out = new ByteArrayOutputStream();
PrettyPrinter pp = new PrettyPrinter(out);
XTMFragmentExporter exporter = new XTMFragmentExporter();
exporter.exportAll(Collections.singleton(topic).iterator(), pp);
pp.endDocument();
return out.toByteArray();
} catch (SAXException e) {
throw new OntopiaRuntimeException(e);
} catch (IOException e) {
throw new OntopiaRuntimeException(e);
}
}
}
}