/*
* 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.clerezza.platform.content.genericmetadata;
import java.util.Date;
import javax.ws.rs.core.MediaType;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;
import org.apache.clerezza.rdf.utils.GraphNode;
import org.apache.clerezza.rdf.metadata.MetaDataGenerator;
import org.apache.clerezza.rdf.core.LiteralFactory;
import org.apache.clerezza.rdf.core.TypedLiteral;
import org.apache.clerezza.rdf.ontologies.DCTERMS;
/**
* This class generates metadata about assets.
*
* @author tio
*/
@Component()
@Service(MetaDataGenerator.class)
public class GenericMetaDataGenerator implements MetaDataGenerator {
@Override
public void generate(GraphNode node, byte[] data, MediaType mediaType) {
TypedLiteral dateLiteral = LiteralFactory.getInstance()
.createTypedLiteral(new Date());
if(node.getObjects(DCTERMS.dateSubmitted).hasNext()) {
if(node.getObjects(DCTERMS.modified).hasNext()) {
node.deleteProperties(DCTERMS.modified);
}
node.addProperty(DCTERMS.modified, dateLiteral);
} else {
node.addProperty(DCTERMS.dateSubmitted, dateLiteral);
}
}
}