001/* 002 * Licensed to DuraSpace under one or more contributor license agreements. 003 * See the NOTICE file distributed with this work for additional information 004 * regarding copyright ownership. 005 * 006 * DuraSpace licenses this file to you under the Apache License, 007 * Version 2.0 (the "License"); you may not use this file except in 008 * compliance with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.fcrepo.event.serialization; 019 020import java.io.ByteArrayOutputStream; 021import java.io.UnsupportedEncodingException; 022 023import org.apache.jena.rdf.model.Model; 024import org.fcrepo.kernel.api.exception.RepositoryRuntimeException; 025import org.fcrepo.kernel.api.observer.FedoraEvent; 026 027/** 028 * Serialize a FedoraEvent as Turtle 029 * @author acoburn 030 * @since 6/16/16 031 */ 032public class TurtleSerializer implements EventSerializer { 033 034 /** 035 * Serialize a FedoraEvent in RDF using Turtle syntax 036 * @param evt the Fedora event 037 * @return a string of RDF, using Turtle syntax 038 */ 039 @Override 040 public String serialize(final FedoraEvent evt) { 041 try { 042 final Model model = EventSerializer.toModel(evt); 043 final ByteArrayOutputStream out = new ByteArrayOutputStream(); 044 model.write(out, "TTL"); 045 return out.toString("UTF-8"); 046 } catch (final UnsupportedEncodingException ex) { 047 throw new RepositoryRuntimeException(ex); 048 } 049 } 050}