| /* |
| * 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.jena.riot.writer; |
| |
| import java.io.OutputStream; |
| import java.io.Writer; |
| import java.util.Iterator; |
| |
| import org.apache.jena.atlas.io.IO; |
| import org.apache.jena.atlas.lib.CharSpace; |
| import static org.apache.jena.atlas.lib.CharSpace.*; |
| import org.apache.jena.graph.Graph; |
| import org.apache.jena.graph.Triple; |
| import org.apache.jena.riot.Lang; |
| import org.apache.jena.riot.system.PrefixMap; |
| import org.apache.jena.riot.system.StreamRDFOps; |
| import org.apache.jena.riot.system.StreamRDF; |
| import org.apache.jena.riot.system.StreamRDFLib; |
| import org.apache.jena.sparql.util.Context; |
| |
| public class NTriplesWriter extends WriterGraphRIOTBase { |
| public static void write(OutputStream out, Iterator<Triple> iter) { |
| write(out, iter, CharSpace.UTF8); |
| } |
| |
| public static void write(OutputStream out, Iterator<Triple> iter, CharSpace charSpace) { |
| StreamRDF s = StreamRDFLib.writer(out, charSpace); |
| write$(s, iter); |
| } |
| |
| public static void write(Writer out, Iterator<Triple> iter) { |
| write(out, iter, CharSpace.UTF8); |
| } |
| |
| public static void write(Writer out, Iterator<Triple> iter, CharSpace charSpace) { |
| StreamRDF s = StreamRDFLib.writer(out, charSpace); |
| write$(s, iter); |
| } |
| |
| private static void write$(StreamRDF s, Iterator<Triple> iter) { |
| s.start(); |
| StreamRDFOps.sendTriplesToStream(iter, s); |
| s.finish(); |
| } |
| |
| private final CharSpace charSpace; |
| |
| public NTriplesWriter() { |
| this(UTF8); |
| } |
| |
| public NTriplesWriter(CharSpace charSpace) { |
| this.charSpace = charSpace; |
| } |
| |
| @Override |
| public Lang getLang() { |
| return Lang.NTRIPLES; |
| } |
| |
| @Override |
| public void write(Writer out, Graph graph, PrefixMap prefixMap, String baseURI, Context context) { |
| Iterator<Triple> iter = graph.find(null, null, null); |
| if ( charSpace == UTF8 ) |
| write(out, iter); |
| else { |
| StreamRDF s = new WriterStreamRDFPlain(IO.wrap(out), ASCII); |
| write$(s, iter); |
| } |
| } |
| |
| @Override |
| public void write(OutputStream out, Graph graph, PrefixMap prefixMap, String baseURI, Context context) { |
| Iterator<Triple> iter = graph.find(null, null, null); |
| if ( charSpace == UTF8 ) |
| write(out, iter); |
| else { |
| StreamRDF s = new WriterStreamRDFPlain(IO.wrapASCII(out), ASCII); |
| write$(s, iter); |
| } |
| |
| } |
| } |