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