/*
* 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.openjena.riot;
import java.io.InputStream ;
import java.io.OutputStream ;
import java.util.Iterator ;
import org.apache.jena.atlas.data.SerializationFactory ;
import org.apache.jena.atlas.lib.Sink ;
import org.apache.jena.riot.lang.LabelToNode ;
import org.apache.jena.riot.lang.LangNQuads ;
import org.apache.jena.riot.lang.LangNTriples ;
import org.apache.jena.riot.out.NodeToLabel ;
import org.apache.jena.riot.out.SinkQuadOutput ;
import org.apache.jena.riot.out.SinkTripleOutput ;
import org.apache.jena.riot.system.IRIResolver ;
import org.apache.jena.riot.system.ParserProfileBase ;
import org.apache.jena.riot.system.Prologue ;
import org.apache.jena.riot.tokens.Tokenizer ;
import org.apache.jena.riot.tokens.TokenizerFactory ;
import com.hp.hpl.jena.graph.Triple ;
import com.hp.hpl.jena.sparql.core.Quad ;
import com.hp.hpl.jena.sparql.engine.binding.Binding ;
import com.hp.hpl.jena.sparql.engine.binding.BindingInputStream ;
import com.hp.hpl.jena.sparql.engine.binding.BindingOutputStream ;
public class SerializationFactoryFinder
{
public static SerializationFactory<Binding> bindingSerializationFactory()
{
return new SerializationFactory<Binding>()
{
@Override
public Sink<Binding> createSerializer(OutputStream out)
{
return new BindingOutputStream(out);
}
@Override
public Iterator<Binding> createDeserializer(InputStream in)
{
return new BindingInputStream(in);
}
@Override
public long getEstimatedMemorySize(Binding item)
{
// TODO traverse the binding, and add up the variable + node sizes + object overhead
return 0 ;
}
};
}
public static SerializationFactory<Triple> tripleSerializationFactory()
{
return new SerializationFactory<Triple>()
{
@Override
public Sink<Triple> createSerializer(OutputStream out)
{
return new SinkTripleOutput(out, null, NodeToLabel.createBNodeByLabelEncoded()) ;
}
@Override
public Iterator<Triple> createDeserializer(InputStream in)
{
Tokenizer tokenizer = TokenizerFactory.makeTokenizerASCII(in) ;
ParserProfileBase profile = new ParserProfileBase(new Prologue(null, IRIResolver.createNoResolve()), null, LabelToNode.createUseLabelEncoded()) ;
LangNTriples parser = new LangNTriples(tokenizer, profile, null) ;
return parser ;
}
@Override
public long getEstimatedMemorySize(Triple item)
{
// TODO
return 0 ;
}
};
}
public static SerializationFactory<Quad> quadSerializationFactory()
{
return new SerializationFactory<Quad>()
{
@Override
public Sink<Quad> createSerializer(OutputStream out)
{
return new SinkQuadOutput(out, null, NodeToLabel.createBNodeByLabelEncoded()) ;
}
@Override
public Iterator<Quad> createDeserializer(InputStream in)
{
Tokenizer tokenizer = TokenizerFactory.makeTokenizerASCII(in) ;
ParserProfileBase profile = new ParserProfileBase(new Prologue(null, IRIResolver.createNoResolve()), null, LabelToNode.createUseLabelEncoded()) ;
LangNQuads parser = new LangNQuads(tokenizer, profile, null) ;
return parser ;
}
@Override
public long getEstimatedMemorySize(Quad item)
{
// TODO
return 0 ;
}
};
}
}