org.topbraid.shacl.util.ModelPrinter Maven / Gradle / Ivy
/*
* Licensed 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.
*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*/
package org.topbraid.shacl.util;
import java.io.StringWriter;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.RDFWriter;
import org.apache.jena.util.FileUtils;
/**
* A singleton that takes a Jena Model and prints it into a string.
* Used to create comparable renderings of Models produced by test cases.
*
* @author Holger Knublauch
*/
public class ModelPrinter {
private static ModelPrinter singleton = new ModelPrinter();
public static ModelPrinter get() {
return singleton;
}
public static void set(ModelPrinter value) {
singleton = value;
}
protected RDFWriter createRDFWriter(Model model) {
return model.getWriter(FileUtils.langTurtle);
}
public String print(Model model) {
StringWriter writer = new StringWriter();
RDFWriter w = createRDFWriter(model);
w.write(model, writer, "http://example.org/random");
return writer.toString();
}
}