/*
* 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.ByteArrayInputStream ;
import java.io.ByteArrayOutputStream ;
import org.apache.jena.atlas.json.JSON ;
import org.apache.jena.atlas.json.JsonObject ;
import org.apache.jena.atlas.junit.BaseTest ;
import org.apache.jena.atlas.lib.StrUtils ;
import org.apache.jena.riot.Lang ;
import org.apache.jena.riot.RDFDataMgr ;
import org.apache.jena.riot.RiotReader ;
import org.apache.jena.riot.lang.LangRIOT ;
import org.apache.jena.riot.system.StreamRDF ;
import org.apache.jena.riot.system.StreamRDFLib ;
import org.junit.Test ;
import com.hp.hpl.jena.graph.Graph ;
import com.hp.hpl.jena.graph.Node ;
import com.hp.hpl.jena.graph.NodeFactory ;
import com.hp.hpl.jena.graph.Triple ;
import com.hp.hpl.jena.sparql.graph.GraphFactory ;
import com.hp.hpl.jena.sparql.sse.SSE ;
public class TestRDFJSON extends BaseTest
{
@Test public void rdfjson_00()
{
// Empty graph
test ("(base <http://example/> (graph))") ;
}
@Test public void rdfjson_01()
{
test ("(base <http://example/> (graph (<s> <p> 1)))") ;
}
@Test public void rdfjson_02()
{
// Different subjects
test ("(base <http://example/> (graph (<s1> <p> 1)(<s> <p> 2)))") ;
}
@Test public void rdfjson_03()
{
// Same subject, different predicates
test ("(base <http://example/> (graph (<s> <p> 1)(<s> <q> 2)))") ;
}
@Test public void rdfjson_04()
{
// Same subject, same predicates
test ("(base <http://example/> (graph (<s> <p> 1)(<s> <p> 2)))") ;
}
@Test public void rdfjson_05()
{
// Multiple subjects
test ("(base <http://example/> (graph ",
"(<s> <p> 1)" ,
"(<s> <p> 2)" ,
"(<s1> <p> 2)" ,
"))") ;
}
@Test public void rdfjson_06()
{
// Blank nodes / subjects
test ("(base <http://example/> (graph ",
"(_:a <p> 1)" ,
"(_:a <p> 2)" ,
"(_:b <p> 3)" ,
"))") ;
}
@Test public void rdfjson_07()
{
// Shared blank node objects
test ("(base <http://example/> (graph ",
"(<s> <p> _:abc)" ,
"(<s> <p> 2)" ,
"(<s1> <p> _:abc)" ,
"))") ;
}
@Test public void rdfjson_08()
{
// Shared IRI objects
test ("(base <http://example/> (graph ",
"(<s> <p> <http://example.org/abc>)" ,
"(<s> <p> 2)" ,
"(<s1> <p> <http://example.org/abc>)" ,
"))") ;
}
@Test public void rdfjson_09()
{
// Shared ...
test ("(base <http://example/> (graph ",
"(_:s <p> <http://example.org/abc>)" ,
"(<http://example.org/abc> <p> _:s)" ,
"))") ;
}
@Test public void rdfjson_literals()
{
// Literals, various
test ("(base <http://example/> (graph ",
"(<s> <p> 'abc')",
"(<s> <p> 'abc'@en)",
"(<s> <p> 'abc'^^xsd:string)",
"(<s> <p> '1'^^xsd:integer)",
"(<s> <p> '1e+100'^^xsd:double)",
"(<s> <p> '1.05'^^xsd:decimal)",
"))") ;
}
@Test public void rdfjson_escapes()
{
Graph g = GraphFactory.createGraphMem();
Node s = NodeFactory.createAnon();
Node p = NodeFactory.createURI("http://predicate");
g.add(new Triple(s, p, NodeFactory.createLiteral("quote \" character")));
g.add(new Triple(s, p, NodeFactory.createLiteral("new \n\r lines")));
g.add(new Triple(s, p, NodeFactory.createLiteral("tab \t character")));
test(g);
}
private void test (String... strings)
{
String str = StrUtils.strjoinNL(strings) ;
Graph g = SSE.parseGraph(str) ;
test(g);
}
private void test (Graph g)
{
ByteArrayOutputStream bout = serializeAsJSON(g) ;
parseAsJSON(bout) ; // make sure valid JSON
Graph g2 = parseAsRDFJSON(bout) ;
assertTrue(g.isIsomorphicWith(g2)) ;
}
private ByteArrayOutputStream serializeAsJSON (Graph graph)
{
ByteArrayOutputStream bout = new ByteArrayOutputStream() ;
RDFDataMgr.write(bout, graph, Lang.RDFJSON) ;
return bout ;
}
private Graph parseAsRDFJSON (ByteArrayOutputStream bout)
{
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()) ;
Graph graph = GraphFactory.createGraphMem() ;
StreamRDF dest = StreamRDFLib.graph(graph) ;
LangRIOT parser = RiotReader.createParserRdfJson(bin, dest) ;
parser.parse() ;
return graph ;
}
private JsonObject parseAsJSON (ByteArrayOutputStream bout)
{
return JSON.parse(new ByteArrayInputStream(bout.toByteArray())) ;
}
}