TestTDBUnicode.java

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 * 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 dev;

import static org.junit.Assert.assertEquals;

import java.io.StringReader;
import java.nio.ByteBuffer;
import java.util.Iterator;

import org.apache.jena.atlas.lib.FileOps;
import org.apache.jena.graph.Node;
import org.apache.jena.graph.NodeFactory;
import org.apache.jena.query.Dataset;
import org.apache.jena.query.ReadWrite;
import org.apache.jena.riot.Lang;
import org.apache.jena.riot.RDFDataMgr;
import org.apache.jena.sparql.core.DatasetGraph;
import org.apache.jena.sparql.core.DatasetGraphFactory;
import org.apache.jena.sparql.core.Quad;
import org.apache.jena.tdb.TDBFactory;
import org.apache.jena.tdb.base.file.Location;
import org.apache.jena.tdb.lib.NodeLib;
import org.junit.Test;

public class TestTDBUnicode {

    private static final String str_literal = "Hello \\uDAE0 World";
    private static final String str_triple = "<s> <p> \"" + str_literal + "\" .";
    private static final String path = "target/tdb";
    
    @Test public void test_01() {
        DatasetGraph dsg2 = DatasetGraphFactory.createMem();
        RDFDataMgr.read(dsg2, new StringReader(str_triple), null, Lang.NTRIPLES);
        RDFDataMgr.read(dsg2, new StringReader(str_triple), null, Lang.TURTLE);
    }
    
    @Test public void test_02() {
        FileOps.clearDirectory( path );
        Location location = Location.create ( path );
        Dataset dataset = TDBFactory.createDataset ( location );
        dataset.begin ( ReadWrite.WRITE );
        try {
            DatasetGraph dsg = dataset.asDatasetGraph();
            DatasetGraph dsg2 = DatasetGraphFactory.createMem();
            RDFDataMgr.read(dsg2, new StringReader(str_triple), null, Lang.TURTLE);
            Iterator<Quad> quads = dsg2.find();
            while ( quads.hasNext() ) {
                Quad quad = quads.next();
                dsg.add(quad);
            }
            dataset.commit();
        } catch ( Exception e ) {
            e.printStackTrace(System.err);
            if ( dataset.isInTransaction() ) dataset.abort();
        } finally {
            dataset.end();
        }
        assertEquals ( 1, dataset.getDefaultModel().size() );
    }
    
    @Test public void test_03() {
        Dataset dataset = TDBFactory.createDataset ();
        dataset.begin ( ReadWrite.WRITE );
        try {
            DatasetGraph dsg = dataset.asDatasetGraph();
            DatasetGraph dsg2 = DatasetGraphFactory.createMem(); 
            RDFDataMgr.read(dsg2, new StringReader(str_triple), null, Lang.TURTLE);
            Iterator<Quad> quads = dsg2.find();
            while ( quads.hasNext() ) {
                Quad quad = quads.next();
                dsg.add(quad);
            }
            dataset.commit();
        } catch ( Exception e ) {
            e.printStackTrace(System.err);
            if ( dataset.isInTransaction() ) dataset.abort();
        } finally {
            dataset.end();
        }
        assertEquals ( 1, dataset.getDefaultModel().size() );
    }
    
    @Test public void test_04() {
        // see: http://www.unicode.org/charts/PDF/UD800.pdf
        String s = "\uDAE0";
        Node literal = NodeFactory.createLiteral(s); 
        ByteBuffer bb = NodeLib.encode(literal); 
        NodeLib.decode(bb);
    }
    
}