Examples with PrefixMap org.apache.jena.riot.system.PrefixMap used on opensource projects

Example 1 with PrefixMap

use of org.apache.jena.riot.system.PrefixMap in project jena by apache.

the class ExJsonLD method write.

/**
     * Write RDF data as JSON-LD.
     * 
     * To get more control about the output,
     * we have to use a mechanism provided by jena to pass information
     * to the writing process (cf. org.apache.jena.riot.WriterDatasetRIOT and the "Context" mechanism).
     * For that, we have to create a WriterDatasetRIOT (a one-time use object)
     * and we pass a "Context" object (not to be confused with the "@context" in JSON-LD) as argument to its write method
     * 
     * @param out
     * @param f RDFFormat of the output, eg. RDFFormat.JSONLD_COMPACT_PRETTY
     * @param g the data that we want to output as JSON-LD
     * @param ctx the object that allows to control the writing process (a set of parameters)
     */
void write(OutputStream out, DatasetGraph g, RDFFormat f, Context ctx) {
    // create a WriterDatasetRIOT with the RDFFormat
    WriterDatasetRIOT w = RDFDataMgr.createDatasetWriter(f);
    PrefixMap pm = RiotLib.prefixMap(g);
    String base = null;
    w.write(out, g, pm, base, ctx);
}

Example 2 with PrefixMap

use of org.apache.jena.riot.system.PrefixMap in project jena by apache.

the class BinRDF method protocolToStream.

/**
     * Decode the contents of the TProtocol and send to the {@link StreamRDF}.
     * @param protocol TProtocol
     * @param dest Sink
     */
public static void protocolToStream(TProtocol protocol, StreamRDF dest) {
    PrefixMap pmap = PrefixMapFactory.create();
    final Thrift2StreamRDF s = new Thrift2StreamRDF(pmap, dest);
    dest.start();
    // ** Java8
    //apply(protocol, z -> TRDF.visit(z, s)) ;
    applyVisitor(protocol, s);
    dest.finish();
// No need to flush - we read from the protocol ; 
}

Example 3 with PrefixMap

use of org.apache.jena.riot.system.PrefixMap in project jena by apache.

the class TestPrefixLib method expand_2.

@Test
public void expand_2() {
    PrefixMap prefixes = create();
    prefixes.add(pref1, "http://example.net/ns#");
    String x2 = PrefixLib.expand(prefixes, "pref1z:abc");
    assertNull(x2);
}

Example 4 with PrefixMap

use of org.apache.jena.riot.system.PrefixMap in project jena by apache.

the class TestPrefixLib method abbrev_2.

@Test
public void abbrev_2() {
    PrefixMap prefixes = create();
    prefixes.add(pref1, "http://example.net/ns#");
    Pair<String, String> x = PrefixLib.abbrev(prefixes, "http://other/ns#xyz");
    assertNull(x);
}

Example 5 with PrefixMap

use of org.apache.jena.riot.system.PrefixMap in project jena by apache.

the class TestPrefixLib method expand_1.

@Test
public void expand_1() {
    PrefixMap prefixes = create();
    prefixes.add(pref1, "http://example.net/ns#");
    String x = PrefixLib.expand(prefixes, "pref1:abc");
    assertEquals("http://example.net/ns#abc", x);
    String x2 = PrefixLib.expand(prefixes, "pref1z:abc");
    assertNull(x2);
}