Examples with LinkedListAtomSet fr.lirmm.graphik.graal.core.atomset.LinkedListAtomSet used on opensource projects

Example 6 with LinkedListAtomSet

use of fr.lirmm.graphik.graal.core.atomset.LinkedListAtomSet in project graal by graphik-team.

the class DlgpWriterTest method emptyAtomSet.

@Test
public void emptyAtomSet() throws IOException {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    DlgpWriter writer = new DlgpWriter(os);
    writer.write(new LinkedListAtomSet());
    writer.write(new LinkedListAtomSet());
    writer.flush();
    String s = new String(os.toByteArray(), "UTF-8");
    writer.close();
    Assert.assertFalse(s.contains("."));
}

Example 7 with LinkedListAtomSet

use of fr.lirmm.graphik.graal.core.atomset.LinkedListAtomSet in project graal by graphik-team.

the class OWL2Parser method removeUselessTopInBody.

private static InMemoryAtomSet removeUselessTopInBody(InMemoryAtomSet atomset) {
    InMemoryAtomSet newAtomset = new DefaultInMemoryGraphStore();
    CloseableIteratorWithoutException<Atom> it = atomset.iterator();
    InMemoryAtomSet toRemove = new LinkedListAtomSet();
    Atom a;
    while (it.hasNext()) {
        a = it.next();
        if (!a.getPredicate().equals(Predicate.TOP)) {
            newAtomset.add(a);
            toRemove.add(a);
        } else {
        }
    }
    atomset.removeAll(toRemove);
    // for each top predicate
    Set<Term> terms = newAtomset.getTerms();
    it = atomset.iterator();
    while (it.hasNext()) {
        a = it.next();
        if (!terms.contains(a.getTerm(0))) {
            newAtomset.add(a);
        }
    }
    return newAtomset;
}

Example 8 with LinkedListAtomSet

use of fr.lirmm.graphik.graal.core.atomset.LinkedListAtomSet in project graal by graphik-team.

the class HomomorphismTest method test4.

@Test
public void test4() throws HomomorphismException, IteratorException, AtomSetException {
    InMemoryAtomSet data = new DefaultInMemoryGraphStore();
    data.addAll(DlgpParser.parseAtomSet("p(a,b), q(b)."));
    Variable x = DefaultTermFactory.instance().createVariable("X");
    InMemoryAtomSet positivePart = new LinkedListAtomSet();
    positivePart.addAll(DlgpParser.parseAtomSet("p(a,X)."));
    positivePart.iterator().next().setTerm(1, x);
    InMemoryAtomSet negatedPart = new LinkedListAtomSet();
    negatedPart.addAll(DlgpParser.parseAtomSet("q(X)."));
    negatedPart.iterator().next().setTerm(0, x);
    DefaultConjunctiveQueryWithNegatedParts query = new DefaultConjunctiveQueryWithNegatedParts(positivePart, Collections.singletonList(negatedPart));
    BacktrackHomomorphismWithNegatedParts h = new BacktrackHomomorphismWithNegatedParts();
    CloseableIterator<Substitution> res = h.execute(query, data);
    Assert.assertFalse(res.hasNext());
    res.close();
}

Example 9 with LinkedListAtomSet

use of fr.lirmm.graphik.graal.core.atomset.LinkedListAtomSet in project graal by graphik-team.

the class HomomorphismTest method test3.

@Test
public void test3() throws HomomorphismException, IteratorException, AtomSetException {
    InMemoryAtomSet data = new DefaultInMemoryGraphStore();
    data.addAll(DlgpParser.parseAtomSet("p(a,b), q(b)."));
    InMemoryAtomSet positivePart = new LinkedListAtomSet();
    positivePart.addAll(DlgpParser.parseAtomSet("p(a,b)."));
    LinkedList<InMemoryAtomSet> parts = new LinkedList<InMemoryAtomSet>();
    InMemoryAtomSet negatedPart = new LinkedListAtomSet();
    negatedPart.addAll(DlgpParser.parseAtomSet("q(a)."));
    parts.add(negatedPart);
    negatedPart = new LinkedListAtomSet();
    negatedPart.addAll(DlgpParser.parseAtomSet("q(b)."));
    parts.add(negatedPart);
    DefaultConjunctiveQueryWithNegatedParts query = new DefaultConjunctiveQueryWithNegatedParts(positivePart, parts);
    BacktrackHomomorphismWithNegatedParts h = new BacktrackHomomorphismWithNegatedParts();
    CloseableIterator<Substitution> res = h.execute(query, data);
    Assert.assertFalse(res.hasNext());
    res.close();
}

Example 10 with LinkedListAtomSet

use of fr.lirmm.graphik.graal.core.atomset.LinkedListAtomSet in project graal by graphik-team.

the class HomomorphismTest method test6Compilation.

@Test
public void test6Compilation() throws HomomorphismException, IteratorException, AtomSetException {
    InMemoryAtomSet data = new DefaultInMemoryGraphStore();
    RuleSet rules = new LinkedListRuleSet();
    rules.add(DlgpParser.parseRule("r(X,Y) :- s(X,Y)."));
    RulesCompilation comp = new IDCompilation();
    comp.compile(rules.iterator());
    data.addAll(DlgpParser.parseAtomSet("p(a,b), q(b), p(a,c), s(a,d), q(d), s(a,e)."));
    Variable y = DefaultTermFactory.instance().createVariable("Y");
    Variable z = DefaultTermFactory.instance().createVariable("Z");
    InMemoryAtomSet positivePart = new LinkedListAtomSet();
    positivePart.addAll(DlgpParser.parseAtomSet("p(X,Y),r(X,Z)."));
    CloseableIteratorWithoutException<Atom> it = positivePart.iterator();
    it.next().setTerm(1, y);
    it.next().setTerm(1, z);
    LinkedList<InMemoryAtomSet> parts = new LinkedList<InMemoryAtomSet>();
    InMemoryAtomSet negatedPart = new LinkedListAtomSet();
    negatedPart.addAll(DlgpParser.parseAtomSet("q(Y)."));
    negatedPart.iterator().next().setTerm(0, y);
    parts.add(negatedPart);
    negatedPart = new LinkedListAtomSet();
    negatedPart.addAll(DlgpParser.parseAtomSet("q(Z)."));
    negatedPart.iterator().next().setTerm(0, z);
    parts.add(negatedPart);
    DefaultConjunctiveQueryWithNegatedParts query = new DefaultConjunctiveQueryWithNegatedParts(positivePart, parts);
    BacktrackHomomorphismWithNegatedParts h = new BacktrackHomomorphismWithNegatedParts();
    CloseableIterator<Substitution> res = h.execute(query, data, comp);
    Assert.assertTrue(res.hasNext());
    res.next();
    Assert.assertFalse(res.hasNext());
    res.close();
}