Examples with FlattenedOptional org.apache.rya.indexing.external.matching.FlattenedOptional used on opensource projects

Example 1 with FlattenedOptional

use of org.apache.rya.indexing.external.matching.FlattenedOptional in project incubator-rya by apache.

the class FlattenedOptionalTest method testReOrderedBasicOptional.

@Test
public void testReOrderedBasicOptional() throws MalformedQueryException {
    String query = // 
    "" + // 
    "SELECT ?e ?c ?l" + // 
    "{" + // 
    "  ?e a ?c . " + // 
    "  OPTIONAL{?e <uri:talksTo> ?l } . " + // 
    "  ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l " + // 
    "}";
    SPARQLParser parser = new SPARQLParser();
    ParsedQuery pq = parser.parseQuery(query, null);
    System.out.println(pq.getTupleExpr());
    List<TupleExpr> joinArgs = getJoinArgs(pq.getTupleExpr(), new ArrayList<TupleExpr>());
    // System.out.println(joinArgs);
    FlattenedOptional optional = (FlattenedOptional) joinArgs.get(0);
    TupleExpr sp1 = joinArgs.get(1);
    TupleExpr sp2 = joinArgs.get(2);
    Assert.assertEquals(false, optional.canRemoveTuple(sp1));
    Assert.assertEquals(false, optional.canAddTuple(sp2));
}

Example 2 with FlattenedOptional

use of org.apache.rya.indexing.external.matching.FlattenedOptional in project incubator-rya by apache.

the class FlattenedOptionalTest method testEqualsAndHashCode.

@Test
public void testEqualsAndHashCode() throws MalformedQueryException {
    String query1 = // 
    "" + // 
    "SELECT ?e ?c ?l" + // 
    "{" + // 
    "  ?e <uri:worksAt> ?c . " + // 
    "  OPTIONAL{?e <uri:talksTo> ?l } . " + // 
    "  ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l " + // 
    "}";
    SPARQLParser parser = new SPARQLParser();
    ParsedQuery pq1 = parser.parseQuery(query1, null);
    List<TupleExpr> joinArgs1 = getJoinArgs(pq1.getTupleExpr(), new ArrayList<TupleExpr>());
    String query2 = // 
    "" + // 
    "SELECT ?e ?c ?l" + // 
    "{" + // 
    "  ?e a ?c . " + // 
    "  ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l " + // 
    "  OPTIONAL{?e <uri:talksTo> ?l } . " + // 
    "}";
    parser = new SPARQLParser();
    ParsedQuery pq2 = parser.parseQuery(query2, null);
    List<TupleExpr> joinArgs2 = getJoinArgs(pq2.getTupleExpr(), new ArrayList<TupleExpr>());
    FlattenedOptional optional1 = (FlattenedOptional) joinArgs1.get(0);
    FlattenedOptional optional2 = (FlattenedOptional) joinArgs2.get(0);
    System.out.println(optional1 + " and " + optional2);
    Assert.assertEquals(optional1, optional2);
    Assert.assertEquals(optional1.hashCode(), optional2.hashCode());
}

Example 3 with FlattenedOptional

use of org.apache.rya.indexing.external.matching.FlattenedOptional in project incubator-rya by apache.

the class FlattenedOptionalTest method testBasicOptional.

@Test
public void testBasicOptional() throws MalformedQueryException {
    String query = // 
    "" + // 
    "SELECT ?e ?c ?l" + // 
    "{" + // 
    "  ?e a ?c . " + // 
    "  ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l " + // 
    "  OPTIONAL{?e <uri:talksTo> ?l } . " + // 
    "}";
    SPARQLParser parser = new SPARQLParser();
    ParsedQuery pq = parser.parseQuery(query, null);
    List<TupleExpr> joinArgs = getJoinArgs(pq.getTupleExpr(), new ArrayList<TupleExpr>());
    FlattenedOptional optional = (FlattenedOptional) joinArgs.get(0);
    TupleExpr sp1 = joinArgs.get(1);
    TupleExpr sp2 = joinArgs.get(2);
    Assert.assertEquals(false, optional.canRemoveTuple(sp2));
    Assert.assertEquals(true, optional.canRemoveTuple(sp1));
// System.out.println(joinArgs);
}

Example 4 with FlattenedOptional

use of org.apache.rya.indexing.external.matching.FlattenedOptional in project incubator-rya by apache.

the class FlattenedOptionalTest method getJoinArgs.

private List<TupleExpr> getJoinArgs(TupleExpr tupleExpr, List<TupleExpr> joinArgs) {
    if (tupleExpr instanceof Projection) {
        Projection projection = (Projection) tupleExpr;
        getJoinArgs(projection.getArg(), joinArgs);
    } else if (tupleExpr instanceof Join) {
        Join join = (Join) tupleExpr;
        getJoinArgs(join.getLeftArg(), joinArgs);
        getJoinArgs(join.getRightArg(), joinArgs);
    } else if (tupleExpr instanceof LeftJoin) {
        LeftJoin lj = (LeftJoin) tupleExpr;
        joinArgs.add(new FlattenedOptional(lj));
        getJoinArgs(lj.getLeftArg(), joinArgs);
    } else if (tupleExpr instanceof Filter) {
        getJoinArgs(((Filter) tupleExpr).getArg(), joinArgs);
    } else {
        joinArgs.add(tupleExpr);
    }
    return joinArgs;
}