Examples with VarPattern ai.grakn.graql.VarPattern used on opensource projects

Example 31 with VarPattern

use of ai.grakn.graql.VarPattern in project grakn by graknlabs.

the class RelationshipConverter method pattern.

public Pattern pattern(Relationship concept) {
    VarPattern relationPattern = Graql.var();
    Set<Pattern> idPatterns = new HashSet<>();
    for (Map.Entry<Role, Set<Thing>> entry : concept.allRolePlayers().entrySet()) {
        for (Thing var : entry.getValue()) {
            Var rolePlayer = Graql.var();
            relationPattern = relationPattern.rel(Graql.label(entry.getKey().getLabel()), rolePlayer);
            idPatterns.add(rolePlayer.asUserDefined().id(var.getId()));
        }
    }
    relationPattern = relationPattern.isa(Graql.label(concept.type().getLabel()));
    Pattern pattern = relationPattern;
    for (Pattern idPattern : idPatterns) {
        pattern = pattern.and(idPattern);
    }
    return pattern;
}

Example 32 with VarPattern

use of ai.grakn.graql.VarPattern in project grakn by graknlabs.

the class PatternTest method whenConjunctionPassedVarAndNull_Throw.

@Test(expected = Exception.class)
public void whenConjunctionPassedVarAndNull_Throw() {
    VarPattern var = null;
    // noinspection ResultOfMethodCallIgnored,ConstantConditions
    and(var(), var);
}

Example 33 with VarPattern

use of ai.grakn.graql.VarPattern in project grakn by graknlabs.

the class PatternTest method whenDisjunctionPassedVarAndNull_Throw.

@Test(expected = Exception.class)
public void whenDisjunctionPassedVarAndNull_Throw() {
    VarPattern var = null;
    // noinspection ResultOfMethodCallIgnored,ConstantConditions
    or(var(), var);
}

Example 34 with VarPattern

use of ai.grakn.graql.VarPattern in project grakn by graknlabs.

the class PatternTest method whenNegationPassedNull_Throw.

@Test(expected = Exception.class)
public void whenNegationPassedNull_Throw() {
    VarPattern var = null;
    // noinspection ConstantConditions,ResultOfMethodCallIgnored
    neq(var);
}

Example 35 with VarPattern

use of ai.grakn.graql.VarPattern in project grakn by graknlabs.

the class MatchTest method whenReferringToImplicitRelationsAndRoles_DontHideResults.

@Test
public void whenReferringToImplicitRelationsAndRoles_DontHideResults() {
    VarPattern hasTitle = label(HAS.getLabel("title"));
    VarPattern titleOwner = label(HAS_OWNER.getLabel("title"));
    VarPattern titleValue = label(HAS_VALUE.getLabel("title"));
    Match hasQuery = qb.match(y.has("title", z));
    Match explicitQuery = qb.match(var().isa(hasTitle).rel(titleOwner, y).rel(titleValue, z));
    assertEquals(hasQuery.stream().collect(toSet()), explicitQuery.stream().collect(toSet()));
}