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

Example 76 with Match

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

the class MatchTest method whenQueryingForXSubY_ReturnOnlyTypes.

@Test
public void whenQueryingForXSubY_ReturnOnlyTypes() {
    Match query = qb.match(x.sub(y));
    assertThat(query, variable(x, everyItem(not(isInstance()))));
    assertThat(query, variable(y, everyItem(not(isInstance()))));
}

Example 77 with Match

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

the class MatchTest method testMatchKey.

@Test
public void testMatchKey() {
    Match query = qb.match(x.key("name"));
    assertThat(query, variable(x, contains(genre)));
}

Example 78 with Match

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

the class MatchTest method testSchemaQuery.

@Test
public void testSchemaQuery() {
    Var type = var("type");
    Match query = qb.match(type.plays("character-being-played"));
    assertThat(query, variable(type, containsInAnyOrder(character, person)));
}

Example 79 with Match

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

the class MatchTest method whenQueryingForSameRoleTwiceWhenItIsPlayedOnce_ReturnNoResults.

@Test
public void whenQueryingForSameRoleTwiceWhenItIsPlayedOnce_ReturnNoResults() {
    Match query = qb.match(var().rel("actor", x).rel("actor", y));
    assertThat(query, emptyIterable());
}

Example 80 with Match

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

the class MatchTest method testMatchAllDistinctPairsOfACertainType.

@Test
public void testMatchAllDistinctPairsOfACertainType() {
    int numConcepts = (int) qb.match(x.isa("movie")).stream().count();
    Match pairs = qb.match(x.isa("movie"), y.isa("movie"), x.neq(y));
    assertThat(pairs, iterableWithSize(numConcepts * (numConcepts - 1)));
}