Examples with WHEN com.vaticle.typeql.lang.common.TypeQLToken.Schema.WHEN used on opensource projects

Example 1 with WHEN

use of com.vaticle.typeql.lang.common.TypeQLToken.Schema.WHEN in project grakn by graknlabs.

the class Rule method pruneThenResolvedTypes.

/**
 * Remove type hints in the `then` pattern that are not valid in the `when` pattern
 */
private void pruneThenResolvedTypes() {
    then.variables().stream().filter(variable -> variable.id().isName()).forEach(thenVar -> {
        Variable whenVar = when.variable(thenVar.id());
        thenVar.retainInferredTypes(whenVar.inferredTypes());
        if (thenVar.inferredTypes().isEmpty())
            then.setCoherent(false);
    });
}

Example 2 with WHEN

use of com.vaticle.typeql.lang.common.TypeQLToken.Schema.WHEN in project grakn by graknlabs.

the class Rule method whenPattern.

private Conjunction whenPattern(com.vaticle.typeql.lang.pattern.Conjunction<? extends Pattern> conjunction, com.vaticle.typeql.lang.pattern.variable.ThingVariable<?> then, LogicManager logicMgr) {
    Disjunction when = Disjunction.create(conjunction.normalise(), VariableRegistry.createFromThings(list(then)));
    assert when.conjunctions().size() == 1;
    if (iterate(when.conjunctions().get(0).negations()).filter(neg -> neg.disjunction().conjunctions().size() != 1).hasNext()) {
        throw TypeDBException.of(INVALID_NEGATION_CONTAINS_DISJUNCTION, getLabel());
    }
    logicMgr.typeInference().applyCombination(when);
    return when.conjunctions().get(0);
}