Examples with IdPredicate ai.grakn.graql.internal.reasoner.atom.predicate.IdPredicate used on opensource projects

Example 1 with IdPredicate

use of ai.grakn.graql.internal.reasoner.atom.predicate.IdPredicate in project grakn by graknlabs.

the class ResourceAtom method hasEquivalentPredicatesWith.

@Override
boolean hasEquivalentPredicatesWith(Binary at) {
    if (!(at instanceof ResourceAtom && super.hasEquivalentPredicatesWith(at)))
        return false;
    ResourceAtom atom = (ResourceAtom) at;
    if (!hasMultiPredicateEquivalentWith(atom))
        return false;
    IdPredicate thisPredicate = this.getIdPredicate(getPredicateVariable());
    IdPredicate predicate = atom.getIdPredicate(atom.getPredicateVariable());
    return thisPredicate == null && predicate == null || thisPredicate != null && thisPredicate.isAlphaEquivalent(predicate);
}

Example 2 with IdPredicate

use of ai.grakn.graql.internal.reasoner.atom.predicate.IdPredicate in project grakn by graknlabs.

the class ResourceAtom method predicateBindingsAreEquivalent.

@Override
boolean predicateBindingsAreEquivalent(Binary at) {
    if (!(at instanceof ResourceAtom && super.predicateBindingsAreEquivalent(at)))
        return false;
    ResourceAtom atom = (ResourceAtom) at;
    if (!hasMultiPredicateEquivalentWith(atom))
        return false;
    IdPredicate thisPredicate = this.getIdPredicate(getPredicateVariable());
    IdPredicate predicate = atom.getIdPredicate(atom.getPredicateVariable());
    return (thisPredicate == null) == (predicate == null);
}

Example 3 with IdPredicate

use of ai.grakn.graql.internal.reasoner.atom.predicate.IdPredicate in project grakn by graknlabs.

the class HasAttributeProperty method mapToAtom.

@Override
public Atomic mapToAtom(VarPatternAdmin var, Set<VarPatternAdmin> vars, ReasonerQuery parent) {
    // NB: HasAttributeProperty always has (type) label specified
    Var varName = var.var().asUserDefined();
    Var relationVariable = relationship().var();
    Var attributeVariable = attribute().var().asUserDefined();
    Set<ValuePredicate> predicates = getValuePredicates(attributeVariable, attribute(), vars, parent);
    IsaProperty isaProp = attribute().getProperties(IsaProperty.class).findFirst().orElse(null);
    VarPatternAdmin typeVar = isaProp != null ? isaProp.type() : null;
    IdPredicate predicate = typeVar != null ? getIdPredicate(attributeVariable, typeVar, vars, parent) : null;
    ConceptId predicateId = predicate != null ? predicate.getPredicate() : null;
    // add resource atom
    VarPatternAdmin resVar = relationVariable.isUserDefinedName() ? varName.has(type(), attributeVariable, relationVariable).admin() : varName.has(type(), attributeVariable).admin();
    return ResourceAtom.create(resVar, attributeVariable, relationVariable, predicateId, predicates, parent);
}

Example 4 with IdPredicate

use of ai.grakn.graql.internal.reasoner.atom.predicate.IdPredicate in project grakn by graknlabs.

the class PlaysProperty method mapToAtom.

@Override
public Atomic mapToAtom(VarPatternAdmin var, Set<VarPatternAdmin> vars, ReasonerQuery parent) {
    Var varName = var.var().asUserDefined();
    VarPatternAdmin typeVar = this.role();
    Var typeVariable = typeVar.var().asUserDefined();
    IdPredicate predicate = getIdPredicate(typeVariable, typeVar, vars, parent);
    ConceptId predicateId = predicate == null ? null : predicate.getPredicate();
    return PlaysAtom.create(varName, typeVariable, predicateId, parent);
}

Example 5 with IdPredicate

use of ai.grakn.graql.internal.reasoner.atom.predicate.IdPredicate in project grakn by graknlabs.

the class RelationshipAtom method getRelationPlayerMappings.

/**
 * @param parentAtom reference atom defining the mapping
 * @param matchType type of match to be performed
 * @return set of possible COMPLETE mappings between this (child) and parent relation players
 */
private Set<List<Pair<RelationPlayer, RelationPlayer>>> getRelationPlayerMappings(RelationshipAtom parentAtom, UnifierComparison matchType) {
    Multimap<Role, RelationPlayer> childRoleRPMap = this.getRoleRelationPlayerMap();
    Map<Var, Type> childVarTypeMap = this.getParentQuery().getVarTypeMap();
    Map<Var, Type> parentVarTypeMap = parentAtom.getParentQuery().getVarTypeMap();
    // establish compatible castings for each parent casting
    List<Set<Pair<RelationPlayer, RelationPlayer>>> compatibleMappingsPerParentRP = new ArrayList<>();
    ReasonerQueryImpl childQuery = (ReasonerQueryImpl) getParentQuery();
    Set<Role> childRoles = childRoleRPMap.keySet();
    parentAtom.getRelationPlayers().stream().filter(prp -> prp.getRole().isPresent()).forEach(prp -> {
        VarPatternAdmin parentRolePattern = prp.getRole().orElse(null);
        if (parentRolePattern == null) {
            throw GraqlQueryException.rolePatternAbsent(this);
        }
        Label parentRoleLabel = parentRolePattern.getTypeLabel().orElse(null);
        if (parentRoleLabel != null) {
            Var parentRolePlayer = prp.getRolePlayer().var();
            Type parentType = parentVarTypeMap.get(parentRolePlayer);
            Set<Role> compatibleRoles = compatibleRoles(tx().getSchemaConcept(parentRoleLabel), parentType, childRoles);
            List<RelationPlayer> compatibleRelationPlayers = new ArrayList<>();
            compatibleRoles.stream().filter(childRoleRPMap::containsKey).forEach(role -> childRoleRPMap.get(role).stream().filter(crp -> {
                Var childVar = crp.getRolePlayer().var();
                Type childType = childVarTypeMap.get(childVar);
                return matchType.typePlayability(childQuery, childVar, parentType) && matchType.typeCompatibility(parentType, childType);
            }).filter(crp -> {
                IdPredicate parentId = parentAtom.getIdPredicate(prp.getRolePlayer().var());
                IdPredicate childId = this.getIdPredicate(crp.getRolePlayer().var());
                return matchType.atomicCompatibility(parentId, childId);
            }).filter(crp -> {
                ValuePredicate parentVP = parentAtom.getPredicate(prp.getRolePlayer().var(), ValuePredicate.class);
                ValuePredicate childVP = this.getPredicate(crp.getRolePlayer().var(), ValuePredicate.class);
                return matchType.atomicCompatibility(parentVP, childVP);
            }).forEach(compatibleRelationPlayers::add));
            if (!compatibleRelationPlayers.isEmpty()) {
                compatibleMappingsPerParentRP.add(compatibleRelationPlayers.stream().map(crp -> new Pair<>(crp, prp)).collect(Collectors.toSet()));
            }
        } else {
            compatibleMappingsPerParentRP.add(getRelationPlayers().stream().map(crp -> new Pair<>(crp, prp)).collect(Collectors.toSet()));
        }
    });
    return Sets.cartesianProduct(compatibleMappingsPerParentRP).stream().filter(list -> !list.isEmpty()).filter(list -> {
        List<RelationPlayer> listChildRps = list.stream().map(Pair::getKey).collect(Collectors.toList());
        // NB: this preserves cardinality instead of removing all occuring instances which is what we want
        return ReasonerUtils.subtract(listChildRps, this.getRelationPlayers()).isEmpty();
    }).filter(list -> {
        List<RelationPlayer> listParentRps = list.stream().map(Pair::getValue).collect(Collectors.toList());
        return listParentRps.containsAll(parentAtom.getRelationPlayers());
    }).collect(toSet());
}