Examples with Label ai.grakn.concept.Label used on opensource projects

Example 66 with Label

use of ai.grakn.concept.Label in project grakn by graknlabs.

the class RelationshipAtom method rewriteWithVariableRoles.

/**
 * if any {@link Role} variable of the parent is user defined rewrite ALL {@link Role} variables to user defined (otherwise unification is problematic)
 * @param parentAtom parent atom that triggers rewrite
 * @return new relation atom with user defined {@link Role} variables if necessary or this
 */
private RelationshipAtom rewriteWithVariableRoles(Atom parentAtom) {
    if (!parentAtom.requiresRoleExpansion())
        return this;
    VarPattern relVar = getPattern().admin().getProperty(IsaProperty.class).map(prop -> getVarName().isa(prop.type())).orElse(getVarName());
    for (RelationPlayer rp : getRelationPlayers()) {
        VarPatternAdmin rolePattern = rp.getRole().orElse(null);
        if (rolePattern != null) {
            Var roleVar = rolePattern.var();
            Label roleLabel = rolePattern.getTypeLabel().orElse(null);
            relVar = relVar.rel(roleVar.asUserDefined().label(roleLabel), rp.getRolePlayer());
        } else {
            relVar = relVar.rel(rp.getRolePlayer());
        }
    }
    return create(relVar.admin(), getPredicateVariable(), getTypeId(), getParentQuery());
}

Example 67 with Label

use of ai.grakn.concept.Label in project grakn by graknlabs.

the class RelationshipAtom method inferRoles.

/**
 * attempt to infer role types of this relation and return a fresh relationship with inferred role types
 * @return either this if nothing/no roles can be inferred or fresh relation with inferred role types
 */
private RelationshipAtom inferRoles(Answer sub) {
    // return if all roles known and non-meta
    List<Role> explicitRoles = getExplicitRoles().collect(Collectors.toList());
    Map<Var, Type> varTypeMap = getParentQuery().getVarTypeMap(sub);
    boolean allRolesMeta = explicitRoles.stream().allMatch(role -> Schema.MetaSchema.isMetaLabel(role.getLabel()));
    boolean roleRecomputationViable = allRolesMeta && (!sub.isEmpty() || !Sets.intersection(varTypeMap.keySet(), getRolePlayers()).isEmpty());
    if (explicitRoles.size() == getRelationPlayers().size() && !roleRecomputationViable)
        return this;
    GraknTx graph = getParentQuery().tx();
    Role metaRole = graph.admin().getMetaRole();
    List<RelationPlayer> allocatedRelationPlayers = new ArrayList<>();
    RelationshipType relType = getSchemaConcept() != null ? getSchemaConcept().asRelationshipType() : null;
    // explicit role types from castings
    List<RelationPlayer> inferredRelationPlayers = new ArrayList<>();
    getRelationPlayers().forEach(rp -> {
        Var varName = rp.getRolePlayer().var();
        VarPatternAdmin rolePattern = rp.getRole().orElse(null);
        if (rolePattern != null) {
            Label roleLabel = rolePattern.getTypeLabel().orElse(null);
            // allocate if variable role or if label non meta
            if (roleLabel == null || !Schema.MetaSchema.isMetaLabel(roleLabel)) {
                inferredRelationPlayers.add(RelationPlayer.of(rolePattern, varName.admin()));
                allocatedRelationPlayers.add(rp);
            }
        }
    });
    // remaining roles
    // role types can repeat so no matter what has been allocated still the full spectrum of possibilities is present
    // TODO make restrictions based on cardinality constraints
    Set<Role> possibleRoles = relType != null ? relType.relates().collect(toSet()) : inferPossibleTypes(sub).stream().filter(Concept::isRelationshipType).map(Concept::asRelationshipType).flatMap(RelationshipType::relates).collect(toSet());
    // possible role types for each casting based on its type
    Map<RelationPlayer, Set<Role>> mappings = new HashMap<>();
    getRelationPlayers().stream().filter(rp -> !allocatedRelationPlayers.contains(rp)).forEach(rp -> {
        Var varName = rp.getRolePlayer().var();
        Type type = varTypeMap.get(varName);
        mappings.put(rp, top(type != null ? compatibleRoles(type, possibleRoles) : possibleRoles));
    });
    // allocate all unambiguous mappings
    mappings.entrySet().stream().filter(entry -> entry.getValue().size() == 1).forEach(entry -> {
        RelationPlayer rp = entry.getKey();
        Var varName = rp.getRolePlayer().var();
        Role role = Iterables.getOnlyElement(entry.getValue());
        VarPatternAdmin rolePattern = Graql.var().label(role.getLabel()).admin();
        inferredRelationPlayers.add(RelationPlayer.of(rolePattern, varName.admin()));
        allocatedRelationPlayers.add(rp);
    });
    // fill in unallocated roles with metarole
    getRelationPlayers().stream().filter(rp -> !allocatedRelationPlayers.contains(rp)).forEach(rp -> {
        Var varName = rp.getRolePlayer().var();
        VarPatternAdmin rolePattern = rp.getRole().orElse(null);
        rolePattern = rolePattern != null ? rolePattern.var().label(metaRole.getLabel()).admin() : Graql.var().label(metaRole.getLabel()).admin();
        inferredRelationPlayers.add(RelationPlayer.of(rolePattern, varName.admin()));
    });
    VarPattern relationPattern = relationPattern(getVarName(), inferredRelationPlayers);
    VarPatternAdmin newPattern = (isDirect() ? relationPattern.directIsa(getPredicateVariable()) : relationPattern.isa(getPredicateVariable())).admin();
    return create(newPattern, getPredicateVariable(), getTypeId(), getParentQuery());
}

Example 68 with Label

use of ai.grakn.concept.Label in project grakn by graknlabs.

the class ConceptBuilder method tryPutConcept.

private Concept tryPutConcept() {
    usedParams.clear();
    Concept concept;
    if (has(IS_ROLE)) {
        use(IS_ROLE);
        Label label = use(LABEL);
        Role role = executor.tx().putRole(label);
        if (has(SUPER_CONCEPT)) {
            setSuper(role, use(SUPER_CONCEPT));
        }
        concept = role;
    } else if (has(IS_RULE)) {
        use(IS_RULE);
        Label label = use(LABEL);
        Pattern when = use(WHEN);
        Pattern then = use(THEN);
        Rule rule = executor.tx().putRule(label, when, then);
        if (has(SUPER_CONCEPT)) {
            setSuper(rule, use(SUPER_CONCEPT));
        }
        concept = rule;
    } else if (has(SUPER_CONCEPT)) {
        concept = putSchemaConcept();
    } else if (has(TYPE)) {
        concept = putInstance();
    } else {
        throw GraqlQueryException.insertUndefinedVariable(executor.printableRepresentation(var));
    }
    // Check for any unexpected parameters
    preProvidedParams.forEach((param, value) -> {
        if (!usedParams.contains(param)) {
            throw GraqlQueryException.insertUnexpectedProperty(param.name(), value, concept);
        }
    });
    return concept;
}

Example 69 with Label

use of ai.grakn.concept.Label in project grakn by graknlabs.

the class SchemaConceptTest method whenChangingSchemaConceptLabel_EnsureLabelIsChangedAndOldLabelIsDead.

@Test
public void whenChangingSchemaConceptLabel_EnsureLabelIsChangedAndOldLabelIsDead() {
    Label originalLabel = Label.of("my original label");
    Label newLabel = Label.of("my new label");
    EntityType entityType = tx.putEntityType(originalLabel.getValue());
    // Original label works
    assertEquals(entityType, tx.getType(originalLabel));
    // Change The Label
    entityType.setLabel(newLabel);
    // Check the label is changes
    assertEquals(newLabel, entityType.getLabel());
    assertEquals(entityType, tx.getType(newLabel));
    // Check old label is dead
    assertNull(tx.getType(originalLabel));
}

Example 70 with Label

use of ai.grakn.concept.Label in project grakn by graknlabs.

the class SchemaConceptTest method whenSpecifyingTheResourceTypeOfAnEntityType_EnsureTheImplicitStructureIsCreated.

@Test
public void whenSpecifyingTheResourceTypeOfAnEntityType_EnsureTheImplicitStructureIsCreated() {
    Label resourceLabel = Label.of("Attribute Type");
    EntityType entityType = tx.putEntityType("Entity1");
    AttributeType attributeType = tx.putAttributeType("Attribute Type", AttributeType.DataType.STRING);
    // Implicit Names
    Label hasResourceOwnerLabel = Schema.ImplicitType.HAS_OWNER.getLabel(resourceLabel);
    Label hasResourceValueLabel = Schema.ImplicitType.HAS_VALUE.getLabel(resourceLabel);
    Label hasResourceLabel = Schema.ImplicitType.HAS.getLabel(resourceLabel);
    entityType.attribute(attributeType);
    RelationshipType relationshipType = tx.getRelationshipType(hasResourceLabel.getValue());
    Assert.assertEquals(hasResourceLabel, relationshipType.getLabel());
    Set<Label> roleLabels = relationshipType.relates().map(SchemaConcept::getLabel).collect(toSet());
    assertThat(roleLabels, containsInAnyOrder(hasResourceOwnerLabel, hasResourceValueLabel));
    assertThat(entityType.plays().collect(toSet()), containsInAnyOrder(tx.getRole(hasResourceOwnerLabel.getValue())));
    assertThat(attributeType.plays().collect(toSet()), containsInAnyOrder(tx.getRole(hasResourceValueLabel.getValue())));
    // Check everything is implicit
    assertTrue(relationshipType.isImplicit());
    relationshipType.relates().forEach(role -> assertTrue(role.isImplicit()));
    // Check that resource is not required
    EdgeElement entityPlays = ((EntityTypeImpl) entityType).vertex().getEdgesOfType(Direction.OUT, Schema.EdgeLabel.PLAYS).iterator().next();
    assertFalse(entityPlays.propertyBoolean(Schema.EdgeProperty.REQUIRED));
    EdgeElement resourcePlays = ((AttributeTypeImpl<?>) attributeType).vertex().getEdgesOfType(Direction.OUT, Schema.EdgeLabel.PLAYS).iterator().next();
    assertFalse(resourcePlays.propertyBoolean(Schema.EdgeProperty.REQUIRED));
}