ai.grakn.kb.internal.concept

Class AttributeImpl<D>

java.lang.Object

ai.grakn.kb.internal.concept.ConceptImpl

ai.grakn.kb.internal.concept.ThingImpl<Attribute<D>,AttributeType<D>>

ai.grakn.kb.internal.concept.AttributeImpl<D>

Type Parameters:

D - The data type of this resource type. Supported Types include: String, Long, Double, and Boolean

All Implemented Interfaces:

Attribute<D>, Concept, Thing, CacheOwner, ConceptVertex

public class AttributeImpl<D>
extends ThingImpl<Attribute<D>,AttributeType<D>>
implements Attribute<D>

Represent a literal resource in the graph.

Acts as an Thing when relating to other instances except it has the added functionality of: 1. It is unique to its AttributeType based on it's value. 2. It has a AttributeType.DataType associated with it which constrains the allowed values.

Author:

fppt

Method Summary

Modifier and Type	Method and Description
static <D> AttributeImpl<D>	create(VertexElement vertexElement, AttributeType<D> type, Object value)
AttributeType.DataType<D>	dataType()
static AttributeImpl	from(Attribute attribute)
static <D> AttributeImpl<D>	get(VertexElement vertexElement)
String	innerToString()
java.util.stream.Stream<Thing>	owners()
D	value()

Methods inherited from class ai.grakn.kb.internal.concept.ThingImpl

attributeInferred, attributes, delete, getIndex, has, isInferred, keys, relationships, relhas, roles, type, unhas

Methods inherited from class ai.grakn.kb.internal.concept.ConceptImpl

baseType, caches, createShard, currentShard, deleteNode, equals, hashCode, id, isDeleted, keyspace, shardCount, shards, toString, vertex

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ai.grakn.concept.Attribute

asAttribute, has, isAttribute, owner, type, unhas

Methods inherited from interface ai.grakn.concept.Thing

asThing, attributes, isInferred, isThing, keys, relationships, relhas, roles

Methods inherited from interface ai.grakn.concept.Concept

asAttributeType, asEntity, asEntityType, asRelationship, asRelationshipType, asRole, asRule, asSchemaConcept, asType, delete, id, isAttributeType, isDeleted, isEntity, isEntityType, isRelationship, isRelationshipType, isRole, isRule, isSchemaConcept, isType, keyspace

Methods inherited from interface ai.grakn.kb.internal.concept.ConceptVertex

from

Methods inherited from interface ai.grakn.kb.internal.cache.CacheOwner

from, registerCache, txCacheClear, txCacheFlush

Method Detail

get

public static <D> AttributeImpl<D> get(VertexElement vertexElement)

create

public static <D> AttributeImpl<D> create(VertexElement vertexElement,
                                          AttributeType<D> type,
                                          Object value)

dataType

public AttributeType.DataType<D> dataType()

Specified by:

dataType in interface Attribute<D>

Returns:

The data type of this Attribute's AttributeType.

owners

public java.util.stream.Stream<Thing> owners()

Specified by:

owners in interface Attribute<D>

Returns:

The list of all Instances which posses this resource

value

public D value()

Specified by:

value in interface Attribute<D>

Returns:

The value casted to the correct type

innerToString

public String innerToString()

from

public static AttributeImpl from(Attribute attribute)