ai.grakn.kb.internal.concept

Class RoleImpl

java.lang.Object

ai.grakn.kb.internal.concept.ConceptImpl

ai.grakn.kb.internal.concept.SchemaConceptImpl<Role>

ai.grakn.kb.internal.concept.RoleImpl

All Implemented Interfaces:

Concept, Role, SchemaConcept, ContainsTxCache, ConceptVertex, Comparable<Concept>

public class RoleImpl
extends SchemaConceptImpl<Role>
implements Role

An SchemaConcept which defines a Role which can be played in a RelationshipType.

This SchemaConcept defines the roles which make up a RelationshipType. It has some additional functionality: 1. It cannot play a Role to itself. 2. It is special in that it is unique to RelationshipTypes.

Author:

fppt

Method Summary

Modifier and Type	Method and Description
static RoleImpl	create(VertexElement vertexElement, Role type, Boolean isImplicit)
static RoleImpl	get(VertexElement vertexElement)
java.util.stream.Stream<Type>	playedByTypes()
java.util.stream.Stream<RelationshipType>	relationshipTypes()
java.util.stream.Stream<Casting>	rolePlayers()
void	txCacheClear() Clears the internal Cache
void	txCacheFlush() Flushes the internal transaction caches so they can refresh with persisted graph

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

delete, from, getLabel, getLabelId, getRulesOfConclusion, getRulesOfHypothesis, innerToString, isImplicit, setLabel, sub, subs, sup, sup, superSet

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

addEdge, baseType, compareTo, createShard, currentShard, deleteNode, equals, getId, getShardCount, hashCode, isDeleted, setShardCount, 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.Role

asRole, isRole, setLabel, sub, subs, sup, sup

Methods inherited from interface ai.grakn.concept.SchemaConcept

asSchemaConcept, getLabel, getLabelId, getRulesOfConclusion, getRulesOfHypothesis, isImplicit, isSchemaConcept

Methods inherited from interface ai.grakn.concept.Concept

asAttribute, asAttributeType, asEntity, asEntityType, asRelationship, asRelationshipType, asRule, asThing, asType, delete, getId, isAttribute, isAttributeType, isDeleted, isEntity, isEntityType, isRelationship, isRelationshipType, isRule, isThing, isType

Methods inherited from interface java.lang.Comparable

compareTo

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

from

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

from

Method Detail

get

public static RoleImpl get(VertexElement vertexElement)

create

public static RoleImpl create(VertexElement vertexElement,
                              Role type,
                              Boolean isImplicit)

txCacheFlush

public void txCacheFlush()

Description copied from class: SchemaConceptImpl

Flushes the internal transaction caches so they can refresh with persisted graph

Overrides:

txCacheFlush in class SchemaConceptImpl<Role>

txCacheClear

public void txCacheClear()

Description copied from interface: ContainsTxCache

Clears the internal Cache

Specified by:

txCacheClear in interface ContainsTxCache

Overrides:

txCacheClear in class SchemaConceptImpl<Role>

relationshipTypes

public java.util.stream.Stream<RelationshipType> relationshipTypes()

Specified by:

relationshipTypes in interface Role

playedByTypes

public java.util.stream.Stream<Type> playedByTypes()

Specified by:

playedByTypes in interface Role

Returns:

A list of all the Concept Types which can play this role.

rolePlayers

public java.util.stream.Stream<Casting> rolePlayers()

Returns:

Get all the roleplayers of this role type