ai.grakn.graph.internal

Class GraknOrientDBGraph

java.lang.Object

ai.grakn.graph.internal.AbstractGraknGraph<org.apache.tinkerpop.gremlin.orientdb.OrientGraph>

ai.grakn.graph.internal.GraknOrientDBGraph

All Implemented Interfaces:

GraknGraph, GraknAdmin, AutoCloseable

public class GraknOrientDBGraph
extends AbstractGraknGraph<org.apache.tinkerpop.gremlin.orientdb.OrientGraph>

A Grakn Graph using OrientGraph as a vendor backend.

Wraps up a OrientGraph as a method of storing the Grakn Graph object Model. With this vendor some issues to be aware of: 1. GraknGraph.rollback() is not supported at this stage. 2. AbstractGraknGraph.isConceptModified(ConceptImpl) always returns true due to methods not available yet on orient's side. 3. Indexing is done across labels as opposed to global indices

Author:

fppt

Field Summary

Fields inherited from class ai.grakn.graph.internal.AbstractGraknGraph

LOG

Constructor Summary

Constructors

Constructor and Description
GraknOrientDBGraph(org.apache.tinkerpop.gremlin.orientdb.OrientGraph graph, String name, String engineUrl, boolean batchLoading)

Method Summary

Modifier and Type	Method and Description
protected void	commitTransaction()
org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal<org.apache.tinkerpop.gremlin.structure.Vertex,org.apache.tinkerpop.gremlin.structure.Vertex>	getTinkerTraversal() Utility function to get a read-only Tinkerpop traversal.
boolean	isConceptModified(ai.grakn.graph.internal.ConceptImpl concept)
void	rollback() Resets the current transaction without committing.

Methods inherited from class ai.grakn.graph.internal.AbstractGraknGraph

admin, buildConcept, clear, clearGraph, close, closeGraph, closePermanent, commit, commit, commit, commitNoLogs, finaliseClose, fixDuplicateCastings, fixDuplicateResources, getConcept, getConcept, getConceptByBaseIdentifier, getEntityType, getKeyspace, getMetaConcept, getMetaEntityType, getMetaRelationType, getMetaResourceType, getMetaRoleType, getMetaRuleConstraint, getMetaRuleInference, getMetaRuleType, getRelation, getRelationType, getResourcesByValue, getResourceType, getRoleType, getRuleType, getTinkerPopGraph, getType, graql, hasCommitted, implicitConceptsVisible, initialiseMetaConcepts, isBatchLoadingEnabled, isClosed, open, putEntityType, putEntityType, putRelationType, putRelationType, putResourceType, putResourceType, putResourceTypeUnique, putResourceTypeUnique, putRoleType, putRoleType, putRuleType, putRuleType, showImplicitConcepts, validVertex

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GraknOrientDBGraph

public GraknOrientDBGraph(org.apache.tinkerpop.gremlin.orientdb.OrientGraph graph,
                          String name,
                          String engineUrl,
                          boolean batchLoading)

Method Detail

isConceptModified

public boolean isConceptModified(ai.grakn.graph.internal.ConceptImpl concept)

Specified by:

isConceptModified in class AbstractGraknGraph<org.apache.tinkerpop.gremlin.orientdb.OrientGraph>

Parameters:

concept - A concept in the graph

Returns:

True because at the moment there is no method in OrientElement which helps us to determine this.

commitTransaction

protected void commitTransaction()

Overrides:

commitTransaction in class AbstractGraknGraph<org.apache.tinkerpop.gremlin.orientdb.OrientGraph>

getTinkerTraversal

public org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal<org.apache.tinkerpop.gremlin.structure.Vertex,org.apache.tinkerpop.gremlin.structure.Vertex> getTinkerTraversal()

Description copied from interface: GraknAdmin

Utility function to get a read-only Tinkerpop traversal.

Specified by:

getTinkerTraversal in interface GraknAdmin

Overrides:

getTinkerTraversal in class AbstractGraknGraph<org.apache.tinkerpop.gremlin.orientdb.OrientGraph>

Returns:

A read-only Tinkerpop traversal for manually traversing the graph

rollback

public void rollback()

Description copied from interface: GraknGraph

Resets the current transaction without committing.

Specified by:

rollback in interface GraknGraph

Overrides:

rollback in class AbstractGraknGraph<org.apache.tinkerpop.gremlin.orientdb.OrientGraph>