ai.grakn.kb.internal

Class GraknTxJanus

java.lang.Object

ai.grakn.kb.internal.GraknTxAbstract<org.janusgraph.core.JanusGraph>

ai.grakn.kb.internal.GraknTxJanus

All Implemented Interfaces:

ai.grakn.GraknTx, ai.grakn.kb.admin.GraknAdmin, AutoCloseable

public class GraknTxJanus
extends GraknTxAbstract<org.janusgraph.core.JanusGraph>

A GraknTx using JanusGraph as a vendor backend.

Wraps up a JanusGraph as a method of storing the GraknTx object Model. With this vendor some issues to be aware of: 1. Whenever a transaction is closed if none remain open then the connection to the graph is closed permanently. 2. Clearing the graph explicitly closes the connection as well.

Author:

fppt

Field Summary

Fields inherited from class ai.grakn.kb.internal.GraknTxAbstract

NORMAL_CACHE_TIMEOUT_MS, SHARDING_THRESHOLD

Constructor Summary

Constructors

Constructor and Description
GraknTxJanus(org.janusgraph.core.JanusGraph graph, ai.grakn.Keyspace keyspace, String engineUrl, Properties properties)

Method Summary

Modifier and Type	Method and Description
VertexElement	addVertexElement(Schema.BaseType baseType, ai.grakn.concept.ConceptId... conceptIds)
protected void	clearGraph()
void	commitTransactionInternal()
boolean	isConceptModified(ai.grakn.concept.Concept concept) Uses JanusGraphVertex.isModified()
boolean	isSessionClosed()
int	numOpenTx()
void	openTransaction(ai.grakn.GraknTxType txType)
boolean	validElement(org.apache.tinkerpop.gremlin.structure.Element element)

Methods inherited from class ai.grakn.kb.internal.GraknTxAbstract

abort, admin, buildConcept, buildConcept, checkMutationAllowed, checkSchemaMutationAllowed, close, closeSession, commit, commitLog, commitNoLogs, convertToId, delete, duplicateResourcesExist, factory, fixDuplicateResources, getAttributesByValue, getAttributeType, getConcept, getConcept, getEngineUrl, getEntityType, getKeyspace, getMetaConcept, getMetaEntityType, getMetaRelationType, getMetaResourceType, getMetaRole, getMetaRule, getRelationshipType, getRole, getRule, getSchemaConcept, getSchemaConcept, getTinkerPopGraph, getTinkerTraversal, getType, graql, isBatchTx, isClosed, isReadOnly, putAttributeType, putAttributeType, putEntityType, putEntityType, putRelationshipType, putRelationshipType, putRelationTypeImplicit, putRole, putRole, putRoleTypeImplicit, putRule, putRule, putShortcutEdge, shard, txCache, updateConceptCounts

Methods inherited from class java.lang.Object

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

Constructor Detail

GraknTxJanus

public GraknTxJanus(org.janusgraph.core.JanusGraph graph,
                    ai.grakn.Keyspace keyspace,
                    String engineUrl,
                    Properties properties)

Method Detail

isConceptModified

public boolean isConceptModified(ai.grakn.concept.Concept concept)

Uses JanusGraphVertex.isModified()

Specified by:

isConceptModified in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

Parameters:

concept - A concept in the graph

Returns:

true if the concept has been modified

openTransaction

public void openTransaction(ai.grakn.GraknTxType txType)

Overrides:

openTransaction in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

isSessionClosed

public boolean isSessionClosed()

Specified by:

isSessionClosed in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

numOpenTx

public int numOpenTx()

Specified by:

numOpenTx in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

clearGraph

protected void clearGraph()

Overrides:

clearGraph in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

commitTransactionInternal

public void commitTransactionInternal()

Overrides:

commitTransactionInternal in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

addVertexElement

public VertexElement addVertexElement(Schema.BaseType baseType,
                                      ai.grakn.concept.ConceptId... conceptIds)

Overrides:

addVertexElement in class GraknTxAbstract<org.janusgraph.core.JanusGraph>

validElement

public boolean validElement(org.apache.tinkerpop.gremlin.structure.Element element)

Overrides:

validElement in class GraknTxAbstract<org.janusgraph.core.JanusGraph>