com.blazegraph.gremlin.embedded

Class BlazeGraphReadOnly

java.lang.Object

com.blazegraph.gremlin.structure.BlazeGraph

com.blazegraph.gremlin.embedded.BlazeGraphEmbedded

com.blazegraph.gremlin.embedded.BlazeGraphReadOnly

All Implemented Interfaces:

AutoCloseable, org.apache.tinkerpop.gremlin.structure.Graph, org.apache.tinkerpop.gremlin.structure.util.Host

public class BlazeGraphReadOnly
extends BlazeGraphEmbedded

BlazeGraphReadOnly extends BlazeGraphEmbedded and thus offers all the same operations, except write operations will not be permitted (BlazeGraphReadOnly.tx() will throw an exception). You can open as many read-only views as you like, but we recommend you use a connection pool so as not to overtax system resources. Applications should be written with the one-writer many-readers paradigm front of mind.

Important: Make sure to close the read-only view as soon as you are done with it.

Author:

mikepersonick

Nested Class Summary

Nested classes/interfaces inherited from class com.blazegraph.gremlin.embedded.BlazeGraphEmbedded

BlazeGraphEmbedded.BlazeTransaction

Nested classes/interfaces inherited from class com.blazegraph.gremlin.structure.BlazeGraph

BlazeGraph.Exceptions, BlazeGraph.GraphStreamer<E>, BlazeGraph.Match, BlazeGraph.Options, BlazeGraph.Transforms

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.structure.Graph

org.apache.tinkerpop.gremlin.structure.Graph.Features, org.apache.tinkerpop.gremlin.structure.Graph.Hidden, org.apache.tinkerpop.gremlin.structure.Graph.OptIn, org.apache.tinkerpop.gremlin.structure.Graph.OptIns, org.apache.tinkerpop.gremlin.structure.Graph.OptOut, org.apache.tinkerpop.gremlin.structure.Graph.OptOuts, org.apache.tinkerpop.gremlin.structure.Graph.Variables

Field Summary

Fields inherited from class com.blazegraph.gremlin.embedded.BlazeGraphEmbedded

closed, listener, listeners, repo

Fields inherited from class com.blazegraph.gremlin.structure.BlazeGraph

config, sparqlLog, sparqlLogMax, transforms

Fields inherited from interface org.apache.tinkerpop.gremlin.structure.Graph

GRAPH

Method Summary

Modifier and Type	Method and Description
void	close() Close the read-only SAIL connection.
com.bigdata.rdf.sail.BigdataSailRepositoryConnection	cxn() Return the read-only SAIL connection.
BlazeGraphEmbedded.BlazeTransaction	tx() Write operations not supported by this class.

Methods inherited from class com.blazegraph.gremlin.embedded.BlazeGraphEmbedded

__tearDownUnitTest, _ask, _project, _select, _update, addListener, cancel, cancel, commit, dumpStore, flush, getRunningQueries, historicalStatementCount, lastCommitTime, open, open, rdfValueFactory, readOnlyConnection, removeListener, rollback, runningQueriesToString, statementCount

Methods inherited from class com.blazegraph.gremlin.structure.BlazeGraph

addEdge, addVertex, ask, ask, bulkLoad, bulkLoad, bulkLoad, compute, compute, configuration, edge, edgeCount, edges, features, graphAtomTransform, history, history, isBulkLoad, project, project, search, select, select, setBulkLoad, setMaxQueryTime, toString, update, update, valueFactory, variables, vertex, vertexCount, vertices

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tinkerpop.gremlin.structure.Graph

addVertex, io, traversal, traversal

Method Detail

tx

public BlazeGraphEmbedded.BlazeTransaction tx()

Write operations not supported by this class.

Specified by:

tx in interface org.apache.tinkerpop.gremlin.structure.Graph

Overrides:

tx in class BlazeGraphEmbedded

See Also:

BlazeGraphEmbedded.BlazeTransaction

cxn

public com.bigdata.rdf.sail.BigdataSailRepositoryConnection cxn()

Return the read-only SAIL connection.

Overrides:

cxn in class BlazeGraphEmbedded

close

public void close()

Close the read-only SAIL connection.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface org.apache.tinkerpop.gremlin.structure.Graph

Overrides:

close in class BlazeGraphEmbedded

See Also:

BlazeGraphEmbedded.close()