org.odpi.openmetadata.openconnectors.governancedaemonconnectors.openlineageconnectors.janusconnector.factory

Class GraphGremlinBase

java.lang.Object

org.odpi.openmetadata.openconnectors.governancedaemonconnectors.openlineageconnectors.janusconnector.factory.GraphGremlinBase

public class GraphGremlinBase
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource	g
protected org.apache.tinkerpop.gremlin.structure.Graph	graph
protected Map<String,Object>	properties
protected boolean	supportingTransactions

Constructor Summary

Constructors

Constructor and Description
GraphGremlinBase(ConnectionProperties connectionProperties) Constructs a graph using the given properties.

Method Summary

Modifier and Type	Method and Description
void	closeGraph() Closes the graph instance.
protected void	createSchema() Creates the graph schema.
void	dropGraph() Drops the graph instance.
boolean	isSupportingTransactions() Returns transaction support property of the specific graph instance.
org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource	openGraph() Opens the graph instance.
void	updateElements() Makes an update to the existing graph structure.

Methods inherited from class java.lang.Object

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

Field Detail

graph

protected org.apache.tinkerpop.gremlin.structure.Graph graph

g

protected org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource g

supportingTransactions

protected boolean supportingTransactions

properties

protected Map<String,Object> properties

Constructor Detail

GraphGremlinBase

public GraphGremlinBase(ConnectionProperties connectionProperties)

Constructs a graph using the given properties.

Parameters:

connectionProperties - the properties coming from the request

Method Detail

openGraph

public org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource openGraph()

Opens the graph instance. If the graph instance does not exist, a new graph instance will be initialized.

closeGraph

public void closeGraph()
                throws Exception

Closes the graph instance.

Throws:

Exception

dropGraph

public void dropGraph()
               throws Exception

Drops the graph instance. The default implementation does nothing.

Throws:

Exception

createSchema

protected void createSchema()

Creates the graph schema. The default implementation does nothing.

updateElements

public void updateElements()

Makes an update to the existing graph structure. Does not create any new vertices or edges.

isSupportingTransactions

public boolean isSupportingTransactions()

Returns transaction support property of the specific graph instance.