Package org.odpi.openmetadata.openconnectors.governancedaemonconnectors.openlineageconnectors.janusconnector.graph

Class GraphHelper

java.lang.Object

org.odpi.openmetadata.openconnectors.governancedaemonconnectors.openlineageconnectors.janusconnector.graph.GraphHelper

public class GraphHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
GraphHelper()

Method Summary

Modifier and Type	Method	Description
void	closeGraph()	Close the connection to the graph
<U> void	commit(BiConsumer<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,U> consumer, U argument, Consumer<Exception> errorHandler)	Helper method that gets a traversal and executes the code that queries the graph
<V,U> void	commit(org.apache.tinkerpop.gremlin.util.function.TriConsumer<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,V,U> consumer, V argument1, U argument2, Consumer<Exception> errorHandler)	Helper method that gets a traversal and executes the code that queries the graph
org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource	getGraphTraversalSource()	Returns a traversal that is used to query the graph
<U,V> U	getResult(BiFunction<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,V,U> function, V argument, BiConsumer<Exception,V> errorHandler)	Helper method that gets a traversal and executes the code that queries the graph
<U> U	getResult(Function<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,U> function, Consumer<Exception> errorHandler)	Helper method that gets a traversal and executes the code that queries the graph
<U,V,T> U	getResult(org.apache.tinkerpop.gremlin.util.function.TriFunction<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,V,T,U> function, V argument1, T argument2, org.apache.tinkerpop.gremlin.util.function.TriConsumer<Exception,V,T> errorHandler)	Helper method that gets a traversal and executes the code that queries the graph
boolean	isSupportingTransactions()	return whether the graph is supporting transactions
void	openGraph(String providerClass, Map<String,Object> configurationProperties, AuditLog auditLog)	Open the graph with the provided configuration

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphHelper

public GraphHelper()

Method Detail

openGraph

public void openGraph(String providerClass,
                      Map<String,Object> configurationProperties,
                      AuditLog auditLog)
               throws JanusConnectorException,
                      OpenLineageException

Open the graph with the provided configuration

Parameters:

providerClass - - Provider Class name to be used

configurationProperties - - The configuration properties for janusGraph

auditLog - - Used for logging errors

Throws:

JanusConnectorException - if init fails

OpenLineageException - if init fails

getGraphTraversalSource

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

Returns a traversal that is used to query the graph

Returns:

traversal for the janusgraph

isSupportingTransactions

public boolean isSupportingTransactions()

return whether the graph is supporting transactions

closeGraph

public void closeGraph()

Close the connection to the graph

commit

public <U> void commit(BiConsumer<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,U> consumer,
                       U argument,
                       Consumer<Exception> errorHandler)

Helper method that gets a traversal and executes the code that queries the graph

Type Parameters:

U - type of the second parameter of the consumer

Parameters:

consumer - must accept a GraphTraversalSource as the first parameter and has a second parameter

argument - the second argument of the consumer

errorHandler - function that is called when an error occurs while executing the consumer

commit

public <V,U> void commit(org.apache.tinkerpop.gremlin.util.function.TriConsumer<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,V,U> consumer,
                               V argument1,
                               U argument2,
                               Consumer<Exception> errorHandler)

Helper method that gets a traversal and executes the code that queries the graph

Type Parameters:

U - type of the second parameter of the consumer

V - type of the third parameter of the consumer

Parameters:

consumer - must accept a GraphTraversalSource as the first parameter and has two more parameter

argument1 - the second argument of the consumer

argument2 - the third argument of the consumer

errorHandler - function that is called when an error occurs while executing the consumer

getResult

public <U> U getResult(Function<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,U> function,
                       Consumer<Exception> errorHandler)

Helper method that gets a traversal and executes the code that queries the graph

Type Parameters:

U - type of the returned result

Parameters:

function - must accept a GraphTraversalSource as the parameter

errorHandler - consumer that is called when an error occurs while executing the function

Returns:

the result of the function

getResult

public <U,V> U getResult(BiFunction<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,V,U> function,
                               V argument,
                               BiConsumer<Exception,V> errorHandler)

Helper method that gets a traversal and executes the code that queries the graph

Type Parameters:

V - the type of the parameter of the function

U - type of the returned result

Parameters:

function - must accept a GraphTraversalSource as the first parameter and has a second parameter

argument - the argument of the function

errorHandler - consumer that is called when an error occurs while executing the function

Returns:

the result of the function

getResult

public <U,V,T> U getResult(org.apache.tinkerpop.gremlin.util.function.TriFunction<org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource,V,T,U> function,
                                       V argument1,
                                       T argument2,
                                       org.apache.tinkerpop.gremlin.util.function.TriConsumer<Exception,V,T> errorHandler)

Helper method that gets a traversal and executes the code that queries the graph

Type Parameters:

V - the type of the second parameter of the function

T - the type of the third parameter of the function

U - type of the returned result

Parameters:

function - must accept a GraphTraversalSource as the first parameter and has two more parameters

argument1 - the first argument of the function

argument2 - the second argument of the function

errorHandler - consumer that is called when an error occurs while executing the function

Returns:

the result of the function