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

Class LineageGraphConnectorHelper

java.lang.Object

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

public class LineageGraphConnectorHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
LineageGraphConnectorHelper(org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource graphTraversalSource, boolean supportingTransactions)

Method Summary

Modifier and Type	Method	Description
Optional<LineageVerticesAndEdges>	endToEnd(String guid, boolean includeProcesses)	Returns the end to end graph of queried entity, which can be a column or a table.
Optional<LineageVerticesAndEdges>	sourceAndDestination(String guid, boolean includeProcesses)	Returns a subgraph containing all root and leaf nodes of the full graph that are connected with the queried node.
Optional<LineageVerticesAndEdges>	ultimateDestination(String guid, boolean includeProcesses)	Returns the ultimate destination graph of queried entity, which can be a column or a table.
Optional<LineageVerticesAndEdges>	ultimateSource(String guid, boolean includeProcesses)	Returns the ultimate source graph of queried entity, which can be a column or a table.
Optional<LineageVerticesAndEdges>	verticalLineage(String guid)	Returns a subgraph navigating the edges of interest based on target node type.

Methods inherited from class java.lang.Object

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

Constructor Detail

LineageGraphConnectorHelper

public LineageGraphConnectorHelper(org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource graphTraversalSource,
                                   boolean supportingTransactions)

Method Detail

ultimateSource

public Optional<LineageVerticesAndEdges> ultimateSource(String guid,
                                                        boolean includeProcesses)

Returns the ultimate source graph of queried entity, which can be a column or a table. In case of tables, relationships of type LineageMapping will be traversed backwards, all the way to the source. If no vertices are found, than DataFlow relationships are used for traversal. In case of columns, DataFlow relationships are directly used

Parameters:

guid - queried entity

includeProcesses - include processes

Returns:

graph in an Open Lineage specific format

ultimateDestination

public Optional<LineageVerticesAndEdges> ultimateDestination(String guid,
                                                             boolean includeProcesses)

Returns the ultimate destination graph of queried entity, which can be a column or a table. In case of tables, relationships of type LineageMapping will be traversed forwards, all the way to the destination. If no vertices are found, than DataFlow relationships are used for traversal. In case of columns, DataFlow relationships are directly used

Parameters:

guid - queried entity

includeProcesses - include processes

Returns:

graph in an Open Lineage specific format

endToEnd

public Optional<LineageVerticesAndEdges> endToEnd(String guid,
                                                  boolean includeProcesses)

Returns the end to end graph of queried entity, which can be a column or a table. In case of tables, relationships of type LineageMapping will be traversed backwards and forwards, all the way to the source and the destination, respectively. If no vertices are found, than DataFlow relationships are used for traversal. In case of columns, DataFlow relationships are directly used

Parameters:

guid - queried entity

includeProcesses - include processes

Returns:

graph in an Open Lineage specific format

sourceAndDestination

public Optional<LineageVerticesAndEdges> sourceAndDestination(String guid,
                                                              boolean includeProcesses)

Returns a subgraph containing all root and leaf nodes of the full graph that are connected with the queried node. The queried node can be a column or table.

Parameters:

guid - The guid of the node of which the lineage is queried of. This can be a column or a table.

Returns:

a subgraph in an Open Lineage specific format

verticalLineage

public Optional<LineageVerticesAndEdges> verticalLineage(String guid)

Returns a subgraph navigating the edges of interest based on target node type. For more info, check glossaryVerticalLineage(java.lang.String), tabularColumnVerticalLineage(java.lang.String), relationalColumnVerticalLineage(java.lang.String)

Parameters:

guid - guid to extract vertical lineage for

Returns:

a subgraph in an Open Lineage specific format