org.odpi.openmetadata.governanceservers.openlineage.graph

Interface LineageGraph

All Superinterfaces:

OpenLineageGraphConnector

All Known Implementing Classes:

LineageGraphConnectorBase

public interface LineageGraph
extends OpenLineageGraphConnector

Method Summary

Modifier and Type	Method and Description
void	deleteClassification(Set<GraphContext> classificationContext) Deletes an entity's classification in the Graph
void	deleteEntity(String guid, Object version) /** Deletes a vertex in the graph
void	deleteRelationship(String guid) Deletes a relationship in the graph
Optional<Long>	getAssetLineageUpdateTime() Gets last asset lineage update time from the graph
boolean	isEntityInGraph(String guid) Returns whether an entity exists in the graph or not
void	performLineageGraphJob() Task that the scheduler performs based on the interval
void	saveAssetLineageUpdateTime(Long timestamp) Save last asset lineage update time in the graph
void	storeToGraph(Set<GraphContext> graphContext) Stores a lineage event into the lineage graph database
void	updateClassification(Set<GraphContext> classificationContext) Updates an entity's classification in the Graph
void	updateEntity(LineageEntity lineageEntity) Updates a vertex in the Graph
void	updateNeighbours(String nodeGUID, Set<String> neighboursGUIDS) Updates the neighbours of a node by removing all the relationships that no longer have a direct link to the entity.
void	updateRelationship(LineageRelationship lineageRelationship) Updates a vertex in the Graph
void	upsertRelationship(LineageRelationship lineageRelationship) Create or update the relationship between two edges In case the vertexes are not created, they are firstly created

Methods inherited from interface org.odpi.openmetadata.governanceservers.openlineage.OpenLineageGraphConnector

disconnect, getEntityDetails, initializeGraphDB, lineage, start

Method Detail

storeToGraph

void storeToGraph(Set<GraphContext> graphContext)

Stores a lineage event into the lineage graph database

Parameters:

graphContext - graph Collection

updateNeighbours

void updateNeighbours(String nodeGUID,
                      Set<String> neighboursGUIDS)

Updates the neighbours of a node by removing all the relationships that no longer have a direct link to the entity.

Parameters:

nodeGUID - - the identifier of the entity that was updated

neighboursGUIDS - - the identifiers of the nodes that have a direct relationship to the entity

updateEntity

void updateEntity(LineageEntity lineageEntity)

Updates a vertex in the Graph

Parameters:

lineageEntity - entity to be updated

upsertRelationship

void upsertRelationship(LineageRelationship lineageRelationship)

Create or update the relationship between two edges In case the vertexes are not created, they are firstly created

Parameters:

lineageRelationship - relationship to be updated or created

updateRelationship

void updateRelationship(LineageRelationship lineageRelationship)

Updates a vertex in the Graph

Parameters:

lineageRelationship - relationship to be updated

updateClassification

void updateClassification(Set<GraphContext> classificationContext)

Updates an entity's classification in the Graph

Parameters:

classificationContext - classification context

deleteClassification

void deleteClassification(Set<GraphContext> classificationContext)

Deletes an entity's classification in the Graph

Parameters:

classificationContext - classification context

deleteRelationship

void deleteRelationship(String guid)

Deletes a relationship in the graph

Parameters:

guid - unique identifier of the entity to be deleted

deleteEntity

void deleteEntity(String guid,
                  Object version)

/** Deletes a vertex in the graph

Parameters:

guid - unique identifier of the entity to be deleted

version - version of the entity to be deleted

performLineageGraphJob

void performLineageGraphJob()

Task that the scheduler performs based on the interval

saveAssetLineageUpdateTime

void saveAssetLineageUpdateTime(Long timestamp)

Save last asset lineage update time in the graph

Parameters:

timestamp - the standard epoch time in milliseconds

getAssetLineageUpdateTime

Optional<Long> getAssetLineageUpdateTime()

Gets last asset lineage update time from the graph

Returns:

last update time represented as epoch time milliseconds

isEntityInGraph

boolean isEntityInGraph(String guid)

Returns whether an entity exists in the graph or not

Parameters:

guid - the lineage entity guid

Returns:

the boolean