Package org.odpi.openmetadata.accessservices.subjectarea.handlers

Class SubjectAreaGraphHandler

java.lang.Object

org.odpi.openmetadata.accessservices.subjectarea.handlers.SubjectAreaHandler

org.odpi.openmetadata.accessservices.subjectarea.handlers.SubjectAreaGraphHandler

public class SubjectAreaGraphHandler
extends SubjectAreaHandler

The SubjectAreaRESTServicesInstance provides the org.odpi.openmetadata.accessservices.subjectarea.server-side implementation of the SubjectArea Open Metadata Access Service (OMAS). This interface provides glossary authoring interfaces for subject area experts.

Field Summary

Fields inherited from class org.odpi.openmetadata.accessservices.subjectarea.handlers.SubjectAreaHandler

genericHandler, invalidParameterHandler, mappersFactory, maxPageSize

Constructor Summary

Constructors

Constructor	Description
SubjectAreaGraphHandler(OpenMetadataAPIGenericHandler genericHandler, int maxPageSize)	Construct the Subject Area Graph Handler needed to operate within a single server instance.

Method Summary

Modifier and Type	Method	Description
SubjectAreaOMASAPIResponse<Graph>	getGraph(String userId, String guid, Date asOfTime, String nodeFilterStr, String relationshipFilterStr, StatusFilter statusFilter, Integer level)	Get the graph of nodes and relationships radiating out from a node.

Methods inherited from class org.odpi.openmetadata.accessservices.subjectarea.handlers.SubjectAreaHandler

convertOmrsToOmas, findNodes, getAllRelationshipForEntity, getAllRelationshipsForEntity, getMaxPageSize, getNodesFromEntityDetails, getRelationshipsForEntityByType, getRelationshipsFromRelationships, sanitiseFindRequest, sanitiseFindRequest, setNodeEffectivity, setRelationshipEffectivity, setUniqueQualifiedNameIfBlank, validateGlossarySummaryDuringCreation

Methods inherited from class java.lang.Object

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

Constructor Detail

SubjectAreaGraphHandler

public SubjectAreaGraphHandler(OpenMetadataAPIGenericHandler genericHandler,
                               int maxPageSize)

Construct the Subject Area Graph Handler needed to operate within a single server instance.

Parameters:

genericHandler - generic handler

maxPageSize - maximum page size

Method Detail

getGraph

public SubjectAreaOMASAPIResponse<Graph> getGraph(String userId,
                                                  String guid,
                                                  Date asOfTime,
                                                  String nodeFilterStr,
                                                  String relationshipFilterStr,
                                                  StatusFilter statusFilter,
                                                  Integer level)

Get the graph of nodes and relationships radiating out from a node.

Return the nodes and relationships that radiate out from the supplied node (identified by a GUID). The results are scoped by types of relationships, types of nodes and classifications as well as level.

Parameters:

userId - userId under which the request is performed

guid - the starting point of the query.

nodeFilterStr - Comma separated list of node names to include in the query results. Null means include all entities found, irrespective of their type.

relationshipFilterStr - comma separated list of relationship names to include in the query results. Null means include all relationships found, irrespective of their type.

asOfTime - Requests a historical query of the relationships for the entity. Null means return the present values.

statusFilter - By default only active instances are returned. Specify ALL to see all instance in any status.

level - the number of the relationships (relationships) out from the starting node that the query will traverse to gather results. If not specified then it defaults to 3.

Returns:

A graph of nodeTypes.

• UnrecognizedGUIDException the supplied guid was not recognised
• UserNotAuthorizedException the requesting user is not authorized to issue this request.
• MetadataServerUncontactableException not able to communicate with a Metadata respository service.
• InvalidParameterException one of the parameters is null or invalid.
• FunctionNotSupportedException Function not supported this indicates that a find was issued but the repository does not implement find functionality in some way.