Package org.odpi.openmetadata.viewservices.rex.handlers

Class RexViewHandler

java.lang.Object

org.odpi.openmetadata.viewservices.rex.handlers.RexViewHandler

public class RexViewHandler
extends Object

The RexViewHandler is initialised with the server the call should be sent to. The handler exposes methods for functionality for the repository explorer view

Constructor Summary

Constructors

Constructor	Description
RexViewHandler()	Default constructor for RexViewHandler
RexViewHandler(List<ResourceEndpointConfig> resourceEndpoints)	Constructor for RexViewHandler with configured resourceEndpoints

Method Summary

Modifier and Type	Method	Description
Map<String,RexEntityDigest>	findEntities(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String searchText, String entityTypeName, List<String> classificationNames, Date asOfTime, String methodName)	Retrieve entities (by text search) from the repository server
Map<String,RexRelationshipAndEntitiesDigest>	findRelationships(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String searchText, String relationshipTypeName, Date asOfTime, String methodName)	Retrieve relationships (by text search) from the repository server
RexExpandedEntityDetail	getEntity(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String entityGUID, Date asOfTime, String methodName)	Retrieve entity (by GUID) from the repository server
RexExpandedRelationship	getRelationship(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String relationshipGUID, Date asOfTime, String methodName)	Retrieve relationship (by GUID) from the repository server
Map<String,List<ResourceEndpoint>>	getResourceEndpoints(String userId, String methodName)	getResourceEndpoints - returns a list of the configured resource endpoints.
TypeExplorer	getTypeExplorer(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String methodName)	Retrieve type information from the repository server
RexPreTraversal	preTraversal(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String entityGUID, int depth, long asOfTime, String methodName)	Retrieve the neighborhood surrounding an entity for pre-traversal.
RexTraversal	traversal(String userId, String repositoryServerName, String platformName, boolean enterpriseOption, String entityGUID, int depth, List<String> entityTypeGUIDs, List<String> relationshipTypeGUIDs, List<String> classificationNames, long asOfTime, String methodName)	Retrieve the neighborhood surrounding an entity.

Methods inherited from class java.lang.Object

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

Constructor Details

RexViewHandler

public RexViewHandler()

Default constructor for RexViewHandler

RexViewHandler

public RexViewHandler(List<ResourceEndpointConfig> resourceEndpoints)

Constructor for RexViewHandler with configured resourceEndpoints

Parameters:

resourceEndpoints - - list of resource endpoint configuration objects for this view service

Method Details

getResourceEndpoints

public Map<String,List<ResourceEndpoint>> getResourceEndpoints(String userId,
 String methodName)

getResourceEndpoints - returns a list of the configured resource endpoints. Does not include discovered resource endpoints.

Parameters:

userId - userId under which the request is performed

methodName - The name of the method being invoked

Returns:

The resource endpoints that have been configured for the view service

getTypeExplorer

public TypeExplorer getTypeExplorer(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String methodName)
                             throws RexViewServiceException

Retrieve type information from the repository server

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

methodName - The name of the method being invoked

Returns:

response containing the TypeExplorer object. Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception

getEntity

public RexExpandedEntityDetail getEntity(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String entityGUID,
 Date asOfTime,
 String methodName)
                                  throws RexViewServiceException

Retrieve entity (by GUID) from the repository server

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

entityGUID - the GUID of the entity to retrieve

asOfTime - return the entity at this date, if null then now.

methodName - The name of the method being invoked

Returns:

response containing the RexExpandedEntityDetail object. Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception

getRelationship

public RexExpandedRelationship getRelationship(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String relationshipGUID,
 Date asOfTime,
 String methodName)
                                        throws RexViewServiceException

Retrieve relationship (by GUID) from the repository server

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

relationshipGUID - the GUID of the relationship to retrieve

asOfTime - return the relationship at this date, if null then now.

methodName - The name of the method being invoked

Returns:

response containing the RexExpandedEntityDetail object. Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception

findEntities

public Map<String,RexEntityDigest> findEntities(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String searchText,
 String entityTypeName,
 List<String> classificationNames,
 Date asOfTime,
 String methodName)
                                         throws RexViewServiceException

Retrieve entities (by text search) from the repository server

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

searchText - the search expression that entities must match

entityTypeName - the name of a type used to filter the entity search

classificationNames - classification names to limit find by

asOfTime - return the entities at this date, if null then now.

methodName - The name of the method being invoked

Returns:

a map of entity digests for the entities that matched the search Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception

findRelationships

public Map<String,RexRelationshipAndEntitiesDigest> findRelationships(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String searchText,
 String relationshipTypeName,
 Date asOfTime,
 String methodName)
                                                               throws RexViewServiceException

Retrieve relationships (by text search) from the repository server

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

searchText - the search expression that relationships must match

relationshipTypeName - the name of a type used to filter the relationship search

asOfTime - return the relationships at this date, if null then now.

methodName - The name of the method being invoked

Returns:

a map of relationship digests for the relationships that matched the search Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception

preTraversal

public RexPreTraversal preTraversal(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String entityGUID,
 int depth,
 long asOfTime,
 String methodName)
                             throws RexViewServiceException

Retrieve the neighborhood surrounding an entity for pre-traversal.

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

entityGUID - the identity of the entity from which to traverse

depth - the depth to which the method should traverse

asOfTime - return the entities and relationships at this date, if null then now.

methodName - The name of the method being invoked

Returns:

a RexTraversal object containing the neighborhood information Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception

traversal

public RexTraversal traversal(String userId,
 String repositoryServerName,
 String platformName,
 boolean enterpriseOption,
 String entityGUID,
 int depth,
 List<String> entityTypeGUIDs,
 List<String> relationshipTypeGUIDs,
 List<String> classificationNames,
 long asOfTime,
 String methodName)
                       throws RexViewServiceException

Retrieve the neighborhood surrounding an entity.

Parameters:

userId - userId under which the request is performed

repositoryServerName - The name of the repository server to interrogate

platformName - The name of the platform running the repository server to interrogate

enterpriseOption - Whether the query is at cohort level or server specific

entityGUID - the identity of the entity from which to traverse

depth - the depth to which the method should traverse

entityTypeGUIDs - the GUIDs of entity types to filter the neighborhood

relationshipTypeGUIDs - the GUIDs of relationship types to filter the neighborhood

classificationNames - the names of classification types to filter the neighborhood

asOfTime - return the entities and relationships at this date, if null then now.

methodName - The name of the method being invoked

Returns:

a RexTraversal object containing the neighborhood information Exceptions

Throws:

RexViewServiceException - an error was detected and details are reported in the exception