Package org.odpi.openmetadata.commonservices.repositoryhandler

Class RepositoryEntitiesIterator

java.lang.Object

org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryIteratorForEntities

org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryEntitiesIterator

public class RepositoryEntitiesIterator
extends RepositoryIteratorForEntities

RepositoryEntitiesIterator is an iterator class for iteratively retrieving entities (possibly restricting the type of entities returned). It is used where the caller needs to filter the results coming from the repository and may need to make more than one call to the repository in order to accumulate the number of requested results. Note this class is intended for a single request's use - it is not thread-safe.

Field Summary

Fields inherited from class org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryIteratorForEntities

effectiveTime, entitiesCache, entityTypeGUID, entityTypeName, forDuplicateProcessing, forLineage, methodName, pageSize, repositoryHandler, sequencingPropertyName, startingFrom, userId

Constructor Summary

Constructors

Constructor	Description
RepositoryEntitiesIterator(RepositoryHandler repositoryHandler, String userId, String entityTypeGUID, String entityTypeName, String sequencingPropertyName, boolean forLineage, boolean forDuplicateProcessing, int startingFrom, int pageSize, Date effectiveTime, String methodName)	Constructor takes the parameters used to call the repository handler.

Method Summary

Modifier and Type	Method	Description
boolean	moreToReceive()	Determine if there is more to receive.

Methods inherited from class org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryIteratorForEntities

getNext

Methods inherited from class java.lang.Object

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

Constructor Detail

RepositoryEntitiesIterator

public RepositoryEntitiesIterator(RepositoryHandler repositoryHandler,
                                  String userId,
                                  String entityTypeGUID,
                                  String entityTypeName,
                                  String sequencingPropertyName,
                                  boolean forLineage,
                                  boolean forDuplicateProcessing,
                                  int startingFrom,
                                  int pageSize,
                                  Date effectiveTime,
                                  String methodName)

Constructor takes the parameters used to call the repository handler.

Parameters:

repositoryHandler - interface to the open metadata repositories.

userId - user making the request

entityTypeGUID - identifier for the relationship to follow

entityTypeName - type name for the relationship to follow

sequencingPropertyName - name of property used to sequence the results - null means no sequencing

forLineage - the request is to support lineage retrieval this means entities with the Memento classification can be returned

forDuplicateProcessing - the request is for duplicate processing and so must not deduplicate

startingFrom - initial position in the stored list.

pageSize - maximum number of definitions to return on this call.

effectiveTime - the time that the retrieved elements must be effective for

methodName - name of calling method

Method Detail

moreToReceive

public boolean moreToReceive()
                      throws UserNotAuthorizedException,
                             PropertyServerException

Determine if there is more to receive. It will populate the iterator's cache with more content.

Specified by:

moreToReceive in class RepositoryIteratorForEntities

Returns:

boolean flag

Throws:

UserNotAuthorizedException - the repository is not allowing the user to access the metadata

PropertyServerException - there is a problem in the repository