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Relationship Update Profile

The performance of programmatically updating existing relationship instances.

The Open Metadata Repository Services (OMRS) interface for a metadata repository defines optional methods for updating relationship instances:

Method Description
updateRelationshipProperties changes one or more values of the properties on an existing relationship
updateRelationshipStatus changes the status of an existing relationship
ID Description
repository-relationship-update-performance-updateEntityProperties See (2) in detailed logic below.
repository-relationship-retype-performance-updateEntityProperties-remove See the detailed logic of the relationship retype profile.

Captures timestamp for historical metadata profiles

Prior to this profile running, a timestamp is captured by the performance workbench to denote a specific date and time prior to any updates having been made to the relationships.

For every entity type supported by the technology under test, this profile does the following (in order):

  1. Searches for instancesPerType relationships of that type. (This uses findRelationshipsByProperty with a condition on metadataCollectionId and its performance is recorded as part of the relationship search profile.)
  2. For each of these relationship instances, updateRelationshipProperties is called to update the existing property values of the relationship, using a new generated set of properties.


So, for example, if the technology under test supports 50 relationship types, and the instancesPerType parameter is set to 100, then this profile will update 50 (types) x 100 (instances per type) = 5000 relationships. (And it will run findRelationshipsByProperty 50 times.)

The properties of each of these instances will be fully-populated with:

  • Any string properties containing a value representative of the property name itself (and where unique, they will be made unique through appending a unique sequence)
  • Any non-string properties will be randomly generated, in a simple attempt to represent data that is not entirely uniform


Note the following caveats:

  • updateRelationshipStatus is currently not tested (there are very few types that support any status that can be updated outside of a delete or restore operation).
  • Relationship type definitions that have no properties will not be updated, since there are no properties to update.

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