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• metadata_source is used to define a unique source (authority) for each namespace of metadata terms.
  • name should be fully qualified and universally unique.
• metadata_term table _mapping table provides both the term and its mapping to local metadata.
  • code should be unique within the given source.
  • metadata_class refers to the Java class for the metadata.
  • metadata_reference is a unique reference to the metadata within the class (e.g., uuid)
• metadata_set is used to define relating grouping of metadata similar to what OpenMRS has traditionally done within global properties and similar to FHIR's ValueSet for metadata terms.
  • sort_weight is used to optionally give members of a metadata set a reliable sequence.

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Retire term:

List<MetadataTerm>List<MetadataTermMapping> termstermMappings = metadataService.getMetadataTermsgetMetadataTermMappings(location);
metadataService.retireMapping(termstermMappings.get(0), "some reason");

Create term: 

MetadataSource source = metadataService.getSourceByName("SOME-SOURCE");
MetadataTermMetadataTermMapping termtermMapping = new MetadataTermMetadataTermMapping(source, "CODE", location);
metadataService.saveMetadataTermsaveMetadataTermMapping(termtermMapping);

Create terms in bulk:

List<MetadataTerm>List<MetadataTermMapping> termstermMappings = Arrays.asList(mapping1, mapping2, mapping3);
metadataService.saveMetadataTermssaveMetadataTermMappings(termstermMappings);

Get term by source and code:

MetadataTermMetadataTermMapping termtermMapping = metadataService.getMetdataTermgetMetadataTermMapping(mappingSource, "CODE");

Get terms by source:

List<MetadataTerm>List<MetadataTermMapping> termstermMappings = metadataService.getMetadataTermsgetMetadataTermMappings(source);

Get term by uuid:

MetadataTermMetadataTermMapping mappingtermMapping = metadataService.getMetadataTermByUuidgetMetadataTermMappingByUuid(String uuid);

Get source by uuid:

MetadataSource source = metadataService.getMetadataSourceByUuid(String uuid);

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MetadataTermMapping, MetadataSource, MetadataSet should support all CRUD operations.