MDTranslator ISO19115-2 to DCATUS: identifier

[FuhuXia]

User Story

In order to transform ISO19115-2 documents into DCATUS using mdtranslator, datagov wants to add processing for identifier

Acceptance Criteria

• [x] GIVEN the DCATUS identifier field \ AND how the DCATUS writer expects to find the data within the internal metadata object WHEN the associated ISO19115-2 reader ruby modules are created THEN identifier should be transformed from ISO19115-2 to DCATUS

Background

• related to #4862
• We process 291017 ISO19115-2 datasets. We want all our datasets to be in DCATUS.
• This reader is not intended to be feature complete according to the ISO19115-2 standard. All we're looking to read is as much as the DCATUS writer expects.
• ISO19115-3 development workflow

Security Considerations (required)

None

Sketch

[rshewitt]

• "identifier" in citation is a MD_Identifier_PropertyType and is declared in referencesystem. copy link to highlight doesn't appear to work for this kind of document.
• for this ticket you'll need to create an identification module ( here's the equivalent module for the writer ). the dcatus writer looks for a namespace value associated with the identifier but only a RS_Identifier_Type has a codespace/namespace property so you don't have to process it