Snow Owl v7.17.0

Core

• Code System API
  • Move to POST /upgrade endpoint (#808)
  • Support selecting Code System versions as sources when creating upgrades to let authors continue working on unpublished content without the need of fixing data at two places (#808, #822)
  • Create versions on non-working branches is now disabled (#799, #810)

SNOMED CT

• Support for SNOMED CT Concrete Value Specification (RF2 2021-07-31) (#811)
  • Add complete support for SNOMED International Concrete Value Specification, including import and export of the new der2_RelationshipConcreteValues RF2 file, searching concrete values using ECL expressions and editing then classifying concrete values.
• Add new ignoreMissingReferencesIn configuration option to RF2 file imports (#803)
  • This option can be used to define SNOMED CT Reference Set IDs when importing an RF2 archive where the selected Reference Sets might reference non-existent components. (eg. SNOMED CT UK Clinical Extension, UK Edition RF2 content often released with such reference set memberships)
• New POST /:path/label-expressions endpoint to label up one or more ECL expressions using the selected description type (FSN or PT) and locales (#814, #817)
• New validation rules (#801, #804)
  • Active terms should not contain double spaces
  • Active terms should be capitalized or have Entire term case sensitive case significance
  • Spacing around hyphens should be consistent in active terms
  • In active terms, spaces should not precede commas, colons, semicolons or full stops
  • Descriptions which are not Fully Specified Names should not contain semantic tags
  • The fully specified names of active concept should contain a bracketed suffix (semantic tag)
  • Terms should only contain ASCII characters
  • Fully specified names should not contain <, >, &, %, $, @, # characters
  • Synonyms should not contain $, @ characters
  • Brackets in active terms should balance and be sequentially valid (in correct order)
  • FSN terms should not duplicate other FSN terms, regardless of case
  • Synonyms should not duplicate other synonyms, regardless of case
  • Reference Sets should not contain retired concepts
  • Reference Sets should not contain retired descriptions

FHIR API

• Add initial support for FHIR Search Parameters, like _id, _name (#806)
• Add initial support for FHIR $validate-code operation endpoints (#816)

Bugs/Improvements

• [index] use segment diff to compute accurate base/head timestamps when merging empty branches (#807)
• [index] support indexing fields with type double (b275329)
• [index] don't create "null" strings when mapping results to String[] (c78a710)
• [index] support exlucing non-property type changes when comparing branches (#815, #818, #825)
• [index] cache rootField and fieldPaths to prevent recomputing them when processing larger commits (1cb9e6a)
• [index] compute property diffs only for FSNs during change processing to reduce memory pressure (fe6ed78)
• [core] improve concept map compare comment merge phase to avoid exponential complexity and never ending compares (67d20d6)
• [snomed] fixed an issue where importing released version of a component did not set the released flag to true after RF2 import (#802)
• [classification] commit classification relationship/concrete value changes in batches (#809)
• [quality] fix major and minor code smells (#819, #824) Thank you for the contribution @eranhash!

Dependencies

• Upgrade snomed-ecl to 1.4.3 (#826)