F retrieve identified

Summary

Minor change: The function retrieve_identified_record_for_record now only creates an identifiable if necessary, i.e. if no path and no ID is available.

Test Environment

unit and int test

Check List for the Author

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• All automated tests pass
• Reference related issues https://gitlab.indiscale.com/caosdb/customers/geomar/management/-/issues/85
• Up-to-date CHANGELOG.md (or not necessary) (internal change; there is no reason not to do this)
• Up-to-date JSON schema (or not necessary)
• Appropriate user and developer documentation (or not necessary)
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  • How do I develop or debug the software? Assume novice developers.
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
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Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• Appropriate user and developer documentation (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

For further good practices have a look at our review guidelines.

src/doc/concepts.rst

@@ -173,3 +173,14 @@ Example:
 
 File Objects
 ============
+
+TODO
+
+Caching
++++++++
+
+The Crawler uses the cached library function ``cached_get_entity_by``. The
+cache is cleared automatically, when the Crawler does updates, but if you would
+run the same Python process indefinetely the Crawler would not see changes due
+to the Cache. Thus, please make sure to clear the cache if you create long
+running Python processes.