Copy constructor for result set and entity

Summary

These changes support a better handling of the ResultSet and Entity objects when their owners are to be deleted (e.g. in clients which delete transansaction due to end of the scope of a function while they return an entity or the resultset of said transaction)

These changes are needed for caosdb-julialib!12 (merged)

The server is just being updated for version-compatibility reasons: caosdb-server!31 (merged)

Focus

• Refactoring of the ResultSet and Entity class' copy constructors (amd a general clean-up of the Entity constructor)
• Additional Transaction::ReleaseResultSet and ResultSet::release_at methods which release the unique_ptr from their owning objects.

Test Environment

• CPP Integration tests in caosdb-cppinttest!15 (merged)
• Julia integration tests in

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• All automated tests pass
• Reference related Issues
• [ ] Up-to-date CHANGELOG.md
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  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• [ ] Up-to-date CHANGELOG.md
• 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.

changed target branch from dev to f-int64

mentioned in issue #20 (closed)

added 1 commit

• ef20b937 - Add missing declarations in ccaosdb.h

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added 1 commit

• 321264f5 - Add more declarations in ccaosdb.h

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deleted the f-int64 branch. This merge request now targets the dev branch

added 3 commits

• 750f1f6d - 1 commit from branch dev
• d5c81f98 - Merge branch 'dev' into f-copy-entity
• fe4b2125 - Remove unused code

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added 2 commits

• 1f50e469 - 1 commit from branch dev
• fc7ea0a9 - Merge branch 'dev' into f-copy-entity

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changed the description

added 1 commit

• 124f28f3 - DOC: add more doc strings

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changed the description

marked the checklist item Reference related Issues as completed

marked the checklist item Annotations in code (Gitlab comments) as completed

requested review from @florian

mentioned in merge request caosdb-server!31 (merged)

added 2 commits

• 9365fe65 - 1 commit from branch dev
• 314bd34f - Merge branch 'dev' into f-copy-entity

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marked the checklist item All automated tests pass as completed

resolved all threads

added 1 commit

• b2c97e0a - DOC: Add remark on release functions to C-API documentation

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marked the checklist item I understand the intent of this MR as completed

marked the checklist item The test environment setup works and the intended behavior is as completed

marked the checklist item In-code documentation and comments are up-to-date. as completed

marked the checklist item Check: Are there specifications? Are they satisfied? as completed

enabled an automatic merge when the pipeline for b2c97e0a succeeds

mentioned in commit b756e4a9

merged