Implement date time arithmetic
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- Dominant language
- Java
- Stars
- 114
- Forks
- 18
- PR merge metrics
- No merged PRs in 30d
Description
It would be useful to have date time arithmetic implemented in Halyard. SPARQL 1.1 supports it only for numeric data types, see XPath arithmetic. More details can be found in w3c/sparql-12#32 and w3c/sparql-12#55. The implementation can use the tests here.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the SPARQL 1.1 Operator Mapping and the linked w3c/sparql-12 discussions to define the supported date-time operations. Use the xsd_datetime_duration/tests/xsd_functions tests as the behavioral reference. Done means Halyard implements the requested SPARQL date-time arithmetic and passes the relevant tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- databases
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100