Rename Validator interface to QueryValidator.
Create new interface DataValidator.
Create new class RepositoryDataValidator as implemenation of DataValidator interface.
Update SPARQL validators - add comments, update message when query is valid.
Update TripleCountHandler
- add comments
- add logging for data validation
Update StatisticalHandler
- add/update comments
- add logging for data validation
Add String getErrorMessage to DataValidator.
Add implementation of getErrorMessage in RepositoryDataValidator.
Update TripleCount/Statistical handlers - split same code into methods.
Add variable validDataBefore to RDFLoaderConfig.
Add checkbox for validate data before loading in RDFLoaderDialog. Issue #414
Add test data validation before loading to SPARQL endpoint - issue #414.
Update TripleCountHandler - add logging to endRDF method.
Update StatisticalHandler logger in constructor.
Add getConnection method to RDFDataUnit interface.
Update visibility method getConnection in BaseRDFRepo.
Fix finded bugs in RepositoryDataValidator - issue #414.