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added downloader.
- Implement ISNIDownloader that fixes JSON-LD structure issues: - Removes control characters (\x1e, \x1f, \x1d) that break JSON parsing - Converts array of separate JSON-LD objects to single proper JSON-LD document - Consolidates multiple @context definitions into one - Combines all @graph entities into a single array - Maintains original data format while making it parseable by standard JSON-LD libraries - Compatible with actual BaseDownloader interface (overrides process method) - Add comprehensive test workflow that validates the complete pipeline - Successfully tested with real ISNI data: 1.8M records → 5.5M entities - Achieves 7% file size reduction while fixing structure
…memory. mapper is now built and ready for testing.
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Adds support for ISNI as a new source in Lux. This PR's mapper allows you to map individual records to Lux from ISNI. To get the data in the correct format, however, you will want to look at the downloader, which handles converting the ISNI JSONLD format into standard JSONLD while also trimming down the data to the core components necessary. This also reduces the file size from 20Gb to ~13GB for people, for example.