feat(sru): enhance CQL search capabilities and performance #4027
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* SRU CQL Parser (cql_parser.py):
- Add 4 new Dublin Core search indexes:
- dc.note → note.label (MARC 500)
- dc.tableofcontents → tableOfContents (MARC 505)
- dc.abstract → summary.label (MARC 520)
- dc.dissertation → dissertation.label (MARC 502)
- Add ES_SORT_MODIFIERS for sort order mapping (ascending/descending)
- Add ES_SORT_INDEX_MAPPINGS for sortable field mappings
- Add SUPPORTED_RELATION_MODIFIERS and UNSUPPORTED_RELATION_MODIFIERS
- Fix typos: SERVER_CHOISE → SERVER_CHOICE
* SRU Explain (explaine.py):
- Add _ES_MAPPINGS_CACHE module-level dictionary for caching
- Implement ES mappings caching in __init__ to avoid repeated file I/O
- Fix unsafe open() call by using context manager
* SRU Views (views.py):
- Add EXPLAIN_CACHE_MAX_AGE (3600s) and SEARCH_CACHE_MAX_AGE (60s) constants
- Add hashlib import for cache key generation
* MARC 21 Serializer (marc.py):
- Add authority control numbers ($0) to MARC 650__ and 655__ fields
- Extract $ref from TOPIC and genreForm entities for authority links
Co-Authored-By: Peter Weber <[email protected]>
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SRU CQL Parser (cql_parser.py):
SRU Explain (explaine.py):
SRU Views (views.py):
MARC 21 Serializer (marc.py):