feat: Add Apache AGE graph database extension #58
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Add support for Apache AGE (A Graph Extension) which brings graph database capabilities and Cypher query language to PostgreSQL. Changes: - Add AGE as submodule from jpabbuehl/age (32-bit WASM compatible fork) - Add AGE to SUBDIRS in pglite/Makefile - Export required hook symbols in included.pglite.imports: - post_parse_analyze_hook (Cypher parsing) - set_rel_pathlist_hook (query planning) - ProcessUtility_hook (DDL handling) - RegisterExtensibleNodeMethods (custom nodes) - object_access_hook (access control) - Add invoke_jii to excluded.pglite.imports (function pointer pattern) The AGE submodule points to a fork with 32-bit WASM compatibility: - graphid type uses pass-by-reference on 32-bit systems - Upstream PR pending at apache/age Related: electric-sql/pglite PR for TypeScript wrapper
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Summary
Add support for Apache AGE (A Graph Extension) which brings graph database capabilities and Cypher query language to PGlite.
Changes
Build Configuration
pglite/Makefileageto SUBDIRSpglite-wasm/included.pglite.importspglite-wasm/excluded.pglite.importsinvoke_jiipatternAGE Submodule
Added AGE as a submodule from
jpabbuehl/agebranchfeat/32bit-wasm-support.This fork includes 32-bit WASM compatibility patches:
graphid.h: Conditional pass-by-reference for 32-bit systemsage_main.sql: RemovedPASSEDBYVALUEfrom graphid typeUpstream PR pending: apache/age@master...jpabbuehl:age:feat/32bit-wasm-support
Symbol Exports
AGE requires these PostgreSQL hook symbols:
Also added
invoke_jiito excluded imports (AGE usesint64(*)(int,int)function pointer pattern).Technical Details
32-bit WASM Compatibility
PGlite compiles with
-m32(32-bit WASM). AGE'sgraphidtype is 8 bytes, which doesn't fit in a 32-bitDatum. The AGE fork includes:#if SIZEOF_DATUM >= 8
// 64-bit: pass by value (original)
#else
// 32-bit: pass by reference
#endif## Testing
age.tar.gzgenerated (140KB compressed)Related PRs
Checklist
./build-with-docker.sh