feat: PolarDB graph backend with decomposed mixin architecture#1054
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feat: PolarDB graph backend with decomposed mixin architecture#1054anatolykoptev wants to merge 1 commit intoMemTensor:mainfrom
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Major graph_dbs module overhaul: 1. PolarDB backend (polardb/) — decomposed into mixin-based package: - connection.py: pool management with health checks and retries - schema.py: AGE extensions, tables, indexes - nodes.py: node CRUD + agtype parsing - edges.py: edge CRUD - filters.py: dual SQL/Cypher WHERE clause builders - search.py: keyword, fulltext, embedding search - traversal.py: neighbors, subgraph, paths - queries.py: metadata queries, counts - maintenance.py: import/export, clear, cleanup 2. Shared utilities (utils.py) — compose_node, prepare_node_metadata, convert_to_vector, detect_embedding_field, clean_properties 3. BaseGraphDB extended with additional abstract methods: get_edges, search_by_fulltext, get_neighbors_by_tag, delete_node_by_prams, get_user_names_by_memory_ids, exist_user_name, search_by_keywords_like, search_by_keywords_tfidf 4. Neo4j/Neo4j Community/Nebula backends updated to implement new abstract methods Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Overhaul of the
graph_dbs/module:polardb/package (11 files, ~4300 lines). Each mixin handles a logical concern (connection, nodes, edges, search, filters, etc.)utils.py): extracted common helpers used across backendsself.execute_query()incount_nodes()didn't exist — replaced with standard cursor patternPolarDB package structure
__init__.pyPolarDBGraphDBconnection.pyschema.pynodes.pyedges.pyfilters.pysearch.pytraversal.pyqueries.pymaintenance.pyhelpers.pyImport path unchanged
Test plan
BaseGraphDBabstract methods implemented in PolarDB (verified via AST)self.for cross-calls)🤖 Generated with Claude Code