4f8996cd82
Add PostgreSQL full-text search alongside pgvector for exact matches on Jira keys, error messages, file paths. Merge results with Reciprocal Rank Fusion. Default mode: hybrid, with graceful degradation to keyword-only when embeddings unavailable. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
54 lines
2.5 KiB
PL/PgSQL
54 lines
2.5 KiB
PL/PgSQL
-- CF-1315: Hybrid search - tsvector columns, GIN indexes, triggers
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-- 1. Add search_vector columns
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ALTER TABLE project_archives ADD COLUMN IF NOT EXISTS search_vector tsvector;
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ALTER TABLE memories ADD COLUMN IF NOT EXISTS search_vector tsvector;
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ALTER TABLE sessions ADD COLUMN IF NOT EXISTS search_vector tsvector;
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-- 2. GIN indexes for fast full-text search
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CREATE INDEX IF NOT EXISTS idx_archives_search_vector ON project_archives USING gin(search_vector);
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CREATE INDEX IF NOT EXISTS idx_memories_search_vector ON memories USING gin(search_vector);
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CREATE INDEX IF NOT EXISTS idx_sessions_search_vector ON sessions USING gin(search_vector);
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-- 3. Triggers to auto-populate search_vector on INSERT/UPDATE
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CREATE OR REPLACE FUNCTION update_archives_search_vector() RETURNS TRIGGER AS $$
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BEGIN
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NEW.search_vector := to_tsvector('english', coalesce(NEW.title, '') || ' ' || coalesce(NEW.content, ''));
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION update_memories_search_vector() RETURNS TRIGGER AS $$
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BEGIN
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NEW.search_vector := to_tsvector('english', coalesce(NEW.title, '') || ' ' || coalesce(NEW.content, ''));
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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CREATE OR REPLACE FUNCTION update_sessions_search_vector() RETURNS TRIGGER AS $$
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BEGIN
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NEW.search_vector := to_tsvector('english', coalesce(NEW.summary, ''));
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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DROP TRIGGER IF EXISTS trg_archives_search_vector ON project_archives;
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CREATE TRIGGER trg_archives_search_vector
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BEFORE INSERT OR UPDATE OF title, content ON project_archives
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FOR EACH ROW EXECUTE FUNCTION update_archives_search_vector();
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DROP TRIGGER IF EXISTS trg_memories_search_vector ON memories;
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CREATE TRIGGER trg_memories_search_vector
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BEFORE INSERT OR UPDATE OF title, content ON memories
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FOR EACH ROW EXECUTE FUNCTION update_memories_search_vector();
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DROP TRIGGER IF EXISTS trg_sessions_search_vector ON sessions;
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CREATE TRIGGER trg_sessions_search_vector
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BEFORE INSERT OR UPDATE OF summary ON sessions
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FOR EACH ROW EXECUTE FUNCTION update_sessions_search_vector();
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-- 4. Backfill existing rows (no-op if tables empty, safe to re-run)
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UPDATE project_archives SET search_vector = to_tsvector('english', coalesce(title, '') || ' ' || coalesce(content, '')) WHERE search_vector IS NULL;
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UPDATE memories SET search_vector = to_tsvector('english', coalesce(title, '') || ' ' || coalesce(content, '')) WHERE search_vector IS NULL;
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UPDATE sessions SET search_vector = to_tsvector('english', coalesce(summary, '')) WHERE search_vector IS NULL AND summary IS NOT NULL;
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