patrick
9a24ea29e1
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47 lines
2.2 KiB
SQL
47 lines
2.2 KiB
SQL
-- 024_ocr_words.sql
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-- Documentation only — applied via internal/storage/ocr_words.go
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-- (Store.initOCRWordsSchema), wired into Store.initSchema in documents.go.
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--
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-- Phase 2 of the OCR text-highlight/overlay feature (Phase 1: internal/ocr
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-- gained Result.Words []WordBox, coordinates already mapped back into the
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-- original uploaded file's coordinate space — see internal/ocr/coords.go).
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-- This migration adds the table that persists those word boxes per
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-- document, so a future Phase 3 read endpoint can serve them for a
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-- search-highlight/overlay UI without re-running OCR.
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--
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-- No tenant_id column: access is always mediated through document_id (join
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-- or verify against documents.tenant_id), never queried directly by tenant.
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--
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-- ON DELETE CASCADE on document_id: word boxes are a derived index over a
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-- document's OCR text/original file, not a GoBD document themselves, so
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-- cascading on hard-delete (trash workflow, see 007_trash.sql) is correct
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-- and does not affect WORM retention of the document's own storage_path/
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-- content_hash.
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--
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-- Every OCR (re)run (upload async job, manual reprocess endpoint, and the
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-- `documents reprocess-all` CLI, which shares ReprocessDocument with the
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-- endpoint) deletes this document's existing rows and re-inserts the fresh
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-- set (storage.ReplaceOCRWords), so re-OCR never accumulates duplicates.
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CREATE TABLE IF NOT EXISTS ocr_words (
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id BIGSERIAL PRIMARY KEY,
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document_id BIGINT NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
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page INTEGER NOT NULL DEFAULT 1,
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block INTEGER NOT NULL DEFAULT 0,
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par INTEGER NOT NULL DEFAULT 0,
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line INTEGER NOT NULL DEFAULT 0,
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word_text TEXT NOT NULL,
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"left" INTEGER NOT NULL,
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top INTEGER NOT NULL,
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width INTEGER NOT NULL,
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height INTEGER NOT NULL,
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confidence DOUBLE PRECISION NOT NULL DEFAULT 0
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);
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CREATE INDEX IF NOT EXISTS idx_ocr_words_document ON ocr_words (document_id);
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-- Plain btree, not pg_trgm/GIN: initSchema cannot assume CREATE EXTENSION
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-- privileges on the live server. Revisit if Phase 3 needs fuzzy/substring
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-- prefiltering (would require enabling pg_trgm out-of-band first).
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CREATE INDEX IF NOT EXISTS idx_ocr_words_word_text ON ocr_words (word_text);
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