Initial commit

2022-12-07 04:43:36 +01:00
commit 257f3c354f
496 changed files with 55373 additions and 0 deletions
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+DROP TABLE IF EXISTS entry_version_history;
+
+CREATE TABLE entry_version_history (
+  entry_id INT REFERENCES entry ON DELETE CASCADE,
+  version SMALLINT,
+  version_time TIMESTAMPTZ,
+  version_snapshot JSONB NOT NULL,
+  PRIMARY KEY (entry_id, version)
+);
+
+CREATE OR REPLACE FUNCTION create_entry_version_snapshot()
+RETURNS TRIGGER AS $$
+DECLARE
+  _num_of_history_entires_per_entry SMALLINT;
+BEGIN
+  -- Create a snapshot of old entry data.
+  INSERT INTO entry_version_history (entry_id, version, version_time, version_snapshot)
+  VALUES (
+    OLD.id,
+    OLD.version,
+    OLD.time_modified,
+    (
+      SELECT
+        jsonb_strip_nulls(
+          jsonb_build_object(
+            'is_valid', e.is_valid,
+            'is_published', e.is_published,
+            'is_terminology_reviewed', e.is_terminology_reviewed,
+            'is_language_reviewed', e.is_language_reviewed,
+            'status', e.status,
+            'term', e.term,
+            'version', e.version,
+            'version_author', e.version_author,
+            'homonym_sort', e.homonym_sort,
+            'label', e.label,
+            'definition', e.definition,
+            'synonyms', e.synonym,
+            'other', e.other,
+            'image', e.image,
+            'audio', e.audio,
+            'video', e.video,
+            'domain_labels', ARRAY(
+              SELECT name
+              FROM entry_domain_label edl
+              LEFT JOIN domain_label dl ON dl.id = edl.domain_label_id
+              WHERE entry_id = e.id
+            ),
+            'links', ARRAY(
+              SELECT jsonb_build_object(
+                'type', type,
+                'link', link
+              )
+              FROM entry_link
+              WHERE entry_id = e.id
+            ),
+            'foreign_entries', ARRAY(
+              SELECT jsonb_strip_nulls(
+                jsonb_build_object(
+                  'language_id', language_id,
+                  'term', term,
+                  'definition', definition,
+                  'synonym', synonym
+                )
+              )
+              FROM entry_foreign
+              WHERE entry_id = e.id
+            )
+          )
+        )
+      FROM entry e
+      WHERE e.id = OLD.id
+    )
+  );
+
+  -- Get the current limit of snapshots per entry.
+  SELECT value::smallint
+  INTO _num_of_history_entires_per_entry
+  FROM instance_settings
+  WHERE name = 'num_of_history_entires_per_entry';
+
+  -- Prune any (oldest) snapshots of this entry over the limit.
+  IF _num_of_history_entires_per_entry >= 0 THEN
+    DELETE FROM entry_version_history
+    WHERE entry_id = OLD.id AND version IN (
+      SELECT version
+      FROM entry_version_history
+      WHERE entry_id = OLD.id
+      ORDER BY version DESC
+      OFFSET _num_of_history_entires_per_entry
+    );
+  END IF;
+
+  -- Increase version.
+  NEW.version = OLD.version + 1;
+
+  RETURN NEW;
+END
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER entry_version_history_create_snapshot
+BEFORE UPDATE
+ON entry
+FOR EACH ROW
+WHEN (current_setting('term_portal.skip_create_version_history_snapshot', TRUE) IS DISTINCT FROM 'TRUE')
+EXECUTE FUNCTION create_entry_version_snapshot();