X-Git-Url: https://git.openstreetmap.org./osqa.git/blobdiff_plain/f8bdcf43ec75e04c30cb26e6c35e1a9f3cf262be..15eabbf86190e4bc8ae9dc747d853b0300976b12:/forum_modules/pgfulltext/pg_fts_install.sql

diff --git a/forum_modules/pgfulltext/pg_fts_install.sql b/forum_modules/pgfulltext/pg_fts_install.sql
index 21cbf95..c046870 100644
--- a/forum_modules/pgfulltext/pg_fts_install.sql
+++ b/forum_modules/pgfulltext/pg_fts_install.sql
@@ -1,84 +1,129 @@
-  CREATE OR REPLACE FUNCTION public.create_plpgsql_language ()
-      RETURNS TEXT
-      AS $$
-          CREATE LANGUAGE plpgsql;
-          SELECT 'language plpgsql created'::TEXT;
-      $$
-  LANGUAGE 'sql';
-
-  SELECT CASE WHEN
-        (SELECT true::BOOLEAN
-           FROM pg_language
-          WHERE lanname='plpgsql')
-      THEN
-        (SELECT 'language already installed'::TEXT)
-      ELSE
-        (SELECT public.create_plpgsql_language())
-      END;
-
-  DROP FUNCTION public.create_plpgsql_language ();
-
-  CREATE OR REPLACE FUNCTION node_ranking(node_id int, srch text) RETURNS float AS $$
-  declare
-     v tsvector;
-  begin
-     SELECT tsv INTO v FROM forum_node WHERE id = node_id;
-     RETURN ts_rank_cd(v || children_tsv(node_id), plainto_tsquery(srch), 32);
-  end
-  $$ LANGUAGE plpgsql;
-
-  CREATE OR REPLACE FUNCTION children_tsv(id int) RETURNS tsvector AS $$
-    declare
-      v tsvector := ''::tsvector;
-      r record;
-    begin
-      FOR r IN SELECT * FROM forum_node WHERE parent_id = id LOOP
-        v := v || r.tsv || children_tsv(r.id);
-      END LOOP;
-      RETURN v;
-    end
-  $$ LANGUAGE plpgsql;
-
-  CREATE OR REPLACE FUNCTION set_node_tsv() RETURNS TRIGGER AS $$
-  begin
-    IF (tg_op = 'INSERT') THEN
-      new.tsv :=
-         setweight(to_tsvector('english', coalesce(new.tagnames,'')), 'A') ||
-         setweight(to_tsvector('english', coalesce(new.title,'')), 'B') ||
-         setweight(to_tsvector('english', coalesce(new.body,'')), 'C');
-    ELSIF (new.active_revision_id <> old.active_revision_id) OR (new.tsv IS NULL) THEN
-      new.tsv :=
-         setweight(to_tsvector('english', coalesce(new.tagnames,'')), 'A') ||
-         setweight(to_tsvector('english', coalesce(new.title,'')), 'B') ||
-         setweight(to_tsvector('english', coalesce(new.body,'')), 'C'); 
+CREATE OR REPLACE FUNCTION public.create_plpgsql_language ()
+    RETURNS TEXT
+    AS $$
+        CREATE LANGUAGE plpgsql;
+        SELECT 'language plpgsql created'::TEXT;
+    $$
+LANGUAGE 'sql';
+
+SELECT CASE WHEN
+      (SELECT true::BOOLEAN
+         FROM pg_language
+        WHERE lanname='plpgsql')
+    THEN
+      (SELECT 'language already installed'::TEXT)
+    ELSE
+      (SELECT public.create_plpgsql_language())
+    END;
+
+DROP FUNCTION public.create_plpgsql_language ();
+
+CREATE OR REPLACE FUNCTION public.drop_tsv_noderevision_column () RETURNS VOID AS $$
+begin
+        ALTER TABLE forum_noderevision DROP COLUMN tsv;
+        DROP TRIGGER IF EXISTS tsvectorupdate ON forum_noderevision;
+end
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION public.tsv_noderevision_column_exists() RETURNS int AS $$
+ SELECT COUNT(attname)::int FROM pg_attribute WHERE attrelid = (SELECT oid FROM pg_class WHERE relname = 'forum_noderevision') AND attname = 'tsv';
+$$ LANGUAGE 'sql';
+
+select case when public.tsv_noderevision_column_exists()>0 then public.drop_tsv_noderevision_column()end;
+
+drop function drop_tsv_noderevision_column();
+drop function tsv_noderevision_column_exists();
+
+CREATE OR REPLACE FUNCTION set_doctable_tsv() RETURNS TRIGGER AS $$
+declare
+  root_id int;
+  doc tsvector;
+  rcount int;
+  cv tsvector;
+begin
+    SELECT abs_parent_id INTO root_id FROM forum_node WHERE id = new.node_id;
+
+    IF root_id IS NULL THEN
+	  root_id := new.node_id;
+    END IF;
+
+    SELECT count(*)::int INTO rcount FROM forum_node WHERE id = root_id;
+
+    IF rcount = 0 THEN
+        return new;
     END IF;
-    RETURN new;
-  end
-  $$ LANGUAGE plpgsql;
 
-  CREATE OR REPLACE FUNCTION public.create_tsv_node_column ()
-      RETURNS TEXT
-      AS $$
-          ALTER TABLE forum_node ADD COLUMN tsv tsvector;
+    SELECT
+      setweight(to_tsvector('english', coalesce(tagnames,'')), 'A') ||
+      setweight(to_tsvector('english', coalesce(title,'')), 'B') ||
+      setweight(to_tsvector('english', coalesce(body,'')), 'C') INTO doc
+      FROM forum_node WHERE id = root_id;
+
+    SELECT count(*)::int INTO rcount FROM forum_node WHERE abs_parent_id = root_id AND (NOT state_string LIKE '%%deleted%%');
+
+    IF rcount > 0 THEN
+       FOR cv in SELECT setweight(to_tsvector('english', coalesce(body,'')), 'C') FROM forum_node WHERE abs_parent_id = root_id  AND (NOT state_string LIKE '%%deleted%%') LOOP
+           doc :=(doc || cv);
+       END LOOP;
+     END IF;
+
+    SELECT count(*)::int INTO rcount FROM forum_rootnode_doc WHERE node_id = root_id;
+
+    IF rcount > 0 THEN
+       UPDATE forum_rootnode_doc SET document = doc WHERE node_id = root_id;
+    ELSE
+       INSERT INTO forum_rootnode_doc (node_id, document) VALUES (root_id, doc);
+    END IF;
+
+  RETURN new;
+end
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION public.build_doc_table() RETURNS VOID as $$
+  CREATE TABLE forum_rootnode_doc
+  (
+     node_id integer,
+     "document" tsvector,
+      PRIMARY KEY (node_id),
+      FOREIGN KEY (node_id) REFERENCES forum_node (id)    ON UPDATE NO ACTION ON DELETE NO ACTION
+  ) WITH (OIDS=FALSE);
+
+  DROP TRIGGER IF EXISTS tsvectorupdate ON forum_noderevision;
+
+  CREATE TRIGGER tsvectorupdate BEFORE INSERT OR UPDATE
+    ON forum_noderevision FOR EACH ROW EXECUTE PROCEDURE set_doctable_tsv();
+
+  CREATE INDEX doctable_tsv ON forum_rootnode_doc USING gin(document);
+$$ LANGUAGE 'sql';
 
-          CREATE TRIGGER tsvectorupdate BEFORE INSERT OR UPDATE
-	        ON forum_node FOR EACH ROW EXECUTE PROCEDURE set_node_tsv();
+CREATE OR REPLACE FUNCTION public.doc_table_exists() RETURNS int AS $$
+ SELECT COUNT(table_name)::int FROM information_schema.tables WHERE table_name = 'forum_rootnode_doc';
+$$ LANGUAGE 'sql';
 
-	      CREATE INDEX node_tsv ON forum_node USING gin(tsv);
+select case when public.doc_table_exists()=0 then public.build_doc_table()end;
 
-          SELECT 'tsv column created'::TEXT;
-      $$
-  LANGUAGE 'sql';
+drop function build_doc_table();
+drop function doc_table_exists();
 
-  SELECT CASE WHEN
-     (SELECT true::BOOLEAN FROM pg_attribute WHERE attrelid = (SELECT oid FROM pg_class WHERE relname = 'forum_node') AND attname = 'tsv')
-  THEN
-     (SELECT 'Tsv column already exists'::TEXT)
-  ELSE
-     (SELECT public.create_tsv_node_column())
+CREATE OR REPLACE FUNCTION rank_exact_matches(rank float) RETURNS float AS $$
+begin
+	IF rank = 0 THEN
+		return 1;
+	ELSE
+		return rank;
+	END IF;
 
-  END;
+end
+$$ LANGUAGE plpgsql;
 
-  DROP FUNCTION public.create_tsv_node_column ();
+CREATE OR REPLACE FUNCTION public.rebuild_index() RETURNS VOID as $$
+	DECLARE
+		r integer;
+	BEGIN
+		FOR r IN SELECT active_revision_id FROM forum_node WHERE node_type = 'question' LOOP
+			UPDATE forum_noderevision SET id = id WHERE id = r;
+		END LOOP;
+	END
+$$ LANGUAGE 'plpgsql';
 
-  UPDATE forum_node SET id=id WHERE TRUE;
+SELECT rebuild_index();