
CREATE OR REPLACE FUNCTION store_db (VARCHAR) 
  RETURNS INT AS 
'DECLARE
   v_name             ALIAS FOR $1;

   v_db_id            INTEGER;
 BEGIN
    SELECT INTO v_db_id db_id
      FROM db
      WHERE name=v_name;
    IF NOT FOUND THEN
      INSERT INTO db
       (name)
         VALUES
       (v_name);
       RETURN currval(''db_db_id_seq'');
    END IF;
    RETURN v_db_id;
 END;
' LANGUAGE 'plpgsql';
  
CREATE OR REPLACE FUNCTION store_dbxref (VARCHAR,VARCHAR) 
  RETURNS INT AS 
'DECLARE
   v_dbname                ALIAS FOR $1;
   v_accession             ALIAS FOR $2;

   v_db_id                 INTEGER;
   v_dbxref_id             INTEGER;
 BEGIN
    SELECT INTO v_db_id
      store_db(v_dbname);
    SELECT INTO v_dbxref_id dbxref_id
      FROM dbxref
      WHERE db_id=v_db_id       AND
            accession=v_accession;
    IF NOT FOUND THEN
      INSERT INTO dbxref
       (db_id,accession)
         VALUES
       (v_db_id,v_accession);
       RETURN currval(''dbxref_dbxref_id_seq'');
    END IF;
    RETURN v_dbxref_id;
 END;
' LANGUAGE 'plpgsql';
  
