OceanBase 調(diào)用 PL 存儲(chǔ)過(guò)程

// JDBC 轉(zhuǎn)義語(yǔ)法
CallableStatement ecs1 = conn.prepareCall
                       ( "{call proc (?,?)}" ) ; // 存儲(chǔ)過(guò)程
CallableStatement ecs2 = conn.prepareCall
                       ( "{? = call func (?,?)}" ) ; // 存儲(chǔ)函數(shù)
// PL 塊語(yǔ)法
CallableStatement ecs3 = conn.prepareCall
                       ( "begin proc (?,?); end;" ) ; // 存儲(chǔ)過(guò)程
CallableStatement ecs4 = conn.prepareCall
                       ( "begin ? := func(?,?); end;" ) ; // 存儲(chǔ)函數(shù)

OceanBaseDataSource obds = new OceanBaseDataSource();
obds.setURL("jdbc:oceanbase:oracle://連接串:1521/用戶名");
obds.setUser("Adam");
obds.setPassword("P@ssw0rd");
Connection conn = obds.getConnection();

CallableStatement cs = conn.prepareCall ("begin ? := f(?); end;");
cs.registerOutParameter(1,Types.CHAR);
cs.setString(3, "aaa");
cs.executeUpdate();
String result = cs.getString(1);

CREATE OR REPLACE FUNCTION f (v CHAR)
RETURN CHAR AS
BEGIN
   RETURN v || 'suffix';
END;