How to use CallableStatement in Java | Call store proc and functions with callable java
CallableStatement Java
Java Callable Statement interface is used to call the stored procedures and functions.We can have business logic on the database by the use of stored procedures and functions that will make the performance better because these are precompiled.Suppose you need the get the age of the employee based on the date of birth, you may create a function that receives date as the input and returns age of the employee as the output.we can call store proc and functions with callable Statement Java.
callable Statement Java Makes the performance of the java application better
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void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { try { // TODO add your handling code here final String query = "Select * from employee"; final String update_query = "Update employee set edesignation = ? where eno = ?"; final String proc_query = "{call getEmpName(?,?)}"; Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/testdb","root",""); CallableStatement stmt = conn.prepareCall(proc_query); stmt.setInt(1, 60); stmt.registerOutParameter(2,java.sql.Types.VARCHAR); stmt.execute(); String name = stmt.getString(2); JOptionPane.showMessageDialog(rootPane, name); } catch (SQLException ex) { Logger.getLogger(JdbcForm.class.getName()).log(Level.SEVERE, null, ex); } } Stored procedureDROP PROCEDURE `getEmpName`; CREATE DEFINER=`root`@`localhost` PROCEDURE `getEmpName`(IN `EMP_ID` INT, OUT `EMP_NAME` VARCHAR(255)) NOT DETERMINISTIC CONTAINS SQL SQL SECURITY DEFINER BEGIN SELECT ename INTO EMP_NAME FROM Employee WHERE eno = EMP_ID; END
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What is Callable Statement in JDBC?
The Callable Statement jdbc interface provides methods to execute the stored procedures. Since the JDBC API provides a stored procedure SQL escape syntax, you can call stored procedures of all RDBMS in single standard way.Creating a Callable Statement Java You can create an object of the Callable Statement jdbc (interface) using the prepareCall() method of the Connection interface. This method accepts a string variable representing a query to call the stored procedure and returns a Callable Statement Java object.A Callable statement in jdbc can have input parameters, output parameters or both.
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How to Use Callable Statement in Java to Call Stored Procedure?
The Callable Statement of JDBC API is used to call a stored procedure. A Callable statement in java can have output parameters, input parameters, or both. The prepareCall() method of connection interface will be used to create Callable Statement Java object.
Jdbc | Java & MySQL | How to use Callable Statement to Call Stored Procedures in Java
Callable Statement Java | Jdbc Callable Statement | Call store proc and functions with callable java
Callable Statement Java | Jdbc Callable Statement | Call store proc and functions with callable java
Callable Statement Java | Jdbc Callable Statement | Call store proc and functions with callable java
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