AS400JDBCParameterMetaData class

The AS400JDBCParameterMetaData class enables your programs to retrieve information about the properties of parameters in PreparedStatement and CallableStatement objects.

AS400JDBCParameterMetaData provides methods that allow you to perform the following actions:

• Get the class name of the parameter
• Get the number of parameters in the PreparedStatement
• Get the SQL type of the parameter
• Get the database-specific type name for the parameter
• Get the precision or the scale of the parameter

Example: Using AS400JDBCParameterMetaData

The following example shows one way to use AS400JDBCParameterMetaData to retrieve parameters from a dynamically generated PreparedStatement object:

     // Get a connection from the driver.
     Class.forName("com.ibm.as400.access.AS400JDBCDriver");
     Connection connection = 
        DriverManager.getConnection("jdbc:as400://myAS400", "myUserId", "myPassword");

     // Create a prepared statement object.
     PreparedStatement ps =
        connection.prepareStatement("SELECT STUDENTS FROM STUDENTTABLE WHERE STUDENT_ID= ?");

     // Set a student ID into parameter 1.
     ps.setInt(1, 123456);

     // Retrieve the parameter meta data for the prepared statement.
     ParameterMetaData pMetaData = ps.getParameterMetaData();

     // Retrieve the number of parameters in the prepared statement.
     // Returns 1.
     int parameterCount = pMetaData.getParameterCount();

     // Find out what the parameter type name of parameter 1 is.
     // Returns INTEGER.
     String getParameterTypeName = pMetaData.getParameterTypeName(1);