test

Using Database Operations

The Query (Select) Operation

ProcedureTo perform a query operation on a table:

  1. Execute the select() method with the “where” clause specified if necessary.

  2. Loop through the ResultSet using the next() method.

  3. Process the return record within a while() loop.

    For example:


    package prjSybase_JCDjcdALL;


public class jcdTableSelect
{

    public com.stc.codegen.logger.Logger logger;

    public com.stc.codegen.alerter.Alerter alerter;

    public com.stc.codegen.util.CollaborationContext collabContext;

    public com.stc.codegen.util.TypeConverter typeConverter;

    public void receive( com.stc.connector.appconn.file.
FileTextMessage input, dtd.otdOutputDTD1325973702.DB_Employee
 otdOutputDTD_DB_Employee_1, otdSybase.OtdSybaseOTD otdSybase_1,
 com.stc.connector.appconn.file.FileApplication FileClient_1 )
        throws Throwable
    {
        FileClient_1.setText( "Selecting records from db_employee
 table via Table Select........" );
        FileClient_1.write();
        otdSybase_1.getDb_employee().select( input.getText() );
        while (otdSybase_1.getDb_employee().
next()) {
            otdOutputDTD_DB_Employee_1.setEmpNo( typeConverter.
shortToString( otdSybase_1.getDb_employee().getEMP_NO(), "#",
 false, "" ) );
            otdOutputDTD_DB_Employee_1.setLastname(
 otdSybase_1.getDb_employee().getLAST_NAME() );
            otdOutputDTD_DB_Employee_1.setFirstname(
 otdSybase_1.getDb_employee().getFIRST_NAME() );
            otdOutputDTD_DB_Employee_1.setRate(
 otdSybase_1.getDb_employee().getRATE().toString() );
            otdOutputDTD_DB_Employee_1.setLastDate(
 typeConverter.dateToString( otdSybase_1.getDb_employee().
getLAST_UPDATE(), "yyyy-MM-dd hh:mm:ss", false, "" ) );
            FileClient_1.setText( otdOutputDTD_DB_Employee_1.
marshalToString() );
            FileClient_1.write();
        }
        FileClient_1.setText( "Table Select Done." );
        FileClient_1.write();
    }

}