Getting the count of rows present in the oracle table

Question

Hi all,
i want to get the total number of rows present in the sql table to the appmodule.
After applying the some view criteria to the view object. if it try with getallrowsinrange it was giving count of rows present in the viewobject but i want total number of rows present in the sql table.
How can i get that
I am using jdev 11.1.1.5
Thanks in advance

Answer 1

I threw something together, quick and dirty, feel free to optimize.
Assuming that you want the table count, I put the code into a EntityDefImpl subclass since this is what represents a table in the middle-tier.
public class EmpDefImpl
      extends EntityDefImpl {
   * This is the default constructor (do not remove).
  public EmpDefImpl( ) {}
  //~ Methods ****************************************************************************
  public long getTableRowCount( DBTransaction transaction ) {
    String query = getQuery( );
    String countQuery = String.format( "SELECT COUNT(*) FROM (%s)", query );
    long count = 0;
    ViewObject vo = transaction.createViewObjectFromQueryStmt( countQuery );
    try {
      vo.executeQuery( );
      Row row = vo.first( );
      Number number = (Number)row.getAttribute( 0 );
      count = number.longValue( );
    } finally {
      vo.remove( );
    return count;
}Depending on your type map, you might not get a oracle.jbo.domain.Number, but something else, so the cast might need correction.
Usage example:
public class EmpEditViewImpl extends ViewObjectImpl {
  public EmpEditViewImpl() {
  protected void executeQueryForCollection( Object object, Object[] object2, int i ) {
    super.executeQueryForCollection( object, object2, i );
    EmpDefImpl def = ( EmpDefImpl )getEntityDef( 0 );
    long tableRowCount = def.getTableRowCount( getDBTransaction() ) );
    // Do something with it
}As you can see, the code is pretty generic. You might also be able to put this into an ADF extension base class.
Sascha
Edited by: Sascha Herrmann on Jun 7, 2012 2:39 PM