Bug 141961 All default column binding names for data are the same
Steps to reproduce: 1.Add a data. In the pops up window, add a column binding, "[result_set_col_name]" is given as the default column binding name 2.Add another column binding Expected result: Another different column binding name is given Actual result: The same column binding name is given An exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.N20060516-1213 Error Code:Error.PropertyValueException.VALUE_EXISTS Error Message:The value "[result_set_col_name]" already exists.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
else if ( obj instanceof ComputedColumnHandle )
					{
						ComputedColumnHandle column = (ComputedColumnHandle) obj;
						BindingExpressionProvider provider = new BindingExpressionProvider( column.getElementHandle( ) );
						provider.addFilter( new ComputedColumnExpressionFilter( bindingTable ) );
						expressionCellEditor.setExpressionProvider( provider );
					}
				}
			}
		} );
		initTableCellColor( );
		return parentComposite;
	}
	private boolean existDefaultColumn( )
	{
		for ( int i = 0; i < bindingTable.getTable( ).getItemCount( ); i++ )
		{
			TableItem item = bindingTable.getTable( ).getItem( i );
			if ( item.getText( 1 ).equals( DEFAULT_COLUMN_NAME ) )
				return true;
		}
		return false;
	}
	private void initTableCellColor( )
	{
		for ( int i = 0; i < bindingTable.getTable( ).getItemCount( ); i++ )
		{
			TableItem item = bindingTable.getTable( ).getItem( i );
			if ( item.getText( 1 ).equals( DEFAULT_COLUMN_NAME ) )
				item.setForeground( 1, Display.getDefault( )