Bug 141959 Changing data set didn't clean old column bindings
Steps to reproduce: 1.Add two data sets, "ds1" and "ds2" 2.Add a table, binding with "ds1". All "ds1" column bindings generate automatically, that's good 3.Change "ds1" to None Expected result: All "ds1" column bindings should be cleaned Actual result: All "ds1" column bindings are still there. If changing to "ds2", "ds2" column bindings will be added after them.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
}
			}
		} );
		
		return parentComposite;
	}
	private boolean existHighLightColumn( )
	{
		if ( highLightName == null )
			return false;
		for ( int i = 0; i < bindingTable.getTable( ).getItemCount( ); i++ )
		{
			TableItem item = bindingTable.getTable( ).getItem( i );
			if ( item.getText( 1 ).equals( highLightName ) )
				return true;
		}
		return false;
	}
	private void setHihtLightColumn( )
	{
		if ( highLightName == null )
			return;
		for ( int i = 0; i < bindingTable.getTable( ).getItemCount( ); i++ )
		{
			TableItem item = bindingTable.getTable( ).getItem( i );
			if ( item.getText( 1 ).equals( highLightName ) )
			{
				item.setForeground( 1, Display.getDefault( )
						.getSystemColor( SWT.COLOR_BLUE ) );
				bindingTable.getTable( ).setSelection( i );