Bug 422205 Missing help content reference in MongoDB ODA Data Set UI page
The help context ID is not referenced by the MongoDB DOA data set query page.
data/org.eclipse.birt.data.oda.mongodb.ui/src/org/eclipse/birt/data/oda/mongodb/ui/impl/MongoDBDataSetWizardPage.java
boolean flag = false;
	private SelectionListener collectionSelectionListener;
	private ModifyListener collectionModifyListener;
	private SelectionListener opTypeSelectionListener;
	private void handleNoFieldsException( final Exception e )
	{
		if ( !flag )
		{
			flag = true;
			Display.getDefault( ).asyncExec( new Runnable( ) {
				public void run( )
				{
					String errorMsg = UIHelper.getUserErrorMessage( "MongoDBDataSetWizardPage.ExceptionDialog.message.FindFields", e ); 
					ExceptionHandler.showException( Display.getDefault( )
							.getActiveShell( ),
							Messages.getString( "MongoDBDataSetWizardPage.ExceptionDialog.title" ), errorMsg, e ); 
					flag = false;
				}
			} );
		}
	}
	private void doOpTypeChanged( )
	{
		opType = CommandOperationType.getType( opTypeCombo.getText( ).trim( ) );
		queryProps.setOperationType( opType );
	}
	private void doRemoveSelectedFields( )
	{
		int[] indices = selectedFieldsTable.getTable( ).getSelectionIndices( );
		if ( indices.length == 0 )