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
layout.marginLeft = 5;
		layout.marginTop = 5;
		layout.horizontalSpacing = 15;
		bottomArea.setLayout( layout );
		bottomArea.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		queryExprBtn = new Button( bottomArea, SWT.PUSH );
		queryExprBtn.setText( Messages.getString( "MongoDBDataSetWizardPage.Button.QueryExpression" ) ); 
		queryExprBtn.addSelectionListener( new SelectionListener( ) {
			public void widgetSelected( SelectionEvent e )
			{
				MDBQueryExpressionBuilder queryExprDialog = new MDBQueryExpressionBuilder( Display.getDefault( )
						.getActiveShell( ) );
				queryExprDialog.setExpressionText( queryExpr );
				if ( queryExprDialog.open( ) == Window.OK )
				{
					String oldQueryExpr = queryExpr;
					queryExpr = queryExprDialog.getExprText( );
					if ( queryExpr != null && !queryExpr.equals( oldQueryExpr ) )
					{
						modelChanged = true;
						queryProps.setFindQueryExpr( queryExpr );
						validateData( );
					}
				}
			}
			public void widgetDefaultSelected( SelectionEvent e )
			{
			}
		} );
		sortExprBtn = new Button( bottomArea, SWT.PUSH );