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
opTypeCombo.addSelectionListener( opTypeSelectionListener );
		cmdExprBtn = new Button( commandOpArea, SWT.PUSH );
		cmdExprBtn.setText( Messages.getString( "MongoDBDataSetWizardPage.Button.text.CommandExpression" ) ); 
		cmdExprBtn.setToolTipText( Messages.getString( "MongoDBDataSetWizardPage.Button.tooltip.CommandExpression" ) ); 
		cmdExprBtn.addSelectionListener( new SelectionListener( ) {
			public void widgetSelected( SelectionEvent e )
			{
				MDBCommandExpressionBuilder cmdExprDialog = new MDBCommandExpressionBuilder( Display.getDefault( )
						.getActiveShell( ),
						opType );
				cmdExprDialog.setExpressionText( cmdExprValue );
				if ( cmdExprDialog.open( ) == Window.OK )
				{
					String oldCmdExpr = cmdExprValue;
					cmdExprValue = cmdExprDialog.getExprText( );
					if ( cmdExprValue != null
							&& !cmdExprValue.equals( oldCmdExpr ) )
					{
						modelChanged = true;
						queryProps.setOperationExpression( cmdExprValue );
						if ( UIHelper.isEmptyString( collectionName )
								&& allAvailableFields.size( ) == 0 )
						{
							doUpdateAvailableFieldsArea( );
						}
						else if ( MessageDialog.open( MessageDialog.QUESTION,
								getShell( ),
								Messages.getString( "MongoDBDataSetWizardPage.MessageBox.title.PromptToRefreshAvailableFields" ), Messages.getString( "MongoDBDataSetWizardPage.MessageBox.message.PromptToRefreshAvailableFields" ), SWT.NONE ) ) 
						{
							doUpdateAvailableFieldsArea( );