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
for ( int i = 0; i < selectedFields.size( ); i++ )
		{
			if ( !existsField( selectedFields.get( i ) ) )
			{
				setMessage( Messages.getFormattedString( "MongoDBDataSetWizardPage.message.error.SelectedFieldNotFound", new Object[]{selectedFields.get( i ).getFullDisplayName( )} ), 
						ERROR );
				return false;
			}
		}
		return true;
	}
	private boolean checkCommandExpression( )
	{
		if ( opType.displayName( ).trim( ).length( ) > 0 )
		{
			if ( cmdExprValue == null || cmdExprValue.trim( ).length( ) == 0 )
			{
				setMessage( Messages.getString( "MongoDBDataSetWizardPage.message.error.MissingCommandExpression" ), 
						ERROR );
				return false;
			}
		}
		return true;
	}
	private void handleCommandOperationSelection( )
	{
		cmdExprBtn.setEnabled( opType.displayName( ).trim( ).length( ) > 0 );
		boolean collectionAreaEnabled = opType == null
				|| !CommandOperationType.RUN_DB_COMMAND.name( )
						.equals( opType.name( ) );