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
* 
	 * @param text
	 * @return
	 */
	private boolean isNumber( String text )
	{
		if ( UIHelper.isEmptyString( text ) )
		{
			return false;
		}
		return text.matches( "^[0-9]*[1-9][0-9]*$" ); 
	}
	private boolean existsField( FieldMetaData field )
	{
		if ( field == null )
			return false;
		for ( int i = 0; i < allAvailableFields.size( ); i++ )
		{
			if ( field.equals( allAvailableFields.get( i ) )
					|| field.getFullDisplayName( )
							.equals( allAvailableFields.get( i )
									.getFullDisplayName( ) ) )
			{
				return true;
			}
		}
		return false;
	}
	private boolean checkAllSelectedFields( )
	{