Source Code for Module Ganga.GPIDev.Lib.Dataset.Dataset'

 1  from Ganga.GPIDev.Base import GangaObject 
 2  from Ganga.GPIDev.Schema import * 
 3   
 4  # Dataset class represents the empty dataset and is a base class for specific, non-empty datasets. 
 5  # 
 6  # Derived dataset classes may be freely defined and may be either specific to applications or more generic. 
 7  # The schema and internal interface is a convention between the dataset provider and the application provider. 
 8  # 
 9  # Applications are encouraged to test and handle empty datasets with the isEmpty() method. 
10   
11 -class Dataset(GangaObject): 
12      _schema = Schema(Version(1,0), {}) 
13      _category = 'datasets' 
14      _name = "EmptyDataset" 
15   
16 -    def __init__(self): 
17          super(Dataset, self).__init__() 
18   
19      # Return true if the dataset is an instance of the default base class. 
20      # You may override it in your dataset definition but it is not mandatory. 
21 -    def isEmpty(self): 
22          return self._name == Dataset._name 
23       
24  # 
25  # 
26  # 
27  # $Log: not supported by cvs2svn $ 
28  # Revision 1.2  2005/08/10 14:35:57  andrew 
29  # Bugfix, wrong object used in return statement 
30  # 
31  # 
32  # 
33