예제 #1
0
    def resolve_row_references(self, current_dataset, row):
        """resolve this DataRow object's referenced values.
        """
        def resolved_rowlike(rowlike):
            key = rowlike.__name__
            if rowlike._dataset is type(current_dataset):
                return DeferredStoredObject(rowlike._dataset, key)
            loaded_ds = self.loaded[rowlike._dataset]
            return loaded_ds.meta._stored_objects.get_object(key)

        def resolve_stored_object(candidate):
            if is_rowlike(candidate):
                return resolved_rowlike(candidate)
            else:
                # then it is the stored object itself.  this would happen if
                # there is a reciprocal foreign key (i.e. organization has a
                # parent organization)
                return candidate

        for name in row.columns():
            val = getattr(row, name)
            if type(val) in (types.ListType, types.TupleType):
                # i.e. categories = [python, ruby]
                setattr(row, name, map(resolve_stored_object, val))
            elif is_rowlike(val):
                # i.e. category = python
                setattr(row, name, resolved_rowlike(val))
            elif isinstance(val, Ref.Value):
                # i.e. category_id = python.id.
                ref = val.ref
                # now the ref will return the attribute from a stored object
                # when __get__ is invoked
                ref.dataset_obj = self.loaded[ref.dataset_class]
예제 #2
0
파일: loadable.py 프로젝트: JamesX88/tes
 def resolve_row_references(self, current_dataset, row):        
     """resolve this DataRow object's referenced values.
     """
     def resolved_rowlike(rowlike):
         key = rowlike.__name__
         if rowlike._dataset is type(current_dataset):
             return DeferredStoredObject(rowlike._dataset, key)
         loaded_ds = self.loaded[rowlike._dataset]
         return loaded_ds.meta._stored_objects.get_object(key)
     def resolve_stored_object(candidate):            
         if is_rowlike(candidate):
             return resolved_rowlike(candidate)
         else:
             # then it is the stored object itself.  this would happen if 
             # there is a reciprocal foreign key (i.e. organization has a 
             # parent organization)
             return candidate
             
     for name in row.columns():
         val = getattr(row, name)
         if type(val) in (types.ListType, types.TupleType):
             # i.e. categories = [python, ruby]
             setattr(row, name, map(resolve_stored_object, val))
         elif is_rowlike(val):
             # i.e. category = python
             setattr(row, name, resolved_rowlike(val))
         elif isinstance(val, Ref.Value):
             # i.e. category_id = python.id.
             ref = val.ref
             # now the ref will return the attribute from a stored object 
             # when __get__ is invoked
             ref.dataset_obj = self.loaded[ref.dataset_class]
예제 #3
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 def resolve_stored_object(candidate):
     if is_rowlike(candidate):
         return resolved_rowlike(candidate)
     else:
         # then it is the stored object itself.  this would happen if
         # there is a reciprocal foreign key (i.e. organization has a
         # parent organization)
         return candidate
예제 #4
0
파일: loadable.py 프로젝트: JamesX88/tes
 def resolve_stored_object(candidate):            
     if is_rowlike(candidate):
         return resolved_rowlike(candidate)
     else:
         # then it is the stored object itself.  this would happen if 
         # there is a reciprocal foreign key (i.e. organization has a 
         # parent organization)
         return candidate
예제 #5
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def test_is_rowlike():
    class StubDataSet(DataSet):
        class some_row:
            pass
    class StubDataSetNewStyle(DataSet):
        class some_row(object):
            pass
    
    eq_(is_rowlike(StubDataSet.some_row), True)
    eq_(is_rowlike(StubDataSetNewStyle.some_row), True)
    eq_(is_rowlike(DataRow(StubDataSet)), True)
    
    class StubRow:
        pass
    class StubRowNewStyle(object):
        pass
    eq_(is_rowlike(StubRow), False)
    eq_(is_rowlike(StubRowNewStyle), False)
    
    eq_(is_rowlike(1), False)
    eq_(is_rowlike({}), False)
    eq_(is_rowlike([]), False)
예제 #6
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 def test_row_is_rowlike(self):
     assert is_rowlike(self.dataset_class.lolita), (
         "expected %s to be rowlike" % self.dataset_class.lolita)
예제 #7
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 def test_datarow_is_rowlike(self):
     class StubDataSet(DataSet):
         pass
     row = DataRow(StubDataSet)
     assert is_rowlike(row), "expected %s to be rowlike" % row