/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/table.py
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revision 1662 by bh, Wed Aug 27 13:51:01 2003 UTC revision 1961 by bh, Wed Nov 19 15:46:03 2003 UTC
# Line 33  dbflib_fieldtypes = {dbflib.FTString: FI Line 33  dbflib_fieldtypes = {dbflib.FTString: FI
33                       dbflib.FTDouble: FIELDTYPE_DOUBLE}                       dbflib.FTDouble: FIELDTYPE_DOUBLE}
34    
35    
 class OldTableInterfaceMixin:  
   
     """Mixin to implement the old table interface using the new one"""  
   
     def __deprecation_warning(self):  
         """Issue a DeprecationWarning for code hat uses the old interface"""  
         callername = inspect.currentframe().f_back.f_code.co_name  
         warnings.warn("The %s method of the old table interface"  
                       " is deprecated" % callername,  
                       DeprecationWarning, stacklevel = 3)  
   
     def record_count(self):  
         self.__deprecation_warning()  
         return self.NumRows()  
   
     def field_count(self):  
         self.__deprecation_warning()  
         return self.NumColumns()  
   
     def field_info(self, field):  
         """Return a tuple (type, name, width, prec) for the field no. field  
   
         type is the data type of the field, name the name, width the  
         field width in characters and prec the decimal precision. width  
         and prec will be zero if the information returned by the Column  
         method doesn't provide values for them.  
         """  
         self.__deprecation_warning()  
         col = self.Column(field)  
         return (col.type, col.name,  
                getattr(col, "width", 0), getattr(col, "prec", 0))  
   
     def field_info_by_name(self, col):  
         self.__deprecation_warning()  
         try:  
             return self.field_info(col)  
         except KeyError:  
             # FIXME: It may be that field_info raises other exceptions  
             # when the name is not a valid column name.  
             return None  
   
     def field_range(self, fieldName):  
         self.__deprecation_warning()  
         min, max = self.ValueRange(fieldName)  
         return ((min, None), (max, None))  
   
     def GetUniqueValues(self, field):  
         self.__deprecation_warning()  
         return self.UniqueValues(field)  
   
     def read_record(self, r):  
         self.__deprecation_warning()  
         return self.ReadRowAsDict(r)  
   
   
   
36  class DBFColumn:  class DBFColumn:
37    
38      """Description of a column in a DBFTable      """Description of a column in a DBFTable
# Line 111  class DBFColumn: Line 55  class DBFColumn:
55          self.index = index          self.index = index
56    
57    
58  class DBFTable(TitledObject, OldTableInterfaceMixin):  class DBFTable(TitledObject):
59    
60      """      """
61      Table interface for the data in a DBF file      Table interface for the data in a DBF file
# Line 219  class DBFTable(TitledObject, OldTableInt Line 163  class DBFTable(TitledObject, OldTableInt
163          The row_is_ordinal is ignored for DBF tables because the row id          The row_is_ordinal is ignored for DBF tables because the row id
164          is always the row number.          is always the row number.
165          """          """
166          return self.dbf.read_record(row)[self.column_map[col].name]          return self.dbf.read_attribute(row, self.column_map[col].index)
167    
168      def ValueRange(self, col):      def ValueRange(self, col):
169          """Return the minimum and maximum values of the values in the column          """Return the minimum and maximum values of the values in the column
# Line 301  class MemoryColumn: Line 245  class MemoryColumn:
245          self.type = type          self.type = type
246          self.index = index          self.index = index
247    
248  class MemoryTable(TitledObject, OldTableInterfaceMixin):  class MemoryTable(TitledObject):
249    
250      """Very simple table implementation that operates on a list of tuples"""      """Very simple table implementation that operates on a list of tuples"""
251    
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  Added in v.1961
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