diff --git a/pylot/core/readdata/types.py b/pylot/core/readdata/types.py
index bef1ba45..619e4547 100644
--- a/pylot/core/readdata/types.py
+++ b/pylot/core/readdata/types.py
@@ -2,48 +2,49 @@
 #
 # Provide user the opportunity to read arbitrary organized database
 # types. This means e.g. seiscomp data structure (SDS) or event based
-# EGELADOS structure. 
+# EGELADOS structure.
 #
 
 import os
 
 
 class GenericDataBase(object):
-	'''
-	GenericDataBase type holds all information about the current data-
-	base working on.
-	'''
-	def __init__(self, stexp=None, **kwargs):
-		dbRegExp = {
-					
-		structExpression = os.path.split(stexp)
-		self.dataBaseDict = kwargs
-		
-				
-		
+    '''
+    GenericDataBase type holds all information about the current data-
+    base working on.
+    '''
+    def __init__(self, stexp=None, **kwargs):
+        dbRegExp = {}
+
+        structExpression = os.path.split(stexp)
+        self.dataBaseDict = kwargs
+
 
 class SeiscompDataStructure(GenericDataBase):
-	# Data type options
-	typeOptions = {'waveform':'D', #Waveform data
-				   'detect':'E', #Detection data
-				   'log':'L', #Log data
-				   'timing':'T', #Timing data
-				   'calib':'C', #Calibration data
-				   'resp':'R', #Response data
-				   'opaque':'O' #Opaque data
-				   }
-	# SDS fields' default values
-	# definitions from 
-	# http://www.seiscomp3.org/wiki/doc/applications/slarchive/SDS
-	sdsFields = {'SDSdir':['data','SDS'], #base directory list
-				 'YEAR':'1970', #4 digits
-				 'NET':'XX', #up to 8 characters
-				 'STA':'XXXX', #up to 8 characters
-				 'CHAN':'HHZ', #up to 8 characters
-				 'TYPE':typeOption['waveform'], #1 character
-				 'LOC':'', #up to 8 characters
-				 'DAY':'001' #3 digit day of year
-				 }
-	def __init__(self, **kwargs):
 
-		
+    def __init__(self, **kwargs):
+        # Data type options
+        self.__typeOptions = {'waveform': 'D',  # Waveform data
+                              'detect': 'E',  # Detection data
+                              'log': 'L',  # Log data
+                              'timing': 'T',  # Timing data
+                              'calib': 'C',  # Calibration data
+                              'resp': 'R',  # Response data
+                              'opaque': 'O'  # Opaque data
+                              }
+        # SDS fields' default values
+        # definitions from
+        # http://www.seiscomp3.org/wiki/doc/applications/slarchive/SDS
+        self.__sdsFields = {'SDSdir': ['data', 'SDS'],  # base directory list
+                            'YEAR': '1970',  # 4 digits
+                            'NET': 'XX',  # up to 8 characters
+                            'STA': 'XXXX',  # up to 8 characters
+                            'CHAN': 'HHZ',  # up to 8 characters
+                            'TYPE': self.getType('waveform'),  # 1 character
+                            'LOC': '',  # up to 8 characters
+                            'DAY': '001'  # 3 digit day of year
+                            }
+        pass
+
+    def getType(self, typeName=None):
+        pass