- moved all database specific code to the module, cli is just a frontend

git-svn-id: file:///home/www/usr01/svn/gnuviechadmin/gnuviech.info/gnuviechadmin/trunk@219 a67ec6bc-e5d5-0310-a910-815c51eb3124

bin/createclient

@@ -20,8 +20,7 @@
 #
 # Version: $Id$
 
-import getopt, sys, sqlalchemy
+import getopt, sys
-
 from gnuviechadmin import client, exceptions
 
 def usage():
@@ -104,17 +103,10 @@ def main():
     if verbose:
         print "parsed client data is ", clientdata
     try:
-        myclient = client.Client(**clientdata)
+        myclient = client.create(**clientdata)
-    except exceptions.MissingFieldsError, mfe:
+    except exceptions.CreationFailedError, cfe:
-        print mfe
         usage()
-        sys.exit(2)
+        print cfe
-    try:
-        sess = sqlalchemy.create_session()
-        sess.save(myclient)
-        sess.flush()
-    except sqlalchemy.exceptions.SQLError, e:
-        print "saving client failed: ", e
         sys.exit(2)
     if verbose:
         print myclient

bin/listclients

@@ -18,15 +18,10 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 # USA.
 
-import sqlalchemy
+from gnuviechadmin import client
-
-from gnuviechadmin import client, exceptions
 
 def main():
-    session = sqlalchemy.create_session()
+    for row in client.fetchall():
-    query = session.query(client.Client)
-
-    for row in query.select():
         print row
 
 if __name__ == "__main__":

gnuviechadmin/client.py

@@ -20,7 +20,8 @@
 # Version: $Id$
 
 from sqlalchemy import *
-from gnuviechadmin import gva_cfg, exceptions
+from gnuviechadmin import gva_cfg
+from gnuviechadmin.exceptions import *
 
 meta = BoundMetaData(gva_cfg.GVA_DBE)
 client_table = Table('clients', meta,
@@ -62,29 +63,50 @@ class Client(object):
             if self.__getattribute__(key) is None:
                 missingfields.append(key)
         if missingfields:
-            raise exceptions.MissingFieldsError(missingfields)
+            raise MissingFieldsError(missingfields)
 
+    # def __repr__(self):
+    #          return """Client (Id %(clientid)d):
+    #  Name:    %(title)s %(firstname)s %(lastname)s
+    #  Address: %(address1)s
+    #           %(address2)s
+    #           %(zip)s %(city)s (%(country)s)
+    #  Phone:   %(phone)s
+    #  Mobile:  %(mobile)s
+    #  Fax:     %(fax)s
+    #  Email:   %(email)s""" % ({'clientid'  : self.clientid,
+    #                            'title'     : self.title,
+    #                            'firstname' : self.firstname,
+    #                            'lastname'  : self.lastname,
+    #                            'address1'  : self.address1,
+    #                            'address2'  : self.address2,
+    #                            'zip'       : self.zip,
+    #                            'city'      : self.city,
+    #                            'country'   : self.country,
+    #                            'phone'     : self.phone,
+    #                            'mobile'    : self.mobile,
+    #                            'fax'       : self.fax,
+    #                            'email'     : self.email})
     def __repr__(self):
-         return """Client (Id %(clientid)d):
+        return "%(clientid)d,%(firstname)s,%(lastname)s,%(email)s" % (
- Name:    %(title)s %(firstname)s %(lastname)s
+            {'clientid' : self.clientid, 'firstname' : self.firstname,
- Address: %(address1)s
+             'lastname' : self.lastname, 'email' : self.email})
-          %(address2)s
-          %(zip)s %(city)s (%(country)s)
- Phone:   %(phone)s
- Mobile:  %(mobile)s
- Fax:     %(fax)s
- Email:   %(email)s""" % ({'clientid'  : self.clientid,
-                           'title'     : self.title,
-                           'firstname' : self.firstname,
-                           'lastname'  : self.lastname,
-                           'address1'  : self.address1,
-                           'address2'  : self.address2,
-                           'zip'       : self.zip,
-                           'city'      : self.city,
-                           'country'   : self.country,
-                           'phone'     : self.phone,
-                           'mobile'    : self.mobile,
-                           'fax'       : self.fax,
-                           'email'     : self.email})
 
 clientmapper = mapper(Client, client_table)
+
+def create(**kwargs):
+    try:
+        myclient = Client(**kwargs)
+        sess = create_session()
+        sess.save(myclient)
+        sess.flush()
+    except MissingFieldsError, mfe:
+        raise CreationFailedError(Client.__name__, mfe)
+    except exceptions.SQLError, sqle:
+        raise CreationFailedError(Client.__name__, sqle)
+    return myclient
+
+def fetchall():
+    session = create_session()
+    query = session.query(Client)
+    return query.select()

gnuviechadmin/exceptions.py

@@ -28,3 +28,16 @@ class is missing."""
 
     def __str__(self):
         return "the fields %s are missing." % (repr(self.missing))
+
+class CreationFailedError(Exception):
+    """This exception should be raised if a business object could not
+be created."""
+    def __init__(self, classname, cause = None):
+        self.classname = classname
+        self.cause = cause
+
+    def __str__(self):
+        msg = "Creating an instance of class %s failed." % (self.classname)
+        if self.cause:
+            msg += " The reason is %s." % (str(self.cause))
+        return msg