Made csvimport somewhat tolerant of load errors.

[zzz-pokedex.git] / pokedex / __init__.py

diff --git a/pokedex/__init__.py b/pokedex/__init__.py
index 138c58b..38c0487 100644 (file)
--- a/pokedex/__init__.py
+++ b/pokedex/__init__.py
@@ -1,6 +1,8 @@
 # encoding: utf8
 import sys
 
+import sqlalchemy.types
+
 from .db import connect, metadata
 
 def main():
@@ -27,6 +29,12 @@ def csvimport(engine_uri, dir='.'):
 
     metadata.create_all()
 
+    # Oh, mysql-chan.
+    # TODO try to insert data in preorder so we don't need this hack and won't
+    #      break similarly on other engines
+    if 'mysql' in engine_uri:
+        session.execute('SET FOREIGN_KEY_CHECKS = 0')
+
     # This is a secret attribute on a secret singleton of a secret class that
     # appears to hopefully contain all registered classes as keys.
     # There is no other way to accomplish this, as far as I can tell.
@@ -34,21 +42,49 @@ def csvimport(engine_uri, dir='.'):
     for table in sorted(instrumentation_registry.manager_finders.keys(),
                         key=lambda self: self.__table__.name):
         table_name = table.__table__.name
-        print table_name
+        # Print the table name but leave the cursor in a fixed column
+        print table_name + '...', ' ' * (40 - len(table_name)),
+
+        try:
+            csvfile = open("%s/%s.csv" % (dir, table_name), 'rb')
+        except IOError:
+            # File doesn't exist; don't load anything!
+            print 'no data!'
+            continue
 
-        reader = csv.reader(open("%s/%s.csv" % (dir, table_name), 'rb'), lineterminator='\n')
-        columns = [unicode(column) for column in reader.next()]
+        reader = csv.reader(csvfile, lineterminator='\n')
+        column_names = [unicode(column) for column in reader.next()]
 
         for csvs in reader:
             row = table()
 
-            for column, value in zip(columns, csvs):
-                value = value.decode('utf-8')
-                setattr(row, column, value)
+            for column_name, value in zip(column_names, csvs):
+                column = table.__table__.c[column_name]
+                if column.nullable and value == '':
+                    # Empty string in a nullable column really means NULL
+                    value = None
+                elif isinstance(column.type, sqlalchemy.types.Boolean):
+                    # Boolean values are stored as string values 0/1, but both
+                    # of those evaluate as true; SQLA wants True/False
+                    if value == '0':
+                        value = False
+                    else:
+                        value = True
+                else:
+                    # Otherwise, unflatten from bytes
+                    value = value.decode('utf-8')
+
+                setattr(row, column_name, value)
 
             session.add(row)
 
         session.commit()
+        print 'loaded'
+
+    # Shouldn't matter since this is usually the end of the program and thus
+    # the connection too, but let's change this back just in case
+    if 'mysql' in engine_uri:
+        session.execute('SET FOREIGN_KEY_CHECKS = 1')
 
 
 def csvexport(engine_uri, dir='.'):