From ddfcdecb6626292e8479b01c8dcfe9590f7a3638 Mon Sep 17 00:00:00 2001
From: Jan Philipp Timme <jan.philipp@timme.it>
Date: Wed, 3 Sep 2014 15:24:48 +0200
Subject: [PATCH] [TASK] Begin importing the schema - this only works with a
 created type - looking for alternative ways.

---
 service/sqlitehelper.py | 58 ++++++++++++++++++++++++++++++++---------
 1 file changed, 45 insertions(+), 13 deletions(-)

diff --git a/service/sqlitehelper.py b/service/sqlitehelper.py
index 0c9b3e9..c59421e 100644
--- a/service/sqlitehelper.py
+++ b/service/sqlitehelper.py
@@ -7,19 +7,33 @@ def import_sqlite(project_id, sqlite_file):
     print "This is import_sqlite speaking!"
     print project_id
     print sqlite_file
-    print "Importing Data is still a TODO!"
+    print "Importing data..."
 
     from sqlalchemy import *
     from sqlalchemy.schema import CreateSchema
-
-    engine = create_engine('sqlite+pysqlite:///project_import_9.ctt4', echo=True)
-    meta = MetaData(bind=engine)
-    meta.reflect()
-    #meta.tables['Reference']
-    #meta.tables['ReferenceAuthor'].select().execute().fetchall()
+    from sqlalchemy.ext.automap import automap_base
+    from sqlalchemy.orm import Session
     
-    # Now we need to "convert" unsupported types :-/
-    for table in meta.sorted_tables:
+    # Initialize sqlite part
+    sqlite_engine = create_engine('sqlite+pysqlite:///project_import_9.ctt4', echo=True)
+    sqlite_session = Session(sqlite_engine)
+    sqlite_meta = MetaData(bind=sqlite_engine)
+    sqlite_meta.reflect()
+    
+    # Initialize postresql part
+    psql_engine = create_engine("postgresql://citavi_mapper:foobar2000@localhost:5432/citavi_mapper")
+    psql_session = Session(psql_engine)
+    psql_engine.execute(CreateSchema('alchemytest')) # TODO: Catch Exception/Warning/Whatever here
+    psql_meta = MetaData(bind=psql_engine, schema='alchemytest')
+    
+    """
+    # Reflect the origin - maybe psql_meta.reflect() is enough?
+    sqlite_autobase = automap_base()
+    sqlite_autobase.prepare(sqlite_engine, reflect=True)
+    """
+    
+    # Now that sh- super stuff is reflected and i can go on, using the Table instances.
+    for table in sqlite_meta.sorted_tables:
         table_name = str(table)
         columns = table.columns.items()
         for column_tuple in columns:
@@ -30,12 +44,30 @@ def import_sqlite(project_id, sqlite_file):
         print
     print
     
+    # Shove it up into postgresql's ... you know.
+    psql_meta.create_all(psql_engine)
+    
+    #sqlite_meta.reflect()
+    
+    #meta.tables['Reference']
+    #meta.tables['ReferenceAuthor'].select().execute().fetchall()
+    
+    # Now we need to "convert" unsupported types :-/
+    """
+    for table in meta.sorted_tables:
+        table_name = str(table)
+        columns = table.columns.items()
+        for column_tuple in columns:
+            column_name = column_tuple[0]
+            actual_sqlalchemy_column = column_tuple[1]
+            column_type = str(vars(actual_sqlalchemy_column)['type'])
+            print table_name + "." + column_name + ': ' + column_type
+        print
+    print
+    """
+    
     """ TODO: since DATETIME (sqlite3) does not map onto TIMESTAMP / DATE (postgresql), some mapping/migrating is required! """
     
-    # Shove it up into postgresql's ... you know it.
-    psql_engine = create_engine("postgresql://citavi_mapper:foobar2000@localhost:5432/citavi_mapper")
-    psql_engine.execute(CreateSchema('alchemytest'))
-    meta.create_all(psql_engine)
 
 
     pass
\ No newline at end of file