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Let's add my changes from "The Great WL Data Migration of 2012" #2

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merged 1 commit into from Jul 15, 2012
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Let's add my changes from "The Great WL Data Migration of 2012" #2

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9 changes: 5 additions & 4 deletions sqlalchemygrate/migrations.py
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Expand Up @@ -53,14 +53,15 @@ def table_migrate(e1, e2, table, table2=None, convert_fn=None, limit=100000):
if convert_fn: if convert_fn:
r = [] r = []
for row in data: for row in data:
converted = convert_fn(table, row) converted = convert_fn(row=row, old_table=table, new_table=table2)
if isinstance(converted, types.GeneratorType): if isinstance(converted, types.GeneratorType):
r += list(converted) r += list(converted)
else: elif converted is not None:
r.append(converted) r.append(converted)
data = r data = r


e2.execute(table2.insert(), data).close() if data:
e2.execute(table2.insert(), data).close()
log.debug("-> Inserted {0} rows into: {1}".format(len(data), table2.name)) log.debug("-> Inserted {0} rows into: {1}".format(len(data), table2.name))




Expand Down Expand Up @@ -150,7 +151,7 @@ def migrate(e1, e2, metadata, convert_map=None, populate_fn=None, only_tables=No


if callable(populate_fn): if callable(populate_fn):
log.info("Running populate function.") log.info("Running populate function.")
populate_fn(metadata_from=metadata_old, metadata_to=metadata) populate_fn(metadata_from=metadata_old, metadata_to=metadata_new)


for table in metadata_old.sorted_tables: for table in metadata_old.sorted_tables:
table_name = table.name table_name = table.name
Expand Down