def adapt_schema(db, target_schema):
""" Returns a database using the specified 'target_schema', and
that maps the content of 'db', thanks to one or more
L{Adapter}s. If no suitable adapter can be found, will raise an
AdaptError()"""
# for the moment, we only resolve direct hits. More clever
# resolutions will hopefully be implemented.
if db.schema.id == target_schema:
return db
# search for target_schema in the adapters for the current schema:
adapters = Registry.get(db.schema.id, 'adapters')
for adapter in adapters:
if adapter.target == target_schema:
return adapter()(db)
raise AdaptError(_("no adaptor for converting a %s into a %s") % (
db.schema.id, target_schema))
def testAdapters(self):
c = Registry.get("with-adapter", "adapters")
self.failUnlessEqual(len(c), 1)
c = c[0]
self.failUnlessEqual(c.target, "another/format")
def testCategories(self):
c = Registry.get("with-path", "importers")
assert len(c) == 2
