Fix fk reflection issue #70

[graingert]

Fix parsing of FK relationships with schemas, eg of the form ... REFERENCES schema.table (col)

[graingert]

@berdario does this only apply with tables not on the public schema?

[berdario]

Yeah, it was again on a different schema than public

[graingert]

@berdario this looks like it fixes your issue!

[berdario]

Awesome! I'll try it right away

[graingert]

@berdario OK, try this out by installing with
pip install https://github.com/sqlalchemy-redshift/sqlalchemy-redshift/archive/fix-fk-reflection-issue.tar.gz
then if it works I'll merge it in and release it on PyPI

[berdario]

Thanks

The error is report in #70 disappeared, but there's still another regression compared to 0.1.2

this is the traceback:

File "/home/dario/Projects/l2/Hydra/database/hydra_database/__init__.py", line 81, in cached_metadatas
  redshiftmeta.reflect(only=tablenames, schema=schema)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 3647, in reflect
  Table(name, self, **reflect_opts)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 416, in __new__
  metadata._remove_table(name, schema)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 60, in __exit__
  compat.reraise(exc_type, exc_value, exc_tb)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 411, in __new__
  table._init(name, metadata, *args, **kw)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 484, in _init
  self._autoload(metadata, autoload_with, include_columns)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 496, in _autoload
  self, include_columns, exclude_columns
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1477, in run_callable
  return callable_(self, *args, **kwargs)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 364, in reflecttable
  return insp.reflecttable(table, include_columns, exclude_columns)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/reflection.py", line 578, in reflecttable
  exclude_columns, reflection_options)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/reflection.py", line 687, in _reflect_fk
  **reflection_options
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 416, in __new__
  metadata._remove_table(name, schema)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/util/langhelpers.py", line 60, in __exit__
  compat.reraise(exc_type, exc_value, exc_tb)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 411, in __new__
  table._init(name, metadata, *args, **kw)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 484, in _init
  self._autoload(metadata, autoload_with, include_columns)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/sql/schema.py", line 496, in _autoload
  self, include_columns, exclude_columns
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1477, in run_callable
  return callable_(self, *args, **kwargs)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 364, in reflecttable
  return insp.reflecttable(table, include_columns, exclude_columns)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/reflection.py", line 547, in reflecttable
  table_name, schema, **table.dialect_kwargs)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/reflection.py", line 312, in get_table_options
  info_cache=self.info_cache, **kw)
File "<string>", line 2, in get_table_options
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy/engine/reflection.py", line 54, in cache
  ret = fn(self, con, *args, **kw)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy_redshift/dialect.py", line 493, in get_table_options
  schema, **kw)
File "/home/dario/.local/share/virtualenvs/hydra_worker/local/lib/python2.7/site-packages/sqlalchemy_redshift/dialect.py", line 576, in _get_redshift_relation
  raise sa.exc.NoSuchTableError(key)
sqlalchemy.exc.NoSuchTableError: ref."domain"

I'll try to create a small test case now