def configure(self, config):
iuserextensions = PluginImplementations(IUserExtension)
iuserextensions = iuserextensions.extensions()
cols = []
these_configured_cols = set()
for ext in iuserextensions:
ext_class = ext.__class__
new_cols = ext.get_table_columns()
if new_cols is None or len(new_cols) < 1:
continue
for nc in new_cols:
assert isinstance(nc, Column)
col_name = nc.name
col_type = nc.type
col_c_type = col_type.__class__ if col_type else None
these_configured_cols.add((ext_class, col_name, col_c_type))
if nc.primary_key:
raise RuntimeError(
"Column {} cannot be a primary key.".format(col_name))
if nc.system:
raise RuntimeError(
"Column {} cannot be a system col.".format(col_name))
cols.append(nc)
if self.configured_cols and \
len(these_configured_cols.difference(self.configured_cols)) == 0:
# we've configured already, and cols are still the same.
return
self.configured_cols = these_configured_cols
try:
self.table = create_or_extend_table(*cols)
except Exception, e:
log.error(str(e))
raise e
def __new__(cls, *args, **kwargs):
iuserext_ext = PluginImplementations(IUserExt)
iuserext_ext = iuserext_ext.extensions()
if iuserext_ext and iuserext_ext[0].__class__ != cls:
msg = ('The "UserExt" plugin must be the first IUserExt '
'plugin loaded. Change the order it is loaded in '
'"ckan.plugins" in your CKAN .ini file and try again.')
raise RuntimeError(msg)
return super(cls, cls).__new__(cls, *args, **kwargs)