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Diffstat (limited to 'lib/sqlalchemy/sql/compiler.py')
| -rw-r--r-- | lib/sqlalchemy/sql/compiler.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py index eb339cf1d..d5b877a35 100644 --- a/lib/sqlalchemy/sql/compiler.py +++ b/lib/sqlalchemy/sql/compiler.py @@ -250,7 +250,26 @@ class SQLCompiler(engine.Compiled): # a map which tracks "truncated" names based on dialect.label_length # or dialect.max_identifier_length self.truncated_names = {} + + # other memoized things + self._memos ={} + def _get_bind_processors(self, dialect): + key = 'bind_processors', dialect.__class__, \ + dialect.server_version_info + + if key not in self._memos: + self._memos[key] = processors = dict( + (key, value) for key, value in + ( (self.bind_names[bindparam], + bindparam.bind_processor(dialect)) + for bindparam in self.bind_names ) + if value is not None + ) + return processors + else: + return self._memos[key] + def is_subquery(self): return len(self.stack) > 1 |