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- """
- Constants specific to the SQL storage portion of the ORM.
- """
-
- import re
-
- # Valid query types (a set is used for speedy lookups). These are (currently)
- # considered SQL-specific; other storage systems may choose to use different
- # lookup types.
- QUERY_TERMS = {
- 'exact', 'iexact', 'contains', 'icontains', 'gt', 'gte', 'lt', 'lte', 'in',
- 'startswith', 'istartswith', 'endswith', 'iendswith', 'range', 'year',
- 'month', 'day', 'week_day', 'hour', 'minute', 'second', 'isnull', 'search',
- 'regex', 'iregex',
- }
-
- # Size of each "chunk" for get_iterator calls.
- # Larger values are slightly faster at the expense of more storage space.
- GET_ITERATOR_CHUNK_SIZE = 100
-
- # Namedtuples for sql.* internal use.
-
- # How many results to expect from a cursor.execute call
- MULTI = 'multi'
- SINGLE = 'single'
- CURSOR = 'cursor'
- NO_RESULTS = 'no results'
-
- ORDER_PATTERN = re.compile(r'\?|[-+]?[.\w]+$')
- ORDER_DIR = {
- 'ASC': ('ASC', 'DESC'),
- 'DESC': ('DESC', 'ASC'),
- }
-
- # SQL join types.
- INNER = 'INNER JOIN'
- LOUTER = 'LEFT OUTER JOIN'
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