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django/django/db/models/sql/constants.py
Malcolm Tredinnick 9c52d56f6f Merged the queryset-refactor branch into trunk.
This is a big internal change, but mostly backwards compatible with existing
code. Also adds a couple of new features.

Fixed #245, #1050, #1656, #1801, #2076, #2091, #2150, #2253, #2306, #2400, #2430, #2482, #2496, #2676, #2737, #2874, #2902, #2939, #3037, #3141, #3288, #3440, #3592, #3739, #4088, #4260, #4289, #4306, #4358, #4464, #4510, #4858, #5012, #5020, #5261, #5295, #5321, #5324, #5325, #5555, #5707, #5796, #5817, #5987, #6018, #6074, #6088, #6154, #6177, #6180, #6203, #6658


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7477 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2008-04-27 02:50:16 +00:00

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Python

import re
# Valid query types (a dictionary is used for speedy lookups).
QUERY_TERMS = dict([(x, None) for x in (
'exact', 'iexact', 'contains', 'icontains', 'gt', 'gte', 'lt', 'lte', 'in',
'startswith', 'istartswith', 'endswith', 'iendswith', 'range', 'year',
'month', 'day', '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
# Separator used to split filter strings apart.
LOOKUP_SEP = '__'
# Constants to make looking up tuple values clearer.
# Join lists
TABLE_NAME = 0
RHS_ALIAS = 1
JOIN_TYPE = 2
LHS_ALIAS = 3
LHS_JOIN_COL = 4
RHS_JOIN_COL = 5
NULLABLE = 6
# How many results to expect from a cursor.execute call
MULTI = 'multi'
SINGLE = 'single'
ORDER_PATTERN = re.compile(r'\?|[-+]?\w+$')
ORDER_DIR = {
'ASC': ('ASC', 'DESC'),
'DESC': ('DESC', 'ASC')}