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 10:50:16 +08:00
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"""
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Useful auxilliary data structures for query construction. Not useful outside
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the SQL domain.
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"""
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class EmptyResultSet(Exception):
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pass
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class MultiJoin(Exception):
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"""
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Used by join construction code to indicate the point at which a
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multi-valued join was attempted (if the caller wants to treat that
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exceptionally).
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"""
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2013-02-18 07:56:24 +08:00
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def __init__(self, names_pos, path_with_names):
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self.level = names_pos
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# The path travelled, this includes the path to the multijoin.
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self.names_with_path = path_with_names
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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 10:50:16 +08:00
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class Empty(object):
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pass
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class RawValue(object):
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def __init__(self, value):
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self.value = value
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class Date(object):
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"""
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Add a date selection column.
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"""
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2009-12-22 23:18:51 +08:00
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def __init__(self, col, lookup_type):
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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 10:50:16 +08:00
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self.col = col
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self.lookup_type = lookup_type
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def relabel_aliases(self, change_map):
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c = self.col
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if isinstance(c, (list, tuple)):
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self.col = (change_map.get(c[0], c[0]), c[1])
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2009-12-22 23:18:51 +08:00
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def as_sql(self, qn, connection):
|
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 10:50:16 +08:00
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if isinstance(self.col, (list, tuple)):
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2009-12-22 23:18:51 +08:00
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col = '%s.%s' % tuple([qn(c) for c in self.col])
|
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 10:50:16 +08:00
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else:
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col = self.col
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2013-02-10 23:15:49 +08:00
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return connection.ops.date_trunc_sql(self.lookup_type, col), []
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class DateTime(object):
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"""
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Add a datetime selection column.
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"""
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def __init__(self, col, lookup_type, tzname):
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self.col = col
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self.lookup_type = lookup_type
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self.tzname = tzname
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def relabel_aliases(self, change_map):
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c = self.col
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if isinstance(c, (list, tuple)):
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self.col = (change_map.get(c[0], c[0]), c[1])
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def as_sql(self, qn, connection):
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if isinstance(self.col, (list, tuple)):
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col = '%s.%s' % tuple([qn(c) for c in self.col])
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else:
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col = self.col
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return connection.ops.datetime_trunc_sql(self.lookup_type, col, self.tzname)
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