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Changed __year lookup to use a BETWEEN SQL statement instead of comparing the result of EXTRACT(year). This should be more efficient.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@4505 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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@ -164,7 +164,7 @@ class Field(object):
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def get_db_prep_lookup(self, lookup_type, value):
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"Returns field's value prepared for database lookup."
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if lookup_type in ('exact', 'gt', 'gte', 'lt', 'lte', 'year', 'month', 'day', 'search'):
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if lookup_type in ('exact', 'gt', 'gte', 'lt', 'lte', 'month', 'day', 'search'):
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return [value]
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elif lookup_type in ('range', 'in'):
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return value
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@ -178,7 +178,13 @@ class Field(object):
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return ["%%%s" % prep_for_like_query(value)]
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elif lookup_type == 'isnull':
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return []
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raise TypeError, "Field has invalid lookup: %s" % lookup_type
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elif lookup_type == 'year':
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try:
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value = int(value)
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except ValueError:
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raise ValueError("The __year lookup type requires an integer argument")
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return ['%s-01-01 00:00:00' % value, '%s-12-31 23:59:59.999999' % value]
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raise TypeError("Field has invalid lookup: %s" % lookup_type)
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def has_default(self):
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"Returns a boolean of whether this field has a default value."
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@ -198,17 +198,17 @@ class QuerySet(object):
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counter = self._clone()
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counter._order_by = ()
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counter._select_related = False
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offset = counter._offset
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limit = counter._limit
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counter._offset = None
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counter._limit = None
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try:
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select, sql, params = counter._get_sql_clause()
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except EmptyResultSet:
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return 0
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cursor = connection.cursor()
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if self._distinct:
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id_col = "%s.%s" % (backend.quote_name(self.model._meta.db_table),
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@ -553,7 +553,7 @@ class ValuesQuerySet(QuerySet):
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else: # Default to all fields.
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columns = [f.column for f in self.model._meta.fields]
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field_names = [f.attname for f in self.model._meta.fields]
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select = ['%s.%s' % (backend.quote_name(self.model._meta.db_table), backend.quote_name(c)) for c in columns]
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cursor = connection.cursor()
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cursor.execute("SELECT " + (self._distinct and "DISTINCT " or "") + ",".join(select) + sql, params)
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@ -576,12 +576,12 @@ class DateQuerySet(QuerySet):
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if self._field.null:
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self._where.append('%s.%s IS NOT NULL' % \
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(backend.quote_name(self.model._meta.db_table), backend.quote_name(self._field.column)))
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try:
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select, sql, params = self._get_sql_clause()
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except EmptyResultSet:
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raise StopIteration
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sql = 'SELECT %s %s GROUP BY 1 ORDER BY 1 %s' % \
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(backend.get_date_trunc_sql(self._kind, '%s.%s' % (backend.quote_name(self.model._meta.db_table),
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backend.quote_name(self._field.column))), sql, self._order)
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@ -598,15 +598,15 @@ class DateQuerySet(QuerySet):
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c._kind = self._kind
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c._order = self._order
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return c
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class EmptyQuerySet(QuerySet):
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def __init__(self, model=None):
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super(EmptyQuerySet, self).__init__(model)
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self._result_cache = []
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def count(self):
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return 0
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def delete(self):
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pass
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@ -708,9 +708,9 @@ def get_where_clause(lookup_type, table_prefix, field_name, value):
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return '%s%s IN (%s)' % (table_prefix, field_name, in_string)
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else:
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raise EmptyResultSet
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elif lookup_type == 'range':
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elif lookup_type in ('range', 'year'):
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return '%s%s BETWEEN %%s AND %%s' % (table_prefix, field_name)
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elif lookup_type in ('year', 'month', 'day'):
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elif lookup_type in ('month', 'day'):
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return "%s = %%s" % backend.get_date_extract_sql(lookup_type, table_prefix + field_name)
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elif lookup_type == 'isnull':
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return "%s%s IS %sNULL" % (table_prefix, field_name, (not value and 'NOT ' or ''))
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@ -791,7 +791,7 @@ def parse_lookup(kwarg_items, opts):
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if len(path) < 1:
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raise TypeError, "Cannot parse keyword query %r" % kwarg
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if value is None:
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# Interpret '__exact=None' as the sql '= NULL'; otherwise, reject
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# all uses of None as a query value.
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@ -1007,7 +1007,7 @@ def delete_objects(seen_objs):
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pk_list[offset:offset+GET_ITERATOR_CHUNK_SIZE])
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for f in cls._meta.many_to_many:
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if isinstance(f, GenericRelation):
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from django.contrib.contenttypes.models import ContentType
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from django.contrib.contenttypes.models import ContentType
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query_extra = 'AND %s=%%s' % f.rel.to._meta.get_field(f.content_type_field_name).column
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args_extra = [ContentType.objects.get_for_model(cls).id]
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else:
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@ -12,7 +12,7 @@ class Article(models.Model):
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class Meta:
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ordering = ('pub_date','headline')
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def __str__(self):
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return self.headline
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@ -319,7 +319,6 @@ AttributeError: Manager isn't accessible via Article instances
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>>> Article.objects.filter(id__lte=4).delete()
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>>> Article.objects.all()
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[<Article: Article 6>, <Article: Default headline>, <Article: Article 7>, <Article: Updated article 8>]
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"""}
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from django.conf import settings
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@ -358,4 +357,11 @@ __test__['API_TESTS'] += """
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>>> a10 = Article.objects.create(headline="Article 10", pub_date=datetime(2005, 7, 31, 12, 30, 45))
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>>> Article.objects.get(headline="Article 10")
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<Article: Article 10>
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# Edge-case test: A year lookup should retrieve all objects in the given
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year, including Jan. 1 and Dec. 31.
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>>> a11 = Article.objects.create(headline='Article 11', pub_date=datetime(2008, 1, 1))
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>>> a12 = Article.objects.create(headline='Article 12', pub_date=datetime(2008, 12, 31, 23, 59, 59, 999999))
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>>> Article.objects.filter(pub_date__year=2008)
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[<Article: Article 11>, <Article: Article 12>]
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"""
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