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@ -120,16 +120,22 @@ class Lookup(RegisterLookupMixin):
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class BuiltinLookup(Lookup):
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def as_sql(self, qn, connection):
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lhs_sql, params = self.process_lhs(qn, connection)
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def process_lhs(self, qn, connection, lhs=None):
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lhs_sql, params = super(BuiltinLookup, self).process_lhs(
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qn, connection, lhs)
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field_internal_type = self.lhs.output_type.get_internal_type()
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db_type = self.lhs.output_type.db_type(connection=connection)
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lhs_sql = connection.ops.field_cast_sql(db_type, field_internal_type) % lhs_sql
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lhs_sql = connection.ops.field_cast_sql(
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db_type, field_internal_type) % lhs_sql
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lhs_sql = connection.ops.lookup_cast(self.lookup_name) % lhs_sql
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return lhs_sql, params
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def as_sql(self, qn, connection):
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lhs_sql, params = self.process_lhs(qn, connection)
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rhs_sql, rhs_params = self.process_rhs(qn, connection)
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params.extend(rhs_params)
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operator_plus_rhs = self.get_rhs_op(connection, rhs_sql)
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return '%s %s' % (lhs_sql, operator_plus_rhs), params
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rhs_sql = self.get_rhs_op(connection, rhs_sql)
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return '%s %s' % (lhs_sql, rhs_sql), params
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def get_rhs_op(self, connection, rhs):
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return connection.operators[self.lookup_name] % rhs
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@ -276,8 +282,8 @@ default_lookups['range'] = Range
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class DateLookup(BuiltinLookup):
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def process_lhs(self, qn, connection):
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lhs, params = super(DateLookup, self).process_lhs(qn, connection)
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def process_lhs(self, qn, connection, lhs=None):
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lhs, params = super(DateLookup, self).process_lhs(qn, connection, lhs)
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tzname = timezone.get_current_timezone_name() if settings.USE_TZ else None
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sql, tz_params = connection.ops.datetime_extract_sql(self.extract_type, lhs, tzname)
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return connection.ops.lookup_cast(self.lookup_name) % sql, tz_params
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@ -341,9 +347,18 @@ default_lookups['search'] = Search
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class Regex(BuiltinLookup):
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lookup_name = 'regex'
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def as_sql(self, qn, connection):
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if self.lookup_name in connection.operators:
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return super(Regex, self).as_sql(qn, connection)
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else:
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lhs, lhs_params = self.process_lhs(qn, connection)
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rhs, rhs_params = self.process_rhs(qn, connection)
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sql_template = connection.ops.regex_lookup(self.lookup_name)
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return sql_template % (lhs, rhs), lhs_params + rhs_params
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default_lookups['regex'] = Regex
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class IRegex(BuiltinLookup):
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class IRegex(Regex):
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lookup_name = 'iregex'
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default_lookups['iregex'] = IRegex
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