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Merge remote branch 'hmarr/v0.4'

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Conflicts:
	mongoengine/fields.py
	tests/fields.py
This commit is contained in:
Florian Schlachter
2010-07-19 01:11:28 +02:00
parent 9596a25bb9 c2163ecee5
commit 323c86308a
6 changed files with 153 additions and 33 deletions
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1
mongoengine/base.py
View File

@@ -22,6 +22,7 @@ class BaseField(object):
# Fields may have _types inserted into indexes by default
_index_with_types = True
_geo_index = False
def __init__(self, db_field=None, name=None, required=False, default=None,
unique=False, unique_with=None, primary_key=False,

41
mongoengine/fields.py
View File

@@ -16,11 +16,10 @@ __all__ = ['StringField', 'IntField', 'FloatField', 'BooleanField',
'DateTimeField', 'EmbeddedDocumentField', 'ListField', 'DictField',
'ObjectIdField', 'ReferenceField', 'ValidationError',
'DecimalField', 'URLField', 'GenericReferenceField', 'FileField',
'BinaryField', 'SortedListField', 'EmailField', 'GeoLocationField']
'BinaryField', 'SortedListField', 'EmailField', 'GeoPointField']
RECURSIVE_REFERENCE_CONSTANT = 'self'
class StringField(BaseField):
"""A unicode string field.
"""
@@ -372,24 +371,6 @@ class DictField(BaseField):
def lookup_member(self, member_name):
return self.basecls(db_field=member_name)
class GeoLocationField(DictField):
"""Supports geobased fields"""
def validate(self, value):
"""Make sure that a geo-value is of type (x, y)
"""
if not isinstance(value, tuple) and not isinstance(value, list):
raise ValidationError('GeoLocationField can only hold tuples or lists of (x, y)')
if len(value) <> 2:
raise ValidationError('GeoLocationField must have exactly two elements (x, y)')
def to_mongo(self, value):
return {'x': value[0], 'y': value[1]}
def to_python(self, value):
return (value['x'], value['y'])
class ReferenceField(BaseField):
"""A reference to a document that will be automatically dereferenced on
access (lazily).
@@ -456,7 +437,6 @@ class ReferenceField(BaseField):
def lookup_member(self, member_name):
return self.document_type._fields.get(member_name)
class GenericReferenceField(BaseField):
"""A reference to *any* :class:`~mongoengine.document.Document` subclass
that will be automatically dereferenced on access (lazily).
@@ -503,6 +483,7 @@ class GenericReferenceField(BaseField):
def prepare_query_value(self, op, value):
return self.to_mongo(value)['_ref']
class BinaryField(BaseField):
"""A binary data field.
"""
@@ -617,3 +598,21 @@ class FileField(BaseField):
assert isinstance(value, GridFSProxy)
assert isinstance(value.grid_id, pymongo.objectid.ObjectId)
class GeoPointField(BaseField):
"""A list storing a latitude and longitude.
"""
_geo_index = True
def validate(self, value):
"""Make sure that a geo-value is of type (x, y)
"""
if not isinstance(value, (list, tuple)):
raise ValidationError('GeoPointField can only accept tuples or '
'lists of (x, y)')
if not len(value) == 2:
raise ValidationError('Value must be a two-dimensional point.')
if (not isinstance(value[0], (float, int)) and
not isinstance(value[1], (float, int))):
raise ValidationError('Both values in point must be float or int.')

38
mongoengine/queryset.py
View File

@@ -241,21 +241,22 @@ class QuerySet(object):
# Ensure document-defined indexes are created
if self._document._meta['indexes']:
for key_or_list in self._document._meta['indexes']:
#self.ensure_index(key_or_list)
self._collection.ensure_index(key_or_list)
# Ensure indexes created by uniqueness constraints
for index in self._document._meta['unique_indexes']:
self._collection.ensure_index(index, unique=True)
# If _types is being used (for polymorphism), it needs an index
if '_types' in self._query:
self._collection.ensure_index('_types')
# Ensure all needed field indexes are created
for field_name, field_instance in self._document._fields.iteritems():
if field_instance.__class__.__name__ == 'GeoLocationField':
self._collection.ensure_index([(field_name, pymongo.GEO2D),])
for field in self._document._fields.values():
if field.__class__._geo_index:
index_spec = [(field.db_field, pymongo.GEO2D)]
self._collection.ensure_index(index_spec)
return self._collection_obj
@property
@@ -311,9 +312,10 @@ class QuerySet(object):
"""Transform a query from Django-style format to Mongo format.
"""
operators = ['ne', 'gt', 'gte', 'lt', 'lte', 'in', 'nin', 'mod',
'all', 'size', 'exists', 'near']
match_operators = ['contains', 'icontains', 'startswith',
'istartswith', 'endswith', 'iendswith',
'all', 'size', 'exists']
geo_operators = ['within_distance', 'within_box', 'near']
match_operators = ['contains', 'icontains', 'startswith',
'istartswith', 'endswith', 'iendswith',
'exact', 'iexact']
mongo_query = {}
@@ -321,7 +323,7 @@ class QuerySet(object):
parts = key.split('__')
# Check for an operator and transform to mongo-style if there is
op = None
if parts[-1] in operators + match_operators:
if parts[-1] in operators + match_operators + geo_operators:
op = parts.pop()
if _doc_cls:
@@ -335,15 +337,27 @@ class QuerySet(object):
singular_ops += match_operators
if op in singular_ops:
value = field.prepare_query_value(op, value)
elif op in ('in', 'nin', 'all'):
elif op in ('in', 'nin', 'all', 'near'):
# 'in', 'nin' and 'all' require a list of values
value = [field.prepare_query_value(op, v) for v in value]
if field.__class__.__name__ == 'GenericReferenceField':
parts.append('_ref')
if op and op not in match_operators:
value = {'$' + op: value}
# if op and op not in match_operators:
if op:
if op in geo_operators:
if op == "within_distance":
value = {'$within': {'$center': value}}
elif op == "near":
value = {'$near': value}
elif op == 'within_box':
value = {'$within': {'$box': value}}
else:
raise NotImplementedError("Geo method '%s' has not "
"been implemented" % op)
elif op not in match_operators:
value = {'$' + op: value}
key = '.'.join(parts)
if op is None or key not in mongo_query: