def _get_data(self):
if not self._indexes:
#warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
self._iter = SphinxQuery(self.query_string, self._query_args)
self._result_cache = []
self._metadata = self._iter.meta
self._fill_cache()
def _init_data(self):
if not self._indexes:
#warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
# print self.query_string
self._iter = SphinxQuery(self.query_string, self._query_args)
self._metadata = self._iter.meta
def _init_data(self):
if not self._indexes:
# warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
# print self.query_string
self._iter = SphinxQuery(self.query_string, self._query_args)
self._metadata = self._iter.meta
def _get_data(self):
if not self._indexes:
#warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
self._iter = SphinxQuery(self.query_string, self._query_args)
self._result_cache = []
self._metadata = self._iter.meta
self._fill_cache()
class SphinxQuerySet(object):
__index_match = re.compile(r'[^a-z0-9_-]*', re.I)
def __init__(self, model=None, using=None, **kwargs):
self.model = model
self.using = using
self.realtime = None
self._doc_ids = None
self._iter = None
self._query = None
self._query_args = None
self._field_names = {}
self._fields = '*'
self._aliases = {}
self._group_by = ''
self._order_by = ''
self._group_order_by = ''
self._filters = {}
self._excludes = {}
_q_opts = kwargs.pop('query_options', SPHINX_QUERY_OPTS)
if 'ranker' not in _q_opts:
_q_opts['ranker'] = 'bm25'
self._query_opts = self._format_options(**_q_opts)
self._result_cache = None
self._doc_fields_cache = {}
self._index_fields_cache = None
self._metadata = None
self._maxmatches = min(kwargs.pop('maxmatches', SPHINX_MAX_MATCHES), SPHINX_MAX_MATCHES)
self._limit = min(kwargs.pop('limit', SPHINX_QUERY_LIMIT), self._maxmatches)
self._offset = None
self._snippets = kwargs.pop('snippets', SPHINX_SNIPPETS)
self._snippets_opts = kwargs.pop('snippets_options', SPHINX_SNIPPETS_OPTS)
self._snippets_string = None
if model:
#self._indexes = self._parse_indexes(kwargs.pop('index', model._meta.db_table))
self._indexes = [model._meta.db_table]
model_options = model.__sphinx_options__
if model_options.get('realtime', False):
self.realtime = '%s_rt' % model._meta.db_table
self._indexes.append(self.realtime)
else:
self._indexes = self._parse_indexes(kwargs.pop('index', None))
def __len__(self):
return self.count()
def __iter__(self):
if self._result_cache is None:
try:
self._get_data()
except MySQLdb.ProgrammingError as e:
raise SearchError(e.args)
return iter(self._result_cache)
def __repr__(self):
return repr(self.__iter__())
def __getitem__(self, k):
"""
Retrieves an item or slice from the set of results.
"""
if not isinstance(k, (slice,) + six.integer_types):
raise TypeError
assert ((not isinstance(k, slice) and (k >= 0))
or (isinstance(k, slice) and (k.start is None or k.start >= 0)
and (k.stop is None or k.stop >= 0))),\
"Negative indexing is not supported."
if isinstance(k, slice):
qs = self._clone()
start = int(k.start) if k.start is not None else 0
stop = int(k.stop) if k.stop is not None else None
qs._set_limits(start, stop)
qs._get_data()
return k.step and list(qs)[::k.step] or qs
try:
qs = self._clone()
qs._set_limits(k, k + 1)
qs._get_data()
return list(qs)[0]
except Exception as e:
raise IndexError(e.args)
# Indexes
def add_index(self, index):
if self.model is not None:
raise SearchError('You can not add an index to the model')
_indexes = self._indexes[:]
for x in self._parse_indexes(index):
if x not in _indexes:
_indexes.append(x)
return self._clone(_indexes=_indexes)
def remove_index(self, index):
if self.model is not None:
raise SearchError('You can not remove an index from model')
_indexes = self._indexes[:]
for x in self._parse_indexes(index):
if x in _indexes:
_indexes.pop(_indexes.index(x))
return self._clone(_indexes=_indexes)
# Querying
def query(self, query):
return self._clone(_query=force_unicode(query))
def filter(self, **kwargs):
filters = self._filters.copy()
return self._clone(_filters=self._process_filters(filters, False, **kwargs))
def exclude(self, **kwargs):
filters = self._excludes.copy()
return self._clone(_excludes=self._process_filters(filters, True, **kwargs))
def fields(self, *args, **kwargs):
fields = ''
aliases = {}
if args:
fields = '`%s`' % '`, `'.join(args)
if kwargs:
for k, v in kwargs.items():
aliases[k] = '%s AS `%s`' % (v, k)
if fields or aliases:
return self._clone(_fields=fields, _aliases=aliases)
return self
def options(self, **kwargs):
if not kwargs:
return self
return self._clone(_query_opts=self._format_options(**kwargs))
def snippets(self, snippets=True, **kwargs):
if snippets == self._snippets and not kwargs:
return self
for k, v in kwargs.items():
if isinstance(v, bool):
v = int(v)
return self._clone(_snippets_opts=kwargs, _snippets=snippets, _snippets_opts_string=None)
# Currently only supports grouping by a single column.
# The column however can be a computed expression
def group_by(self, field):
return self._clone(_group_by='GROUP BY `%s`' % field)
def order_by(self, *args):
sort_by = []
for arg in args:
order = 'ASC'
if arg[0] == '-':
order = 'DESC'
arg = arg[1:]
if arg == 'pk':
arg = 'id'
sort_by.append('`%s` %s' % (arg, order))
if sort_by:
return self._clone(_order_by='ORDER BY %s' % ', '.join(sort_by))
return self
def group_order_by(self, *args):
sort_by = []
for arg in args:
order = 'ASC'
if arg[0] == '-':
order = 'DESC'
arg = arg[1:]
if arg == 'pk':
arg = 'id'
sort_by.append('`%s` %s' % (arg, order))
if sort_by:
return self._clone(_group_order_by='WITHIN GROUP ORDER BY %s' % ', '.join(sort_by))
return self
def count(self):
return min(int(self.meta.get('total_found', 0)), self._maxmatches)
# Возвращяет все объекты из индекса. Размер списка ограничен только
# значением maxmatches
def all(self):
return self._clone(_limit=self._maxmatches, _offset=None)
def none(self):
qs = EmptySphinxQuerySet()
qs.__dict__.update(self.__dict__.copy())
return qs
def reset(self):
return self.__class__(self.model, self.using, index=self._get_index())
def _get_values_for_update(self, obj):
fields = self._get_index_fields()
values = []
for field in fields[:]:
if field == 'id':
f = getattr(obj, 'pk')
f = self._encode_document_id(f)
elif field == 'sphinx_internal_id':
f = getattr(obj, 'pk')
else:
# relative fields like category__name
if '__' in field:
try:
f = reduce(getattr, field.split('__'), obj)
except AttributeError:
# if local field is None thats raise error
f = ''
else:
f = getattr(obj, field)
if hasattr(f, 'through'): # ManyToMany
# пропускаем пока что...
f = [force_unicode(x.pk) for x in f.all()]
elif isinstance(f, six.string_types):
pass
elif isinstance(f, six.integer_types) or isinstance(f, (bool, date, datetime, float, decimal.Decimal)):
f = to_sphinx(f)
else:
model_filed = obj._meta.get_field(field)
if isinstance(model_filed, RelatedField):
f = to_sphinx(getattr(obj, model_filed.column))
else:
raise SearchError('Unknown field `%s`' % type(f))
values.append(f)
return values
def create(self, *args, **kwargs):
values = ()
if self.model:
assert len(args) == 1, \
'Model RT-index can be updated by object instance or queryset'
obj = args[0]
if isinstance(obj, self.model):
# один объект, один документ
values = (self._get_values_for_update(obj),)
elif isinstance(obj, QuerySet):
# несколько объектов, несколько документов
values = map(self._get_values_for_update, obj)
else:
raise SearchError('Can`t `%s` not an instance/queryset of `%s`' % (obj, self.model))
else:
raise NotImplementedError('Non-model RT-index update not supported yet')
if not values:
raise SearchError('Empty QuerySet? o_O')
query = ['REPLACE' if kwargs.pop('force_update', False) else 'INSERT']
query.append('INTO %s' % self.realtime)
query.append('(%s)' % ','.join(self._get_index_fields()))
query.append('VALUES')
query_args = []
q = []
for v in values:
f_list = []
for f in v:
if isinstance(f, six.string_types):
query_args.append(f)
f_list.append('{}')
elif isinstance(f, (list, tuple)):
f_list.append('(%s)' % ','.join(f))
else:
f_list.append(force_unicode(f))
q.append('(%s)' % ','.join(f_list))
query.append(', '.join(q))
cursor = conn_handler.cursor()
count = cursor.execute(' '.join(query), query_args)
return count
def update(self, **kwargs):
raise NotImplementedError('Update not implemented yet')
def delete(self):
"""
Удаляет из индекса документы, удовлетворяющие условиям filter
"""
assert self._can_modify(),\
"Cannot use 'limit' or 'offset' with delete."
q = ['DELETE FROM %s WHERE' % self.realtime]
if len(self._doc_ids) == 1:
where = 'id = %i' % self._doc_ids[0]
else:
where = 'id IN (%s)' % ','.join(str(id) for id in self._doc_ids)
q.append(where)
query = ' '.join(q)
cursor = conn_handler.cursor()
cursor.execute(query, self._query_args)
# misc
def keywords(self, text, index=None, hits=None):
"""\
Возвращает генератор со списком ключевых слов
для переданного текста\
"""
if index is None:
# пока только для одного индекса
index = self._indexes[0]
query = 'CALL KEYWORDS (%s)'
q = ['%s', '%s']
if hits is not None and hits:
q.append('1')
query = query % ', '.join(q)
cursor = conn_handler.cursor()
count = cursor.execute(query, [text, index])
for x in range(0, count):
yield cursor.fetchone()
def get_query_set(self, model):
qs = model._default_manager
if self.using is not None:
qs = qs.db_manager(self.using)
return qs.all()
# Properties
def _meta(self):
if self._metadata is None:
self._get_data()
return self._metadata
meta = property(_meta)
def _get_snippets_string(self):
if self._snippets_string is None:
opts_list = []
for k, v in self._snippets_opts.items():
opt = ('\'%s\' AS %s' if isinstance(v, six.string_types) else '%s AS %s') % (v, k)
opts_list.append(opt)
if opts_list:
self._snippets_string = ', %s' % ', '.join(opts_list)
return self._snippets_string or ''
#internal
def _set_limits(self, start, stop=None):
if start is not None:
self._offset = int(start)
else:
start = 0
if stop is not None:
self._limit = stop - start
def _can_modify(self):
if self.realtime is None:
raise SearchError('Documents can`t be modified on the non-realtime index')
assert self._doc_ids is not None \
and not self._excludes and self._query is None\
and len(self._filters) == 1 and 'id' in self._filters, \
'Only {id = value | id IN (val1 [, val2 [, ...]])} filters allowed here'
return self._offset is None
def _get_data(self):
if not self._indexes:
#warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
self._iter = SphinxQuery(self.query_string, self._query_args)
self._result_cache = []
self._metadata = self._iter.meta
self._fill_cache()
## Options
def _parse_indexes(self, index):
if index is None:
return list()
return [x.lower() for x in re.split(self.__index_match, index) if x]
def _get_index(self):
return ' '.join(self._indexes)
def _format_options_dict(self, d):
return '(%s)' % ', '.join(['%s=%s' % (x, d[x]) for x in d])
def _format_options(self, **kwargs):
if not kwargs:
return ''
opts = []
for k, v in kwargs.items():
if isinstance(v, bool):
v = int(v)
elif isinstance(v, dict):
v = self._format_options_dict(v)
opts.append('%s=%s' % (k, v))
return 'OPTION %s' % ','.join(opts)
## Cache
def _fill_cache(self, num=None):
fields = self.meta['fields'].copy()
id_pos = fields.pop('id')
ct = None
results = {}
docs = OrderedDict()
if self._iter:
try:
while True:
doc = self._iter.next()
doc_id = doc[id_pos]
obj_id, ct = self._decode_document_id(int(doc_id))
results.setdefault(ct, {})[obj_id] = {}
docs.setdefault(doc_id, {})['results'] = results[ct][obj_id]
docs[doc_id]['data'] = {}
for field in fields:
docs[doc_id]['data'].setdefault('fields', {})[field] = doc[fields[field]]
except StopIteration:
self._iter = None
if not docs:
self._result_cache = []
return
if self.model is None and len(self._indexes) == 1 and ct is not None:
self.model = ContentType.objects.get(pk=ct).model_class()
if self.model:
qs = self.get_query_set(self.model)
qs = qs.filter(pk__in=results[ct].keys())
for obj in qs:
results[ct][obj.pk]['obj'] = obj
else:
for ct in results:
model_class = ContentType.objects.get(pk=ct).model_class()
qs = self.get_query_set(model_class).filter(pk__in=results[ct].keys())
for obj in qs:
results[ct][obj.pk]['obj'] = obj
#clear missing items
for pk in [pk for pk, doc in docs.items() if not 'obj' in doc['results']]:
del docs[pk]
if self._snippets:
for doc in docs.values():
doc['data']['snippets'] = self._get_snippets(doc['results']['obj'])
self._result_cache.append(SphinxProxy(doc['results']['obj'], doc['data']))
else:
for doc in docs.values():
self._result_cache.append(SphinxProxy(doc['results']['obj'], doc['data']))
## Snippets
def _get_snippets(self, instance):
(fields, docs) = zip(*[(f, getattr(instance, f)) for f in self._get_doc_fields(instance) if getattr(instance, f)])
opts = self._get_snippets_string()
doc_format = ', '.join('%s' for x in range(0, len(fields)))
query = 'CALL SNIPPETS (({0:>s}), \'{1:>s}\', %s {2:>s})'.format(doc_format,
instance.__sphinx_indexes__[0],
opts)
docs += (self._query or '',)
c = conn_handler.cursor()
c.execute(query, docs)
snippets = {}
for field in fields:
snippets[field] = c.fetchone()[0].decode('utf-8')
return snippets
def _get_doc_fields(self, instance):
cache = self._doc_fields_cache.get(type(instance), None)
if cache is None:
def _get_field(name):
return instance._meta.get_field(name)
opts = instance.__sphinx_options__
included = opts.get('included_fields', [])
excluded = opts.get('excluded_fields', [])
stored_attrs = opts.get('stored_attributes', [])
stored_fields = opts.get('stored_fields', [])
if included:
included = [f for f in included if
f not in excluded
and
get_sphinx_attr_type_for_field(_get_field(f)) == 'string']
for f in stored_fields:
if get_sphinx_attr_type_for_field(_get_field(f)) == 'string':
included.append(f)
else:
included = [f.name for f in instance._meta.fields
if
f.name not in excluded
and
(f.name not in stored_attrs
or
f.name in stored_fields)
and
get_sphinx_attr_type_for_field(f) == 'string']
cache = self._doc_fields_cache[type(instance)] = included
return cache
def _get_index_fields(self):
if self._index_fields_cache is None:
opts = self.model.__sphinx_options__
excluded = opts.get('excluded_fields', [])
fields = []
for f in ['included_fields', 'stored_attributes',
'stored_fields', 'related_fields', 'mva_fields', 'related_string_fields']:
fields.extend(opts.get(f, []))
for f in excluded:
if f in fields:
fields.pop(fields.index(f))
fields.insert(0, 'id')
fields.insert(1, 'sphinx_internal_id')
self._index_fields_cache = fields
return self._index_fields_cache
## Documents
def _decode_document_id(self, doc_id):
"""\
Декодирует ID документа, полученного от Sphinx
:param doc_id: ID документа
:type doc_id: long
:returns: tuple(ContentTypeID, ObjectID)
:rtype: tuple\
"""
assert isinstance(doc_id, six.integer_types)
ct = (doc_id & CONTENT_TYPE_MASK) >> DOCUMENT_ID_SHIFT
return (doc_id & OBJECT_ID_MASK, ct)
def _encode_document_id(self, id):
if self.model:
ct = ContentType.objects.get_for_model(self.model)
id = int(ct.id) << DOCUMENT_ID_SHIFT | id
return id
## Filters
def _process_single_obj_operation(self, obj):
if isinstance(obj, models.Model):
if self.model is None:
raise ValueError('For non model or multiple model indexes comparsion with objects not supported')
value = obj.pk
elif not isinstance(obj, (list, tuple, QuerySet)):
value = obj
else:
raise TypeError('Comparison operations require a single object, not a `%s`' % type(obj))
return to_sphinx(value)
def _process_obj_list_operation(self, obj_list):
if isinstance(obj_list, (models.Model, QuerySet)):
if self.model is None:
raise ValueError('For non model or multiple model indexes comparsion with objects not supported')
if isinstance(obj_list, models.Model):
values = [obj_list.pk]
else:
values = [obj.pk for obj in obj_list]
elif hasattr(obj_list, '__iter__') or isinstance(obj_list, (list, tuple)):
values = list(obj_list)
elif isinstance(obj_list, (int, float, date, datetime)):
values = [obj_list]
else:
raise ValueError('`%s` is not a list of objects and not single object' % type(obj_list))
return map(to_sphinx, values)
def _process_filters(self, filters, exclude=False, **kwargs):
for k, v in kwargs.items():
if len(k.split('__')) > 3:
raise NotImplementedError('Related model fields lookup not supported')
parts = k.rsplit('__', 1)
parts_len = len(parts)
field = parts[0]
lookup = parts[-1]
if field == 'pk': # приводим pk к id
field = 'id'
if parts_len == 1: # один
if field == 'id':
v = self._encode_document_id(self._process_single_obj_operation(v))
self._doc_ids = [v]
else:
v = self._process_single_obj_operation(v)
filters[field] = '%s %s %s' % (field,
'!=' if exclude else '=',
v)
elif parts_len == 2: # один exact или список, или сравнение
if lookup == 'in':
if field == 'id':
v = map(self._encode_document_id, self._process_obj_list_operation(v))
self._doc_ids = v
else:
v = self._process_obj_list_operation(v)
filters[field] = '%s %sIN (%s)' % (field,
'NOT ' if exclude else '',
','.join(str(x) for x in v))
elif lookup == 'range':
v = self._process_obj_list_operation(v)
if len(v) != 2:
raise ValueError('Range may consist of two values')
if exclude:
# not supported by sphinx. raises error!
warnings.warn('Exclude range not supported by SphinxQL now!')
filters[field] = 'NOT %s BETWEEN %i AND %i' % (field, v[0], v[1])
else:
filters[field] = '%s BETWEEN %i AND %i' % (field, v[0], v[1])
elif lookup in FILTER_CMP_OPERATIONS:
filters[field] = '%s %s %s' % (field,
FILTER_CMP_INVERSE[lookup]\
if exclude\
else FILTER_CMP_OPERATIONS[lookup],
self._process_single_obj_operation(v))
else: # stored related field
filters[k] = '%s %s %s' % (k,
'!=' if exclude else '=',
self._process_single_obj_operation(v))
return filters
## Query
def _build_query(self):
self._query_args = []
q = ['SELECT']
q.extend(self._build_fields())
q.extend(['FROM', ', '.join(self._indexes)])
q.extend(self._build_where())
q.append(self._build_group_by())
q.append(self._build_order_by())
q.append(self._build_group_order_by())
q.extend(self._build_limits())
if self._query_opts is not None:
q.append(self._query_opts)
return ' '.join(q)
query_string = property(_build_query)
def _build_fields(self):
q = []
if self._fields:
q.append(self._fields)
if self._aliases:
q.append(',')
if self._aliases:
q.append(', '.join(self._aliases.values()))
return q
def _build_where(self):
q = []
if self._query or self._filters or self._excludes:
q.append('WHERE')
if self._query:
q.append('MATCH({})')
self._query_args.append(self._query)
if self._filters or self._excludes:
q.append('AND')
if self._filters:
q.append(' AND '.join(self._filters.values()))
if self._excludes:
q.append('AND')
if self._excludes:
q.append(' AND '.join(self._excludes.values()))
return q
def _build_group_by(self):
return self._group_by
def _build_order_by(self):
return self._order_by
def _build_group_order_by(self):
return self._group_order_by
def _build_limits(self):
if self._limit is None:
return ''
q = ['LIMIT']
if self._offset is not None:
q.append('%i,' % self._offset)
q.append('%i' % (self._limit if self._limit is not None else self._maxmatches))
return q
## Clone
def _clone(self, **kwargs):
"""\
Clones the queryset passing any changed args\
"""
c = self.__class__()
c.__dict__.update(self.__dict__.copy())
c._result_cache = None
c._metadata = None
c._iter = None
for k, v in kwargs.items():
setattr(c, k, v)
return c
class SphinxQuerySet(object):
__index_match = re.compile(r'[^a-z0-9_-]*', re.I)
def __init__(self, model=None, using=None, **kwargs):
self.model = model
self.using = using
self.realtime = None
self._doc_ids = None
self._iter = None
self._query = None
self._query_args = None
self._field_names = {}
self._fields = '*'
self._aliases = {}
self._group_by = ''
self._order_by = ''
self._group_order_by = ''
self._filters = {}
self._excludes = {}
_q_opts = kwargs.pop('query_options', SPHINX_QUERY_OPTS)
if 'ranker' not in _q_opts:
_q_opts['ranker'] = 'bm25'
self._query_opts = self._format_options(**_q_opts)
self._result_cache = None
self._doc_fields_cache = {}
self._index_fields_cache = None
self._metadata = None
self._maxmatches = min(kwargs.pop('maxmatches', SPHINX_MAX_MATCHES),
SPHINX_MAX_MATCHES)
self._limit = min(kwargs.pop('limit', SPHINX_QUERY_LIMIT),
self._maxmatches)
self._offset = None
self._snippets = kwargs.pop('snippets', SPHINX_SNIPPETS)
self._snippets_opts = kwargs.pop('snippets_options',
SPHINX_SNIPPETS_OPTS)
self._snippets_string = None
if model:
#self._indexes = self._parse_indexes(kwargs.pop('index', model._meta.db_table))
self._indexes = [model._meta.db_table]
model_options = model.__sphinx_options__
if model_options.get('realtime', False):
self.realtime = '%s_rt' % model._meta.db_table
self._indexes.append(self.realtime)
else:
self._indexes = self._parse_indexes(kwargs.pop('index', None))
def __len__(self):
return self.count()
def __iter__(self):
if self._result_cache is None:
try:
self._get_data()
except MySQLdb.ProgrammingError as e:
raise SearchError(e.args)
return iter(self._result_cache)
def __repr__(self):
return repr(self.__iter__())
def __getitem__(self, k):
"""
Retrieves an item or slice from the set of results.
"""
if not isinstance(k, (slice, ) + six.integer_types):
raise TypeError
assert ((not isinstance(k, slice) and (k >= 0))
or (isinstance(k, slice) and (k.start is None or k.start >= 0)
and (k.stop is None or k.stop >= 0))),\
"Negative indexing is not supported."
if isinstance(k, slice):
qs = self._clone()
start = int(k.start) if k.start is not None else 0
stop = int(k.stop) if k.stop is not None else None
qs._set_limits(start, stop)
qs._get_data()
return k.step and list(qs)[::k.step] or qs
try:
qs = self._clone()
qs._set_limits(k, k + 1)
qs._get_data()
return list(qs)[0]
except Exception as e:
raise IndexError(e.args)
# Indexes
def add_index(self, index):
if self.model is not None:
raise SearchError('You can not add an index to the model')
_indexes = self._indexes[:]
for x in self._parse_indexes(index):
if x not in _indexes:
_indexes.append(x)
return self._clone(_indexes=_indexes)
def remove_index(self, index):
if self.model is not None:
raise SearchError('You can not remove an index from model')
_indexes = self._indexes[:]
for x in self._parse_indexes(index):
if x in _indexes:
_indexes.pop(_indexes.index(x))
return self._clone(_indexes=_indexes)
# Querying
def query(self, query):
return self._clone(_query=force_unicode(query))
def filter(self, **kwargs):
filters = self._filters.copy()
return self._clone(
_filters=self._process_filters(filters, False, **kwargs))
def exclude(self, **kwargs):
filters = self._excludes.copy()
return self._clone(
_excludes=self._process_filters(filters, True, **kwargs))
def fields(self, *args, **kwargs):
fields = ''
aliases = {}
if args:
fields = '`%s`' % '`, `'.join(args)
if kwargs:
for k, v in kwargs.iteritems():
aliases[k] = '%s AS `%s`' % (v, k)
if fields or aliases:
return self._clone(_fields=fields, _aliases=aliases)
return self
def options(self, **kwargs):
if not kwargs:
return self
return self._clone(_query_opts=self._format_options(**kwargs))
def snippets(self, snippets=True, **kwargs):
if snippets == self._snippets and not kwargs:
return self
for k, v in kwargs.iteritems():
if isinstance(v, bool):
v = int(v)
return self._clone(_snippets_opts=kwargs,
_snippets=snippets,
_snippets_opts_string=None)
# Currently only supports grouping by a single column.
# The column however can be a computed expression
def group_by(self, field):
return self._clone(_group_by='GROUP BY `%s`' % field)
def order_by(self, *args):
sort_by = []
for arg in args:
order = 'ASC'
if arg[0] == '-':
order = 'DESC'
arg = arg[1:]
if arg == 'pk':
arg = 'id'
sort_by.append('`%s` %s' % (arg, order))
if sort_by:
return self._clone(_order_by='ORDER BY %s' % ', '.join(sort_by))
return self
def group_order_by(self, *args):
sort_by = []
for arg in args:
order = 'ASC'
if arg[0] == '-':
order = 'DESC'
arg = arg[1:]
if arg == 'pk':
arg = 'id'
sort_by.append('`%s` %s' % (arg, order))
if sort_by:
return self._clone(_group_order_by='WITHIN GROUP ORDER BY %s' %
', '.join(sort_by))
return self
def count(self):
return min(int(self.meta.get('total_found', 0)), self._maxmatches)
# Возвращяет все объекты из индекса. Размер списка ограничен только
# значением maxmatches
def all(self):
return self._clone(_limit=self._maxmatches, _offset=None)
def none(self):
qs = EmptySphinxQuerySet()
qs.__dict__.update(self.__dict__.copy())
return qs
def reset(self):
return self.__class__(self.model, self.using, index=self._get_index())
def _get_values_for_update(self, obj):
fields = self._get_index_fields()
values = []
for field in fields[:]:
if field == 'id':
f = getattr(obj, 'pk')
f = self._encode_document_id(f)
else:
f = getattr(obj, field)
if hasattr(f, 'through'): # ManyToMany
# пропускаем пока что...
f = [force_unicode(x.pk) for x in f.all()]
elif isinstance(f, six.string_types):
pass
elif isinstance(f, six.integer_types) or isinstance(
f, (bool, date, datetime, float, decimal.Decimal)):
f = to_sphinx(f)
else:
model_filed = obj._meta.get_field(field)
if isinstance(model_filed, RelatedField):
f = to_sphinx(getattr(obj, model_filed.column))
else:
raise SearchError('Unknown field `%s`' % type(f))
values.append(f)
return values
def create(self, *args, **kwargs):
values = ()
if self.model:
assert len(args) == 1, \
'Model RT-index can be updated by object instance or queryset'
obj = args[0]
if isinstance(obj, self.model):
# один объект, один документ
values = (self._get_values_for_update(obj), )
elif isinstance(obj, QuerySet):
# несколько объектов, несколько документов
values = map(self._get_values_for_update, obj)
else:
raise SearchError(
'Can`t `%s` not an instance/queryset of `%s`' %
(obj, self.model))
else:
raise NotImplementedError(
'Non-model RT-index update not supported yet')
if not values:
raise SearchError('Empty QuerySet? o_O')
query = ['REPLACE' if kwargs.pop('force_update', False) else 'INSERT']
query.append('INTO %s' % self.realtime)
query.append('(%s)' % ','.join(self._get_index_fields()))
query.append('VALUES')
query_args = []
q = []
for v in values:
f_list = []
for f in v:
if isinstance(f, six.string_types):
query_args.append(f)
f_list.append('%s')
elif isinstance(f, (list, tuple)):
f_list.append('(%s)' % ','.join(f))
else:
f_list.append(force_unicode(f))
q.append('(%s)' % ','.join(f_list))
query.append(', '.join(q))
cursor = conn_handler.cursor()
count = cursor.execute(' '.join(query), query_args)
return count
def update(self, **kwargs):
raise NotImplementedError('Update not implemented yet')
def delete(self):
"""
Удаляет из индекса документы, удовлетворяющие условиям filter
"""
assert self._can_modify(),\
"Cannot use 'limit' or 'offset' with delete."
q = ['DELETE FROM %s WHERE' % self.realtime]
if len(self._doc_ids) == 1:
where = 'id = %i' % self._doc_ids[0]
else:
where = 'id IN (%s)' % ','.join(str(id) for id in self._doc_ids)
q.append(where)
query = ' '.join(q)
cursor = conn_handler.cursor()
cursor.execute(query, self._query_args)
# misc
def keywords(self, text, index=None, hits=None):
"""\
Возвращает генератор со списком ключевых слов
для переданного текста\
"""
if index is None:
# пока только для одного индекса
index = self._indexes[0]
query = 'CALL KEYWORDS (%s)'
q = ['%s', '%s']
if hits is not None and hits:
q.append('1')
query = query % ', '.join(q)
cursor = conn_handler.cursor()
count = cursor.execute(query, [text, index])
for x in range(0, count):
yield cursor.fetchone()
def get_query_set(self, model):
qs = model._default_manager
if self.using is not None:
qs = qs.db_manager(self.using)
return qs.all()
# Properties
def _meta(self):
if self._metadata is None:
self._get_data()
return self._metadata
meta = property(_meta)
def _get_snippets_string(self):
if self._snippets_string is None:
opts_list = []
for k, v in self._snippets_opts.iteritems():
opt = ('\'%s\' AS %s' if isinstance(v, six.string_types) else
'%s AS %s') % (v, k)
opts_list.append(opt)
if opts_list:
self._snippets_string = ', %s' % ', '.join(opts_list)
return self._snippets_string or ''
#internal
def _set_limits(self, start, stop=None):
if start is not None:
self._offset = int(start)
else:
start = 0
if stop is not None:
self._limit = stop - start
def _can_modify(self):
if self.realtime is None:
raise SearchError(
'Documents can`t be modified on the non-realtime index')
assert self._doc_ids is not None \
and not self._excludes and self._query is None\
and len(self._filters) == 1 and 'id' in self._filters, \
'Only {id = value | id IN (val1 [, val2 [, ...]])} filters allowed here'
return self._offset is None
def _get_data(self):
if not self._indexes:
#warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
self._iter = SphinxQuery(self.query_string, self._query_args)
self._result_cache = []
self._metadata = self._iter.meta
self._fill_cache()
## Options
def _parse_indexes(self, index):
if index is None:
return list()
return [x.lower() for x in re.split(self.__index_match, index) if x]
def _get_index(self):
return ' '.join(self._indexes)
def _format_options_dict(self, d):
return '(%s)' % ', '.join(['%s=%s' % (x, d[x]) for x in d])
def _format_options(self, **kwargs):
if not kwargs:
return ''
opts = []
for k, v in kwargs.iteritems():
if isinstance(v, bool):
v = int(v)
elif isinstance(v, dict):
v = self._format_options_dict(v)
opts.append('%s=%s' % (k, v))
return 'OPTION %s' % ','.join(opts)
## Cache
def _fill_cache(self, num=None):
fields = self.meta['fields'].copy()
id_pos = fields.pop('id')
ct = None
results = {}
docs = OrderedDict()
if self._iter:
try:
while True:
doc = self._iter.next()
doc_id = doc[id_pos]
obj_id, ct = self._decode_document_id(int(doc_id))
results.setdefault(ct, {})[obj_id] = {}
docs.setdefault(doc_id,
{})['results'] = results[ct][obj_id]
docs[doc_id]['data'] = {}
for field in fields:
docs[doc_id]['data'].setdefault(
'fields', {})[field] = doc[fields[field]]
except StopIteration:
self._iter = None
if not docs:
self._result_cache = []
return
if self.model is None and len(
self._indexes) == 1 and ct is not None:
self.model = ContentType.objects.get(pk=ct).model_class()
if self.model:
qs = self.get_query_set(self.model)
qs = qs.filter(pk__in=results[ct].keys())
for obj in qs:
results[ct][obj.pk]['obj'] = obj
else:
for ct in results:
model_class = ContentType.objects.get(
pk=ct).model_class()
qs = self.get_query_set(model_class).filter(
pk__in=results[ct].keys())
for obj in qs:
results[ct][obj.pk]['obj'] = obj
#clear missing items
for pk in [
pk for pk, doc in docs.items()
if not 'obj' in doc['results']
]:
del docs[pk]
if self._snippets:
for doc in docs.values():
doc['data']['snippets'] = self._get_snippets(
doc['results']['obj'])
self._result_cache.append(
SphinxProxy(doc['results']['obj'], doc['data']))
else:
for doc in docs.values():
self._result_cache.append(
SphinxProxy(doc['results']['obj'], doc['data']))
## Snippets
def _get_snippets(self, instance):
(fields, docs) = zip(*[(f, getattr(instance, f))
for f in self._get_doc_fields(instance)
if getattr(instance, f)])
opts = self._get_snippets_string()
doc_format = ', '.join('%s' for x in range(0, len(fields)))
query = 'CALL SNIPPETS (({0:>s}), \'{1:>s}\', %s {2:>s})'.format(
doc_format, instance.__sphinx_indexes__[0], opts)
docs += (self._query or '', )
c = conn_handler.cursor()
c.execute(query, docs)
snippets = {}
for field in fields:
snippets[field] = c.fetchone()[0].decode('utf-8')
return snippets
def _get_doc_fields(self, instance):
cache = self._doc_fields_cache.get(type(instance), None)
if cache is None:
def _get_field(name):
return instance._meta.get_field(name)
opts = instance.__sphinx_options__
included = opts.get('included_fields', [])
excluded = opts.get('excluded_fields', [])
stored_attrs = opts.get('stored_attributes', [])
stored_fields = opts.get('stored_fields', [])
if included:
included = [
f for f in included
if f not in excluded and get_sphinx_attr_type_for_field(
_get_field(f)) == 'string'
]
for f in stored_fields:
if get_sphinx_attr_type_for_field(
_get_field(f)) == 'string':
included.append(f)
else:
included = [
f.name for f in instance._meta.fields
if f.name not in excluded and (
f.name not in stored_attrs or f.name in stored_fields)
and get_sphinx_attr_type_for_field(f) == 'string'
]
cache = self._doc_fields_cache[type(instance)] = included
return cache
def _get_index_fields(self):
if self._index_fields_cache is None:
opts = self.model.__sphinx_options__
excluded = opts.get('excluded_fields', [])
fields = []
for f in [
'included_fields', 'stored_attributes', 'stored_fields',
'related_fields', 'mva_fields'
]:
fields.extend(opts.get(f, []))
for f in excluded:
if f in fields:
fields.pop(fields.index(f))
fields.insert(0, 'id')
self._index_fields_cache = fields
return self._index_fields_cache
## Documents
def _decode_document_id(self, doc_id):
"""\
Декодирует ID документа, полученного от Sphinx
:param doc_id: ID документа
:type doc_id: long
:returns: tuple(ContentTypeID, ObjectID)
:rtype: tuple\
"""
assert isinstance(doc_id, six.integer_types)
ct = (doc_id & CONTENT_TYPE_MASK) >> DOCUMENT_ID_SHIFT
return (doc_id & OBJECT_ID_MASK, ct)
def _encode_document_id(self, id):
if self.model:
ct = ContentType.objects.get_for_model(self.model)
id = int(ct.id) << DOCUMENT_ID_SHIFT | id
return id
## Filters
def _process_single_obj_operation(self, obj):
if isinstance(obj, models.Model):
if self.model is None:
raise ValueError(
'For non model or multiple model indexes comparsion with objects not supported'
)
value = obj.pk
elif not isinstance(obj, (list, tuple, QuerySet)):
value = obj
else:
raise TypeError(
'Comparison operations require a single object, not a `%s`' %
type(obj))
return to_sphinx(value)
def _process_obj_list_operation(self, obj_list):
if isinstance(obj_list, (models.Model, QuerySet)):
if self.model is None:
raise ValueError(
'For non model or multiple model indexes comparsion with objects not supported'
)
if isinstance(obj_list, models.Model):
values = [obj_list.pk]
else:
values = [obj.pk for obj in obj_list]
elif hasattr(obj_list, '__iter__') or isinstance(
obj_list, (list, tuple)):
values = list(obj_list)
elif isinstance(obj_list, (int, float, date, datetime)):
values = [obj_list]
else:
raise ValueError(
'`%s` is not a list of objects and not single object' %
type(obj_list))
return map(to_sphinx, values)
def _process_filters(self, filters, exclude=False, **kwargs):
for k, v in kwargs.iteritems():
if len(k.split('__')) > 3:
raise NotImplementedError(
'Related model fields lookup not supported')
parts = k.rsplit('__', 1)
parts_len = len(parts)
field = parts[0]
lookup = parts[-1]
if field == 'pk': # приводим pk к id
field = 'id'
if parts_len == 1: # один
if field == 'id':
v = self._encode_document_id(
self._process_single_obj_operation(v))
self._doc_ids = [v]
else:
v = self._process_single_obj_operation(v)
filters[field] = '%s %s %s' % (field, '!=' if exclude else '=',
v)
elif parts_len == 2: # один exact или список, или сравнение
if lookup == 'in':
if field == 'id':
v = map(self._encode_document_id,
self._process_obj_list_operation(v))
self._doc_ids = v
else:
v = self._process_obj_list_operation(v)
filters[field] = '%s %sIN (%s)' % (field, 'NOT ' if exclude
else '', ','.join(
str(x) for x in v))
elif lookup == 'range':
v = self._process_obj_list_operation(v)
if len(v) != 2:
raise ValueError('Range may consist of two values')
if exclude:
# not supported by sphinx. raises error!
warnings.warn(
'Exclude range not supported by SphinxQL now!')
filters[field] = 'NOT %s BETWEEN %i AND %i' % (
field, v[0], v[1])
else:
filters[field] = '%s BETWEEN %i AND %i' % (field, v[0],
v[1])
elif lookup in FILTER_CMP_OPERATIONS:
filters[field] = '%s %s %s' % (field,
FILTER_CMP_INVERSE[lookup]\
if exclude\
else FILTER_CMP_OPERATIONS[lookup],
self._process_single_obj_operation(v))
else: # stored related field
filters[k] = '%s %s %s' % (
k, '!=' if exclude else '=',
self._process_single_obj_operation(v))
return filters
## Query
def _build_query(self):
self._query_args = []
q = ['SELECT']
q.extend(self._build_fields())
q.extend(['FROM', ', '.join(self._indexes)])
q.extend(self._build_where())
q.append(self._build_group_by())
q.append(self._build_order_by())
q.append(self._build_group_order_by())
q.extend(self._build_limits())
if self._query_opts is not None:
q.append(self._query_opts)
return ' '.join(q)
query_string = property(_build_query)
def _build_fields(self):
q = []
if self._fields:
q.append(self._fields)
if self._aliases:
q.append(',')
if self._aliases:
q.append(', '.join(self._aliases.values()))
return q
def _build_where(self):
q = []
if self._query or self._filters or self._excludes:
q.append('WHERE')
if self._query:
q.append('MATCH(%s)')
self._query_args.append(self._query)
if self._filters or self._excludes:
q.append('AND')
if self._filters:
q.append(' AND '.join(self._filters.values()))
if self._excludes:
q.append('AND')
if self._excludes:
q.append(' AND '.join(self._excludes.values()))
return q
def _build_group_by(self):
return self._group_by
def _build_order_by(self):
return self._order_by
def _build_group_order_by(self):
return self._group_order_by
def _build_limits(self):
if not self._limit is None and self._offset is None:
return ''
q = ['LIMIT']
if self._offset is not None:
q.append('%i,' % self._offset)
q.append(
'%i' %
(self._limit if self._limit is not None else self._maxmatches))
return q
## Clone
def _clone(self, **kwargs):
"""\
Clones the queryset passing any changed args\
"""
c = self.__class__()
c.__dict__.update(self.__dict__.copy())
c._result_cache = None
c._metadata = None
c._iter = None
for k, v in kwargs.iteritems():
setattr(c, k, v)
return c
class SphinxQuerySet(object):
__index_match = re.compile(r"[^a-z0-9_-]*", re.I)
def __init__(self, model=None, using=None, **kwargs):
self.model = model
self.using = using
self.realtime = None
self._doc_ids = None
self._iter = None
self._query = None
self._query_args = None
self._field_names = {}
self._fields = "*"
self._aliases = {}
self._group_by = ""
self._order_by = ""
self._group_order_by = ""
self._filters = {}
self._excludes = {}
self._values_list = None
_q_opts = kwargs.pop("query_options", SPHINX_QUERY_OPTS)
if "ranker" not in _q_opts:
_q_opts["ranker"] = "bm25"
self._query_opts = self._format_options(**_q_opts)
self._result_cache = None
self._doc_fields_cache = {}
self._index_fields_cache = None
self._metadata = None
self._maxmatches = min(kwargs.pop("maxmatches", SPHINX_MAX_MATCHES), SPHINX_MAX_MATCHES)
self._limit = min(kwargs.pop("limit", SPHINX_QUERY_LIMIT), self._maxmatches)
self._offset = None
self._snippets = kwargs.pop("snippets", SPHINX_SNIPPETS)
self._snippets_opts = kwargs.pop("snippets_options", SPHINX_SNIPPETS_OPTS)
self._snippets_string = None
if model:
# self._indexes = self._parse_indexes(kwargs.pop('index', model._meta.db_table))
self._indexes = [model._meta.db_table]
model_options = model.__sphinx_options__
if model_options.get("realtime", False):
self.realtime = "%s_rt" % model._meta.db_table
self._indexes.append(self.realtime)
else:
self._indexes = self._parse_indexes(kwargs.pop("index", None))
def __len__(self):
return self.count()
def __iter__(self):
if self._result_cache is None:
try:
self._get_data()
except MySQLdb.ProgrammingError as e:
raise SearchError(e.args)
return iter(self._result_cache)
def __repr__(self):
return repr(self.__iter__())
def __getitem__(self, k):
"""
Retrieves an item or slice from the set of results.
"""
if not isinstance(k, (slice,) + six.integer_types):
raise TypeError
assert (not isinstance(k, slice) and (k >= 0)) or (
isinstance(k, slice) and (k.start is None or k.start >= 0) and (k.stop is None or k.stop >= 0)
), "Negative indexing is not supported."
if isinstance(k, slice):
qs = self._clone()
start = int(k.start) if k.start is not None else 0
stop = int(k.stop) if k.stop is not None else None
qs._set_limits(start, stop)
qs._get_data()
return k.step and list(qs)[:: k.step] or qs
try:
qs = self._clone()
qs._set_limits(k, k + 1)
qs._get_data()
return list(qs)[0]
except Exception as e:
raise IndexError(e.args)
# Indexes
def add_index(self, index):
if self.model is not None:
raise SearchError("You can not add an index to the model")
_indexes = self._indexes[:]
for x in self._parse_indexes(index):
if x not in _indexes:
_indexes.append(x)
return self._clone(_indexes=_indexes)
def remove_index(self, index):
if self.model is not None:
raise SearchError("You can not remove an index from model")
_indexes = self._indexes[:]
for x in self._parse_indexes(index):
if x in _indexes:
_indexes.pop(_indexes.index(x))
return self._clone(_indexes=_indexes)
# Querying
def query(self, query):
return self._clone(_query=force_unicode(query))
def filter(self, **kwargs):
filters = self._filters.copy()
return self._clone(_filters=self._process_filters(filters, False, **kwargs))
def exclude(self, **kwargs):
filters = self._excludes.copy()
return self._clone(_excludes=self._process_filters(filters, True, **kwargs))
def fields(self, *args, **kwargs):
fields = ""
aliases = {}
if args:
fields = "`%s`" % "`, `".join(args)
if kwargs:
for k, v in kwargs.iteritems():
aliases[k] = "%s AS `%s`" % (v, k)
if fields or aliases:
return self._clone(_fields=fields, _aliases=aliases)
return self
def values_list(self):
return self._clone(_values_list=True)
def options(self, **kwargs):
if not kwargs:
return self
return self._clone(_query_opts=self._format_options(**kwargs))
def snippets(self, snippets=True, **kwargs):
if snippets == self._snippets and not kwargs:
return self
for k, v in kwargs.iteritems():
if isinstance(v, bool):
v = int(v)
return self._clone(_snippets_opts=kwargs, _snippets=snippets, _snippets_opts_string=None)
# Currently only supports grouping by a single column.
# The column however can be a computed expression
def group_by(self, field):
return self._clone(_group_by="GROUP BY `%s`" % field)
def order_by(self, *args):
sort_by = []
for arg in args:
order = "ASC"
if arg[0] == "-":
order = "DESC"
arg = arg[1:]
if arg == "pk":
arg = "id"
sort_by.append("`%s` %s" % (arg, order))
if sort_by:
return self._clone(_order_by="ORDER BY %s" % ", ".join(sort_by))
return self
def reverse(self):
"""
Reverses the ordering of the QuerySet.
"""
if self._order_by:
return self._clone(
_order_by=self._order_by.replace(" ASC", "_ASC").replace(" DESC", " ASC").replace("_ASC", " DESC")
)
return self
def group_order_by(self, *args):
sort_by = []
for arg in args:
order = "ASC"
if arg[0] == "-":
order = "DESC"
arg = arg[1:]
if arg == "pk":
arg = "id"
sort_by.append("`%s` %s" % (arg, order))
if sort_by:
return self._clone(_group_order_by="WITHIN GROUP ORDER BY %s" % ", ".join(sort_by))
return self
def count(self):
return min(self.total_found(), self._maxmatches)
def total_found(self):
return int(self.meta.get("total_found", 0))
# Возвращяет все объекты из индекса. Размер списка ограничен только
# значением maxmatches
def all(self):
return self._clone(_limit=self._maxmatches, _offset=None)
def none(self):
qs = EmptySphinxQuerySet()
qs.__dict__.update(self.__dict__.copy())
return qs
def reset(self):
return self.__class__(self.model, self.using, index=self._get_index())
def _get_values_for_update(self, obj):
fields = self._get_index_fields()
values = []
for field in fields[:]:
if field == "id":
f = getattr(obj, "pk")
f = self._encode_document_id(f)
else:
f = getattr(obj, field)
if hasattr(f, "through"): # ManyToMany
# пропускаем пока что...
f = [force_unicode(x.pk) for x in f.all()]
elif isinstance(f, six.string_types):
pass
elif isinstance(f, six.integer_types) or isinstance(f, (bool, date, datetime, float, decimal.Decimal)):
f = to_sphinx(f)
else:
model_filed = obj._meta.get_field(field)
if isinstance(model_filed, RelatedField):
f = to_sphinx(getattr(obj, model_filed.column))
else:
raise SearchError("Unknown field `%s`" % type(f))
values.append(f)
return values
def create(self, *args, **kwargs):
values = ()
if self.model:
assert len(args) == 1, "Model RT-index can be updated by object instance or queryset"
obj = args[0]
if isinstance(obj, self.model):
# один объект, один документ
values = (self._get_values_for_update(obj),)
elif isinstance(obj, QuerySet):
# несколько объектов, несколько документов
values = map(self._get_values_for_update, obj)
else:
raise SearchError("Can`t `%s` not an instance/queryset of `%s`" % (obj, self.model))
else:
raise NotImplementedError("Non-model RT-index update not supported yet")
if not values:
raise SearchError("Empty QuerySet? o_O")
query = ["REPLACE" if kwargs.pop("force_update", False) else "INSERT"]
query.append("INTO %s" % self.realtime)
query.append("(%s)" % ",".join(self._get_index_fields()))
query.append("VALUES")
query_args = []
q = []
for v in values:
f_list = []
for f in v:
if isinstance(f, six.string_types):
query_args.append(f)
f_list.append("%s")
elif isinstance(f, (list, tuple)):
f_list.append("(%s)" % ",".join(f))
else:
f_list.append(force_unicode(f))
q.append("(%s)" % ",".join(f_list))
query.append(", ".join(q))
cursor = conn_handler.cursor()
count = cursor.execute(" ".join(query), query_args)
return count
def update(self, **kwargs):
raise NotImplementedError("Update not implemented yet")
def delete(self):
"""
Удаляет из индекса документы, удовлетворяющие условиям filter
"""
assert self._can_modify(), "Cannot use 'limit' or 'offset' with delete."
q = ["DELETE FROM %s WHERE" % self.realtime]
if len(self._doc_ids) == 1:
where = "id = %i" % self._doc_ids[0]
else:
where = "id IN (%s)" % ",".join(str(id) for id in self._doc_ids)
q.append(where)
query = " ".join(q)
cursor = conn_handler.cursor()
cursor.execute(query, self._query_args)
# misc
def keywords(self, text, index=None, hits=None):
"""\
Возвращает генератор со списком ключевых слов
для переданного текста\
"""
if index is None:
# пока только для одного индекса
index = self._indexes[0]
query = "CALL KEYWORDS (%s)"
q = ["%s", "%s"]
if hits is not None and hits:
q.append("1")
query = query % ", ".join(q)
cursor = conn_handler.cursor()
count = cursor.execute(query, [text, index])
for x in range(0, count):
yield cursor.fetchone()
def get_query_set(self, model):
qs = model._default_manager
if self.using is not None:
qs = qs.db_manager(self.using)
return qs.all()
# Properties
def _meta(self):
if self._metadata is None:
self._init_data()
return self._metadata
meta = property(_meta)
def _get_snippets_string(self):
if self._snippets_string is None:
opts_list = []
for k, v in self._snippets_opts.iteritems():
opt = ("'%s' AS %s" if isinstance(v, six.string_types) else "%s AS %s") % (v, k)
opts_list.append(opt)
if opts_list:
self._snippets_string = ", %s" % ", ".join(opts_list)
return self._snippets_string or ""
# internal
def _set_limits(self, start, stop=None):
if start is not None:
self._offset = int(start)
else:
start = 0
if stop is not None:
self._limit = stop - start
def _can_modify(self):
if self.realtime is None:
raise SearchError("Documents can`t be modified on the non-realtime index")
assert (
self._doc_ids is not None
and not self._excludes
and self._query is None
and len(self._filters) == 1
and "id" in self._filters
), "Only {id = value | id IN (val1 [, val2 [, ...]])} filters allowed here"
return self._offset is None
def _init_data(self):
if not self._indexes:
# warnings.warn('Index list is not set. Using all known indices.')
self._indexes = self._parse_indexes(all_indexes())
# print self.query_string
self._iter = SphinxQuery(self.query_string, self._query_args)
self._metadata = self._iter.meta
def _get_data(self):
self._init_data()
self._result_cache = []
self._fill_cache()
## Options
def _parse_indexes(self, index):
if index is None:
return list()
return [x.lower() for x in re.split(self.__index_match, index) if x]
def _get_index(self):
return " ".join(self._indexes)
def _format_options_dict(self, d):
return "(%s)" % ", ".join(["%s=%s" % (x, d[x]) for x in d])
def _format_options(self, **kwargs):
if not kwargs:
return ""
opts = []
for k, v in kwargs.iteritems():
if isinstance(v, bool):
v = int(v)
elif isinstance(v, dict):
v = self._format_options_dict(v)
opts.append("%s=%s" % (k, v))
return "OPTION %s" % ",".join(opts)
## Cache
def results_raw(self):
"""
Returns raw id of results
"""
fields = self.meta["fields"].copy()
id_pos = fields.pop("id")
ct = None
results_id = []
if self._iter:
try:
while True:
doc = self._iter.next()
doc_id = doc[id_pos]
obj_id, ct = self._decode_document_id(int(doc_id))
results_id.append(obj_id)
except StopIteration:
pass
return results_id
def _fill_cache(self, num=None):
fields = self.meta["fields"].copy()
id_pos = fields.pop("id")
ct = None
results = {}
docs = OrderedDict()
if self._iter:
try:
while True:
doc = self._iter.next()
doc_id = doc[id_pos]
obj_id, ct = self._decode_document_id(int(doc_id))
results.setdefault(ct, {})[obj_id] = {}
docs.setdefault(doc_id, {})["results"] = results[ct][obj_id]
docs[doc_id]["data"] = {}
for field in fields:
docs[doc_id]["data"].setdefault("fields", {})[field] = doc[fields[field]]
except StopIteration:
self._iter = None
if not docs:
self._result_cache = []
return
if self._values_list:
if fields:
for doc_id in docs:
results[ct][doc_id]["obj"] = {"id": doc_id}
results[ct][doc_id]["obj"].update(docs[doc_id]["data"]["fields"])
else:
for doc_id in docs:
results[ct][doc_id]["obj"] = {"id": doc_id}
else:
if self.model is None and len(self._indexes) == 1 and ct is not None:
self.model = ContentType.objects.get(pk=ct).model_class()
if self.model:
qs = self.get_query_set(self.model)
qs = qs.filter(pk__in=results[ct].keys())
for obj in qs:
results[ct][obj.pk]["obj"] = obj
else:
for ct in results:
model_class = ContentType.objects.get(pk=ct).model_class()
qs = self.get_query_set(model_class).filter(pk__in=results[ct].keys())
for obj in qs:
results[ct][obj.pk]["obj"] = obj
# clear missing items
for pk in [pk for pk, doc in docs.items() if not "obj" in doc["results"]]:
del docs[pk]
if self._snippets:
for doc in docs.values():
doc["data"]["snippets"] = self._get_snippets(doc["results"]["obj"])
self._result_cache.append(SphinxProxy(doc["results"]["obj"], doc["data"]))
else:
for doc in docs.values():
self._result_cache.append(SphinxProxy(doc["results"]["obj"], doc["data"]))
## Snippets
def _get_snippets(self, instance):
(fields, docs) = zip(
*[(f, getattr(instance, f)) for f in self._get_doc_fields(instance) if getattr(instance, f)]
)
opts = self._get_snippets_string()
doc_format = ", ".join("%s" for x in range(0, len(fields)))
query = "CALL SNIPPETS (({0:>s}), '{1:>s}', %s {2:>s})".format(doc_format, instance.__sphinx_indexes__[0], opts)
docs += (self._query or "",)
c = conn_handler.cursor()
c.execute(query, docs)
snippets = {}
for field in fields:
snippets[field] = c.fetchone()[0].decode("utf-8")
return snippets
def _get_doc_fields(self, instance):
cache = self._doc_fields_cache.get(type(instance), None)
if cache is None:
def _get_field(name):
return instance._meta.get_field(name)
opts = instance.__sphinx_options__
included = opts.get("included_fields", [])
excluded = opts.get("excluded_fields", [])
stored_attrs = opts.get("stored_attributes", [])
stored_fields = opts.get("stored_fields", [])
if included:
included = [
f
for f in included
if f not in excluded and get_sphinx_attr_type_for_field(_get_field(f)) == "string"
]
for f in stored_fields:
if get_sphinx_attr_type_for_field(_get_field(f)) == "string":
included.append(f)
else:
included = [
f.name
for f in instance._meta.fields
if f.name not in excluded
and (f.name not in stored_attrs or f.name in stored_fields)
and get_sphinx_attr_type_for_field(f) == "string"
]
cache = self._doc_fields_cache[type(instance)] = included
return cache
def _get_index_fields(self):
if self._index_fields_cache is None:
opts = self.model.__sphinx_options__
excluded = opts.get("excluded_fields", [])
fields = []
for f in ["included_fields", "stored_attributes", "stored_fields", "related_fields", "mva_fields"]:
fields.extend(opts.get(f, []))
for f in excluded:
if f in fields:
fields.pop(fields.index(f))
fields.insert(0, "id")
self._index_fields_cache = fields
return self._index_fields_cache
## Documents
def _decode_document_id(self, doc_id):
"""\
Декодирует ID документа, полученного от Sphinx
:param doc_id: ID документа
:type doc_id: long
:returns: tuple(ContentTypeID, ObjectID)
:rtype: tuple\
"""
assert isinstance(doc_id, six.integer_types)
ct = (doc_id & CONTENT_TYPE_MASK) >> DOCUMENT_ID_SHIFT
return (doc_id & OBJECT_ID_MASK, ct)
def _encode_document_id(self, id):
if self.model:
ct = ContentType.objects.get_for_model(self.model)
id = int(ct.id) << DOCUMENT_ID_SHIFT | id
return id
## Filters
def _process_single_obj_operation(self, obj):
if isinstance(obj, models.Model):
if self.model is None:
raise ValueError("For non model or multiple model indexes comparsion with objects not supported")
value = obj.pk
elif not isinstance(obj, (list, tuple, QuerySet)):
value = obj
else:
raise TypeError("Comparison operations require a single object, not a `%s`" % type(obj))
return to_sphinx(value)
def _process_obj_list_operation(self, obj_list):
if isinstance(obj_list, (models.Model, QuerySet)):
if self.model is None:
raise ValueError("For non model or multiple model indexes comparsion with objects not supported")
if isinstance(obj_list, models.Model):
values = [obj_list.pk]
else:
values = [obj.pk for obj in obj_list]
elif hasattr(obj_list, "__iter__") or isinstance(obj_list, (list, tuple)):
values = list(obj_list)
elif isinstance(obj_list, (int, float, date, datetime)):
values = [obj_list]
else:
raise ValueError("`%s` is not a list of objects and not single object" % type(obj_list))
return map(to_sphinx, values)
def _process_filters(self, filters, exclude=False, **kwargs):
for k, v in kwargs.iteritems():
if len(k.split("__")) > 3:
raise NotImplementedError("Related model fields lookup not supported")
parts = k.rsplit("__", 1)
parts_len = len(parts)
field = parts[0]
lookup = parts[-1]
if field == "pk": # приводим pk к id
field = "id"
if parts_len == 1: # один
if field == "id":
v = self._encode_document_id(self._process_single_obj_operation(v))
self._doc_ids = [v]
else:
v = self._process_single_obj_operation(v)
filters[field] = "%s %s %s" % (field, "!=" if exclude else "=", v)
elif parts_len == 2: # один exact или список, или сравнение
if lookup == "in":
if field == "id":
v = map(self._encode_document_id, self._process_obj_list_operation(v))
self._doc_ids = v
else:
v = self._process_obj_list_operation(v)
filters[field] = "%s %sIN (%s)" % (field, "NOT " if exclude else "", ",".join(str(x) for x in v))
elif lookup == "range":
v = self._process_obj_list_operation(v)
if len(v) != 2:
raise ValueError("Range may consist of two values")
if exclude:
# not supported by sphinx. raises error!
warnings.warn("Exclude range not supported by SphinxQL now!")
filters[field] = "NOT %s BETWEEN %i AND %i" % (field, v[0], v[1])
else:
filters[field] = "%s BETWEEN %i AND %i" % (field, v[0], v[1])
elif lookup in FILTER_CMP_OPERATIONS:
filters[field] = "%s %s %s" % (
field,
FILTER_CMP_INVERSE[lookup] if exclude else FILTER_CMP_OPERATIONS[lookup],
self._process_single_obj_operation(v),
)
else: # stored related field
filters[k] = "%s %s %s" % (k, "!=" if exclude else "=", self._process_single_obj_operation(v))
return filters
## Query
def _build_query(self):
self._query_args = []
q = ["SELECT"]
q.extend(self._build_fields())
q.extend(["FROM", ", ".join(self._indexes)])
q.extend(self._build_where())
q.append(self._build_group_by())
q.append(self._build_order_by())
q.append(self._build_group_order_by())
q.extend(self._build_limits())
if self._query_opts is not None:
q.append(self._query_opts)
return " ".join(q)
query_string = property(_build_query)
def _build_fields(self):
q = []
if self._fields:
q.append(self._fields)
if self._aliases:
q.append(",")
if self._aliases:
q.append(", ".join(self._aliases.values()))
return q
def _build_where(self):
q = []
if self._query or self._filters or self._excludes:
q.append("WHERE")
if self._query:
q.append("MATCH(%s)")
self._query_args.append(self._query)
if self._filters or self._excludes:
q.append("AND")
if self._filters:
q.append(" AND ".join(self._filters.values()))
if self._excludes:
q.append("AND")
if self._excludes:
q.append(" AND ".join(self._excludes.values()))
return q
def _build_group_by(self):
return self._group_by
def _build_order_by(self):
return self._order_by
def _build_group_order_by(self):
return self._group_order_by
def _build_limits(self):
if not self._limit is None and self._offset is None:
return ""
q = ["LIMIT"]
if self._offset is not None:
q.append("%i," % self._offset)
q.append("%i" % (self._limit if self._limit is not None else self._maxmatches))
return q
## Clone
def _clone(self, **kwargs):
"""\
Clones the queryset passing any changed args\
"""
c = self.__class__()
c.__dict__.update(self.__dict__.copy())
c._result_cache = None
c._metadata = None
c._iter = None
for k, v in kwargs.iteritems():
setattr(c, k, v)
return c
