def write(self, vals):
""" Write values to the documents in the current set"""
# Perform write access check
check_access(self._name, "write", self.env.context["uid"])
raw_data = self.validate(vals, True)
# Create two separate dictionaries for handling base and x2many fields
base_dict = dict()
x2m_dict = dict()
# Map provided values to their dictionaries
for field_name, value in raw_data.items():
if isinstance(self._fields[field_name], Many2many) or \
isinstance(self._fields[field_name], One2many):
x2m_dict[field_name] = value
else:
base_dict[field_name] = value
# Load base_dict into write cache
self.env.cache.append("write", self._name, self.ids(), base_dict)
# Load x2many field data into write cache
for field_name, value in x2m_dict.items():
setattr(self, field_name, value)
self.env.cache.flush()
return
def browse(self, ids):
""" Given a list of ObjectIds or strs representing
an ObjectId, return a document set with the
corresponding elements.
"""
items = []
if isinstance(ids, ObjectId):
# Handle singleton browse (OId)
items.append(ids)
elif isinstance(ids, str):
# Handle singleton browse (str)
items.append(ObjectId(ids))
elif isinstance(ids, list):
# Iterate over list of OId's
for oid in ids:
if isinstance(oid, ObjectId):
items.append(oid)
elif isinstance(oid, str):
items.append(ObjectId(oid))
else:
raise TypeError("Expected str or ObjectId, "
"got {} instead".format(
oid.__class__.__name__))
else:
raise TypeError("Expected list, str or ObjectId, "
"got {} instead".format(ids.__class__.__name__))
# Create a new docset out of the requested OIDs
docset_instance = self.__class__(self.env, {"_id": {"$in": items}})
# Make sure the user has read access
check_access(docset_instance, "read")
return docset_instance
def search(self, query):
""" Return a new set of documents """
# Check read access, but skip DLS check.
# We perform the DLS check right here because
# we want no exceptions to be raised in case
# access is denied, but to restrict the domain
# of the search.
check_access(self, "read", skip_DLS=True)
# Create a list of groups this user belongs to
uid = self.env.context["uid"]
user_group_rels = conn.db["base.user.group.rel"].find(
{"user_oid": uid})
groups = [rel["group_oid"] for rel in user_group_rels]
# Build DLS query (Document Level Security)
dls_query = build_DLS_query(self._name, "read", groups, uid,
self.env.session)
if dls_query:
# Constraint the provided query by intersecting it with the DLS query.
new_query = {"$and": [query, dls_query]}
else:
# No DLS query
new_query = query
# Perform the requested query
cursor = conn.db[self._name].find(new_query, session=self.env.session)
ids = [item["_id"] for item in cursor]
return self.__class__(self.env, {"_id": {"$in": ids}})
def create(self, vals_list):
# Perform create access check
check_access(self._name, "create", self.env.context["uid"])
# Convert vals to list if a dict was provided
if isinstance(vals_list, dict):
vals_list = [vals_list]
# For collecting inserted ids
ids = list()
docs = list()
for vals in vals_list:
# Make sure x2many assignment does not contain
# any forbidden operation.
for field, value in vals.items():
if field in self._fields and (
isinstance(self._fields[field], One2many)
or isinstance(self._fields[field], Many2many)):
for item in value:
if item[0] in ["write", "purge", "remove", "clear"]:
raise ValueError(
"Cannot use x2many operation '{}' on create()".
format(item[0]))
# Validate and Flush, return new DocSet
raw_data = self.validate(vals)
# Create two separate dictionaries for handling base and x2many fields
base_dict = dict()
x2m_dict = dict()
# Map provided values to their dictionaries
for field_name, value in raw_data.items():
if isinstance(self._fields[field_name], Many2many) or \
isinstance(self._fields[field_name], One2many):
x2m_dict[field_name] = value
else:
base_dict[field_name] = value
# Append to buffer lists
ids.append(base_dict["_id"])
docs.append(base_dict)
# Load base_dict into write cache & flush caché
if len(docs) == 1:
docs = docs[0]
self.env.cache.append("create", self._name, None, docs)
self.env.cache.flush()
doc = self.__class__(self.env, {"_id": {"$in": ids}})
# Load x2many field data into write cache
for field_name, value in x2m_dict.items():
setattr(doc, field_name, value)
return doc
def unlink(self):
""" Deletes all the documents in the set.
Return the amount of deleted elements.
"""
# Perform unlink access check
check_access(self, "unlink")
ids = self.ids
if self._name in registry.__deletion_constraints__:
for constraint in registry.__deletion_constraints__[self._name]:
mod, fld, cons = constraint
if cons == "RESTRICT":
related = self.sudo().env[mod].search({fld: {"$in": ids}})
if related.count() > 0:
raise DeletionConstraintError(
"There are one or more records referencing "
"the current set. Deletion aborted.")
elif cons == "CASCADE":
related = self.env[mod].search({fld: {"$in": ids}})
if related.count() > 0:
related.unlink()
elif cons == "SET NULL":
intrm = getattr(self.env[mod], "_intermediate", False)
related = self.sudo().env[mod].search({fld: {"$in": ids}})
if related.count() > 0:
if not intrm:
related.write({fld: None})
else:
# If the model we're working with is intermediate,
# we've got to delete the relation instead,
# in order to avoid a NOT NULL constraint error
# and keep the collection clean.
if related.count() > 0:
related.unlink()
else:
raise ValueError(
"Invalid deletion constraint '{}'".format(cons))
# Delete documents
outcome = conn.db[self._name].delete_many(self._query,
session=self.env.session)
# Delete any base.model.data documents
# referencing any of the deleted documents
conn.db["base.model.data"].delete_many({
"model": self._name,
"res_id": {
"$in": ids
}
})
return outcome.deleted_count
def get(self, external_id):
""" Finds a single document by its external id """
mod_data = conn.db["base.model.data"].find_one(
{
"model": self._name,
"name": external_id
},
session=self.env.session)
if not mod_data:
return None
# Create a singleton docset
docset_instance = self.__class__(self.env, {"_id": mod_data["res_id"]})
# Make sure the user has read access
check_access(docset_instance, "read")
return docset_instance
def unlink(self):
""" Deletes all the documents in the set.
Return the amount of deleted elements.
"""
# Perform unlink access check
check_access(self._name, "unlink", self.env.context["uid"])
ids = self.ids()
if self._name in registry.__deletion_constraints__:
for constraint in registry.__deletion_constraints__[self._name]:
mod, fld, cons = constraint
related = self.env[mod].search({fld: {"$in": ids}})
if cons == "RESTRICT":
if related.count() > 0:
raise DeletionConstraintError(
"There are one or more records referencing "
"the current set. Deletion aborted.")
elif cons == "CASCADE":
if related.count() > 0:
related.unlink()
elif cons == "SET NULL":
if related.count() > 0:
related.write({fld: None})
else:
raise ValueError(
"Invalid deletion constraint '{}'".format(cons))
# Delete documents
outcome = conn.db[self._name].delete_many(self._query,
session=self.env.session)
# Delete any base.model.data documents
# referencing any of the deleted documents
conn.db["base.model.data"].delete_many({
"model": self._name,
"res_id": {
"$in": ids
}
})
return outcome.deleted_count
def read(self, fields=[]):
""" Returns a list of dictionaries representing
each document in the set. The optional parameter fields
allows to specify which field values should be retrieved from
database. If omitted, all fields will be read. This method also
renders the representation of relational fields (Many2one and x2many).
"""
# Perform read access check
check_access(self._name, "read", self.env.context["uid"])
if len(fields) == 0:
fields = self._fields.keys()
cache = dict()
# By calling the list constructor on a PyMongo cursor we retrieve all the records
# in a single call. This is faster but may take lots of memory.
data = list(conn.db[self._name].find(self._query,
{field: 1
for field in fields},
session=self.env.session))
for field in fields:
if issubclass(self._fields[field].__class__, RelationalField):
# Create a caché dict with the representation
# value of each related document in the dataset
represent = self._fields[field]._represent
if isinstance(self._fields[field], Many2one):
# Many2one Prefetch
related_ids = [
item[field] for item in data if item[field] is not None
]
rels = list(
conn.db[self._fields[field]._comodel_name].find(
{"_id": {
"$in": related_ids
}}, {represent: 1},
session=self.env.session))
related_docs = {
rel["_id"]: (rel["_id"], rel[represent])
for rel in rels
}
elif isinstance(self._fields[field], One2many):
# One2many Prefetch
inversed_by = self._fields[field]._inversed_by
related_ids = [item["_id"] for item in data]
# Retrieve all the records in the co-model for the current
# field that are related to any of the oids in the dataset
rels = list(
conn.db[self._fields[field]._comodel_name].find(
{inversed_by: {
"$in": related_ids
}}, {
represent: 1,
inversed_by: 1
},
session=self.env.session))
# Build dictionary with the model record oid as key
# and a list of tuples with its co-model relations as value.
related_docs = dict()
for rel in rels:
if rel[inversed_by] not in related_docs:
related_docs[rel[inversed_by]] = list()
related_docs[rel[inversed_by]].append(
(rel["_id"], rel[represent]))
elif isinstance(self._fields[field], Many2many):
# Many2many Prefetch
related_ids = [item["_id"] for item in data]
rel_model_name = self._fields[field]._relation
field_a = self._fields[field]._field_a
field_b = self._fields[field]._field_b
rels_int = list(conn.db[rel_model_name].find(
{field_a: {
"$in": related_ids
}},
session=self.env.session))
rels_rep = list(
conn.db[self._fields[field]._comodel_name].find(
{
"_id": {
"$in": [rel[field_b] for rel in rels_int]
}
}, {represent: 1},
session=self.env.session))
rels_rep_dict = {
rel["_id"]: rel[represent]
for rel in rels_rep
}
rels_dict = dict()
for rel in rels_int:
if rel[field_a] not in rels_dict:
rels_dict[rel[field_a]] = list()
rels_dict[rel[field_a]].append(rel[field_b])
related_docs = dict()
for oid, rels in rels_dict.items():
if oid not in related_docs:
related_docs[oid] = list()
for rel in rels:
related_docs[oid].append((rel, rels_rep_dict[rel]))
# Add relations to the caché dictionary
cache[field] = related_docs
result = list()
# Iterate over data
for dictitem in data:
doc = dict()
for field in fields:
field_inst = self._fields[field]
if field_inst._exclude:
continue
if issubclass(field_inst.__class__, RelationalField):
if isinstance(field_inst, Many2one):
# Get Many2one representation from caché
value = dictitem.get(field, None)
doc[field] = cache[field].get(value, None)
elif isinstance(field_inst, One2many) or isinstance(
field_inst, Many2many):
# Get x2many representation from caché
doc[field] = cache[field].get(dictitem["_id"], list())
else:
doc[field] = dictitem[field] if field in dictitem else None
result.append(doc)
return result
