def execute_transaction(self, transaction):
updates = OrderedDict()
inserts = OrderedDict()
for command in transaction.commands:
model = command.args
table_name = model._meta.table_name
data, action = self.model_data(model, command.action)
group = inserts if action == Command.INSERT else updates
if table_name not in group:
group[table_name] = [], []
group[table_name][0].append(data)
group[table_name][1].append(model)
#
for table, docs_models in inserts.items():
term = ast.Table(table).insert(docs_models[0])
executed = yield from self.execute(term)
errors = []
for key, model in zip(executed['generated_keys'], docs_models[1]):
model['id'] = key
model[REV_KEY] = key
model._modified.clear()
#
for table, docs_models in updates.items():
for data, model in zip(docs_models[0], docs_models[1]):
data[REV_KEY] = model[REV_KEY]
model._modified.clear()
term = ast.Table(table).update(docs_models[0])
yield from self.execute(term)
def _build_term(self, aggregated):
table = ast.Table(self._meta.table_name)
if aggregated:
assert len(aggregated) == 1, 'Cannot filter on multiple lookups'
name, lookups = list(aggregated.items())[0]
values = None
row = ast.ImplicitVar()
for lookup in lookups:
if lookup.type == 'value':
v = row[name] == lookup.value
else:
raise NotImplementedError
if values is None:
values = v
else:
values = values & v
field = self._meta.dfields.get(name)
if field and field.index:
raise NotImplementedError
else:
term = table.filter(values)
else:
term = table
return term
def table(*arguments, **kwargs):
"""
Return all documents in a table. Other commands may be chained after table
to return a subset of documents (such as get and filter) or perform further
processing.
"""
return ast.Table(*arguments, **kwargs)
def update(cls, data, **kwargs):
if getattr(cls, 'schema', None):
cls.validate(data, partial=True)
return ast.Table(cls._table).update(data,
data=data,
table=cls._table,
return_changes=True,
**kwargs)
def insert(cls, data, raw=False, validate=True, **kwargs):
if validate and getattr(cls, 'schema', None):
if isinstance(data, list):
cls.validate(data, many=True)
else:
cls.validate(data)
res = ast.Table(cls._table).insert(data,
raw=raw,
data=data,
table=cls._table,
return_changes=True,
**kwargs)
return res
def merge(cls, *args, **kwargs):
return ast.Table(cls._table).merge(*args, **kwargs)
def table_index_all(self, table_name, **kw):
return self.execute(ast.Table(table_name).index_list(), **kw)
def table_index_drop(self, table_name, index, **kw):
return self.execute(ast.Table(table_name).index_drop(index), **kw)
def get_model(self, manager, pk):
table_name = manager._meta.table_name
data = yield from self.execute(ast.Table(table_name).get(pk))
if not data:
raise self.ModelNotFound
return self._model_from_db(manager, **data)
def changes(cls, *args, **kwargs):
return ast.Table(cls._table).changes(*args, **kwargs)
def prepend(cls, *args):
return ast.Table(cls._table).prepend(*args)
def append(cls, *args):
return ast.Table(cls._table).append(*args)
def all(cls):
return ast.Table(cls._table, table=cls._table)
def count(cls, *args):
return ast.Table(cls._table).count(*args)
def delete(cls, **kwargs):
return ast.Table(cls._table).delete(table=cls._table,
return_changes=True,
**kwargs)
def filter(cls, *args, **kwargs):
return ast.Table(cls._table).filter(*args, **kwargs)
def get(cls, *args):
return ast.Table(cls._table).get(*args, table=cls._table)
