def delete_taskversions(self, modifier_id, task_id=None, version_id=None, is_affected=None):
if task_id is None and version_id is None:
raise CoreError("the task_id and version_id can't be None at the same time.")
query = TaskVersion.all()
if task_id is not None:
query.filter("task_id =", task_id)
if version_id is not None:
query.filter("version_id =", version_id)
if is_affected != None:
query.filter("is_affected =", is_affected)
return query.delete(modifier_id)
def fetch_taskversions(self, task_id, is_affected):
query = TaskVersion.all()
query.filter("task_id =", task_id)
query.filter("is_affected =", is_affected)
return query.fetch()
def has_taskversion(self, task_id, version_id, is_affected):
query = TaskVersion.all()
query.filter("task_id =", task_id)
query.filter("version_id =", version_id)
query.filter("is_affected =", is_affected)
return query.count() > 0
def delete_taskversion(self, task_id, version_id, is_affected, modifier_id):
query = TaskVersion.all()
query.filter("task_id =", task_id)
query.filter("version_id =", version_id)
query.filter("is_affected =", is_affected)
return query.delete(modifier_id)