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Added the order options parsing function

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This commit is contained in:
Roland Haroutiounian 2016-04-15 09:47:22 +02:00
commit 801f2f0679
2 changed files with 18 additions and 5 deletions
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16
lodel/datasource/mongodb/datasource.py
View file

@ -56,17 +56,26 @@ class MongoDbDataSource(object):
return (connection_args['login'], urllib.quote_plus(connection_args['password']), connection_args['host'],
connection_args['port'], connection_args['dbname'])
## @brief returns a selection of documents from the datasource
# @param target_cls Emclass
# @param field_list list
# @param filters list : List of filters
# @param rel_filters list : List of relational filters
# @param order list : List of column to order. ex: order = [('title', 'ASC'),]
# @param group list : List of tupple representing the column to group together. ex: group = [('title', 'ASC'),]
# @param limit int : Number of records to be returned
# @param offset int: used with limit to choose the start record
# @param instanciate bool : If true, the records are returned as instances, else they are returned as dict
# @return list
# @todo Implement the grouping
# @todo Implement the relations
def select(self, target_cls, field_list, filters, rel_filters=None, order=None, group=None, limit=None, offset=0,
instanciate=True):
collection_name = utils.object_collection_name(target_cls.__class__)
collection = self.database[collection_name]
query_filters = utils.parse_query_filters(filters)
query_result_ordering = utils.parse_query_order(order) if order is not None else None
results_field_list = None if len(field_list) == 0 else field_list # TODO On peut peut-être utiliser None dans les arguments au lieu d'une liste vide
results_field_list = None if len(field_list) == 0 else field_list
limit = limit if limit is not None else 0
cursor = collection.find(
filter=query_filters,
@ -95,8 +104,9 @@ class MongoDbDataSource(object):
result = collection.delete_many(uid)
return result.deleted_count
## @brief updates one or a list of records
# @todo to be implemented
def update(self, target_cls, uid, **datas):
pass
## @brief Inserts a record in a given collection

7
lodel/datasource/mongodb/utils.py
View file

@ -7,7 +7,6 @@ collection_prefix = {
'collection': 'class_'
}
# TODO Ajouter ici les conversions vers les opérateurs MongoDB correspondants
LODEL_OPERATORS_MAP = {
'=': {'name': '$eq', 'value_type': None},
'<=': {'name': '$lte', 'value_type': None},
@ -70,6 +69,7 @@ def convert_filter_list(filters_list):
converted_filters_list.append({key: convert_filter_list(query_item[1])})
return converted_filters_list
## @brief converts a Lodel query filter into a MongoDB filter
# @param filter tuple : (FIELD, OPERATOR, VALUE) representing the query filter to convert
# @return dict : {KEY: {OPERATOR:VALUE}}
@ -81,10 +81,13 @@ def convert_filter(filter):
converted_filter = {key: {converted_operator: value}}
return converted_filter
## @brief Returns a list of sorting options
# @param query_filters_order list
# @return list
# @todo To be implemented
def parse_query_order(query_filters_order):
ordering = list()
for query_filter_order in query_filters_order:
field, direction = query_filter_order
ordering.append((field, LODEL_SORT_OPERATORS_MAP[direction]))
return ordering