diff options
Diffstat (limited to 'db/dbcommands.cpp')
| -rw-r--r-- | db/dbcommands.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/db/dbcommands.cpp b/db/dbcommands.cpp index f7e39afc2d4..57bc170d0f8 100644 --- a/db/dbcommands.cpp +++ b/db/dbcommands.cpp @@ -1111,7 +1111,7 @@ namespace mongo { GroupCommand() : Command("group"){} virtual bool slaveOk() { return true; } virtual void help( stringstream &help ) const { - help << "example: TODO"; + help << "see http://www.mongodb.org/display/DOCS/Aggregation"; } BSONObj getKey( const BSONObj& obj , const BSONObj& keyPattern , const string keyFunction , double avgSize ){ @@ -1182,6 +1182,7 @@ namespace mongo { bool run(const char *dbname, BSONObj& jsobj, string& errmsg, BSONObjBuilder& result, bool fromRepl ){ static DBDirectClient db; + /* db.$cmd.findOne( { group : <p> } ) */ const BSONObj& p = jsobj.firstElement().embeddedObjectUserCheck(); BSONObj q; @@ -1213,7 +1214,10 @@ namespace mongo { else if ( p["$keyf"].type() ){ keyf = p["$keyf"].ascode(); } - + else { + errmsg = "parameter 'key' is missing or not an object"; + return false; + } return group( realdbname , cursor , key , keyf , p["$reduce"].ascode() , p["initial"].embeddedObjectUserCheck() , errmsg , result ); } |