3.00.0

New Features

• Added support for compilation of C++ API with gcc/g++ 13 version.
• Added support for obtaining offset of messages.

Improvements

• Removed unnecessary warnings when compiling on Linux.
• Removed “using namespace” declaration in DolphinDB.h.
• Optimized the performance when subscribing to heterogeneous stream tables.

Issues Fixed

• Fixed the issue where the length parameter of the append function did not take effect when appending a tuple to array vectors.
• Fixed incorrect results returned by FastArrayVector::fill after variables were modified.
• Fixed incorrect results returned by ArrayVector::fill value is tuple or array vector.

New Features

• Added parameters backupSites to enable failover mechanism for subscribe.
• Added method setStreamTableTimestamp to attach a timestamp column to a stream table to record the data ingestion time.
• Added class EventSender and EventClient to write events into a heterogeneous stream table and subscribe events from a heterogeneous stream table.

Issues Fixed

• Fixed a segmentation fault that occurred when downloading a dictionary containing data of UUID/INT128/IPADDR type with DBConnection.run.
• Fixed an issue where the API would become unresponsive when uploading empty SYMBOL vectors with interfaces AutoFitTableAppender and AutoFitTableUpsert.
• Fixed precision loss occurred when parsing the DECIMAL column from a heterogeneous table.