Release Notes

5.5.31

• Added delete stream data API (TickStream::deleteData methods);
• Supported selection from multiple stream spaces (SelectionOptions::withSpaces method).

5.5.31+glibc2.17

• Added delete stream data API (TickStream::deleteData methods);

5.5.30

• Linux arm64 platform support.

5.5.25+glibc2.17

• Special tag for legacy environments with glibc 2.17. Only for Python 3.6.

5.5.23

• Topic publisher support.
• Fixed pandas_utils.read_frame instrument type fetching.

5.5.20

• Fixed pandas utils create stream from data frame.

5.5.19

• Extended session client log.

5.5.18

• Added support for TimeBase separate web port.
• Added loader buffer size configuration options.

5.5.16

• Added calculate hash (SHA-256) method for C++ Schema::TickDbClassDescriptor::calcHash (useful for schema integrity check).

5.5.12

• Added support for publishing to conan repository.

5.5.10

• Added compatibility with TimeBase server 5.6 nanotime version.

5.5.9

• Fixed nextIfAvailable hangs on server disconnect.

5.5.8

• Python 3.12 support.

5.5.6

• Fixed while reading fields with DECIMAL(X) encoding.

5.5.5

• Added GIL releasing during cursor read and loader send.

5.5.4

• Fixed write None at the end of text fields.

5.5.3

• Added pandas_utils submodule (utils for working with pandas.DataFrame).
• Fixed crash on repeated cursor assigning.
• Fixed none_dealloc on get stream location.

5.5.0

• Added cluster support.
• Select from stream spaces support.
• Integration Conan 2.0 package manager in addition to CMake 3.23. Upgrade 3rd-party libraries.
  • OpenSSL 1.1.1j -> 1.1.1u
  • TinyXML2 1.0.12 -> 9.0.0
  • Catch2 1.9.4 -> 2.13.10
• Python 3.6, 3.7 support removed.
• Centos 7 support removed.

5.4.31

• API updates:
  • Added support for CE like API which accepts entities (symbols) as strings.
• Fixes:
  • Fixed NULL value for DECIMAL64 type.
  • Removed typeId from message, returned by cursor.getMessage().
  • Fixed TickLoader with SSL.
  • Added support for default port in URL.

5.4.30

• Added INSERT WriteMode.
• Fixed InstrumentType constructor: dxapi.InstrumentIdentity(dxapi.InstrumentType('FX'), 'BTCBUSD') works now.

5.4.29

• Fixed Wrong type of field 'timestamp'. Required: INTEGER. bug.
• Added setters and getters methods for InstrumentMessage: setTimestamp(long|float), setDateTime(datetime), datetime getDateTime(), setNanoTime(long|float), long getNanoTime().

5.4.28

• SSL: fixed ssl termination flow.
• Added db.setApplicationName() support.
• Ranged locks support.
• Working with stream schema support:
  • Introduced classes SchemaDef, TypeDef, FieldDef and DataTypeDef.
  • Introduced methods stream.changeSchema() and db.generateSchema().

5.4.27

• Artifacts optimization: dxapi python wheel common artifact was splitted into many artifacts for each platform.

5.4.26

• MacOS arm64 additional rpath'es added. Possibly can solve dxapi.so import problems.

5.4.25

• MacOS arm64 platform support (for Python v3.8, 3.9, 3.10, 3.11).
• Python 3.11 support.

5.4.20

• Added stream locks support (TickStream::lock method).
• Fixed time of day data type codec.
• Fixed float codecs (#21).
• Writing of null values into non-nullable fields was prohibited.
• version field was added to StreamOptions.

5.4.19

• Fixed null terminated varchars.

5.4.18+centos

• Added support for centos7 version for Python 3.9. Install with command pip install dxapi==5.4.18+centos --extra-index-url https://<user>:<password>@nexus.deltixhub.com/repository/epm-rtc-public-python/simple.

5.4.14

• Fixed message length check for empty messages.

5.4.13

• Fixed issue: db.listStreams() returns empty array when we have at least 1 stream with empty name.
• Fixed dxapi.stream_to_dict() method.
• Added setup.py script to installer. Now dxapi can be installed with pip from local directory (useful for QuantServer installer users, for example, pip install /path/to/QuantServer/python).
• Minor autodoc fixes.

5.4.12

• Fixed cursor.next() hang forever when connection is down.

5.4.11

• Python 2.7 support deprecated.
• Generator migrated from swig version 3 to 4.
• All API wrappers was refactored to increase usability:
  • Added type hints
  • Added documentation strings
  • Added @contextmanager versions of create methods: openFromUrl, tryCursor, trySelect, tryLoader, tryExecuteQuery
• Added auto generated md documentation.

5.4.10

• Added support for 32-bit Entity ID, allowing to work with streams containing more than 65,536 instruments.

5.4.9

• Added support for python 3.9, 3.10.

5.4.4

• Support SSL connection.

5.4.0

• Added spaces API:
  • Write message into space;
  • TickStream::listSpaces, TickStream::renameSpace, TickStream::deleteSpaces.