OpenWire (library)


OpenWire is an open-source dataflow programming library that extends the functionality of Embarcadero Delphi and C++ Builder by providing pin type component properties. The properties can be connected to each other. The connections can be used to deliver data or state information between the pins, simulating the functionality of LabVIEW, Agilent VEE and Simulink. OpenWire is available for Visual Component Library and FireMonkey.

History

The project started in 1997 as an attempt for visual design of text parsers. Later it was used for designing signal processing libraries, and was expanded to support any data type.

Pins

Pins form the connections between the components.
OpenWire defines 4 types of pins:
Pin lists can contain and group pins.
OpenWire defines 2 types of pin lists:
Two pins in OpenWire can connect and exchange data only if they support compatible data types. Each pin can support one or more data types. The data types are distinguished by GUID unique for each data type.

Format Converters

The latest version of OpenWire supports automatic data conversion. If two pins can't connect directly due to incompatible data types, a data format converter can be used automatically to convert the data between the pins. The developers can create and register format converters associated with different data types.

Multi-threading

OpenWire is designed as thread-safe and well suited for multi-threading VCL and FireMonkey component development.

Version history

The following is a rough outline of product release information.
DateVersionSignificant changes
August 31, 20011.2Official release.
September 4, 20011.3Small fixes.
November 21, 20011.4Minor changes.
February 16, 20021.5Improved multiple data type per pin support.
February 23, 20021.6Delphi 6.0 Support.
April 14, 20021.7C++ Builder 6.0 Support.
May 9, 20021.8Improved and cleanup release.
April 13, 20032.0Added StatePin and dispatchers support.
May 15, 20032.1Maintenance release.
August 27, 20032.2Maintenance release.
January 3, 20042.3Complex data type added.
December 2, 20042.4Added multithreading support. Delphi 2005 support.
June 22, 20052.5Improved Multithreading.
February 22, 20062.6Minor improvements.
January 4, 20073.0Added support for add on editors.
October 25, 20073.1Fixed loading from Frames.
March 14, 20094.0Added Format Converters. Added Lazarus support for Windows, and Linux.
September 23, 20094.3Added Delphi and C++ Builder 2010 support.
May 7, 20104.5Added TOWMultiSinkPins.
September 2, 20115.0Added Delphi and C++ Builder XE, XE2 and FireMonkey support. 64 bit compatible.
October 1, 20115.0.1Maintenance release.
October 11, 20125.0.3Added Delphi and C++ Builder XE3 support. Added initial MAC support.
June 12, 20136.0Added Delphi and C++ Builder XE4 support.
Dropped support for versions older than Delphi and C++ Builder XE2.
Dropped Lazarus support due to lack of language features.
April 13, 20147.0Added Delphi and C++ Builder XE5 and XE6 support.
Dropped support for versions older than Delphi and C++ Builder XE3.
Added Android support.
November 13, 20147.5Added Delphi and C++ Builder XE7 support.
Dropped support for versions older than Delphi and C++ Builder XE4.
Redesigned to use the new free Mitov.Runtime library which significantly reduces the code.

Future development

A graphical OpenWire editor is under development. The latest version of the editor is available from the .