|
Event Stream Intelligence: Esper & NEsper |
NEsper Change History
This section lists the changes between Esper releases. The changes introduced in each release are split into the following categories.
- API changes: Any changes to the API that may impact existing users.
- Major changes: Major new features.
- Minor changes: Smaller changes and bug fixes.
NEsper 3.4.0
Released July 27, 2010
API changes
- Enhancements release; Esper for .NET - feature equivalent to Esper 3.4.0 with the exception of IO adapters
NEsper 3.3.0
Released March 8, 2010
Major changes
- All changes for Esper 3.3
- MonitorLock, MonitorSpinLock
- Default timeout now uses BaseLock.MLockTimeout
- IDisposable instance is singleton reducing heap fragmentation.
- HighResolutionPerformanceProvider changed to use double instead of decimal for calculation. Faster performance with no notable degradation.
- Benchmark performance improved from 1.3 million EPS to 3.6 million EPS.
NEsper 3.2.1
Released Jan. 26, 2010
NEsper 3.0.0
Released August 3, 2009
API changes
- Esper for .NET - feature equivalent to Esper 3.0.0
- When migrating from NEsper 2.1 to NEsper 3.0, please follow Migrating Esper 2.x to Esper 3
- The Destroy() method has been changed to Dispose(). Of course this implies that the objects now implement IDisposable ... so if you have language bindings, now you can use them.
- The statement listeners have been augmented by true EventHandlers (delegates). So you don't need to implement an interface and you don't need to use proxies from previous versions.
Major changes
- Feature equivalent with Esper 3.0.0
- XML support is now a part of NEsper. Includes XML schema normalization and XPath.
- The strict Map requirement has been replaced with a general infrastructure for handling IDictionary - if you choose not to use that structure, but instead use IDictionary it will now do automatic translation under the covers for you.
- Full support for string indexing was added to NEsper (the Java version doesn't support this).
NEsper 1.12.0 Beta 1
Released February 16, 2008
NEsper 1.10.0 Beta 1
Released September 22, 2007
Major changes
- Refactoring effort in Esper between 1.3 and 1.4
- Refactoring effort in Esper between 1.4 and 1.10
- Addition of database support to NEsper via ADO.NET
- Addition of parameter style support do address quirks in the ADO.NET parameter model
- Addition of dynamic code generation to access properties and fields
- Conversion of ReaderWriterLock to FastReaderWriterLock -- implementation flaw in CLR
- Includes NEsperIO as a port of EsperIO 1.10.0
NEsper 1.3.0 Final
Released June 13, 2007
Major changes
- Conversion of Esper to the CLR.
- Most of the method names have had their canonization changed to reflect .NET coding conventions.
- Database support has been dropped in this release until we can address positional parameters in ADO.NET.
- Many of the interfaces used in Esper have been changed to delegates in NEsper.
About Esper and NEsper
NewsAbout Esper for Java
About NEsper for .NET
License and Trademark Use
Terms of Use
Tutorials and Case Studies
TutorialQuick Start
Articles and Presentations
Solution Patterns
Short Case Study
Longer Case Study
DEBS 2011 Challenge
Additional Examples
Technology Links
Esper for Java
DownloadChange History
Documentation
FAQ
Reporting Issues
Building
On Performance
NEsper for .NET
DownloadChange History
Documentation
FAQ
Reporting Issues
Building
The Esper/NEsper Team
How To ContributeMailing Lists/Forums
Roadmap
Source Repository
Last Published: Mar 04, 2013
Version: 4.9.0