Never a Wrong (Semantic) Version Again! - Ferry Huberts

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mfrancis

OSGi Community Event 2013 (http://www.osgi.org/CommunityEvent2013/Schedule) ABSTRACT

Technologie Business

Never A Wrong
(Semantic) Version Again!
bndtools

About Me
●

Ferry Huberts M.Sc.

●

Open Source Entrepreneur (pelagic.nl)

●

Member of the bnd / bndtools team

●

Contributor in several other projects
–

Like olsrd, cgit
2/14

Meaning of Semantic
se·man·tic
adjective si-ˈman-tik
Origin of SEMANTIC
Greek sēmantikos significant, from sēmainein
to signify, mean, from sēma sign, token

* From http://www.merriam-webster.com/dictionary.

3/14

Meaning of Version
ver·sion
noun ˈvər-zhən, -shən
Origin of VERSION
Middle French, from Medieval Latin version-,
versio act of turning, change, from Latin
vertere to turn — more at worth

* From http://www.merriam-webster.com/dictionary.

4/14

Meaning of Semantic Version

A Semantic Version
is
A change with (strict) meaning
5/14

Semantic Versioning Schemes
●

OSGi
http://www.osgi.org/wiki/uploads/Links/SemanticVersioning.pdf

●

SemVer.org
http://semver.org/

●

Eclipse
http://wiki.eclipse.org/Version_Numbering

6/14

Semantic Versioning
●

OSGi
http://www.osgi.org/wiki/uploads/Links/SemanticVersioning.pdf

7/14

Premise

Semantic Versions
are all about
(Backward) Compatibility
8/14

Semantic Version

Major.Minor.Micro.Qualifier*
●

Major: incompatible change for providers
and consumers

●

Minor: incompatible change for providers

●

Micro: compatible change

●

Qualifier: anything (e.g. build identity)
* Major, Minor and Micro are numbers, Qualifier is a string
9/14

API

Coherent set
of
exported classes

10/14

Hands-On

bndtools
The easy, powerful and productive way to develop with OSGi.
Based on bnd and Eclipse.
11/14

Rocket Example
API

Provider
rocket.control

rocket.control.api

rocket.control.api.
RocketControlListener

rocket.blackbox

Consumer

bndtools

12/14

Summary
●

Semantic Versions:
–

Theory:
●

–

Reality:
●
●

–

conceptually easy
not so easy
easy to forget to update the multiple places

There are some subtleties

●

bndtools can handle* it for you

●

Never Stop Thinking
13/14

* except for semantic changes not detectable by a machine, like kph to mph renames

Contact
bndtools:

http://bndtools.org/
https://github.com/bndtools/bndtools
mailto:bndtools-users@googlegroups.com

bnd:

http://www.aqute.biz/Bnd/Bnd
https://github.com/bndtools/bnd
mailto:bndtools-users@googlegroups.com

Ferry Huberts <ferry.huberts@pelagic.nl>

14/14

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Never a Wrong (Semantic) Version Again! - Ferry Huberts

1. Never A Wrong (Semantic) Version Again! bndtools

2. About Me ● Ferry Huberts M.Sc. ● Open Source Entrepreneur (pelagic.nl) ● Member of the bnd / bndtools team ● Contributor in several other projects – Like olsrd, cgit 2/14

3. Meaning of Semantic se·man·tic adjective si-ˈman-tik Origin of SEMANTIC Greek sēmantikos significant, from sēmainein to signify, mean, from sēma sign, token * From http://www.merriam-webster.com/dictionary. 3/14

4. Meaning of Version ver·sion noun ˈvər-zhən, -shən Origin of VERSION Middle French, from Medieval Latin version-, versio act of turning, change, from Latin vertere to turn — more at worth * From http://www.merriam-webster.com/dictionary. 4/14

5. Meaning of Semantic Version A Semantic Version is A change with (strict) meaning 5/14

6. Semantic Versioning Schemes ● OSGi http://www.osgi.org/wiki/uploads/Links/SemanticVersioning.pdf ● SemVer.org http://semver.org/ ● Eclipse http://wiki.eclipse.org/Version_Numbering 6/14

7. Semantic Versioning ● OSGi http://www.osgi.org/wiki/uploads/Links/SemanticVersioning.pdf 7/14

8. Premise Semantic Versions are all about (Backward) Compatibility 8/14

9. Semantic Version Major.Minor.Micro.Qualifier* ● Major: incompatible change for providers and consumers ● Minor: incompatible change for providers ● Micro: compatible change ● Qualifier: anything (e.g. build identity) * Major, Minor and Micro are numbers, Qualifier is a string 9/14

10. API Coherent set of exported classes 10/14

11. Hands-On bndtools The easy, powerful and productive way to develop with OSGi. Based on bnd and Eclipse. 11/14

12. Rocket Example API Provider rocket.control rocket.control.api rocket.control.api. RocketControlListener rocket.blackbox Consumer bndtools 12/14

13. Summary ● Semantic Versions: – Theory: ● – Reality: ● ● – conceptually easy not so easy easy to forget to update the multiple places There are some subtleties ● bndtools can handle* it for you ● Never Stop Thinking 13/14 * except for semantic changes not detectable by a machine, like kph to mph renames

14. Contact bndtools: http://bndtools.org/ https://github.com/bndtools/bndtools mailto:bndtools-users@googlegroups.com bnd: http://www.aqute.biz/Bnd/Bnd https://github.com/bndtools/bnd mailto:bndtools-users@googlegroups.com Ferry Huberts <ferry.huberts@pelagic.nl> 14/14

Never a Wrong (Semantic) Version Again! - Ferry Huberts

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Never a Wrong (Semantic) Version Again! - Ferry Huberts