Thanks, Pascal.

feature.xml defines another IU, think I am in case when IU fully defined in
p2.inf as

units.1.id=com.mountainminds.eclemma.core
units.1.properties.0.name=org.eclipse.equinox.p2.name
units.1.properties.0.value=This version cannot...

I was just surprised that it doesn't appear in Help -> About Eclipse ->
Installation Details, but found where it appears:

[image: Inline image 1]


Thanks again.



On Sat, Oct 29, 2016 at 7:59 PM, Pascal Rapicault <[email protected]>
wrote:

> The units.*.properties.* entries are published into the IU and serve for a
> number of things like the plug-in name, the plugin provider etc. Unless you
> define your IU entirely in p2.inf (which I don't think is the case for
> you), you usually get those for free from the manifest.mf, feature.xml and
> others.
>
> Here is an example of the properties for the com.ibm.icu IU
>
>         <property name='df_LT.pluginName' value='International Components
> for Unicode for Java (ICU4J)'/>
>         <property name='df_LT.providerName' value='IBM Corporation'/>
>         <property name='org.eclipse.equinox.p2.name' value='%pluginName'/>
>         <property name='org.eclipse.equinox.p2.provider'
> value='%providerName'/>
>         <property name='org.eclipse.equinox.p2.bundle.localization'
> value='plugin'/>
>
> HTH
>
> Pascal
>
>
> On 10/29/2016 12:31 PM, Evgeny Mandrikov wrote:
>
> Seems that I made a stupid copy-paste mistake - m2e-wtp has osgi bundle
> "org.eclipse.m2e.wtp", but in our case should be 
> "com.mountainminds.eclemma.core"
> instead of "com.mountainminds.eclemma":
>
> requires.0.name=com.mountainminds.eclemma.core
> units.1.id=com.mountainminds.eclemma.core
> units.1.provides.0.name=com.mountainminds.eclemma.core
>
> So excuse me for a noise - all seems to work fine after this fix.
>
> Still interested in explanation of values for "units.1.properties.0.name"
> and "units.1.properties.0.value" since can't manage to see them in UI,
> but this is minor.
>
> Thanks.
>
>
> On Sat, Oct 29, 2016 at 3:27 PM, Evgeny Mandrikov <[email protected]>
> wrote:
>
>> Hi P2 experts,
>>
>> We are preparing initial release of EclEmma <
>> https://projects.eclipse.org/projects/technology.eclemma> under Eclipse
>> Foundation umbrella.
>> And we would like to provide for our users smooth transition from its
>> ancestor <https://github.com/jacoco/eclemma>.
>>
>> So as was advised by our mentor Mickael Istria - based on <
>> https://github.com/eclipse/m2e.wtp/blob/master/org.eclipse.
>> m2e.wtp.feature/p2.inf> I've tried to create p2.inf
>> Here is its content with comments describing my assumptions:
>>
>> ###
>>
>> # can update any "com.mountainminds.eclemma.feature" and previous
>> versions of "org.eclipse.eclemma.feature"
>> update.matchExp = providedCapabilities.exists(pc | pc.namespace \=\=
>> 'org.eclipse.equinox.p2.iu' && (pc.name \=\=
>> 'com.mountainminds.eclemma.feature.feature.group' || pc.name \=\= 'org
>> .eclipse.eclemma.feature.feature.group' && pc.version < '$version$'))
>>
>> # requires additional IU described below
>> requires.0.namespace=osgi.bundle
>> requires.0.name=com.mountainminds.eclemma
>> requires.0.range=[$version$, $version$]
>>
>> units.1.id=com.mountainminds.eclemma
>> units.1.version=$version$
>> units.1.singleton=true
>> units.1.provides.0.namespace=osgi.bundle
>> units.1.provides.0.name=com.mountainminds.eclemma
>> units.1.provides.0.version=$version$
>>
>> # to not overwrite the main artifact, the additional IU should have
>> classifier (https://bugs.eclipse.org/bugs/show_bug.cgi?id=430728)
>> units.1.properties.1.name=maven-classifier
>> units.1.properties.1.value=p2inf
>>
>> # TODO explain
>> units.1.properties.0.name=org.eclipse.equinox.p2.name
>> units.1.properties.0.value=This version cannot be installed on top of
>> the already installed EclEmma plugin. Uninstall the previous version and
>> try the install again.
>>
>> ###
>>
>> And below is a description of performed testing with undesirable outcome.
>>
>> Using:
>>  fresh installation of Eclipse IDE for Java Developers (Version: Neon.1a
>> Release (4.6.1) Build id: 20161007-1200)
>> Given:
>>  old 2.3.3.201602231923 installed from <http://update.eclemma.org/>
>> When:
>>  installing new one from local build directory
>> Then:
>>  correctly upgraded to 2.3.4.201610291259
>> When:
>>  new build is available and checking for update
>> Then:
>>  correctly upgraded to more newer 2.3.4.201610291310
>> When:
>>  installing old one from <http://update.eclemma.org/>
>> Expected:
>>  failure
>> Actual:
>>  both (2.3.3.201602231923 and 2.3.4.201610291310) are installed
>>
>> Any help/ideas are more than welcome.
>>
>> Regards,
>> Evgeny
>>
>>
>>
>
>
> --
> Best regards,
> Evgeny Mandrikov aka Godin <http://godin.net.ru>
> http://twitter.com/_godin_
>
>
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-- 
Best regards,
Evgeny Mandrikov aka Godin <http://godin.net.ru>
http://twitter.com/_godin_
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