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Re: [equinox-dev] Exporting packages without a version

This is a common misconception. There is no connection between bundle version and exported package versions. A bundle that imports using Import-Package will only care about the exported package versions, and a bundle that requires using Require-Bundle will only care about the Bundle-Version.

Since Import-Package is the correct way to consume dependencies, itâs a significant problem that so many Eclipse bundles fail to version their packages.

Neil


> On 11 Dec 2014, at 14:08, Dennis HÃbner <dennis.huebner@xxxxxxxxx> wrote:
> 
> Hi equinox-dev team,
> 
> I have a question regarding exporting an unversioned package.
> If I look over the bundles in eclipse, the most of them (expect of some orbit bundles) exports packages without a version.
> We do it likewise e.g.:
> 
> Manifest-Version: 1.0
> Bundle-ManifestVersion: 2
> Bundle-Name: Xbase Runtime Library
> Bundle-SymbolicName: org.eclipse.xtext.xbase.lib
> Bundle-Version: 2.8.0.qualifier
> Bundle-RequiredExecutionEnvironment: J2SE-1.5
> Export-Package: org.eclipse.xtend2.lib,
> org.eclipse.xtext.xbase.lib,
> org.eclipse.xtext.xbase.lib.internal;x-internal:=true,
> org.eclipse.xtext.xbase.lib.util
> 
> In an osqi container I see that this packages are exported with 0.0.0 it doesnât care what the bundle-version is:
> osgi>  b 584
> org.eclipse.xtext.xbase.lib_2.7.3.v201411190455 [584]
>  Id=584, Status=RESOLVED    Data Root=/Users/dhuebner/Entwicklung/xtext-new/eclipse/configuration/org.eclipse.osgi/584/data
>  "No registered services."
>  No services in use.
>  Exported packages
>    org.eclipse.xtend2.lib; version="0.0.0"[exported]
>    org.eclipse.xtext.xbase.lib; version="0.0.0"[exported]
>    org.eclipse.xtext.xbase.lib.internal; version="0.0.0"[exported]
>    org.eclipse.xtext.xbase.lib.util; version="0.0.0"[exported]
>  Imported packages
>    com.google.common.annotations; version="15.0.0" <com.google.guava_15.0.0.v201403281430 [4]>
>    co
> 
> osgi>  b 626
> org.eclipse.xtext.xbase.lib_2.8.0.v201411111037 [626]
>  Id=626, Status=RESOLVED    Data Root=/Users/dhuebner/Entwicklung/xtext-new/eclipse/configuration/org.eclipse.osgi/626/data
>  "No registered services."
>  No services in use.
>  Exported packages
>    org.eclipse.xtend2.lib; version="0.0.0"[exported]
>    org.eclipse.xtext.xbase.lib; version="0.0.0"[exported]
>    org.eclipse.xtext.xbase.lib.internal; version="0.0.0"[exported]
>    org.eclipse.xtext.xbase.lib.util; version="0.0.0"[exported]
>  Imported packages
>    com.google.common.annotations; version="15.0.0" <com.google.guava_15.0.0.v201403281430 [4]>
>    com.goo
> 
> I thought, that if my bundle exports a package without a version, it means, that the version is the same as a Bundle-Version. But from what I see in the osgi console it seems that Iâm wrong.
> 
> osgi> b org.eclipse.xtend.lib
> org.eclipse.xtend.lib_2.8.0.v201411111037 [544]
>  Id=544, Status=RESOLVED    Data Root=/Users/dhuebner/Entwicklung/xtext-new/eclipse/configuration/org.eclipse.osgi/544/data
>  "No registered services."
>  No services in use.
>  Exported packages
>    org.eclipse.xtend.lib; version="0.0.0"[exported]
>    org.eclipse.xtend.lib.annotations; version="0.0.0"[exported]
>  Imported packages
>    com.google.common.annotations; version="15.0.0" <com.google.guava_15.0.0.v201403281430 [4]>
> ...
>    org.eclipse.xtext.xbase.lib; version="0.0.0" <org.eclipse.xtext.xbase.lib_2.8.0.v201411111037 [626]>
>    org.eclipse.xtext.xbase.lib; version="0.0.0" <org.eclipse.xtext.xbase.lib_2.7.3.v201411190455 [584]>
>    org.eclipse.xtext.xbase.lib.internal; version="0.0.0" <org.eclipse.xtext.xbase.lib_2.8.0.v201411111037 [626]>
>    org.eclipse.xtext.xbase.lib.internal; version="0.0.0" <org.eclipse.xtext.xbase.lib_2.7.3.v201411190455 [584]>
>    org.eclipse.xtext.xbase.lib.util; version="0.0.0" <org.eclipse.xtext.xbase.lib_2.8.0.v201411111037 [626]>
>    org.eclipse.xtext.xbase.lib.util; version="0.0.0" <org.eclipse.xtext.xbase.lib_2.7.3.v201411190455 [584]>
>  No fragment bundles
>  Required bundles
>    osgi.identity; osgi.identity="org.eclipse.xtext.xbase.lib"; type="osgi.bundle"; version:Version="2.8.0.v201411111037"
>    osgi.identity; osgi.identity="org.eclipse.xtend.lib.macro"; type="osgi.bundle"; version:Version="2.8.0.v201411111037"
> 
> My question is, which package will be wired if an another bundle require (using Require-Bundle) an xbase.lib bundle with version constraint 2.8.0?
> 
> 
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