Hello Dirk,
There are always options for doing this, although they may not be
considered elegant.
To solve your problem in a practical way I would recommend defining
two
profiles within your pom (say "neo4jV2" and "neo4jV3").
One of the properties should be included ("Conditional profiles")
using the
value (or existence/non-existence) of a command-line property
(typically
something like -Dneo4jVersion=2).
The neo4jv2 profile includes the three neo4j2 dependencies, and the
neo4jv3
profile includes the two neo4j3 dependencies.
Include the neo4jV3 profile unless the property "neo4jVersion" is set
on
the command line.
Done.
2017-04-12 21:50 GMT+02:00 Dirk Mahler <[email protected]>:
> Hi Stephen,
>
> I need to declare the dependency to static directly, so I'm on the
> Sorry-Out-Of-Luck path...
>
> But your suggestion makes me thinking of providing an artifact
myself
> (just pom packaging) in two different versions that pulls in the
different
> dependencies and which can be overridden by the user. This should
be
> possible then, right?
>
> In that case I have to think about how to organize my own builds
because I
> assume that within one reactor I won't be able to build two modules
with
> same groupId and artifactId but different versions.
>
> Cheers,
>
> Dirk
>
> PS: Thanks for the 3.5.0 release, works like a charm for me!
>
> Am Mittwoch 12. April 2017 schrieb Stephen Connolly:
> > On Wed 12 Apr 2017 at 20:21, Dirk Mahler
<[email protected]>
> wrote:
> >
> > > Hi Bindul,
> > >
> > > sadly it's not that easy (or it's so easy that I don't see the
> > > solution...). As a default and for compatibility reasons I'd
like to
> > > declare the dependencies of the Neo4j 2.x artifacts for my
Maven
> plugin:
> > >
> > > - org.neo4j:neoj
> > > - org.neo4j.app:neo4j-server
> > > - org.neo4j.app:neo4j-server:static *
> >
> >
> > Do you declare a direct dependency on static or a transitive one?
> >
> > If direct, then yes you are Sorry-out-of-Luck
> >
> > If transitive, then the <dependency> in the user's <plugin> will
override
> > the neo4j-server and you are sorted as the newer version will not
pull in
> > the static stuff
> >
> > >
> > >
> > > For a user it would be possible to override only the first two
> > > dependencies with the Neo4j 3.x versions: the third artifact
(*) does
> > > not exist for Neo4j 3.x (the Neo guys merged the static content
into
> > > neo4j-server.jar, i.e. into the main artifact without
classifier). In
> > > this case I would need to exclude
"org.neo4j.app:neo4j-server:static"
> > > which is still there as a 2.x artifact and pulls in some other
deps
> that
> > > are conflicting with the 3.x stuff. Any idea?
> > >
> > > Cheers,
> > >
> > > Dirk
> > >
> > > ------ Originalnachricht ------
> > > Von: "Bindul Bhowmik" <[email protected]>
> > > An: "Maven Developers List" <[email protected]>; "Dirk
Mahler"
> > > <[email protected]>
> > > Gesendet: 12.04.2017 20:28:16
> > > Betreff: Re: Configurable Dependencies for Maven Plugins?
> > >
> > > >Dirk,
> > > >
> > > >On Wed, Apr 12, 2017 at 7:06 AM, Dirk Mahler
> > > ><[email protected]> wrote:
> > > >> Hi all,
> > > >>
> > > >> is there a way to provide users of a plugin a way of easily
> switching
> > > >> dependencies of it?
> > > >>
> > > >> Background: I'm developing a Maven plugin (jQAssistant)
that comes
> > > >>with a
> > > >> dependency to Neo4j (graph database). Currently I'm using
Neo4j
> 2.3.x
> > > >>which
> > > >> has been compiled against Java 7 but I would like to offer
users of
> > > >>the
> > > >> Maven plugin an easy option to use the newer Neo4j 3.x
releases
> which
> > > >>offer
> > > >> some new features but require Java 8.
> > > >>
> > > >> I know that it's possible to overwrite an existing
dependency for a
> > > >>plugin,
> > > >> e.g.
> > > >>
> > > >> <plugin>
> > > >> <groupId>com.buschmais.jqassistant</groupId>
> > > >> <artifactId>jqassistant-maven-plugin</artifactId>
> > > >> <version>1.3.0</version>
> > > >> <dependencies>
> > > >> <dependency>
> > > >> <groupId>org.neo4j</groupId>
> > > >> <artifactId>neo4j</artifactId>
> > > >> <version>3.1.3</version> <!-- instead of the default
2.3.10
> -->
> > > >> </dependency>
> > > >> </dependencies>
> > > >> </plugin>
> > > >
> > > >As long as your code can handle the different versions of the
> > > >dependency, I think this is absolutely doable. In fact the
Maven
> > > >Checkstyle Plugin uses the same approach to allow upgrading
checkstyle
> > > >versions without upgrading the plugin version [1].
> > > >
> > > >>
> > > >> The problem is that in my case the old version comes with
another
> set
> > > >>of
> > > >> dependencies than the new one:
> > > >
> > > >I do not think this will be a problem.
> > > >
> > > >>
> > > >> old:
> > > >>
> > > >> <dependencies>
> > > >> <dependency>
> > > >> <groupId>org.neo4j</groupId>
> > > >> <artifactId>neo4j</artifactId>
> > > >> <version>2.3.10</version>
> > > >> </dependency>
> > > >> <dependency>
> > > >> <groupId>org.neo4j.app</groupId>
> > > >> <artifactId>neo4j-server</artifactId>
> > > >> <version>2.3.10</version>
> > > >> </dependency>
> > > >> <dependency>
> > > >> <groupId>org.neo4j.app</groupId>
> > > >> <artifactId>neo4j-server</artifactId>
> > > >> <classifier>static-web</classifier>
> > > >> <version>2.3.10</version>
> > > >> </dependency>
> > > >> </dependencies>
> > > >>
> > > >> new:
> > > >>
> > > >> <dependencies>
> > > >> <dependency>
> > > >> <groupId>org.neo4j</groupId>
> > > >> <artifactId>neo4j</artifactId>
> > > >> <version>3.1.3</version>
> > > >> </dependency>
> > > >> <dependency>
> > > >> <groupId>org.neo4j.app</groupId>
> > > >> <artifactId>neo4j-server</artifactId>
> > > >> <version>3.1.3</version>
> > > >> </dependency>
> > > >> </dependencies>
> > > >>
> > > >> Is there a good way to deal with it such that a user of the
> > > >> jqassistant-maven-plugin can easily switch between both
variants?
> > > >>
> > > >> Cheers,
> > > >>
> > > >> Dirk
> > > >>
> > > >> Senior Consultant IT
> > > >> buschmais GbR
> > > >
> > > >
> > > >- Bindul
> > > >
> > > >[1]
> > > >
> > > http://maven.apache.org/plugins/maven-checkstyle-
> plugin/examples/upgrading-checkstyle.html
> > > >
> > > >>
> > > >>
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> > > >> Adresse buschmais GbR, Leipziger Straße 93, 01127 Dresden
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--
--
+==============================+
| Bästa hälsningar,
| [sw. "Best regards"]
|
| Lennart Jörelid
| EAI Architect & Integrator
|
| jGuru Europe AB
| Mölnlycke - Kista
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| Email: [email protected]
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