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From "Andreas Pieber (JIRA)" <j...@apache.org>
Subject [jira] Created: (KARAF-368) Add "conflicts" configuration into features.xml
Date Mon, 10 Jan 2011 16:36:46 GMT
Add "conflicts" configuration into features.xml
-----------------------------------------------

                 Key: KARAF-368
                 URL: https://issues.apache.org/jira/browse/KARAF-368
             Project: Karaf
          Issue Type: New Feature
            Reporter: Andreas Pieber


I'm coding at pax-wicket right now and find the following "problem": 

In the following features.xml...

{code}
  <!-- Departmentstore example suite provided with paxwicket -->
  <feature name="departmentstore" version="0.6.0-SNAPSHOT">
    <feature version="0.6.0-SNAPSHOT">web</feature>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore/departmentstore-model/0.6.0-SNAPSHOT</bundle>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore.view/departmentstore-view-about/0.6.0-SNAPSHOT</bundle>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore.view/departmentstore-view-application/0.6.0-SNAPSHOT</bundle>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore.view/departmentstore-view-floor/0.6.0-SNAPSHOT</bundle>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore.view/departmentstore-view-franchisee/0.6.0-SNAPSHOT</bundle>
  </feature>
  <feature name="departmentstore-basic" version="0.6.0-SNAPSHOT">
    <feature version="0.6.0-SNAPSHOT">web</feature>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore/departmentstore-service-basic/0.6.0-SNAPSHOT</bundle>
  </feature>
  <feature name="departmentstore-alternative" version="0.6.0-SNAPSHOT">
    <feature version="0.6.0-SNAPSHOT">web</feature>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore/departmentstore-service-alternative/0.6.0-SNAPSHOT</bundle>
  </feature>
{code}

... I have the problem that both, departmentstore-basic and departmentstore-alternative depend
on web AND departmentstore; but they "conflict" with each other. I know that we can't detect
such a situation automatically BUT it would be cool to do something like the following

{code}
  <feature name="departmentstore-basic" version="0.6.0-SNAPSHOT">
    <feature version="0.6.0-SNAPSHOT">web</feature>
    <feature version="0.6.0-SNAPSHOT" conflicts=true>departmentstore-alternative</feature>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore/departmentstore-service-basic/0.6.0-SNAPSHOT</bundle>
  </feature>
  <feature name="departmentstore-alternative" version="0.6.0-SNAPSHOT">
    <feature version="0.6.0-SNAPSHOT">web</feature>
    <feature version="0.6.0-SNAPSHOT" conflicts=true>departmentstore-basic</feature>
    <bundle>mvn:org.ops4j.pax.wicket.samples.departmentstore/departmentstore-service-alternative/0.6.0-SNAPSHOT</bundle>
  </feature>
{code}

If I have departmentstore-basic install now and I do a...

{code}
feature:install departmentstore-alternative
{code}

...something like the following should happen automatically...

{code}
features:uninstall departmentstore-basic
features:install departmentstore-alternative
{code}

For one feature this is maybe trivial but think you 20 departmentstore implementations. This
will require you to look up which is currently installed, uninstall it and then install the
new one...

WDYT?

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