So I tried again from a clean eclipse ganymede installation with the
last dev build m2eclipse plugin.
And even if I set an external installation (in eclipse preferences :
Maven|Installation|Add...) I still get the error.
I get the error when I import the project (or when I "Update Project
Configuration") into the eclipse workspace
the erros happens when the goal [eclipse:m2eclipse] is executing during
the importation process or during the "Update Project Configuration"
process.
I tried to manually run the goal [eclipse:m2eclipse] on the project
using the external Maven runtime and it worked.
Then I tried to run the same goal using with the embedded Maven runtime,
and this time I get the same exception (linkage error) but with a
stacktrace:
Exception in thread "main" java.lang.LinkageError: loader constraints
violated when linking org/codehaus/plexus/util/xml/XMLWriter class at
org.apache.maven.plugin.eclipse.writers.wtp.EclipseWtpApplicationXMLWriter.writePrettyXmlFile(EclipseWtpApplicationXMLWriter.java:624)
So the import Maven proces or the Update Project Configuration process
seems to not use the external Maven runtime
I created the Jira issue : http://jira.codehaus.org/browse/MNGECLIPSE-745
Igor Fedorenko a écrit :
When using external maven runtime, m2eclipse is only supposed to use
classes from that maven installation. Can you please confirm that you
changes your launch configuration to use external maven 2.0.x runtime?
If this does not help, please open JIRA with sample project and steps to
reproduce the problem and I will have a look.
Also, you may want to add your vote to MNGECLIPSE-688, this will help us
properly prioritize direct support for EAR projects in m2e/wtp integration.
Yann wrote:
No, I think the issue is in m2eclipse not in maven because I don't
have any problem when I run in commande line.
And moreover I get the error from the m2eclipse console in eclipse.
I think the error could be that m2eclipse use more recent classes (for
instances maven embedder 2.1...) that are not compatible with some
classes of the eclipse plugin.
The fact to use wtpapplicationxml to true means the eclipse:m2eclipse
goal uses the XMLWriter class (in order to generate the
application.xml file) and this could explains why I get the error
"loader constraints violated when linking
org/codehaus/plexus/util/xml/XMLWriter class"...
what do you think ?
Igor Fedorenko a écrit :
This mailing list is really about m2eclipse project
(http://m2eclipse.codehaus.org/). Your problem appears to be with
maven-eclipse-plugin and I believe maven user-list is the place to
ask for help/advice with this maven plugin.
Yann wrote:
I tried either with the embedded maven runtime or the external maven
runtime and in both cases I get the same exception.
After doing some tests I found which maven option trigger this error:
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<configuration>
<wtpapplicationxml>true</wtpapplicationxml>
<wtpversion>1.5</wtpversion>
</configuration>
</plugin>
If I set wtpapplicationxml to false then I don't have any error...
Should I raise a Jira issue ?
Yann.
Igor Fedorenko a écrit :
You can try using external 2.0.x maven runtime, see [1] for more
details how to configure m2eclipse to use external maven runtimes
[1] http://docs.codehaus.org/display/M2ECLIPSE/Maven+Settings
Yann wrote:
Hi,
I tried to use m2eclipse on an EAR project.
When importing an EAR project as a maven project I get the
following exception:
15.07.08 19:40:07 CEST: [INFO] [eclipse:m2eclipse]
15.07.08 19:40:07 CEST: [INFO] Adding support for WTP version 1.5.
15.07.08 19:40:07 CEST: [INFO] Using source status cache:
C:\soft\dev\eclipse\ganymede\target\mvn-eclipse-cache.properties
15.07.08 19:40:08 CEST: [INFO] Using as WTP server : null
15.07.08 19:40:08 CEST: [FATAL ERROR]
org.apache.maven.plugin.eclipse.M2EclipseMojo#execute() caused a
linkage error (java.lang.LinkageError). Check the realms:
NOTE:
Plugin realm is:
/plugins/org.apache.maven.plugins:maven-eclipse-plugin:[EMAIL PROTECTED]/thread:Worker-39
Container realm is: plexus.core
Realm ID:
/plugins/org.apache.maven.plugins:maven-eclipse-plugin:[EMAIL PROTECTED]/thread:Worker-39
urls[0] =
file:/c:/soft/javalib/maven2/local-repository/org/apache/maven/plugins/maven-eclipse-plugin/2.5.1/maven-eclipse-plugin-2.5.1.jar
urls[1] =
file:/c:/soft/javalib/maven2/local-repository/org/codehaus/plexus/plexus-archiver/1.0-alpha-7/plexus-archiver-1.0-alpha-7.jar
urls[2] =
file:/c:/soft/javalib/maven2/local-repository/org/codehaus/plexus/plexus-utils/1.4.5/plexus-utils-1.4.5.jar
urls[3] =
file:/c:/soft/javalib/maven2/local-repository/junit/junit/3.8.1/junit-3.8.1.jar
urls[4] =
file:/c:/soft/javalib/maven2/local-repository/org/apache/maven/maven-plugin-registry/2.0.8/maven-plugin-registry-2.0.8.jar
urls[5] =
file:/c:/soft/javalib/maven2/local-repository/org/codehaus/plexus/plexus-interactivity-jline/1.0-alpha-5/plexus-interactivity-jline-1.0-alpha-5.jar
urls[6] =
file:/c:/soft/javalib/maven2/local-repository/jline/jline/0.9.1/jline-0.9.1.jar
urls[7] =
file:/c:/soft/javalib/maven2/local-repository/org/apache/maven/maven-archiver/2.2/maven-archiver-2.2.jar
urls[8] =
file:/c:/soft/javalib/maven2/local-repository/org/codehaus/plexus/plexus-resources/1.0-alpha-4/plexus-resources-1.0-alpha-4.jar
urls[9] =
file:/c:/soft/javalib/maven2/local-repository/biz/aQute/bndlib/0.0.145/bndlib-0.0.145.jar
urls[10] =
file:/c:/soft/javalib/maven2/local-repository/org/apache/maven/shared/maven-osgi/0.2.0/maven-osgi-0.2.0.jar
urls[11] =
file:/c:/soft/javalib/maven2/local-repository/org/eclipse/core/resources/3.3.0-v20070604/resources-3.3.0-v20070604.jar
Realm ID: plexus.core
loader constraints violated when linking
org/codehaus/plexus/util/xml/XMLWriter class
The side effect of this exception is once the error happens all
others projects importing in the same time fail.
Do you have an idea on how to avoid this exception ?
Thanks
Yann.
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
