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https://issues.jboss.org/browse/JBIDE-10196?page=com.atlassian.jira.plugi...
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Fred Bricon edited comment on JBIDE-10196 at 11/18/11 1:09 PM:
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Full conversion of existing Eclipse projects into Maven ones is not supported in m2e (it
barely creates a minimal pom.xml and enables the Maven nature and builder on the project).
Existing classpath folders and classpath entries are not taken into account in the
process. m2e only reads the pom.xml and infers a configuration based on the maven default
conventions at this point. By default, the maven-compiler-plugin is configured to target
Java 1.5, so m2e updates the project configuration to follow the pom.xml settings.
JBoss Tools introduces a somewhat better conversion mechanism to enhance the default m2e
behavior :
* Right-Click on your project > Properties
* Go to the Project facets page
* Check JBoss Maven Integration, follow the "further configuration required"
link
* fill in the maven project infos (choose packaging ejb)
* click ok and finish validate the changes
JBoss Tools will generate a pom.xml file having all the maven plugins configured according
to the existing Eclipse project configuration. BUT, there is an important limitation : the
classpath dependencies MUST be filled in manually in the pom. Previous existing Classpath
Libraries (runtime, EAR ...) or classpath entries (local jars) should ALWAYS be superceded
by the Maven Classpath Library. It's the one and only way to guarantee the project
will build via command line. Updating the Maven project configuration will most likely
remove them.
In your case, after the project is converted, you will have to add the Java EE API (or
the EJB API) dependency to your pom.xml, in order to compile your session bean.
However, if you're starting from scratch, the recommended way is to start creating a
Maven project, using existing archetypes. That way the created project will follow the
default maven conventions and won't requires heaps of xml configuration to follow the
Eclipse conventions.
Full Eclipse -> Maven configuration will probably not happen in the near future, as it
requires some changes in the m2e API.
was (Author: fbricon):
Full convertion of existing Eclipse projects into Maven ones is not supported in m2e
(it barely creates a minimal pom.xml and enables the Maven nature and builder on the
project). Existing classpath folders and classpath entries are not taken into account in
the process. m2e only reads the pom.xml and infers a configuration based on the maven
default conventions at this point. By default, the maven-compiler-plugin is configured to
target Java 1.5, so m2e updates the project configuration to follow the pom.xml settings.
JBoss Tools introduces a somewhat better conversion mechanism to enhance the default m2e
behavior :
* Right-Click on your project > Properties
* Go to the Project facets page
* Check JBoss Maven Integration, follow the "further configuration required"
link
* fill in the maven project infos (choose packaging ejb)
* click ok and finish validate the changes
JBoss Tools will generate a pom.xml file having all the maven plugins configured according
to the existing Eclipse project configuration. BUT, there is an important limitation : the
classpath dependencies MUST be filled in manually in the pom. Previous existing Classpath
Libraries (runtime, EAR ...) or classpath entries (local jars) should ALWAYS be superceded
by the Maven Classpath Library. It's the one and only way to guarantee the project
will build via command line. Updating the Maven project configuration will most likely
remove them.
In your case, after the project is converted, you will have to add the Java EE API (or
the EJB API) dependency to your pom.xml, in order to compile your session bean.
However, if you're starting from scratch, the recommended way is to start creating a
Maven project, using existing archetypes. That way the created project will follow the
default maven conventions and won't requires heaps of xml configuration to follow the
Eclipse conventions.
Full Eclipse -> Maven configuration will probably not happen in the near future, as it
requires some changes in the m2e API.
Java build paths break when converting project to maven
-------------------------------------------------------
Key: JBIDE-10196
URL:
https://issues.jboss.org/browse/JBIDE-10196
Project: Tools (JBoss Tools)
Issue Type: Bug
Components: maven, UpStream
Affects Versions: 3.3.0.M4
Environment: OSX Lion 10.7.2, JDK 1.6, Eclipse Java EE IDE for Web Developers,
JBoss Tools updated today (18th Nov) from
http://download.jboss.org/jbosstools/updates/development/indigo/
Reporter: Darrin Mison
Attachments: After_1.png, After_2.png, before_1.png, Before_2.png
I created an EJB Project, added a session bean and converted it to a Maven project (via
right-click, Configure->Convert to Maven Project). Left default values in the Create
POM dialog.
These two warnings and errors now manifest:
ERROR:Java compiler level does not match the version of the installed Java project
facet.
WARNING:Build path specifies execution environment J2SE-1.5. There are no JREs installed
in the workspace that are strictly compatible with this environment.
It appears to try to switch the Java build settings to use 1.5 although it was configured
for 1.6.
Before and after screenshots of settings changes attached.
Project builds again after changing the JRE in the Java Build Path/Libraries back to Java
SE 6 (MacOS X Default) and the Compiler compliance level to 1.6
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