I have a maven multi-module project whose parent POM states:
<modules>
<module>ui</module>
<module>controller</module> <!-- Depends on ui module -->
</modules>
The following runs fine:
project-root> mvn clean package
However problems arise if I try:
project-root/controller> mvn clean package
The error reports the ui artifact as an unresolved dependency.
Yes, I realize that this question has been asked before. However it has no clear answer (the accepted answer for that instance is only a workaround). This behavior is explained away as a difference between dependency resolution and reactor builds. A post about Maven 3 suggests that it is resolved in that released. I am using Maven 3.0.3 and see no relief. Maven 3.0.4's release notes don't suggest a change in this behavior.
How do you handle such a situation? Is the only recourse to do a build from the project-root every time?
The problem you are faced with is that you try to call a build from a sibling, in which case the dependency resolution will be done against your local repository.
There are several solutions to your problem. The first one is to go to your root and do a mvn install. Afterwards, you should be able to go to your controller and do mvn clean package. But I recommend to go to your root and build specifically the controller module:
mvn -pl controller clean package
But the prerequisite is to do an mvn install before that.
Related
I have created maven based web application so after created application i am getting two errors in pom.xml which are
1.Multiple annotations found at this line:
- Failure to transfer org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted
until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central (http://
repo.maven.apache.org/maven2): null to http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-resources-plugin/2.6/maven-resources-plugin-2.6.pom
2.Multiple annotations found at this line:
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (execution: default-testCompile, phase: test-compile)
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (execution: default-compile, phase: compile)
- CoreException: Could not calculate build plan: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for
org.apache.maven.plugins:maven-compiler-plugin:jar:3.1: ArtifactResolutionException: Failure to transfer org.apache.maven.plugins:maven-compiler-plugin:pom:3.1
Could you please let me know what needs to be done for resolving the issue
If you are facing the same issue I described in my comment above then it seems I could fix it by running mvn eclipse:eclipse with working directory set to Eclipse project folder i.e.
$ cd /path/to/eclipse/workspace/Project
$ mvn eclipse:eclipse
Does this work for you ? Maybe your environment is different . Providing more details might help others to understand your problem even better so as to offer useful suggestions .
I had similar problem Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (execution: default-testCompile, phase: test-compile).
To Fix (apart from installing M2E plug-in and all):
Ensure installed maven is > 3.1 (using mvn -v). If not, you need to upgrade.
Ensure eclipse is pointing to correct maven location (Window->Preferences->Maven->Installations)
On Command prompt, go to project home directory and run mvn eclipse:clean and mvn eclipse:eclipse
Disable and enable Maven nature in eclipse (Right click on project, goto Maven -> Disable Maven Nature. To enable, Right click on project goto Configure -> Convert to Maven Project)
Can someone tell me how to install Rascal?
The install instruction say - Eclipse Indigo for RCP/RAP - got it.
Then Install New Software and put in the repository address:
http://update.rascal-mpl.org/stable/
- done that
Check "Contact all update sites during install to find required software" - ok
Hit Next, and it complains can't find Jetty, so set up its repo, can't find some Http lib, and on it goes.
What I have done, after I temporarily gave up on Eclipse, is to compile using the Maven build.
This makes me think, is a dependency missing from the Developer Dependencies list? That being the 'rascal-master' project, which contains not much more than the top-level pom.xml file?
I downloaded that too, and tried to build. It did not work because Tycho could not resolve dependencies correctly, it ended up looking for pdb.values:0.0.0 instead of the correct version, I don't know how it managed to zero out the version.
I notice that there is a Jenkins build server, which presumably runs off the Maven poms? It might be an idea to update the Developer Dependencies page with an accurate list of what needs checked out to build from scratch with Maven. It should be as easy as check out some projects, then type 'mvn install' and it all works nicely. Perhaps that is already the case on the build server, but I can't get into the configurations to see how that works.
In the end I removed Tycho from the build, and found enough dependencies in the Maven central repo by hand to get it building, and just put in statements for each of them.
It really is a sad state of affairs the way that Eclipse disrespects the Maven repository, by creating their own and using their own format and tool; Tycho will not download stuff from Eclipse and put it in your local repository, from where you could use it in a more sane way.
The installation instructions seems to be outdated. I can confirm that Rascal will not install with Eclipse Indigo due to dependency errors. It works fine with Eclipse Juno for RCP/RAP.
Ouch, that's a painfull experience, it should not have been this hard, I will look into this.
As workaround: see Rascal Developer dependencies , if you install these dependencies by hand, it should work.
If you continue experiencing installation problems, leave a Github issue, since that is more suited for back and forward conversations.
To use Maven, you also need to insert the following into the pom.xml of rascal-master (replacing the old modules section if there is one):
<modules>
<module>../pdb</module>
<module>../pdb.ui</module>
<module>../pdb.values</module>
<module>../imp.runtime</module>
<module>../imp.pom</module>
<module>../ambidexter</module>
<module>../rascal</module>
<module>../rascal-eclipse</module>
<module>../rascal-shell</module>
<module>../rascal-feature</module>
<module>../rascal-update-site</module>
</modules>
Then run "mvn clean install" or "mvn clean install -DskipTests=true" from inside rascal-master.
I have a directory with a pom.xml and several subdirectories with their own pom.xml files
One subdirectory is local called thirdparty. It contains several jar files and installs them to the local maven repo when a mvn install is executed. These are needed by the mvn compile phase of the other artifacts. The root pom.xml simply executes the same step on each child pom.xml.
I'd like to modify the root pom.xml so that mvn compile will do an install on the third party folder before executing the other folders. I tried this in the maven-compiler-plugin:
<executions>
<execution>
<id>thirdparty</id>
<phase>install</phase>
</execution>
</executions>
I see nothing in the documentation about specifying a phase in a dependency element.
To make sure I have this straight, it sounds like you have an aggregator pom, AGG, and some submodules, A and B, where A is nothing but some third-party jars that have to be installed in the local repo before B will compile. If that's true, then two possibilities spring to mind:
1) Do away with A and instead install the third party jars into an appropriate standalone repo, like a local Nexus server, and add that repo to your pom. That would be the "Maven" way of doing it.
2) Add a dependency on A to B's <dependencies>. In A, configure the install plugin with an execution per jar that needs to be installed, and bind these executions to the compile phase. Then when you run compile on AGG, it will first run compile on A, which will install all the jars, followed by compile on B. Note that this will have the side effect of producing an A.jar, which will be a dependency of B, because maven assumes that every module produces exactly one artifact of some type. You might be forced to add at least one class or resource so that A.jar can actually be built. Not sure about that one. Alternately, you could experiment with setting A's packaging to "pom".
I believe you are using Maven in a wrong way.
Such kind of 3rd party dependencies should be put to local repository (or your internal Maven repository) before you run the compilation work, and dependencies in your project should be setup accordingly. "Installation of 3rd party artifacts" shouldn't be part of the build process.
And, in Maven world, we rarely have 3rd party libs exists as part of the source code. In fact one of the reason for using Maven is to get rid of such kind of libs in source code.
Sounds like you want a couple of dependancies. Look into the depends element.
I'm trying to optimize my build process (in development) in term of time to build the whole tree of maven multi-module project. Some of the POM are actually aggregation of sources/libraries that rarelly (and typically) never change. So specific sub-questions are
Is it possible to somehow configure maven to not build pom if there are no changes in sources specified in POM:project/build/sourceDirectory attribute?
Or is it possible to (at least) conditionally disable maven-bundle-plugin? - it takes most of the time.
Google could not find anything relevant Q#1. Typical solution does not work for #2 - when i try to specify 'executions' for maven-bundle-plugin (like this)
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>${maven-bundle-plugin.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<id>osgi-bundle</id>
<phase>bundle</phase>
<goals>
<goal>bundle</goal>
</goals>
i receive this error in output
[bundle:bundle]
Bundle artifact-id:bundle-id:bundle:0.1.0-SNAPSHOT : The JAR is empty: dot
Error(s) found in bundle configuration
Any help is appreciated. I'm aware about following:
* Disable a Maven plugin defined in a parent POM
(maven-bundle-plugin can't work with 'executions' tag)
* Skip execution of a maven plugin if a file does not exist (maven-bundle-plugin does not have skip confiuration option)
* How to skip lifecycle phase in multi maven module (the same as previous)
* If entire maven-bundle-plugin is moved into profile, maven does not recognize packaging=bundle.
Finally I have to admit that (C) Eugene Kuleshov - "Maven generally don't track sources/changes, so it is always a full build."
But, returning back to Java after 5+ on .NET and 5+ years erlier on C++, it looks weird for me that such a common feature like incremental build is not support by widely used tool having a history of 10+ years. So I could not spend my time on waiting to rebuild each and every unchanged module in my multi-module project and decided to make customized version of Maven 3.0.4 :)
Feel free to grab it here http://code.google.com/p/maven-onchange-activator/, try and report issues.
Maven generally don't track sources/changes, so it is always a full build. However to disable any plugin you could move it into profile and then enable/disable the whole profile, e.g. either conditionally or from the command line.
You should check things like
mvn -am
in relationship with
mvn -pl ...
so doing a build like:
mvn -am -pl SubModule clean package
will build only those modules which have been changed and which needed to be built as a result of a dependency to the change module.
I would suggest switching to Gradle.
Gradle has such support out of the box (no configuration needed) and conversion from Maven should be easy.
I have a Grail application that references a Java library (as an IntelliJ Module dependency). This works, but as soon as I add hibernate as a dependency of the Java library the Grails will no longer run.
Loading Grails 2.0.1
Error Error executing script RunApp: Provider for javax.xml.parsers.SAXParserFactory cannot be found (Use --stacktrace to see the full trace)
In my Java module, I am adding hibernate with the following:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.0.0.Final</version>
</dependency>
I can't see any good way around this. The Grails dependency-report does not show any libraries in conflict. The error occurs if the hibernate plugin is installed in the Grails application or not.
Bear in mind that (in this case) the Java library is not being incorporated via the BuildConfig.groovy. It is being incorporated as an IntelliJ Module dependency. If I incorporate the module as a jar via BuildConfig.groovy, everything works, but I lose the ability to step into the Java code.
Clarifying:
Per the JetBrains folks, the Java library is incorporated both as an IntelliJ Module dependency and in the BuildConfig.groovy. When executed from the command line, the project works, this is only an issue when starting from the IDE.
Suggestions?
Return dependency to java library to BuildConfig.groovy and use last version of IDEA: http://confluence.jetbrains.net/display/IDEADEV/IDEA+11.1+EAP . Navigation should work fine.
After experimentation, I stumbled upon the following which seems to be working very well (at least in IDEA 11.1):
Your Java library JAR should be referenced from the
BuildConfig.groovy (we use Maven, so we had to add the local Maven
repo as well)
Also reference your modules as module dependencies of the Grails module
(this is critical) in the run config for your grails project, uncheck the "add --classpath ..." option
The module dependency gives you:
Immediate awareness of the Java classes and their methods from the Grails project
Support for stepping into the Java code from your Grails project.
The BuildConfig reference gives you:
support for the grails commands, including run-app (which is how IntelliJ kicks things off when running/debugging a project)
If you leave the --classpath option checked, then you foul up the way that grails resolves its dependencies. There may be a better way to do this, but I haven't found it.
Additional Note
There's a bug in the interaction of grails and maven which causes grails to not pull in dependencies from local Maven 3 repositories if the pom.xml wasn't changed.
Therefore, our complete dependency refresh cycle looks like:
goto top
mvn clean install
find the relevant POM files in the repo and touch them
back to grails app directory and grails refresh-dependencies
run the app
You only need to do this when there are updates to the upstream Java libraries.
Hat tip to Sergey from Jet Brains for tracking that one down.