Hi Dave! I think we have/had a similar issue here. We have plenty of manifest first projects, among them three with a legacy folder named "lib", where some repackaged libs reside. Whenever we change a branch, the ide notices, that the projects are not up to date anymore and suggests a call of "Update Project Configuration". Doing this will in the first call "destroy" these project's project-setup with an error message. Then triggering "Update Project Configuration" again, repairs the project.
Today I was experimenting with the build-helper-maven-plugin. I am adding the librarie's directory in the plugins configuration and the issue seems to be at least reduced, if not resolved. But: We have the external libs statically in our projects and do not fetch them as part of the maven build process. I don't know if i missed something in your requirements, but do you know the Spring Enterprise Bundle Repository at http://ebr.springsource.com ? They have osgi-copatible versions of many commonly used libraries. Also we made the experience, that recent versions of popular libraries are osgi compatible in the meantime. We collect these in our project in a maven generated p2-repository, which we use in our targetplatform, so we do not need to repackage them. Hope I could help a bit. Regards, Markward 2012/6/22 Dave Hartnoll <[email protected]> > I am aware of maven-dependency-plugin not being supported. However, I am > fairly certain that my use of it in the project is safe, and is not the > cause of the .classpath anomalies I highlighted. As I mentioned in the > original post, I am getting similar .classpath issues on a multi-package > maven-structured Java project. This other project definitely does not use > the maven-dependency-plugin. > > It's difficult to re-construct this simple project without > maven-dependency-plugin as I need somehow to get the dependent library > copied into the workspace. However, I can simply comment-out the references > to the plugin after the project has been built for the first time as the > library is then always present in target/libs (until a clean is done). > After saving the pom with maven-dependency-plugin removed, and re-running > Update Project several times, I still see the same .classpath anomolies. > > Dave. > > -----Original Message----- > From: [email protected] [mailto:[email protected]] > On Behalf Of Igor Fedorenko > Sent: 22 June 2012 14:50 > To: [email protected] > Subject: Re: [m2e-users] M2E Update Project issue > > Running maven-dependency-plugin inside workspace is not supported. From > m2e wiki [1] > > <quote> > Beware that m2e does not provide any safeguards against rogue maven > plugins that leak classloaders, modify random files inside workspace or > throw nasty exceptions to fail the build. Use this as the last resort and > make sure you know what you are doing. > </quote> > > Can you reproduce the problem without this? > > [1] > > http://wiki.eclipse.org/M2E_plugin_execution_not_covered#execute_plugin_goal > > -- > Regards, > Igor > > On 12-06-22 9:23 AM, Dave Hartnoll wrote: > > I am putting together a large Eclipse RCP project using Eclipse 3.7.2, > Tycho 0.15.0 and m2e 1.1 latest. On several occasions, I have seen errors > along the lines of "The project is not up to date with the pom. Run Update > Project" (paraphrasing from memory). This happens more often when updating > a project from source control such as when committing changes from one PC > and updating on another. The problem is that running Maven->Update > Project... does not always resolve the problem immediately - it sometimes > has to be run twice - with no net change in any of the project data. > > > > I've managed to extract and simplify a single small project that can be > used to repeat some of the anomalies I am seeing. This project simply > repackages a standard jar library (Log4j) as an OSGi plug-in. There may be > better ways to do this, and as an aside I'd be interested to hear them, but > this is really irrelevant for now as I get similar issues with a larger > multi-package maven-structured Java project too. > > > > The attached .zip contains the necessary Eclipse project files. > > 1. Create a new general project (File->New->Project... then > General->Project) > > 2. Copy the contents of the .zip to the project (overwriting the > existing .project file). > > 3. Right-click project, choose Run As->Maven build > > 4. In the 'Edit Configuration' dialogue, type 'package' into the > Goals field > > 5. Click 'Refresh' tab; click 'Refresh resources upon completion' > > 6. Click 'Run' > > > > Maven should now download some artifacts and build the OSGi version of > the Log4j library. > > > > Next, open the .classpath from the project so you can see what happens > > during the next steps. (If you can't see .classpath, open the Package > > Explorer menu - the down-pointing white triangle - and select > > 'Filters...'. In the next dialogue, uncheck '.* resources' and click > > OK.) > > > > Now here is the weird behaviour... > > a. Right-click the project and select 'Maven->Update Project...'. > Click OK in the next dialogue. > > b. Notice what happens to the contents of .classpath > > > > Repeat steps a and b a few more times and notice how eventually the > project toggles between two states, one of which is OK (but contains more > than necessary) and the other which has errors - the .classpath only > references a 'classes' folder (that is also not necessary), but loses the > reference to the needed library. > > > > I'm not sure if this is purely an m2e bug or an > understanding/configuration issue that has caused m2e to behave strangely. > Any help gratefully received. (NB: although I'm using m2e 1.1 latest from > sonatype's repo, I'm seeing similar issues with m2e 1.0 from eclipse.org). > > > > Dave. > > > > P.S. In case anyone can't access the .zip file, I've listed the 5 > > files that seed the Eclipse project below > > > > ===================================================== > > META-INF\MANIFEST.MF > > ===================================================== > > Manifest-Version: 1.0 > > Bundle-ManifestVersion: 2 > > Bundle-Name: Log4j as OSGI plugin > > Bundle-SymbolicName: jar2plugin.log4j > > Bundle-Version: 1.2.16 > > Bundle-ClassPath: target/libs/log4j-1.2.16.jar > > Export-Package: org.apache.log4j, > > org.apache.log4j.xml > > Bundle-RequiredExecutionEnvironment: JavaSE-1.6 > > > > > > ===================================================== > > .classpath > > ===================================================== > > <?xml version="1.0" encoding="UTF-8"?> <classpath> > > <classpathentry kind="lib" path="target/libs/log4j-1.2.16.jar"/> > > </classpath> > > > > > > ===================================================== > > .project > > ===================================================== > > <?xml version="1.0" encoding="UTF-8"?> > > <projectDescription> > > <name>jar2plugin.log4j</name> > > <comment></comment> > > <projects> > > </projects> > > <buildSpec> > > <buildCommand> > > <name>org.eclipse.pde.ManifestBuilder</name> > > <arguments> > > </arguments> > > </buildCommand> > > <buildCommand> > > <name>org.eclipse.m2e.core.maven2Builder</name> > > <arguments> > > </arguments> > > </buildCommand> > > </buildSpec> > > <natures> > > <nature>org.eclipse.m2e.core.maven2Nature</nature> > > <nature>org.eclipse.pde.PluginNature</nature> > > <nature>org.eclipse.jdt.core.javanature</nature> > > </natures> > > </projectDescription> > > > > > > ===================================================== > > build.properties > > ===================================================== > > bin.includes = META-INF/,\ > > .,\ > > target/libs/log4j-1.2.16.jar > > > > > > ===================================================== > > pom.xml > > ===================================================== > > <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" > http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation=" > http://maven.apache.org/POM/4.0.0 > http://maven.apache.org/xsd/maven-4.0.0.xsd";> > > <modelVersion>4.0.0</modelVersion> > > <groupId>jar2plugin</groupId> > > <artifactId>jar2plugin.log4j</artifactId> > > <version>1.2.16</version> > > <packaging>eclipse-plugin</packaging> > > > > <properties> > > <tycho-version>0.15.0</tycho-version> > > > <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> > > </properties> > > > > <dependencies> > > <dependency> > > <groupId>log4j</groupId> > > <artifactId>log4j</artifactId> > > <version>1.2.16</version> > > <type>jar</type> > > <scope>compile</scope> > > </dependency> > > </dependencies> > > > > <build> > > <plugins> > > > > <plugin> > > <groupId>org.eclipse.tycho</groupId> > > <artifactId>tycho-maven-plugin</artifactId> > > <version>${tycho-version}</version> > > <extensions>true</extensions> > > </plugin> > > > > <plugin> > > <groupId>org.apache.maven.plugins</groupId> > > > <artifactId>maven-dependency-plugin</artifactId> > > <executions> > > <execution> > > <id>copy-dependencies</id> > > <phase>initialize</phase> > > <goals> > > > <goal>copy-dependencies</goal> > > </goals> > > <configuration> > > > <excludeTransitive>true</excludeTransitive> > > > <includeArtifactIds>log4j</includeArtifactIds> > > > <outputDirectory>target/libs</outputDirectory> > > > <overWriteReleases>true</overWriteReleases> > > > <overWriteSnapshots>true</overWriteSnapshots> > > > <overWriteIfNewer>true</overWriteIfNewer> > > </configuration> > > </execution> > > </executions> > > </plugin> > > > > </plugins> > > > > <pluginManagement> > > <plugins> > > <plugin> > > <groupId>org.eclipse.m2e</groupId> > > > <artifactId>lifecycle-mapping</artifactId> > > <version>1.0.0</version> > > <configuration> > > <lifecycleMappingMetadata> > > <pluginExecutions> > > > <pluginExecution> > > > <pluginExecutionFilter> > > > <groupId>org.apache.maven.plugins</groupId> > > > <artifactId>maven-dependency-plugin</artifactId> > > > <versionRange>[0.0.0,)</versionRange> > > > <goals> > > > <goal>copy-dependencies</goal> > > > <goal>unpack</goal> > > > </goals> > > > </pluginExecutionFilter> > > > <action> > > > <execute> > > > <runOnIncremental>false</runOnIncremental> > > > </execute> > > > </action> > > > </pluginExecution> > > </pluginExecutions> > > </lifecycleMappingMetadata> > > </configuration> > > </plugin> > > </plugins> > > </pluginManagement> > > </build> > > > > </project> > > > > > > > > _______________________________________________ > > m2e-users mailing list > > [email protected] > > https://dev.eclipse.org/mailman/listinfo/m2e-users > > > > _______________________________________________ > m2e-users mailing list > [email protected] > https://dev.eclipse.org/mailman/listinfo/m2e-users > _______________________________________________ > m2e-users mailing list > [email protected] > https://dev.eclipse.org/mailman/listinfo/m2e-users >
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