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https://issues.apache.org/jira/browse/MNG-8349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17892373#comment-17892373
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Michael Osipov edited comment on MNG-8349 at 10/24/24 7:27 AM:
---------------------------------------------------------------
I am genuinely confused since I expected this to be a pure string comparison.
was (Author: michael-o):
I am genuinely confused since I expected this to be a pure string comparsion.
> NumberFormatException during model building
> -------------------------------------------
>
> Key: MNG-8349
> URL: https://issues.apache.org/jira/browse/MNG-8349
> Project: Maven
> Issue Type: Bug
> Reporter: Guillaume Nodet
> Assignee: Guillaume Nodet
> Priority: Major
> Fix For: 4.0.0-beta-6
>
>
> {code}
> <project>
> <modelVersion>4..0.0</modelVersion>
> <groupId>org.test</groupId>
> <artifactId>foo</artifactId>
> <version>1.0-SNAPSHOT</version>
> <packaging>jar</packaging>
> </project>
> {code}
> The above pom.xml leads to the following error:
> {code}
> [INFO] Scanning for projects...
> [ERROR] Internal error: java.lang.NumberFormatException: For input string: ""
> -> [Help 1]
> org.apache.maven.InternalErrorException: Internal error:
> java.lang.NumberFormatException: For input string: ""
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:157)
> at
> org.apache.maven.cling.invoker.mvn.DefaultMavenInvoker.doExecute(DefaultMavenInvoker.java:496)
> at
> org.apache.maven.cling.invoker.mvn.DefaultMavenInvoker.execute(DefaultMavenInvoker.java:113)
> at
> org.apache.maven.cling.invoker.mvn.DefaultMavenInvoker.execute(DefaultMavenInvoker.java:80)
> at
> org.apache.maven.cling.invoker.LookupInvoker.doInvoke(LookupInvoker.java:235)
> at
> org.apache.maven.cling.invoker.LookupInvoker.invoke(LookupInvoker.java:210)
> at org.apache.maven.cling.ClingSupport.run(ClingSupport.java:68)
> at org.apache.maven.cling.MavenCling.main(MavenCling.java:51)
> at
> jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
> at java.lang.reflect.Method.invoke(Method.java:580)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:255)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:201)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:361)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:314)
> Caused by: java.lang.NumberFormatException: For input string: ""
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
> at java.lang.Long.parseLong(Long.java:719)
> at java.lang.Long.valueOf(Long.java:1157)
> at
> org.apache.maven.internal.impl.model.DefaultModelValidator.compareModelVersions(DefaultModelValidator.java:1967)
> at
> org.apache.maven.internal.impl.model.DefaultModelValidator.validateModelVersion(DefaultModelValidator.java:1911)
> at
> org.apache.maven.internal.impl.model.DefaultModelValidator.validateFileModel(DefaultModelValidator.java:367)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$DefaultModelBuilderSession.doReadFileModel(DefaultModelBuilder.java:1434)
> at
> org.apache.maven.internal.impl.model.DefaultModelCache$CachingSupplier.get(DefaultModelCache.java:178)
> at
> org.apache.maven.internal.impl.model.DefaultModelCache.computeIfAbsent(DefaultModelCache.java:65)
> at
> org.apache.maven.internal.impl.model.DefaultModelCache.computeIfAbsent(DefaultModelCache.java:56)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$DefaultModelBuilderSession.cache(DefaultModelBuilder.java:1734)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$DefaultModelBuilderSession.readFileModel(DefaultModelBuilder.java:1239)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$DefaultModelBuilderSession.loadFilePom(DefaultModelBuilder.java:733)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$DefaultModelBuilderSession.loadFromRoot(DefaultModelBuilder.java:711)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$DefaultModelBuilderSession.buildBuildPom(DefaultModelBuilder.java:658)
> at
> org.apache.maven.internal.impl.model.DefaultModelBuilder$1.build(DefaultModelBuilder.java:226)
> at
> org.apache.maven.project.DefaultProjectBuilder$BuildSession.build(DefaultProjectBuilder.java:497)
> at
> org.apache.maven.project.DefaultProjectBuilder$BuildSession.lambda$doBuild$5(DefaultProjectBuilder.java:474)
> at
> java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
> at java.util.Collections$2.tryAdvance(Collections.java:5073)
> at java.util.Collections$2.forEachRemaining(Collections.java:5081)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
> at
> java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
> at
> org.apache.maven.project.DefaultProjectBuilder$BuildSession.doBuild(DefaultProjectBuilder.java:476)
> at
> org.apache.maven.project.DefaultProjectBuilder$BuildSession.build(DefaultProjectBuilder.java:450)
> at
> org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:184)
> at
> org.apache.maven.project.collector.DefaultProjectsSelector.selectProjects(DefaultProjectsSelector.java:61)
> at
> org.apache.maven.project.collector.RequestPomCollectionStrategy.collectProjects(RequestPomCollectionStrategy.java:49)
> at
> org.apache.maven.graph.DefaultGraphBuilder.getProjectsForMavenReactor(DefaultGraphBuilder.java:364)
> at
> org.apache.maven.graph.DefaultGraphBuilder.build(DefaultGraphBuilder.java:100)
> at org.apache.maven.DefaultMaven.buildGraph(DefaultMaven.java:629)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:250)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:225)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:149)
> at
> org.apache.maven.cling.invoker.mvn.DefaultMavenInvoker.doExecute(DefaultMavenInvoker.java:496)
> at
> org.apache.maven.cling.invoker.mvn.DefaultMavenInvoker.execute(DefaultMavenInvoker.java:113)
> at
> org.apache.maven.cling.invoker.mvn.DefaultMavenInvoker.execute(DefaultMavenInvoker.java:80)
> at
> org.apache.maven.cling.invoker.LookupInvoker.doInvoke(LookupInvoker.java:235)
> at
> org.apache.maven.cling.invoker.LookupInvoker.invoke(LookupInvoker.java:210)
> at org.apache.maven.cling.ClingSupport.run(ClingSupport.java:68)
> at org.apache.maven.cling.MavenCling.main(MavenCling.java:51)
> at
> jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
> at java.lang.reflect.Method.invoke(Method.java:580)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:255)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:201)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:361)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:314)
> [ERROR]
> [ERROR] To see the full stack trace of the errors, re-run Maven with the '-e'
> switch
> [ERROR] Re-run Maven using the '-X' switch to enable verbose output
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please
> read the following articles:
> [ERROR] [Help 1]
> http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException
> {code}
> The error is somehow expected given the typo in the {{modelVersion}}, but a
> more friendly exception would be welcomed.
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