DataNucleus Maven 增强器插件错误 - 找不到类

Question

我正在从 Maven 运行 DataNucleus Enhancer 插件

        <plugin>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-maven-plugin</artifactId>
            <version>${datanucleus.maven.plugin.version}</version>
            <configuration>
                <log4jConfiguration>${project.build.outputDirectory}/log4j.properties</log4jConfiguration>
                <verbose>true</verbose>
                <enhancerName>ASM</enhancerName>
                <api>JPA</api>
                <fork>false</fork>
                <metadataIncludes>com/mydomain/*.class</metadataIncludes>
                <generateConstructor>true</generateConstructor>
            </configuration>
            <executions>
                <execution>
                    <phase>process-classes</phase>
                    <goals>
                        <goal>enhance</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

但我在运行mvn process-classes -X时收到此错误

[DEBUG] Configuring mojo org.datanucleus:datanucleus-maven-plugin:4.0.0-release:enhance from plugin realm ClassRealm[plugin>org.datanucleus:datanucleus-maven-plugin:4.0.0-release, parent: sun.misc.Launcher$AppClassLoader@5dcba031]
[DEBUG] Configuring mojo 'org.datanucleus:datanucleus-maven-plugin:4.0.0-release:enhance' with basic configurator -->
[DEBUG]   (f) alwaysDetachable = false
[DEBUG]   (f) api = JPA
[DEBUG]   (f) classpathElements = [/home/me/workspace/myproject/target/classes, ...]
[DEBUG]   (f) detachListener = false
[DEBUG]   (f) fork = false
[DEBUG]   (f) generateConstructor = true
[DEBUG]   (f) generatePK = true
[DEBUG]   (f) log4jConfiguration = /home/me/workspace/myproject/target/classes/log4j.properties
[DEBUG]   (f) metadataDirectory = /home/me/workspace/myproject/target/classes
[DEBUG]   (f) metadataIncludes = com/mydomain/*.class
[DEBUG]   (f) pluginArtifacts = [org.datanucleus:datanucleus-maven-plugin:maven-plugin:4.0.0-release:, org.codehaus.plexus:plexus-utils:jar:3.0.8:compile, org.codehaus.plexus:plexus-component-annotations:jar:1.5.5:compile, org.sonatype.sisu:sisu-inject-bean:jar:2.3.0:compile, org.sonatype.sisu:sisu-guice:jar:no_aop:3.1.0:compile, org.sonatype.sisu:sisu-guava:jar:0.9.9:compile, org.apache.xbean:xbean-reflect:jar:3.4:compile, log4j:log4j:jar:1.2.12:compile, commons-logging:commons-logging-api:jar:1.1:compile, com.google.collections:google-collections:jar:1.0:compile, junit:junit:jar:3.8.2:compile]
[DEBUG]   (f) quiet = false
[DEBUG]   (f) useFileListFile = auto
[DEBUG]   (f) verbose = true
[DEBUG] -- end configuration --
[DEBUG] Metadata Directory is : /home/me/workspace/myproject/target/classes
[INFO]   CP: ...
[INFO]   CP: /home/me/workspace/myproject/target/classes
[INFO]   CP: ...
DataNucleus Enhancer (version 4.0.4) for API "JPA"
DataNucleus Enhancer : Classpath
>>  /usr/share/maven/boot/plexus-classworlds-2.x.jar
ERROR [main] DataNucleus.MetaData (Log4JLogger.java:115) - Class "com.mydomain.#UNKNOWN" has MetaData yet the class cant be found. Please check your CLASSPATH specifications.
Class "com.mydomain.MyClass" has MetaData yet the class cant be found. Please check your CLASSPATH specifications.
ERROR [main] DataNucleus.Enhancer (Log4JLogger.java:125) - DataNucleus Enhancer completed with an error. Please review the enhancer log (at DEBUG level) for full details. Some classes may have been enhanced but some caused errors
Class "com.mydomain.MyClass" has MetaData yet the class cant be found. Please check your CLASSPATH specifications.
org.datanucleus.metadata.InvalidClassMetaDataException: Class "com.mydomain.MyClass" has MetaData yet the class cant be found. Please check your CLASSPATH specifications.
    at org.datanucleus.metadata.ClassMetaData.populateMemberMetaData(ClassMetaData.java:468)
    at org.datanucleus.metadata.ClassMetaData.populate(ClassMetaData.java:219)
    at org.datanucleus.metadata.MetaDataManagerImpl$1.run(MetaDataManagerImpl.java:2822)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.datanucleus.metadata.MetaDataManagerImpl.populateAbstractClassMetaData(MetaDataManagerImpl.java:2816)
    at org.datanucleus.metadata.MetaDataManagerImpl.populateFileMetaData(MetaDataManagerImpl.java:2639)
    at org.datanucleus.metadata.MetaDataManagerImpl.initialiseFileMetaDataForUse(MetaDataManagerImpl.java:1324)
    at org.datanucleus.metadata.MetaDataManagerImpl.loadClasses(MetaDataManagerImpl.java:613)
    at org.datanucleus.enhancer.DataNucleusEnhancer.getFileMetadataForInput(DataNucleusEnhancer.java:711)
    at org.datanucleus.enhancer.DataNucleusEnhancer.enhance(DataNucleusEnhancer.java:488)
    at org.datanucleus.enhancer.DataNucleusEnhancer.main(DataNucleusEnhancer.java:1139)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.datanucleus.maven.AbstractDataNucleusMojo.executeInJvm(AbstractDataNucleusMojo.java:331)
    at org.datanucleus.maven.AbstractEnhancerMojo.enhance(AbstractEnhancerMojo.java:281)
    at org.datanucleus.maven.AbstractEnhancerMojo.executeDataNucleusTool(AbstractEnhancerMojo.java:81)
    at org.datanucleus.maven.AbstractDataNucleusMojo.execute(AbstractDataNucleusMojo.java:125)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)

DataNucleus 增强器完成但出现错误。请查看增强器日志（在调试级别）以获取完整详细信息。有些类可能已经增强，但有些会导致错误

我检查了target/classes 目录，课程就在其中。运行mvn compile 会成功。

Answer 1

问题是 @AssociationOverride 注释的 @JoinColumn 名称错误。我想错误信息应该更清楚。