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https://issues.apache.org/jira/browse/OPENJPA-2021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13053884#comment-13053884
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Albert Lee commented on OPENJPA-2021:
-------------------------------------
Wilson,
The exception showed the failure is caused by not resolving MetaDataFactory.
It is not complaining about not finding the persistence.xml.
You may want to step-into MappingFactoryValue's
public MetaDataFactory instantiateMetaDataFactory(Configuration conf,
PluginValue metaPlugin, String mapping, boolean fatal) {
method to figure out why no MetaDataFactory is found in this code path.
Albert Lee.
> Report persistence.xml missing when trying to enhance openJPA entity from
> eclipse
> ---------------------------------------------------------------------------------
>
> Key: OPENJPA-2021
> URL: https://issues.apache.org/jira/browse/OPENJPA-2021
> Project: OpenJPA
> Issue Type: Bug
> Components: Enhance
> Affects Versions: 2.1.0
> Environment: Win 7, Eclipse 3.6, MySQL 5.5
> Reporter: hangchen222
> Labels: Enhance,, error, openjpa-2.1.0-r422266:1071316, user
>
> I try to enhance the entity in my project with OpenJPA, and get the result as
> followed.
> But in fact it DOES existed for when I deploy the project the OpenJPA can
> visit the persistence.xml and read the JDBC connection.
> Please be free to contact if any more info required and thanks in advance.
> Wilson Chen
> Detailed followed------------------------------------------------
> enhance:
> [echo] ${enhance.cp}
> [openjpac] <openjpa-2.1.0-r422266:1071316 fatal user error>
> org.apache.openjpa.util.MetaDataException: MetaDataFactory could not be
> configured (conf.newMetaDataFactoryInstance() returned null). This might mean
> that no configuration properties were found. Ensure that you have a
> META-INF/persistence.xml file, that it is available in your classpath, or
> that the properties file you are using for configuration is available. If you
> are using Ant, please see the <properties> or <propertiesFile> attributes of
> the task's nested <config> element. This can also occur if your OpenJPA
> distribution jars are corrupt, or if your security policy is overly strict.
> [openjpac] at
> org.apache.openjpa.meta.MetaDataRepository.initializeMetaDataFactory(MetaDataRepository.java:1904)
> [openjpac] at
> org.apache.openjpa.meta.MetaDataRepository.endConfiguration(MetaDataRepository.java:1885)
> [openjpac] at
> org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:518)
> [openjpac] at
> org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:443)
> [openjpac] at
> org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:104)
> [openjpac] at
> org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
> [openjpac] at
> org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
> [openjpac] at
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:949)
> [openjpac] at
> org.apache.openjpa.ant.PCEnhancerTask.executeOn(PCEnhancerTask.java:88)
> [openjpac] at
> org.apache.openjpa.lib.ant.AbstractTask.execute(AbstractTask.java:171)
> [openjpac] at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
> [openjpac] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> [openjpac] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown
> Source)
> [openjpac] at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> [openjpac] at java.lang.reflect.Method.invoke(Unknown Source)
> [openjpac] at
> org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
> [openjpac] at org.apache.tools.ant.Task.perform(Task.java:348)
> [openjpac] at org.apache.tools.ant.Target.execute(Target.java:357)
> [openjpac] at
> org.apache.tools.ant.Target.performTasks(Target.java:385)
> [openjpac] at
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
> [openjpac] at
> org.apache.tools.ant.Project.executeTarget(Project.java:1306)
> [openjpac] at
> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
> [openjpac] at
> org.eclipse.ant.internal.core.ant.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
> [openjpac] at
> org.apache.tools.ant.Project.executeTargets(Project.java:1189)
> [openjpac] at
> org.eclipse.ant.internal.core.ant.InternalAntRunner.run(InternalAntRunner.java:662)
> [openjpac] at
> org.eclipse.ant.internal.core.ant.InternalAntRunner.run(InternalAntRunner.java:495)
> [openjpac] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> [openjpac] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown
> Source)
> [openjpac] at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> [openjpac] at java.lang.reflect.Method.invoke(Unknown Source)
> [openjpac] at
> org.eclipse.ant.core.AntRunner.run(AntRunner.java:378)
> [openjpac] at
> org.eclipse.ant.internal.launching.launchConfigurations.AntLaunchDelegate.runInSameVM(AntLaunchDelegate.java:321)
> [openjpac] at
> org.eclipse.ant.internal.launching.launchConfigurations.AntLaunchDelegate.launch(AntLaunchDelegate.java:274)
> [openjpac] at
> org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853)
> [openjpac] at
> org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:702)
> [openjpac] at
> org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:695)
> [openjpac] at
> org.eclipse.core.externaltools.internal.model.ExternalToolBuilder.launchBuild(ExternalToolBuilder.java:181)
> [openjpac] at
> org.eclipse.core.externaltools.internal.model.ExternalToolBuilder.doBuildBasedOnScope(ExternalToolBuilder.java:169)
> [openjpac] at
> org.eclipse.core.externaltools.internal.model.ExternalToolBuilder.build(ExternalToolBuilder.java:88)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:629)
> [openjpac] at
> org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:172)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:203)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:255)
> [openjpac] at
> org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:258)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:311)
> [openjpac] at
> org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:343)
> [openjpac] at
> org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:144)
> [openjpac] at
> org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:242)
> [openjpac] at
> org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
> BUILD FAILED
> ...\BpcApiTestWeb\src\enhance.xml:50: <openjpa-2.1.0-r422266:1071316 fatal
> user error> org.apache.openjpa.util.MetaDataException: MetaDataFactory could
> not be configured (conf.newMetaDataFactoryInstance() returned null). This
> might mean that no configuration properties were found. Ensure that you have
> a META-INF/persistence.xml file, that it is available in your classpath, or
> that the properties file you are using for configuration is available. If you
> are using Ant, please see the <properties> or <propertiesFile> attributes of
> the task's nested <config> element. This can also occur if your OpenJPA
> distribution jars are corrupt, or if your security policy is overly strict.
> And that is the enhance file I used.
> <project name="jpa_enhance_builder">
>
> <target name="openjpa.libs.check" unless="openjpa.libs">
> <fail message="Please set -Dopenjpa.libs in your builder
> configuration!" />
> </target>
> <target name="build.dir.check" unless="build.dir">
> <fail message="Please set -Dbuild.dir in your builder
> configuration!" />
> </target>
>
> <target name="enhance" depends="openjpa.libs.check, build.dir.check">
>
>
> <path id="enhance.cp">
> <pathelement
> location="${basedir}${file.separator}${build.dir}"/>
> <fileset dir="${basedir}${file.separator}${openjpa.libs}">
> <include name="**/*.jar"/>
> </fileset>
> </path>
> <echo message="${enhance.cp}"/>
> <taskdef name="openjpac"
> classname="org.apache.openjpa.ant.PCEnhancerTask">
> <classpath refid="enhance.cp"/>
> </taskdef>
>
> <openjpac>
> <!--
> <classpath refid="openjpa.path.id"/>
> -->
> <classpath>
> <fileset
> dir="D:\I031900\workspace\BpcApiTestWeb\lib\META-INF\persistence.xml" />
> </classpath>
> </openjpac>
> </target>
> </project>
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