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.

openjpa-users | laudio.info | 4 years ago
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    openjpa, maven and persistence.xml. help me please

    openjpa-users | 4 years ago | laudio.info
    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.
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    org.apache.openjpa.util.MetaDataException while build time enhancing using ANT

    Stack Overflow | 5 years ago | Natraj
    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.
  3. 0

    Can somebody tell me how to generate DDLs

    openjpa-users | 8 years ago | Phani Madgula
    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.
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    Enhancing openJPA classes in Eclipse

    Stack Overflow | 6 years ago | user594883
    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 &lt;properties&gt; or &lt;propertiesFile&gt; attributes of the task's nested &lt;config&gt; element. This can also occur if your OpenJPA distribution jars are corrupt, or if your security policy is overly strict.
  6. 0

    @IdClass with Timestamp value

    Oracle Community | 9 years ago | 666705
    org.apache.openjpa.util.MetaDataException: The id class specified by type "class com.lifelinesys.hsrm.persistence.model.EimHsrSchedule" does not match the primary key fields of the class. Make sure your identity class has the same primary keys as your persistent type, that the access types are the same, and if you are getting this error at runtime, that you have your persistent class since last compiling your identity class. FailedObject: setCalendarDate [java.lang.String]

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    Root Cause Analysis

    1. 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.

      at org.apache.openjpa.meta.MetaDataRepository.initializeMetaDataFactory()
    2. OpenJPA Aggregate Jar
      Configurations.configureInstance
      1. org.apache.openjpa.meta.MetaDataRepository.initializeMetaDataFactory(MetaDataRepository.java:1904)
      2. org.apache.openjpa.meta.MetaDataRepository.endConfiguration(MetaDataRepository.java:1885)
      3. org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:518)
      4. org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:443)
      4 frames