Question

我的应用程序具有一个复合持久性单元 mainPU ，其中包含2个成员（ queryPU 和 entityPU ）。在EclipseLink 2.5中使用Criteria API时，它没有任何问题。但是，升级到EclipseLink 2.7时，出现错误“在元模型中找不到键类[ XXX ]的[EntityType]”，其中 XXX 是在 entityPU

我对该问题有一些看法：

仅在使用Criteria API时出现此问题，并且没有使用JPQL时出现问题。
默认情况下，我的应用程序加载 mainPU 。如果我尝试获取元模型，它将始终返回空列表。如果我明确加载在DAO中使用 entityPU 的EntityManagerFactory，则它可以加载EntityType的完整列表，问题就消失了！
```
EntityManagerFactory factory = Persistence.createEntityManagerFactory("entityPU");

Metamodel m2 = factory.getMetamodel(); //m2 return a list of EntityType!
```

我的EclipseLink 2.7应用程序中是否有错误的配置？

下面显示persistence.xml

mainPU

<?xml version="1.0" encoding="UTF-8"?>
<persistence
xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence

http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">


<persistence-unit name="mainPU" transaction-type="JTA">

    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>java:jboss/datasources/appds</jta-data-source>  
    <jar-file>icms-entity-lib-0.2.9.544.jar</jar-file>
    <jar-file>../icmshrnmc-ejb.jar</jar-file>

    <properties>
        <property name="jboss.entity.manager.jndi.name" value="java:jboss/persistence/mainPU" />
        <property name="eclipselink.target-database"
            value="org.eclipse.persistence.platform.database.oracle.Oracle11Platform" />
        <property name="eclipselink.target-server" value="JBoss" />
        <property name="eclipselink.composite-unit" value="true" />
        <property name="eclipselink.session.customizer"
            value="x.y.ejb.dao.entity.DefaultEntityInterceptor" />
            <property name="eclipselink.logging.level" value="ALL" />
        <property name="eclipselink.deploy-on-startup" value="true"/>
    </properties>  

</persistence-unit>

queryPU

<?xml version="1.0" encoding="UTF-8"?>
<persistence
xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence

http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">


<persistence-unit name="queryPU" transaction-type="JTA">

    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>java:jboss/datasources/appds</jta-data-source>

    <mapping-file>x/y/icmshrnmc/model/common/dao/namedquery/HrnNat.orm.xml</mapping-file>
    ... 
    ... 
    ... 


    <properties>
        <property name="eclipselink.composite-unit-member" value="true" />
    </properties>
</persistence-unit>

entityPU

<?xml version="1.0" encoding="UTF-8"?>
<persistence
xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
                     http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">

<persistence-unit name="entityPU" transaction-type="JTA">

<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>java:jboss/datasources/appds</jta-data-source>
<non-jta-data-source>java:jboss/datasources/appds</non-jta-data-source>


<mapping-file>x/y/fmk/model/application/dao/entity/AuditEntity.orm.xml</mapping-file>
... 
... 
... 


<shared-cache-mode>NONE</shared-cache-mode>
<properties>

    <property name="eclipselink.jdbc.sequence-connection-pool" value="true" />
    <property name="eclipselink.jdbc.sequence-connection-pool.non-jta-data-source" value="java:jboss/datasources/fmkseqds" /> 
</properties>

使用EclipseLink 2.7.4时为空的MetaModel

0 个答案: