不带<jar-file>的不同服务器上的EclipseLink复合持久性单元

Question

我的问题几乎在这个帖子中回答:

EclipseLink,EntityManager需要两个持久性单元

但我使用一个persistence.xml文件来声明3个持久性单元,它工作正常.但现在我需要一个复合持久性单元,我不知道也不想为每个持久性单元构建单独的jar.没有<jar-file>标签,有没有办法做到这一点.如果不是,有人能给我一个如何使用单个持久性单元制作jar文件的示例吗？

编辑1: 这个配置我最终得到了,但它仍然不起作用 - 我得到的是这个输出,当我尝试使用em.createNamedQuery(当我有单独的持久性单位时,巫婆工作)没有任何反应代码停止createEntity行,就是这样.

persistence.xml中

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
  <persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <properties>
      <property name="eclipselink.composite-unit" value="true"/>
    </properties>
  </persistence-unit>
    <persistence-unit name="Minutis" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>database.entity.Entity1</class>
    <class>database.entity.Entity2</class>
    ...
    <properties>
      <property name="eclipselink.composite-unit.member" value="true"/>
    </properties>
  </persistence-unit>
  <persistence-unit name="Minutis2" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>database.entity.EEntity1</class>
    <class>database.entity.EEntity2</class>
    ...
    <properties>
      <property name="eclipselink.composite-unit.member" value="true"/>
    </properties>
  </persistence-unit>
  <persistence-unit name="Minutis3" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>database.entity.EEEntity1</class>
    <class>database.entity.EEEntity2</class>
    ...
    <properties>
      <property name="eclipselink.composite-unit.member" value="true"/>
    </properties>
  </persistence-unit>
</persistence>

这是如何EntityManager创建的:

Map minutis = new HashMap();
minutis.put("javax.persistence.jdbc.user", "user");
minutis.put("javax.persistence.jdbc.password", "password");
minutis.put("javax.persistence.jdbc.driver", "driver");
minutis.put("javax.persistence.jdbc.url", "url");

Map minutis2= new HashMap();
minutis2.put("javax.persistence.jdbc.user", "user");
minutis2.put("javax.persistence.jdbc.password", "password");
minutis2.put("javax.persistence.jdbc.driver", "driver");
minutis2.put("javax.persistence.jdbc.url", "url");

Map minutis3= new HashMap();
minutis3.put("javax.persistence.jdbc.user", "user");
minutis3.put("javax.persistence.jdbc.password", "password");
minutis3.put("javax.persistence.jdbc.driver", "driver");
minutis3.put("javax.persistence.jdbc.url", "url");

Map persistanceUnitsProps = new HashMap();
persistanceUnitsProps.put("Minutis", minutis);
persistanceUnitsProps.put("Minutis2", minutis2);
persistanceUnitsProps.put("Minutis3", minutis3);

Map props = new HashMap();
props.put("eclipselink.logging.level", "FINEST");
props.put("eclipselink.composite-unit.properties", persistanceUnitsProps);

EntityManagerFactory emf = Persistence.createEntityManagerFactory("persistenceUnit", props);
em = emf.createEntityManager();

这是我得到的输出:

run:
[EL Finest]: 2012-10-09 09:04:43.071--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--Begin predeploying Persistence Unit persistenceUnit; session file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit; state Initial; factoryCount 0
[EL Finest]: 2012-10-09 09:04:43.099--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--property=eclipselink.orm.throw.exceptions; default value=true
[EL Finest]: 2012-10-09 09:04:43.116--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--End predeploying Persistence Unit persistenceUnit; session file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit; state Predeployed; factoryCount 0
[EL Finer]: 2012-10-09 09:04:43.117--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--JavaSECMPInitializer - transformer is null.
[EL Finest]: 2012-10-09 09:04:43.117--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--Begin predeploying Persistence Unit persistenceUnit; session file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit; state Predeployed; factoryCount 0
[EL Finest]: 2012-10-09 09:04:43.117--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--End predeploying Persistence Unit persistenceUnit; session file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit; state Predeployed; factoryCount 1
[EL Finest]: 2012-10-09 09:04:43.125--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--Begin deploying Persistence Unit persistenceUnit; session file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit; state Predeployed; factoryCount 1
[EL Finest]: 2012-10-09 09:04:43.128--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--property=eclipselink.logging.level; value=FINEST
[EL Finest]: 2012-10-09 09:04:43.128--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--property=eclipselink.logging.level; value=FINEST
[EL Info]: 2012-10-09 09:04:43.13--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--EclipseLink, version: Eclipse Persistence Services - 2.3.0.v20110604-r9504
[EL Info]: 2012-10-09 09:04:43.138--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit login successful
[EL Warning]: 2012-10-09 09:04:43.146--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--The collection of metamodel types is empty. Model classes may not have been found during entity search for Java SE and some Java EE container managed persistence units.  Please verify that your entity classes are referenced in persistence.xml using either <class> elements or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element
[EL Finer]: 2012-10-09 09:04:43.146--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--The collection of metamodel types is empty. Model classes may not have been found during entity search for Java SE and some Java EE container managed persistence units.  Please verify that your entity classes are referenced in persistence.xml using either <class> elements or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element
[EL Finest]: 2012-10-09 09:04:43.147--SessionBroker(2079047885)--Thread(Thread[SwingWorker-pool-1-thread-1,5,main])--End deploying Persistence Unit persistenceUnit; session file:/C:/Users/Minutis/Documents/NetBeansProjects/JavaApplication4/build/classes/_persistenceUnit; state Deployed; factoryCount 1

编辑2:

我认为问题是持久性单元没有看到任何实体,虽然我使用类标签声明它们......对此有何帮助？

Answer 1

你遇到了什么错误？还是挂了？如果它挂起，您需要打破它并获取堆栈跟踪。

一般来说，您需要 ，这是指定子持久单元的唯一方法。您不需要将这些类放在 jar 文件中（尽管这是最简单的事情），您只需将 persistence.xml 文件放在 jar 中即可。