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

时间：2012-10-08 19:57:20

标签： persistence eclipselink

我的问题几乎在这个帖子中回答：

EclipseLink, EntityManager with two persistence units needed

但是我使用一个persistence.xml文件来声明3个持久性单元，它运行正常。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。如果没有<jar-file>标记，有没有办法做到这一点。如果不是，有人能举例说明如何用一个持久性单元制作一个jar文件吗？

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，代码停止在createEntity行和就是这样。

的persistence.xml 

<?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>

这就是EntityManager的创建方式：

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：

我认为问题在于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......对此有任何帮助吗？

2 个答案:

答案 0 :(得分：0)

你得到什么错误？还是挂着？如果它挂起，你需要打破它并获得堆栈跟踪。

通常，您需要，这是指定子持久性单元的唯一方法。你不需要将这些类放在jar文件中（虽然这是最简单的事情），你可以在jar中使用persistence.xml文件。

答案 1 :(得分：0)

我遇到了同样的问题，采用了类似的方法，但我仍然坚持下一步。我确实通过在另一个项目中创建实体然后将它们粘贴到主项目中来解决这个问题，最后将实体包含在persistance单元中（我将其预定义到persistence.xml中。我在执行时重新定义数据库）。之后，实体得到了认可，但该单位“混合”了一点。

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