IllegalArgumentException：期待IdClass映射 [英] IllegalArgumentException: expecting IdClass mapping

问题描述

在部署我的应用程序期间，我发生该异常。我在我的应用程序中有很多类，我不知道必须在哪里放置 @IdClass ，这个异常意味着什么。
我正在使用Hibernate 4.1和JBoss AS 7.1 b / b
$ b

  12：10：23,761 INFO [org.hibernate.engine。 jdbc.internal.LobCreatorBuilder]（MSC服务线程1-5）HHH000424：禁用上下文LOB创建为createClob（）方法抛出错误：java.lang.reflect.InvocationTargetException 
 12：10：24,075错误[org.hibernate。 tool.hbm2ddl.SchemaExport]（MSC服务线程1-5）HHH000389：不成功：降序列hibernate_sequence 
 12：10：24076 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport]（MSC服务线程1-5）错误：序列hibernate_sequence不存在
 12：10：24,281错误[org.jboss.msc.service.fail]（MSC服务线程1-5）MSC00001：无法启动服务jboss.persistenceunit。kladr .ear / kladr-ejb-1.0-SNAPSHOT.jar＃primary：org.jboss.msc.service.StartException in service jboss.persistenceunit。kladr.ear / kladr-ejb-1.0-SNAPSHOT.jar＃primary：Failed在org.jboss.msc.service.ServiceControllerImpl $ StartTask.run（ServiceControll）启动服务
 erlmpl.java:1767）[jboss-msc-1.0.2.GA.jar：1.0.2.GA] 
在java.util.concurrent.ThreadPoolExecutor $ Worker.runTask（ThreadPoolExecutor.java:886）[rt .jar：1.6.0_35] 
 at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:908）[rt.jar：1.6.0_35] 
 at java.lang.Thread。运行（Thread.java:662）[rt.jar：1.6.0_35] 
导致：java.lang.IllegalArgumentException：期待IdClass映射
在org.hibernate.ejb.metamodel.AttributeFactory $ 3.resolveMember （AttributeFactory.java:878）
在org.hibernate.ejb.metamodel.AttributeFactory $ 4.resolveMember（AttributeFactory.java:915）
在org.hibernate.ejb.metamodel.AttributeFactory.determineAttributeMetadata（AttributeFactory。的java：在org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute（AttributeFactory.java:91 423）
）
。在org.hibernate.ejb.metamodel.MetadataContext.wrapUp（MetadataContext.java:214） 
 at org.hibernate.ejb.metamodel.MetamodelImpl.buildMetamodel（MetamodelIm pl.java:64）
。在org.hibernate.ejb.EntityManagerFactoryImpl<初始化>（EntityManagerFactoryImpl.java:91）
。在org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:904 ）维持在org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory（HibernatePersistence.java:73）
 org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory（Ejb3Configuration.java:889）
。在组织
。 jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory（PersistenceUnitServiceImpl.java:162）
在org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start（PersistenceUnitServiceImpl.java:85）
。在组织。 jboss.msc.service.ServiceControllerImpl $ StartTask.startService（ServiceControllerImpl.java:1811）[jboss-msc-1.0.2.GA.jar：1.0.2.GA] 
 at org.jboss.msc.service。 ServiceControllerImpl $ StartTask.run（ServiceControllerImpl.java:1746）[jboss-msc-1.0.2.GA.jar：1.0.2.GA] 
 ... 3 more 
  

解决方案

@IdClass 注释用于定义包含id的Class。即这在定义复合密钥的情况下通常使用。即多于一个属性的关键组合。
如果是这样，那么这就是我们的做法。看看下面的例子..我们将类定义为 IdClass ，并使用 @Id 来定义varrious Id 为此 IdClass`。

示例：

  @Entity 
 @IdClass（ AssignedRoleId.class）
 public class AssignedRole 
 {
 @Id 
 @ManyToOne 
 private User userId; 
 
 @Id 
 @ManyToOne 
私人角色roleId; 
 
私人日期dateAssigned; 
} 
  

希望这会有所帮助。

During deploying my app I occurs on that exception. I have a lot of class in my app and I dont know where I must to place @IdClass and what does this exception mean anyway. I am using Hibernate 4.1 and JBoss AS 7.1

12:10:23,761 INFO  [org.hibernate.engine.jdbc.internal.LobCreatorBuilder] (MSC service thread 1-5) HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
12:10:24,075 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (MSC service thread 1-5) HHH000389: Unsuccessful: drop sequence hibernate_sequence
12:10:24,076 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (MSC service thread 1-5) ERROR: sequence "hibernate_sequence" does not exist
12:10:24,281 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC00001: Failed to start service jboss.persistenceunit."kladr.ear/kladr-ejb-1.0-SNAPSHOT.jar#primary": org.jboss.msc.service.StartException in service jboss.persistenceunit."kladr.ear/kladr-ejb-1.0-SNAPSHOT.jar#primary": Failed to start service
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_35]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_35]
    at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_35]
Caused by: java.lang.IllegalArgumentException: expecting IdClass mapping
    at org.hibernate.ejb.metamodel.AttributeFactory$3.resolveMember(AttributeFactory.java:878)
    at org.hibernate.ejb.metamodel.AttributeFactory$4.resolveMember(AttributeFactory.java:915)
    at org.hibernate.ejb.metamodel.AttributeFactory.determineAttributeMetadata(AttributeFactory.java:423)
    at org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute(AttributeFactory.java:91)
    at org.hibernate.ejb.metamodel.MetadataContext.wrapUp(MetadataContext.java:214)
    at org.hibernate.ejb.metamodel.MetamodelImpl.buildMetamodel(MetamodelImpl.java:64)
    at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:91)
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889)
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73)
    at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:162)
    at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
    ... 3 more

解决方案

@IdClass annotation is used to define the Class that contains the id. i.e. This is generally used in case defining a compound key. i.e. a key composite of more than one attribute. If that is the case, than this is how we do. take a look at following example.. we define a class as IdClass and use @Id's to define varrious Ids for thisIdClass`.

Example :

@Entity
@IdClass(AssignedRoleId.class)
public class AssignedRole
{
  @Id
  @ManyToOne
  private User userId;

  @Id
  @ManyToOne  
  private Role roleId;

  private Date dateAssigned;
}

Hope this helps.

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