发出简单的"发现"对一个实体的操作,Eclipselink抛出一个NPE:
java.lang.NullPointerException: null
at org.eclipse.persistence.internal.jpa.CMP3Policy.createPrimaryKeyFromId(CMP3Policy.java:224)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.findInternal(EntityManagerImpl.java:808)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:730)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:599)
该实体使用多租户和每个租户的策略。
答案 0 :(得分:1)
确保您在实体管理器上设置租户属性,如下所示:
String tenant = // ...
EntityManager em = // ...
em.setProperty(PersistenceUnitProperties.MULTITENANT_PROPERTY_DEFAULT, tenant);