【发布时间】：2011-06-27 22:02:39
【问题描述】：
我有一个在 tomcat 上运行的 Java EE 应用程序，它带有几个实体类并使用 eclipselink 2.1 和 jpa 2.0。 实体是 EmailNotification 和 EmailNotificationQueueRow。
@Entity
public class EmailNotification implements Serializable, IEntity<Integer> {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO, generator = "emailGen")
@SequenceGenerator(name = "emailGen", sequenceName = "SQ_EMAIL_NOTIFICATIONS", allocationSize=1)
@Basic(optional = false)
@Column(name = "EMAIL_ID")
private Integer emailId;
@Basic(optional = false)
@Column(name = "EMAIL_SUBJECT")
private String emailSubject;
@Basic(optional = false)
@Column(name = "EMAIL_BODY")
private String emailBody;
@Basic(optional = false)
@Column(name = "SENT_FROM_EMAIL_ADDRESS")
private String sentFromEmailAddress;
@Column(name = "SEND_TO_ORG_ID")
private Integer sendToOrgId;
@Column(name = "SEND_TO_EMAIL_ADDRESS")
private String sendToEmailAddress;
@Column(name = "CARBON_COPY_ORG_ID")
private Integer carbonCopyOrgId;
@Column(name = "CARBON_COPY_EMAIL_ADDRESS")
private String carbonCopyEmailAddress;
@Column(name = "BCC_ORG_ID")
private Integer bccOrgId;
@Column(name = "BCC_EMAIL_ADDRESS")
private String bccEmailAddress;
@Column(name = "PROJECT_ID")
private Integer projectId;
//getters and setters
}
@Entity
public class EmailNotificationQueueRow implements Serializable, IEntity<Integer> {
private static final long serialVersionUID = 1L;
@Id
@Basic(optional = false)
@Column(name = "EMAIL_QUEUE_ID")
private Integer emailQueueId;
@Basic(optional = false)
@Column(name = "EMAIL_ID")
private int emailId;
@Basic(optional = false)
@Column(name = "REQUEST_DATE")
@Temporal(TemporalType.TIMESTAMP)
private Date requestDate;
@Basic(optional = false)
@Column(name = "MESSAGE_SENT_FLAG")
private String messageSentFlag;
@Column(name = "MESSAGE_SENT_DATE")
@Temporal(TemporalType.TIMESTAMP)
private Date messageSentDate;
@JoinColumn(name = "EMAIL_ID", referencedColumnName = "EMAIL_ID", updatable = false, insertable = false)
@OneToOne(fetch = FetchType.LAZY)
private EmailNotification emailNotification;
//getters and setters
}
每当我将 emailNotification 变量的关系设置为 FetchType.LAZY（如上）时，该类就不会被编织。它已注册编织，但从未注册。
日志如下。 EmailNotification 实体是编织的，但不是 EmailNotificationQueueRow 实体。有什么想法吗？
[EL Config]: 2011-02-15 14:21:13.642--ServerSession(1191324)--Thread(Thread[main,5,main])
--The access type for the persistent class [class persistence.model.EmailNotification] is set to [FIELD].
[EL Config]: 2011-02-15 14:21:13.674--ServerSession(1191324)--Thread(Thread[main,5,main])
--The access type for the persistent class [class persistence.model.EmailNotificationQueueRow] is set to [FIELD].
[EL Config]: 2011-02-15 14:21:13.674--ServerSession(1191324)--Thread(Thread[main,5,main])
--The target entity (reference) class for the one to one mapping element [field emailNotification] is being defaulted to: class persistence.model.EmailNotification.
[EL Config]: 2011-02-15 14:21:13.689--ServerSession(1191324)--Thread(Thread[main,5,main])
--The alias name for the entity class [class persistence.model.EmailNotification] is being defaulted to: EmailNotification.
[EL Config]: 2011-02-15 14:21:13.72--ServerSession(1191324)--Thread(Thread[main,5,main])
--The alias name for the entity class [class persistence.model.EmailNotificationQueueRow] is being defaulted to: EmailNotificationQueueRow.
[EL Finer]: 2011-02-15 14:21:13.736--ServerSession(1191324)--Thread(Thread[main,5,main])
--Class [persistence.model.EmailNotification] registered to be processed by weaver.
[EL Finer]: 2011-02-15 14:21:13.799--ServerSession(1191324)--Thread(Thread[main,5,main])
--Class [persistence.model.EmailNotificationQueueRow] registered to be processed by weaver.
[EL Finest]: 2011-02-15 14:21:13.799--ServerSession(1191324)--Thread(Thread[main,5,main])
--End predeploying Persistence Unit iDMS_Persistence_Unit; session file:/C:/idms/build/web/WEB-INF/classes/_iDMS_Persistence_Unit; state Predeployed; factoryCount 1
[EL Finest]: 2011-02-15 14:21:13.908--ServerSession(1191324)--Thread(Thread[main,5,main])
--Begin weaver class transformer processing class [persistence/model/EmailNotification].
[EL Finest]: 2011-02-15 14:21:13.924--ServerSession(1191324)--Thread(Thread[main,5,main])
--Weaved persistence (PersistenceEntity) [persistence/model/EmailNotification].
[EL Finest]: 2011-02-15 14:21:13.924--ServerSession(1191324)--Thread(Thread[main,5,main])
--Weaved change tracking (ChangeTracker) [persistence/model/EmailNotification].
[EL Finest]: 2011-02-15 14:21:13.986--ServerSession(1191324)--Thread(Thread[main,5,main])
--Weaved fetch groups (FetchGroupTracker) [persistence/model/EmailNotification].
[EL Finest]: 2011-02-15 14:21:13.986--ServerSession(1191324)--Thread(Thread[main,5,main])
--End weaver class transformer processing class [persistence/model/EmailNotification].
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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_1_0.xsd">
<persistence-unit name="iDMS_Persistence_Unit" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/dms</jta-data-source>
<class>persistence.model.EmailNotification</class>
<class>persistence.model.EmailNotificationQueueRow</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="eclipselink.weaving" value="true"/>
<property name="eclipselink.cache.shared.default" value="false"/>
<property name="eclipselink.logging.level" value="FINEST"/>
</properties>
</persistence-unit>
</persistence>
更新
我正在使用 eclipselink javaagent 字符串来启动 tomcat。还有其他 OneToOne 映射在我的项目中被延迟加载，它们会被编织。它只有这一类（EmailNotificationQueueRow）没有被编织。
【问题讨论】：
-
如果将 JoinColumn 上的 `nullable` 或 OneToOne 上的
optional设置为 false 会改变什么，你能试试吗？另外，您使用的是哪个版本的 EclipseLink？
标签： java tomcat jpa eclipselink