我在项目中使用EclipseLink JPA作为ORM和Web逻辑10.3作为应用程序服务器。一切工作正常,直到我有数据刷新的错误。这里是我的一个实体表行被更新为新的值,但我的实体管理器或JPA没有选择该值。为此,我们依赖Lite重新启动服务器。然后它拿起价值。如何在不重新启动服务器的情况下刷新更新的实体数据
这是我的persistence.xml文件,这里是我在我的课堂上使用实体管理器的方式。
<persistence-unit name="BasePersistenceUnit" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/CTH_DS</jta-data-source>
<class>org.test.partyrequest.model.dataobject.RqstTrc</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="eclipselink.target-server" value="WebLogic_10" />
<!-- Logging level is set to INFO, Need to change in Production -->
<property name="eclipselink.logging.level" value="FINE" />
<property name="eclipselink.persistence-context.flush-mode" value="COMMIT" />
<property name="eclipselink.persistence-context.close-on-commit" value="true" />
<property name="eclipselink.cache.shared.default" value="false" />
</properties>
</persistence-unit>
SPRING JPA XML文件
<context:load-time-weaver aspectj-weaving="on" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="BasePersistenceUnit" />
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter" />
<bean id="transactionManager" class="org.springframework.transaction.jta.WebLogicJtaTransactionManager" />
<!-- ========================= BUSINESS OBJECT DEFINITIONS ========================= -->
<!-- Instruct Spring to perform declarative transaction management automatically on annotated classes. -->
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
<!-- Post-processor to perform exception translation on @Repository classes
(from native exceptions such as JPA PersistenceExceptions to Spring's DataAccessException hierarchy).
-->
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
我的实体CALSS
@Entity
@Table(name = “PRTY_RQST”) 公共类PrtyRqst实现Serializable {
private static final long serialVersionUID = -4679712398918736694L;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "PRTY_RQST_PRTYRQSTID_GENERATOR")
@SequenceGenerator(name = "PRTY_RQST_PRTYRQSTID_GENERATOR", allocationSize = 1, sequenceName = "PRTY_RQST_SEQ")
@Column(name = "PRTY_RQST_ID")
private Long prtyRqstId;
@Column(name = "CHLD_RQST_IND")
private String chldRqstInd;
@Column(name = "PARNT_PRTY_RQST_ID")
private BigDecimal parntPrtyRqstId;
@Column(name = "PROCES_REFR")
private String procesRefr;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "RQST_DT_TM")
private Date rqstDtTm;
@Column(name = "UPDT_BY")
private String updtBy;
// bi-directional many-to-one association to PrtyKey
@OneToMany(mappedBy = "prtyRqst", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
private List<PrtyKey> prtyKeys;
// bi-directional many-to-one association to PrtyRqstHist
@OneToMany(mappedBy = "prtyRqst", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@OrderBy("rqstDtTm DESC")
private List<PrtyRqstHist> prtyRqstHists;
@OneToOne(mappedBy = "prtyRqst", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
private RqstPayload rqstPayload;
// bi-directional many-to-one association to RqstTrc
@OneToMany(mappedBy = "prtyRqst", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
private List<RqstTrc> rqstTrcs;
// bi-directional many-to-one association to AddtnRqstInfo
@OneToMany(mappedBy = "prtyRqst", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
private List<AddtnRqstInfo> addtnRqstInfos;
// bi-directional many-to-one association to BusnApplc
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.REFRESH)
@JoinColumn(name = "BUSN_APPLC_ID")
private BusnApplc busnApplc;
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.REFRESH)
@JoinColumn(name = "INTN_PROCES_TYP_ID")
private IntnProcesTyp intnProcesTyp;
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.REFRESH)
@JoinColumn(name = "INTN_STATS_ID")
private IntnStat intnStat;
@Column(name = "ORCHESTRATION_ID")
private String orchestrationId;
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.REFRESH)
@JoinColumn(name = "ALLW_CHNL_ID")
private AllwChnl allwChnl;
// bi-directional many-to-one association to RqstTyp
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.REFRESH)
@JoinColumn(name = "RQST_TYP_ID")
private RqstTyp rqstTyp;
@Column(name = "TRACK_RQST_IND")
private String trackRqstInd;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "SUBMIT_DT_TM")
private Date submitDtTm;
@Temporal(TemporalType.DATE)
@Column(name = "EFFECTIVE_DT")
private Date effectiveDt;
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "RQST_CREATE_DT_TM")
private Date rqstCreateDtTm;
在我的DAO IMPL类我有this.persist(prtyRqstDO);
@Transactional(readOnly = true, propagation=Propagation.REQUIRED)
private PartyRequestBO createRequest(PartyRequestBO partyRequestBO, boolean isParent) throws RuntimeException {
if (log.isDebugEnabled()) {
log.debug("Enter: PartyRequestsDAOImpl:createRequest()");
}
partyRequestBO.setOrchestrationID(generateOrchestrationId());
PrtyRqst prtyRqstDO = PartyRequestEntityMapper.partyRequestMapper(partyRequestBO, isParent, true);
try {
this.persist(prtyRqstDO);
partyRequestBO.setRequestIdentifier(prtyRqstDO.getPrtyRqstId());
} catch (Exception e) {
if(log.isDebugEnabled()) {
log.debug("PartyRequestsDAOImpl:createRequest : " + PartyRequestConstants.UNABLE_TO_INSERT, e);
}
throw new PartyRequestDataException(PartyRequestConstants.UNABLE_TO_INSERT, e);
}
if (log.isDebugEnabled()) {
log.debug("Exit: PartyRequestsDAOImpl:createRequest()");
}
return partyRequestBO;
}
@Transactional(readOnly = true, propagation=Propagation.REQUIRED)
public void persist(T entity) {
if (log.isDebugEnabled()) {
log.debug("Enter: BaseDAO:persist() : " + entity);
}
this.getEntityManager().persist(entity);
if (log.isDebugEnabled()) {
log.debug("Exit: BaseDAO:persist()");
}
}
public EntityManager getEntityManager() {
if (log.isDebugEnabled()) {
log.debug("Enter: BaseDAO:getEntityManager() : " + this.entityManager);
}
return this.entityManager;
}
这里的问题是,如果我通过后端更新表中的行之一,我的应用程序容器没有选择更改。
任何一个可以告诉我吗?先谢谢你。
编辑:
谢谢你们两位。我根据你的意见修改了下面的代码行。
this.entityManager.clear();
this.entityManager.close();
//this.getEntityManager().refresh(entityManager);
在这里,我可以得到更新值,我已经通过后端与重新启动服务器完成它。但问题是它保存了所有改变的值。
例如我已将值更改为FulOrderWSA它正在工作。改为FulorderWSB它再次工作。现在我已经尝试了FulOrderWSZ它没有工作(DB值是FulorderWSB)。
最后我在这里尝试了旧值,这是FulorderWSA根据数据库它不应该工作,但它为我工作。我注意到它在这里保存了所有数据库更改的值。
如何得到这个。我已经使用了清晰和关闭的entityManager。谁可以帮我这个事。
谢谢。
维杰。
你是如何从数据库中提取实体的,你可以用相关的代码更新文章。 – 2013-05-02 07:54:29
更新了代码片段。 – user1268890 2013-05-02 08:51:28