Question

我想从具有特定sql语句的列表中删除对象示例：包含消息列表的档案。

我希望在删除邮件后，列表会自动刷新。情况确实如此，但是当我使用远程Java应用程序启动应用程序时，我必须使用实体管理器手动刷新档案。我想知道为什么在我想调试代码时会有这样的差异。

我使用weblogic作为应用服务器。

感谢。

BenefitDossier dossier = dossierRepo.getDossierByDossierId(dossierIdentifier, CREATED);

// perform the removing
messageRepository.removeOrUpdateMessagesFromDossier(dossier.getDossierId(), COMPLETENESS_RECOGNITION);

dossierRepo.refresh(dossier); // need to add this statement only in debug mode

return dossier;


@PersistenceContext(unitName = "dmb-jta")
protected EntityManager em;

public void removeOrUpdateMessagesFromDossier(DisBenMessageCategory category, String dossierNr) {
    if (category.preserveHistory()) {
        updateMessagesRemovalTimestamp(category, dossierNr);
    } else {
        removeMessages(category, dossierNr);
    }
}

private void removeMessages(DisBenMessageCategory category, String dossierNr) {
    StringBuilder updateStmt = new StringBuilder();
    updateStmt.append("DELETE FROM DisBenMessage msg ");
    updateStmt.append("WHERE msg.benefitDossier.dossierId = :dossierNr ");
    updateStmt.append("AND msg.category = :category ");

    Query query = em.createQuery(updateStmt.toString());
    query.setParameter("dossierNr", dossierNr);
    query.setParameter("category", category);

    int updateCount = query.executeUpdate();
    LOG.debug("Deleted " + updateCount + " messages.");
}

<persistence-unit name="dmb-jta" transaction-type="JTA">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <jta-data-source>jdbc/DisabilityBenefitsDS</jta-data-source>
    <properties>
        <property name="eclipselink.logging.level" value="INFO"/>
        <property name="eclipselink.logging.exceptions" value="true"/>
        <property name="eclipselink.logging.logger" value="be.cm.comps.logman.impl.LogManagerSessionLog"/>
        <property name="eclipselink.target-server" value="Weblogic_10"/>
        <property name="eclipselink.logging.parameters" value="true"/>
        <property name="eclipselink.cache.shared.default" value="false" />
        <!--  Global eclipselink Cache -->
        <property name="eclipselink.cache.type.default" value="NONE" />


        <!--  Specific Entities eclipselink Cache -->
        <property name="eclipselink.cache.type.ContactInfoType" value="Full" />
        <property name="eclipselink.cache.type.ContactPointServiceType" value="Full" />
        <property name="eclipselink.cache.type.Day" value="Full" />         
        <property name="eclipselink.cache.type.Federation" value="Full" />
        <property name="eclipselink.cache.type.Language" value="Full" />                                

    </properties>
</persistence-unit>

调试模式事务管理方式不同

0 个答案: