Question

我遇到了在启用EHcache的情况下从Hibernate获取对象的问题。这个

这是我关注类

的hbm.xml片段

<class name="FinanceFacility" table="FIN_FACILITY" discriminator-value="FinanceFacility">
    <cache usage="read-write" region="financeFacilityCache"/>
    <set name="borrowers" access="property" table="FIN_FACILITY_BORROWERS" fetch="subselect" lazy="false" cascade="all,delete-orphan">
        <cache usage="read-write" region="financeFacilityCache"/>
        <key column="FIN_FACILITY_ID"/>
        <element column="GROUP_COMPANY_ID" type="GuidType"/>
    </set>
</class>

这是通过Hibernate进行的API调用。

@Override
@Cacheable(cacheName = "assignableFacilityCache") // NOSONAR
public List<FinanceFacility> getAllWhereInventoryCanBeAssigned()
{
    LOG.info("Getting all facilities where inventory can be assigned...");

    List<QueryParam> params = new ArrayList<QueryParam>();

    List<FinanceFacility> facilities = getMultipleEntities("FinanceFacility.findWhereInventoryCanBeAssigned", params);

    // Set the parents
    for (FinanceFacility facility : facilities)
    {
        facility.setParentFacility(getPathTo(facility.getParentRef()));
    }

    LOG.info("getAllFacilities() found " + facilities.size() + " Facility(s)");
    return facilities;
}

在正常情况下，运行正常。但在某些并发访问期间，我得到以下错误

Caused by: javax.persistence.PersistenceException: org.hibernate.HibernateException: Unable to resolve owner of loading collection [[com.xxx.yyy.internal.model.facilities.FinanceFacility.borrowers#1a21f938e94f4ba2a36a3e973845175e]] for second level caching
    at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1389) ~[hibernate-entitymanager-3.6.10.Final.jar:3.6.10.Final]
    at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1317) ~[hibernate-entitymanager-3.6.10.Final.jar:3.6.10.Final]
    at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:255) ~[hibernate-entitymanager-3.6.10.Final.jar:3.6.10.Final]
    at com.xxx.yyy.repository.database.AbstractEntityRepository.getMultipleEntities(AbstractEntityRepository.java:65) ~[classes:na]

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Answer 1

找到它

我必须删除fetch =＆＃34; subselect＆＃34;从hbm映射中的设置中获取它的工作原理。我用批量大小替换它以保持优化。

Hibernate EHCache集合＆＃34;无法解析加载集合的所有者＆＃34;

1 个答案: