休眠，多对一 not-found=“ignore”，条件添加限制，列表，- 无法解析属性

问：

我的表包含指向不存在的记录的链接。为了提取链接断开的对象，我使用了 not-found=“ignore”：

    <class name="pattern" table="PATTERN">
        <id name="un" type="long">
            <column name="UN" precision="10" scale="0" />
            <generator class="native"/>
        </id>
        <many-to-one class="Workplace" fetch="select" lazy="false" name="workplace" not-found="ignore">
            <column name="UN" not-null="true"/>
        </many-to-one>
    ...
    </class>

    <class name="Workplace" table="WORKPLACE">
        <id name="un" type="long">
            <column name="UN" precision="10" scale="0" />
            <generator class="assigned"/>
        </id>
    ...
    </class>
   

已成功接收对象。但是搜索 workplace.un 字段出现错误：

Criteria crit;
...
crit.add(Restrictions.eq("workplace.un", un));
crit.list();

错误：

could not resolve property: workplace.un of: pattern
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:285)
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:230)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:551)
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:152)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708)
    at 

是否有可能修复搜索？

如果 remove not-found=“ignore”，则搜索有效，但无法检索链接断开的对象。