org.hibernate.QueryException: could not resolve property: address of:

Hibernate: select count(*) as y0_ from test.course this_
org.hibernate.QueryException: could not resolve property: address of: com.example.domain.Course
    at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:67)
    at org.hibernate.persister.entity.AbstractPropertyMapping.toType(AbstractPropertyMapping.java:61)
    at org.hibernate.persister.entity.AbstractEntityPersister.getSubclassPropertyTableNumber(AbstractEntityPersister.java:1392)
    at org.hibernate.persister.entity.BasicEntityPropertyMapping.toColumns(BasicEntityPropertyMapping.java:54)
    at org.hibernate.persister.entity.AbstractEntityPersister.toColumns(AbstractEntityPersister.java:1367)

提示信息的意思是：在Course类映射中没有address这一属性，而却在查询语句中使用了address属性！