求助：hibernate 联合主键删除

联合主键的类能否用hql删除？

[color=red]为什么 HQL: delete CarDmMenuUser u where u.id.czryDm = ? 报

org.springframework.orm.hibernate3.HibernateQueryException: unexpected token: u near line 1, column 22 [delete CarDmMenuUser u where u.id.czryDm = ?]; nested exception is org.hibernate.hql.ast.QuerySyntaxError: unexpected token: u near line 1, column 22 [delete CarDmMenuUser u where u.id.czryDm = ?]

org.hibernate.hql.ast.QuerySyntaxError: unexpected token: u near line 1, column 22 [delete CarDmMenuUser u where u.id.czryDm = ?]

at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:63)

at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:215)

at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:127)

at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:83)

at org.hibernate.impl.SessionFactoryImpl.getQuery(SessionFactoryImpl.java:427)

at org.hibernate.impl.SessionImpl.getQueries(SessionImpl.java:884)

at org.hibernate.impl.SessionImpl.executeUpdate(SessionImpl.java:865)

at org.hibernate.impl.QueryImpl.executeUpdate(QueryImpl.java:89)

at com.cargis.web.dao.imp.DmMenuDaoImp$1.doInHibernate(DmMenuDaoImp.java:42)

at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:366)

at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:334)

at com.cargis.web.dao.imp.DmMenuDaoImp.deleteMenuByUser(DmMenuDaoImp.java:37)

at com.cargis.web.service.imp.CompanyServiceImp.deleteCompany(CompanyServiceImp.java:191)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:324)

at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)

at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:165)

at $Proxy1.deleteCompany(Unknown Source)

at com.cargis.web.test.CompanyServiceTest.main(CompanyServiceTest.java:38)

Caused by: line 1:22: unexpected token: u

at org.hibernate.hql.antlr.HqlBaseParser.deleteStatement(HqlBaseParser.java:242)

at org.hibernate.hql.antlr.HqlBaseParser.statement(HqlBaseParser.java:139)

at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:209)

... 19 more

Exception in thread "main" [/color]

我查了一下，hql基本用不了，是由于由于复合主键的xml定义不同，那么如果要进行复合主键的hql删除应该怎么做呢？？

哪位解决一下，万分感谢,急………………