hibernate过滤器

转自:http://42087743.iteye.com/blog/305219

Hibernate提供了对类使用预先定义的过滤器条件的功能,并提供了专门的Filter类.

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首先在需要过滤的model类的hbm.xml中:

 <classname="com.u2map.model.oneToOne.Pwd">
 <idname="id"column="id"type="integer">
 <generatorclass="foreign">
 <paramname="property">member</param>
 </generator>
 </id>
 <propertyname="pwd"column="pwd"type="string"></property>
 <one-to-onename="member"constrained="true"class="com.u2map.model.oneToOne.Member"></one-to-one>
 //过滤器配置
 <filtername="myFilter"condition="pwdlike:myFilterParam"/>
 </class>

 //过滤器配置
 <filter-defname="myFilter">
 <filter-paramname="myFilterParam"type="string"/>
 </filter-def>

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其次,在testcase中加上过滤:

 //使用过滤器
 session.enableFilter("myFilter").setParameter("myFilterParam","%a%");
 Queryquery=session.createQuery("fromPwdpwherep.id=:id");
 query.setParameter("id",3);
 Pwdmember=null;
 try{
 member=(Pwd)query.uniqueResult();
 }catch(HibernateExceptione){
 e.printStackTrace();
 }
 Assert.assertEquals(member.getId(),3);
 Assert.assertEquals(member.getPwd(),"abc");

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查看下hibernate生成的sql语句,证明filter已经加上:

 Hibernate:selectpwd0_.idasid1_,pwd0_.pwdaspwd1_fromPwdpwd0_wherepwd0_.pwdlike?andpwd0_.id=?