之前有写过oracle 结合hibernate支持拼音排序,优化一下,之前写的有一个小的bug,就是在重写了hibernate 的Order接口后,出现所有的字段都通过拼音排序,
导致时间、数字类型的排序都乱了,加一个判断,之正对string类型做拼音排序
原文地址:http://blog.csdn.net/dracotianlong/article/details/8637561
修改后的代码如下
package com.sencloud.dh.core.command; import org.hibernate.Criteria; import org.hibernate.HibernateException; import org.hibernate.criterion.CriteriaQuery; import org.hibernate.criterion.Order; import org.hibernate.type.Type; /** * 实现Oracle数据库中文字段按照拼音排序问题 <一句话功能简述> <功能详细描述> * * @author xutianlong * @version [版本号, Mar 5, 2013] * @see [相关类/方法] * @since [产品/模块版本] */ public class OracleOrder extends Order { private String propertyName; private boolean ascending; protected OracleOrder(String propertyName, boolean ascending) { super(propertyName, ascending); this.propertyName = propertyName; this.ascending = ascending; } /** * 只考虑按一个字段排序的情况 */ public String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery) throws HibernateException { String[] columns = criteriaQuery.getColumnsUsingProjection(criteria, propertyName); Type propertyType= criteriaQuery.getTypeUsingProjection(criteria, propertyName);
//只有string类型支持拼音排序 if("string".equals(propertyType.getName())) { return " nlssort(" + columns[0] + ",'NLS_SORT=SCHINESE_PINYIN_M') " + (ascending ? "" : "desc"); } else { return super.toSqlString(criteria, criteriaQuery); } } public static OracleOrder getOrder(String propertyName, boolean ascending) { return new OracleOrder(propertyName, ascending); } }