Restrictions----用法

----------------------------------------方法说明

--------------------------QBC常用限定方法-----------------------------------
Restrictions.eq --------------------------------------> equal,等于.

Restrictions.ne --------------------------------------> not-equals,不等于

Restrictions.allEq -----------------------------------> 参数为Map对象,使用key/value进行多个等于的比对,相当于多个Restrictions.eq的效果

Restrictions.gt ---------------------------------------> great-than > 大于

Restrictions.ge --------------------------------------> great-equal >= 大于等于

Restrictions.lt ----------------------------------------> less-than, < 小于

Restrictions.le ---------------------------------------> less-equal <= 小于等于

Restrictions.between ------------------------------> 对应SQL的between子句

Restrictions.like -------------------------------------> 对应SQL的LIKE子句

Restrictions.in ---------------------------------------> 对应SQL的in子句

Restrictions.and -------------------------------------> and 关系

Restrictions.or ---------------------------------------> or 关系

Restrictions.isNull ----------------------------------> 判断属性是否为空,为空则返回true

Restrictions.isNotNull -----------------------------> 与isNull相反

Restrictions.sqlRestriction -----------------------> SQL限定的查询

Order.asc ---------------------------------------------> 根据传入的字段进行升序排序

Order.desc -------------------------------------------> 根据传入的字段进行降序排序

MatchMode.EXACT -------------------------------> 字符串精确匹配.相当于"like 'value'"

MatchMode.ANYWHERE -----------------------> 字符串在中间匹配.相当于"like '%value%'"

MatchMode.START ------------------------------> 字符串在最前面的位置.相当于"like 'value%'"

MatchMode.END ---------------------------------> 字符串在最后面的位置.相当于"like '%value'"

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeSet;
 import org.hibernate.Criteria;
 import org.hibernate.Hibernate;
 import org.hibernate.criterion.MatchMode;
 import org.hibernate.criterion.Order;
 import org.hibernate.criterion.Restrictions;
 import com.happy.dao.BaseHibernateDAO;
 import com.happy.entity.AwardNums;
 import com.happy.test.util.HandleList;
 public class Restriction extends BaseHibernateDAO {
 public static void main(String[] args) {
 Restriction query = new Restriction();
 query.query();
 }
 @SuppressWarnings("unchecked")
 public void queryAlias() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 获取别名：eg：this
 System.out.println(criteria.getAlias());
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryOrder() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 criteria.addOrder(Order.desc("id"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryBetween() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 第一个参数是属性，第一个是小的数值，第三个是大的数值
 criteria.add(Restrictions.between("id", 17720820, 17720830));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryIdEq() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // id=17720820
 criteria.add(Restrictions.idEq(17720820));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryIlike() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 忽略大小写，05结束的
 criteria.add(Restrictions.ilike("numbers", "05", MatchMode.END));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryLike() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 05介绍的
 criteria.add(Restrictions.like("numbers", "05", MatchMode.END));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryLike2() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 05开始的
 criteria.add(Restrictions.like("numbers", "05%"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryInArray() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // new int[]错误的
 Integer[] arrInt = new Integer[] { 17720808, 17720809, 17720810 };
 criteria.add(Restrictions.in("id", arrInt));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryInList() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // new int[]错误的
 List<Integer> list = new ArrayList<Integer>();
 list.add(17720808);
 list.add(17720809);
 list.add(17720810);
 criteria.add(Restrictions.in("id", list));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryInSet() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // new int[]错误的
 Set<Integer> set = new TreeSet<Integer>();
 set.add(17720808);
 set.add(17720809);
 set.add(17720810);
 criteria.add(Restrictions.in("id", set));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryInMap() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 Map<String, Integer> map = new HashMap<String, Integer>();
 // String不能命名重复，否者会过滤重复的
 map.put("1", 17720808);
 map.put("2", 17720809);
 map.put("3", 17720810);
 criteria.add(Restrictions.in("id", map.values()));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryIsEmpty() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // Property path [com.happy.entity.AwardNums.issue] does not reference a
 // collection
 criteria.add(Restrictions.isEmpty("issue"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryIsNotEmpty() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // Property path [com.happy.entity.AwardNums.issue] does not reference a
 // collection
 criteria.add(Restrictions.isNotEmpty("issue"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryIsNull() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // this_.id is null
 criteria.add(Restrictions.isNull("id"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryIsNotNull() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // this_.id is not null
 criteria.add(Restrictions.isNotNull("id"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void querySizeEq() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // Unknown collection role: com.happy.entity.AwardNums.id
 criteria.add(Restrictions.sizeEq("id", 15));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void querySqlRestriction() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 String alias = criteria.getAlias();
 // _很重要的
 criteria.add(Restrictions.sqlRestriction(alias + "_.id < 17720812"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void querySqlRestrictionEasy() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // {alias}.id
 criteria.add(Restrictions.sqlRestriction("{alias}.id < 17720812"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void querySqlRestrictionType() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // lower(this_.numbers) like lower(?)
 criteria.add(Restrictions
 .sqlRestriction("lower({alias}.numbers) like lower(?)", "%09",
 Hibernate.STRING));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryConjunction() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 永真情况下查询
 criteria.add(Restrictions.conjunction());
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryDisjunction() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 永真情况下查询
 criteria.add(Restrictions.disjunction());
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryNaturalId() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 永真情况下查询
 criteria.add(Restrictions.naturalId());
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryCompare() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // this_.id=? eq&&ne this_.id<>?
 criteria.add(Restrictions.eq("id", 17719845));
 // this_.id>=? ge&&le this_.id<=?
 criteria.add(Restrictions.ge("id", 17719845));
 // this_.id>? gt&&lt this_.id<?
 criteria.add(Restrictions.gt("id", 17719845));
 // this_.id<=?
 criteria.add(Restrictions.le("id", 17719845));
 // this_.id<?
 criteria.add(Restrictions.lt("id", 17719845));
 // this_.id<>?
 criteria.add(Restrictions.ne("id", 17719845));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryCompareProperty() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // this_.issue=this_.numbers eq&&ne this_.id<>?
 criteria.add(Restrictions.eqProperty("id", "issue"));
 // this_.id>=this_.issue ge&&le this_.id<=?
 criteria.add(Restrictions.geProperty("id", "issue"));
 // this_.id>this_.issue gt&&lt this_.id<?
 criteria.add(Restrictions.gtProperty("id", "issue"));
 // this_.id<=this_.issue
 criteria.add(Restrictions.leProperty("id", "issue"));
 // this_.id<this_.issue
 criteria.add(Restrictions.ltProperty("id", "issue"));
 // this_.id<>this_.issue
 criteria.add(Restrictions.neProperty("id", "issue"));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryOr() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 或者查询
 criteria.add(Restrictions.or(Restrictions.eq("id", 17719845),
 Restrictions.eq("id", 17719846)));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void queryAnd() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 并且查询
 criteria.add(Restrictions.and(Restrictions.eq("id", 17719845),
 Restrictions.eq("issue", "2011100")));
 HandleList.print(criteria.list());
 }
 @SuppressWarnings("unchecked")
 public void query() {
 Criteria criteria = getSession().createCriteria(AwardNums.class);
 // 排除查询
 criteria.add(Restrictions.not(Restrictions.eq("id", 17719841)));
 HandleList.print(criteria.list());
 }
 }