Criteria criteria = session.createCriteria(User.class);
// 鏌ヨuser鎵鏈夋瑒浣?/span>
List users = criteria.list();
Iterator iterator = users.iterator();
System.out.println("id \t name/age");
while(iterator.hasNext()) {
User user = (User) iterator.next();
System.out.println(user.getId() +
" \t " + user.getName() +
"/" + user.getAge());
}
// 鏌ヨuser鎵鏈夋瑒浣?/span>
List users = criteria.list();
Iterator iterator = users.iterator();
System.out.println("id \t name/age");
while(iterator.hasNext()) {
User user = (User) iterator.next();
System.out.println(user.getId() +
" \t " + user.getName() +
"/" + user.getAge());
}
Hibernate瀵﹂殯涓婁嬌鐢ㄤ互涓嬬殑SQL渚嗘煡瑭㈣硣鏂欏韓錛?br />
select this_.id as id0_, this_.name as name0_0_, this_.age as age0_0_ from user this_
Criteria瀵﹂殯涓婂彧鏄嬪鍣紝濡傛灉鎯寵璦畾鏌ヨ姊濅歡錛屽墖瑕佷嬌鐢╝dd()鏂規硶鍔犲叆Restrictions鐨勬浠墮檺鍒訛紝渚嬪鏌ヨage澶ф柤20涓斿皬鏂?0鐨勮硣鏂欙細
Criteria criteria = session.createCriteria(User.class);
criteria.add(Restrictions.gt("age", new Integer(20)));
criteria.add(Restrictions.lt("age", new Integer(40)));
List users = criteria.list();
criteria.add(Restrictions.gt("age", new Integer(20)));
criteria.add(Restrictions.lt("age", new Integer(40)));
List users = criteria.list();
鎮ㄤ篃鍙互浣跨敤閭忚集緄勫悎渚嗛茶鏌ヨ錛屼緥濡傜祼鍚坅ge絳夋柤錛坋q錛?0鎴栵紙or錛塧ge鐐虹┖錛坕sNull錛夌殑姊濅歡錛?
Criteria criteria = session.createCriteria(User.class);
criteria.add(Restrictions.or(
Restrictions.eq("age", new Integer(20)),
Restrictions.isNull("age")
));
List users = criteria.list();
criteria.add(Restrictions.or(
Restrictions.eq("age", new Integer(20)),
Restrictions.isNull("age")
));
List users = criteria.list();
涔熷彲浠ヤ嬌鐢╯qlRestriction()鏂規硶渚嗘彁渚汼QL瑾炴硶浣滈檺瀹氭煡瑭紝渚嬪鏌ヨname浠ater闁嬮牠鐨勮硣鏂欙細
Criteria criteria = session.createCriteria(User.class);
criteria.add(Restrictions.sqlRestriction("{alias}.name LIKE (?)", "cater%", Hibernate.STRING));
List users = criteria.list();
criteria.add(Restrictions.sqlRestriction("{alias}.name LIKE (?)", "cater%", Hibernate.STRING));
List users = criteria.list();
鍏朵腑alias灝囪鏇挎彌鐐鴻垏User欏炲垾鐩擱棞鐨勫悕紼憋紝鑰?灝囪鏇挎彌鐐篶ater%錛屼篃灝辨槸絎簩鍊嬪弮鏁告墍鎻愪緵鐨勫鹼紝鍦⊿QL鎾板鏅傦紝涓嶅繀鍐嶅WHERE錛屽鏋滄湁澶氬嬫煡瑭㈡浠訛紝渚嬪BETWEEN瀛愬彞鐨勬煡瑭紝鍓囧彲浠ュ涓嬶細
Criteria criteria = session.createCriteria(User.class);
Integer[] ages = {new Integer(20), new Integer(40)};
Type[] types = {Hibernate.INTEGER, Hibernate.INTEGER};
criteria.add(Restrictions.sqlRestriction("{alias}.age BETWEEN (?) AND (?)", ages, types));
List users = criteria.list();
Integer[] ages = {new Integer(20), new Integer(40)};
Type[] types = {Hibernate.INTEGER, Hibernate.INTEGER};
criteria.add(Restrictions.sqlRestriction("{alias}.age BETWEEN (?) AND (?)", ages, types));
List users = criteria.list();
Restrictions鐨勫咕鍊嬪父鐢ㄩ檺瀹氭煡瑭㈡柟娉曞涓嬭〃鎵紺猴細
| 鏂規硶 | 瑾槑 |
| Restrictions.eq | 絳夋柤 |
| Restrictions.allEq | 浣跨敤Map錛屼嬌鐢╧ey/value閫茶澶氬嬬瓑鏂肩殑姣斿皪 |
| Restrictions.gt | 澶ф柤 > |
| Restrictions.ge | 澶ф柤絳夋柤 >= |
| Restrictions.lt | 灝忔柤 < |
| Restrictions.le | 灝忔柤絳夋柤 <= |
| Restrictions.between | 灝嶆噳SQL鐨凚ETWEEN瀛愬彞 |
| Restrictions.like | 灝嶆噳SQL鐨凩IKE瀛愬彞 |
| Restrictions.in | 灝嶆噳SQL鐨刬n瀛愬彞 |
| Restrictions.and | and闂滀總 |
| Restrictions.or | or闂滀總 |
| Restrictions.sqlRestriction | SQL闄愬畾鏌ヨ |
==============
Hibernate Criteria 鍏寵仈鏌ヨ
鍓嶉潰璁蹭簡Criteria鐪嬭搗鏉ユ瘮HQL欏虹溂澶氫簡錛屾帴鐫緇х畫銆?br />
濡傛灉姣忎釜緹庡コ閮芥湁鑷繁鐨勫鎴瘋祫婧愶紙涓嶈鎯蟲浜嗭紒錛夛紝閭ｄ箞闇瑕佹煡璇㈡嫢鏈夊鎴稧ates鐨勭編濂蟲庝箞鍔烇紵
浣跨敤Criteria鍙互鏈変袱縐嶆柟娉曪細
1錛?br />
DetachedCriteria beautyCriteria = DetachedCriteria.forClass(Beauty.class).createCriteria("customers");
beautyCriteria.add(Restrictions.eq("name", "Gates")):
2錛?br />
DetachedCriteria beautyCriteria = DetachedCriteria.forClass(Beauty.class).createAlias("customers", "c");
beautyCriteria.add(Restrictions.eq("c.name", "Gates")):
鎺ョ潃鏈変簡鏂扮殑瑕佹眰錛屽勾綰お澶х殑緹庡コ涓嶈錛岃繕鏄煡鎵炬嫢鏈夊鎴稧ates鐨勶紝鏉′歡濡備笅錛?br />
DetachedCriteria beautyCriteria = DetachedCriteria.forClass(Beauty.class, "b").;
DetachedCriteria customerCriteria = beautyCriteria.createAlias("customers", c");
beautyCriteria.add(Restrictions.le("b.age", new Long(20))):
customerCriteria.add(Restrictions.eq("c.name", "Gates")):
鍏充簬Criteria鏇磋緇嗙殑璧勬枡錛孒ibernate鐨勬簮浠ｇ爜鍜屾祴璇曟槸鏈濂界殑鏂囨。銆?br />
Criteria鐨勭己鐐癸紵DBA寰堢敓姘旓紝鍚庢灉寰堜弗閲嶃?/p>