銆銆Hibernate3鐨勮繃婊ゅ櫒鍙互榪涜棰勫畾涔夛紝騫跺彲緇戝畾鍦ㄧ被鍜岄泦鍚堝眰銆傞偅涔堜粈涔堝彨棰勫畾涔夎繃婊ゅ櫒鍛紵灝辨槸鍙互瀹氫箟璞?where"瀛愬彞鐨勯檺鍒舵у瓙鍙ワ紝浣嗚繖浜涘瓙鍙ユ槸鐩稿綾誨拰涓嶅悓闆嗗悎鐨勫厓绱犵殑銆傞櫎浜嗚繖浜涜繃婊ゅ櫒鏉′歡鍙互琚弬鏁板寲澶栥傜郴緇熻繕鑳藉喅瀹氬湪榪愯鏄寚瀹氱殑榪囨護鍣ㄦ槸鍚﹀簲璇ヨ鎵撳紑浠ュ強浠涔堝艱浼犲叆榪囨護鍣ㄥ弬鏁般?
銆銆涓銆佷粈涔堟椂鍊欎嬌鐢ㄨ繃婊ゅ櫒
銆銆涓轟簡瑙ｉ噴涓轟粈涔堜嬌鐢ㄨ繃婊ゅ櫒錛屼笅闈㈣鎴戜滑鍏堟潵鐪嬩竴涓緥瀛愩傚亣璁炬湁涓涓鐞嗙敤鎴蜂俊鎭殑Web搴旂敤紼嬪簭銆傚湪褰撳墠鐘舵侊紝鎴戜滑鐨勫簲鐢ㄧ▼搴忎嬌鐢ㄥ悓涓涓簲鐢ㄦ帴鍙ｆ潵澶勭悊鎵鏈夌殑鐢ㄦ埛淇℃伅銆備絾濡傛灉鏈緇堢敤鎴瘋姹傚皢媧誨姩鐢ㄦ埛鍜岃繃鏈熺敤鎴峰垎寮綆＄悊銆傝繖浜涚姸鎬佷俊鎭淇濆瓨鍦ㄧ敤鎴瘋〃鐨勬煇涓鍒椾腑銆傚浜庤繖縐嶉渶姹傦紝鎴戜滑鏈瀹規槗鎯沖埌鐨勪竴涓В鍐蟲柟妗堟槸閲嶆柊鍐欐瘡涓涓猄ELECT HQL鏌ヨ璇彞錛屼篃灝辨槸鍦ㄦ瘡涓涓狧QL鍚庡姞涓涓猈HERE鏉′歡鏉ヨ繃婊よ繖浜涙暟鎹傚綋鐒訛紝榪欑鏂規硶鐨勫鏉傜▼搴忓彇鍐充簬浣犵殑Web紼嬪簭鏄浣曞緩绔嬬殑錛屽彲浠ュ緢綆鍗曪紝涔熷彲浠ュ緢澶嶆潅銆備絾涓嶇鏄畝鍗曡繕鏄鏉傦紝閮藉繀欏誨緱淇敼鎴戜滑鏇劇粡嫻嬭瘯榪囩殑浠ｇ爜錛岃繖灝嗙粰鎴戜滑鐨勭▼搴忓甫鏉ラ潪甯稿ぇ鐨勯殣鎮ｃ傝屼嬌鐢℉ibernate3.x錛屽皢浼氱粰鎴戜滑甯︽潵鍙﹀涓涓В鍐蟲柟妗堛傛垜浠皢浼氫負搴旂敤紼嬪簭鐨勭敤鎴風姸鎬佸垱寤轟竴涓繃婊ゅ櫒銆傚綋鐢ㄦ埛閫夋嫨鐢ㄦ埛鐨勭姸鎬佹椂錛堟椿鍔ㄦ垨榪囨湡錛夛紝搴旂敤紼嬪簭灝嗘縺媧誨綋鍓岺ibernate浼氳瘽鐨勭敤鎴風姸鎬佽繃婊ゅ櫒銆傝繖鏍蜂互鏉ワ紝鎵鏈夌殑SELECT HQL鏌ヨ灝嗚繑鍥炴煡璇㈢粨鏋滅殑瀛愰泦錛岃屾垜浠彧闇瑕佸湪Hibernate浼氳瘽鐘舵佸拰鐢ㄦ埛鐘舵佽繃婊ゅ櫒涓や釜鍦版柟娣誨姞浠ｇ爜錛屽茍涓嶉渶瑕佷慨鏀瑰師鍏堢殑浠ｇ爜銆?br />
銆銆浠庢蹇典笂璁詫紝浣犲彲浠ヤ嬌鐢╓HERE瀛愬彞鍦ㄥ簲鐢ㄧ▼搴忎腑瀹屾垚鍜孒ibernate榪囨護鍣ㄥ悓鏍風殑宸ヤ綔銆傚綋鐒訛紝鎴戜滑榪樺彲浠ュ湪鏁版嵁搴撲腑寤虹珛瑙嗗浘鏉ュ畬鎴愬悓鏍風殑宸ヤ綔錛堜絾鎵浣跨敤鐨勬暟鎹簱蹇呴』鏀寔瑙嗗浘鍔熻兘錛夈傝繖涓夌瑙ｅ喅鏂規閮藉彲浠ラ氳繃涓涓垨澶氫釜鏌ヨ鏉′歡鏉ラ檺鍒舵渶緇堢粨鏋溿傝孒ibernate榪囨護鍣ㄧ殑浼樺娍灝卞湪浜庡彲浠ラ殢鏃跺湪紼嬪簭涓叧闂垨鎵撳紑錛屼篃灝辨槸璇磋繃婊ゅ櫒鏄彲緙栫▼鐨勶紝鑰屼笖榪囨護鍣ㄨ瀹氫箟鍦℉ibernate鐨勬槧灝勬枃浠朵腑錛岃繖鏍峰皢闈炲父瀹規槗緇存姢銆傚綋鐒訛紝榪囨護鍣ㄤ篃鏈変笉瓚崇殑鍦版柟錛屼富瑕佺殑涓嶈凍灝辨槸鍦ㄨ繍琛屾椂鏃犳硶鍒涘緩鏂扮殑榪囨護鍣ㄣ傝岀▼搴忓湪榪愯鏃訛紝鎵鏈夌殑榪囨護鍣ㄥ繀欏昏鍦ㄦ槧灝勬枃浠朵腑琚寚瀹氥傝櫧鐒惰繖灝嗗ぇ澶ч檺鍒惰繃婊ゅ櫒鐨勭伒媧繪э紝浣嗚繃婊ゅ櫒鏀寔鍙傛暟鍖栥傚浜庢湰鏂囩殑渚嬪瓙錛屾垜浠彲浠ュ湪鏄犲皠鏂囦歡涓寚瀹氫繚瀛樼敤鎴風姸鎬佷俊鎭殑鍒椼傛垜浠笉闇瑕佸湪鏄犲皠鏂囦歡涓寚瀹氬彲鑳界殑鐘舵佸鹼紝榪欎簺鍦ㄧ▼搴忚繍琛屾椂閮藉彲浠ユ寚瀹氥傛帴涓嬫潵鎴戜滑灝辨潵鐪嬬湅濡備綍浣跨敤Hibernate3.x涓殑榪囨護鍣ㄦ潵鍐欑▼搴忋?br /> 銆銆鍦ㄥ緢澶氬簲鐢ㄧ▼搴忎腑涓嶉渶瑕佷竴嬈′嬌鐢ㄦ暟鎹〃涓殑鎵鏈夌殑鏁版嵁銆傚湪榪欑鎯呭喌涓嬶紝鎴戜滑灝遍渶瑕佷嬌鐢℉ibernate鐨勮繃婊ゅ櫒(Filter)鏉ュ緱鍒頒竴涓暟鎹瓧闆嗐傝繃婊ゅ櫒鐨勪富瑕佷綔鐢ㄦ槸闄愬埗鎴戜滑鐨勫簲鐢ㄧ▼搴忕殑鏌ヨ鏁版嵁銆傝繖涓繃婊ゅ櫒鐨勬蹇靛茍涓嶆槸浠涔堟柊姒傚康錛屽鏁版嵁搴撶殑瑙嗗浘涔熷睘浜庤繃婊ゅ櫒鑼冪暣銆傝孒ibernate涓烘垜浠彁渚涚殑榪囨護鍣ㄦ槸鍦ㄤ竴涓娊璞＄殑灞傛錛屽畠鍙互鍋氬埌鍜屼笉渚濊禆浜庢暟鎹簱鐨勭被鍨嬶紝浣挎暟鎹闂眰鍙潰瀵逛竴涓В鍐蟲柟妗堬紝閭ｅ氨鏄疕ibernate Filter銆傚綋鐒訛紝鐩存帴鍦ㄦ暟鎹簱涓緩绔嬭鍥句篃綆椾竴縐嶈В鍐蟲柟妗堬紝浣嗚繖鏍峰仛澶笉鐏墊椿銆傝孒ibernate榪囨護鍣ㄥ嵈鑳藉鍦℉ibernate浼氳瘽鐨勮繃紼嬩腑鎵撳紑鎴栧叧闂傚彟澶栵紝鍙﹀錛孒ibernate榪囨護鍣ㄥ彲浠ヤ紶閫掑弬鏁幫紝榪欐牱灝嗗ぇ澶у鍔燞ibernate鐨勭伒媧繪с傝櫧鐒禜ibernate2涔熸彁渚涗簡榪囨護鍣紝浣咹ibernate3.x鎻愪緵浜嗕竴縐嶅叏鏂扮殑榪囨護鍣ㄣ?
銆銆Hibernate3鐨勮繃婊ゅ櫒鍙互榪涜棰勫畾涔夛紝騫跺彲緇戝畾鍦ㄧ被鍜岄泦鍚堝眰銆傞偅涔堜粈涔堝彨棰勫畾涔夎繃婊ゅ櫒鍛紵灝辨槸鍙互瀹氫箟璞?where"瀛愬彞鐨勯檺鍒舵у瓙鍙ワ紝浣嗚繖浜涘瓙鍙ユ槸鐩稿綾誨拰涓嶅悓闆嗗悎鐨勫厓绱犵殑銆傞櫎浜嗚繖浜涜繃婊ゅ櫒鏉′歡鍙互琚弬鏁板寲澶栥傜郴緇熻繕鑳藉喅瀹氬湪榪愯鏄寚瀹氱殑榪囨護鍣ㄦ槸鍚﹀簲璇ヨ鎵撳紑浠ュ強浠涔堝艱浼犲叆榪囨護鍣ㄥ弬鏁般?
銆銆涓銆佷粈涔堟椂鍊欎嬌鐢ㄨ繃婊ゅ櫒
銆銆涓轟簡瑙ｉ噴涓轟粈涔堜嬌鐢ㄨ繃婊ゅ櫒錛屼笅闈㈣鎴戜滑鍏堟潵鐪嬩竴涓緥瀛愩傚亣璁炬湁涓涓鐞嗙敤鎴蜂俊鎭殑Web搴旂敤紼嬪簭銆傚湪褰撳墠鐘舵侊紝鎴戜滑鐨勫簲鐢ㄧ▼搴忎嬌鐢ㄥ悓涓涓簲鐢ㄦ帴鍙ｆ潵澶勭悊鎵鏈夌殑鐢ㄦ埛淇℃伅銆備絾濡傛灉鏈緇堢敤鎴瘋姹傚皢媧誨姩鐢ㄦ埛鍜岃繃鏈熺敤鎴峰垎寮綆＄悊銆傝繖浜涚姸鎬佷俊鎭淇濆瓨鍦ㄧ敤鎴瘋〃鐨勬煇涓鍒椾腑銆傚浜庤繖縐嶉渶姹傦紝鎴戜滑鏈瀹規槗鎯沖埌鐨勪竴涓В鍐蟲柟妗堟槸閲嶆柊鍐欐瘡涓涓猄ELECT HQL鏌ヨ璇彞錛屼篃灝辨槸鍦ㄦ瘡涓涓狧QL鍚庡姞涓涓猈HERE鏉′歡鏉ヨ繃婊よ繖浜涙暟鎹傚綋鐒訛紝榪欑鏂規硶鐨勫鏉傜▼搴忓彇鍐充簬浣犵殑Web紼嬪簭鏄浣曞緩绔嬬殑錛屽彲浠ュ緢綆鍗曪紝涔熷彲浠ュ緢澶嶆潅銆備絾涓嶇鏄畝鍗曡繕鏄鏉傦紝閮藉繀欏誨緱淇敼鎴戜滑鏇劇粡嫻嬭瘯榪囩殑浠ｇ爜錛岃繖灝嗙粰鎴戜滑鐨勭▼搴忓甫鏉ラ潪甯稿ぇ鐨勯殣鎮ｃ傝屼嬌鐢℉ibernate3.x錛屽皢浼氱粰鎴戜滑甯︽潵鍙﹀涓涓В鍐蟲柟妗堛傛垜浠皢浼氫負搴旂敤紼嬪簭鐨勭敤鎴風姸鎬佸垱寤轟竴涓繃婊ゅ櫒銆傚綋鐢ㄦ埛閫夋嫨鐢ㄦ埛鐨勭姸鎬佹椂錛堟椿鍔ㄦ垨榪囨湡錛夛紝搴旂敤紼嬪簭灝嗘縺媧誨綋鍓岺ibernate浼氳瘽鐨勭敤鎴風姸鎬佽繃婊ゅ櫒銆傝繖鏍蜂互鏉ワ紝鎵鏈夌殑SELECT HQL鏌ヨ灝嗚繑鍥炴煡璇㈢粨鏋滅殑瀛愰泦錛岃屾垜浠彧闇瑕佸湪Hibernate浼氳瘽鐘舵佸拰鐢ㄦ埛鐘舵佽繃婊ゅ櫒涓や釜鍦版柟娣誨姞浠ｇ爜錛屽茍涓嶉渶瑕佷慨鏀瑰師鍏堢殑浠ｇ爜銆?br />
銆銆浠庢蹇典笂璁詫紝浣犲彲浠ヤ嬌鐢╓HERE瀛愬彞鍦ㄥ簲鐢ㄧ▼搴忎腑瀹屾垚鍜孒ibernate榪囨護鍣ㄥ悓鏍風殑宸ヤ綔銆傚綋鐒訛紝鎴戜滑榪樺彲浠ュ湪鏁版嵁搴撲腑寤虹珛瑙嗗浘鏉ュ畬鎴愬悓鏍風殑宸ヤ綔錛堜絾鎵浣跨敤鐨勬暟鎹簱蹇呴』鏀寔瑙嗗浘鍔熻兘錛夈傝繖涓夌瑙ｅ喅鏂規閮藉彲浠ラ氳繃涓涓垨澶氫釜鏌ヨ鏉′歡鏉ラ檺鍒舵渶緇堢粨鏋溿傝孒ibernate榪囨護鍣ㄧ殑浼樺娍灝卞湪浜庡彲浠ラ殢鏃跺湪紼嬪簭涓叧闂垨鎵撳紑錛屼篃灝辨槸璇磋繃婊ゅ櫒鏄彲緙栫▼鐨勶紝鑰屼笖榪囨護鍣ㄨ瀹氫箟鍦℉ibernate鐨勬槧灝勬枃浠朵腑錛岃繖鏍峰皢闈炲父瀹規槗緇存姢銆傚綋鐒訛紝榪囨護鍣ㄤ篃鏈変笉瓚崇殑鍦版柟錛屼富瑕佺殑涓嶈凍灝辨槸鍦ㄨ繍琛屾椂鏃犳硶鍒涘緩鏂扮殑榪囨護鍣ㄣ傝岀▼搴忓湪榪愯鏃訛紝鎵鏈夌殑榪囨護鍣ㄥ繀欏昏鍦ㄦ槧灝勬枃浠朵腑琚寚瀹氥傝櫧鐒惰繖灝嗗ぇ澶ч檺鍒惰繃婊ゅ櫒鐨勭伒媧繪э紝浣嗚繃婊ゅ櫒鏀寔鍙傛暟鍖栥傚浜庢湰鏂囩殑渚嬪瓙錛屾垜浠彲浠ュ湪鏄犲皠鏂囦歡涓寚瀹氫繚瀛樼敤鎴風姸鎬佷俊鎭殑鍒椼傛垜浠笉闇瑕佸湪鏄犲皠鏂囦歡涓寚瀹氬彲鑳界殑鐘舵佸鹼紝榪欎簺鍦ㄧ▼搴忚繍琛屾椂閮藉彲浠ユ寚瀹氥傛帴涓嬫潵鎴戜滑灝辨潵鐪嬬湅濡備綍浣跨敤Hibernate3.x涓殑榪囨護鍣ㄦ潵鍐欑▼搴忋?br /> 銆鍥涖佸疄渚?/strong>
銆銆1. 涓涓繃婊ゆ暟鎹殑渚嬪瓙
銆銆鐜板湪鍋囪鏈変竴涓疄浣擄紝榪欎釜瀹炰綋璺熺潃“鏈夋晥鐨勮褰?#8221;鏁版嵁搴撴ā寮忋傝繖涓疄浣撴湁澶氫釜琛岋紝姣忎竴琛岄兘鏍規嵁鏃ユ湡涓嶅悓鑰屼笉鍚岋紝涔熷氨鏄鍦ㄦ棩鏈熻寖鍥村唴鏄湁鏁堢殑銆備竴涓猠mployment璁板綍灝嗘槸涓涓潪甯稿ソ鐨勪緥瀛愶紝鍥犱負employees鍙互鏉ユ垨鍘繪垨鍐嶅洖鏉ャ傜幇鍦ㄦ垜浠紑鍙戜竴涓甫UI鐨勭▼搴忥紝榪欎釜紼嬪簭闇瑕佸鐞唀mployment鏁版嵁鐨勫綋鍓嶈褰曘備負浜嗕嬌鐢ㄦ柊鐨勮繃婊ゅ櫒鐗規ц揪鍒拌繖涓洰鐨勩傛垜浠鍏堥渶瑕佸畾涔夎繖涓繃婊ゅ櫒錛岀劧鍚庡皢瀹冮檮鐫鍦‥mployee綾諱笂銆?br />
| <filter-def name="effectiveDate"> 銆<filter-param name="asOfDate" type="date"/> </filter-def> <class name="Employee" ...> 銆... 銆<many-to-one name="department" column="dept_id" class="Department"/> 銆<property name="effectiveStartDate" type="date" column="eff_start_dt"/> 銆<property name="effectiveEndDate" type="date" column="eff_end_dt"/> 銆... 銆<filter name="effectiveDate" condition=":asOfDate BETWEEN eff_start_dt and eff_end_dt"/> </class> <class name="Department" ...> 銆... 銆<set name="employees" lazy="true"> 銆銆<key column="dept_id"/> 銆銆<one-to-many class="Employee"/> 銆銆<filter name="effectiveDate" condition=":asOfDate BETWEEN eff_start_dt and eff_end_dt"/> 銆</set> </class> |
銆銆鐒跺悗錛屼負浜嗕繚璇佹繪槸鍔犲湪鍒板綋鍓嶇殑鏈夋晥璁板綍銆傚彧瑕佺畝鍗曞湴灝嗚繃婊ゅ櫒鎵撳紑鍗沖彲錛屼唬鐮佸涓嬶細
| Session session = ...; session.enabledFilter("effectiveDate").setParameter("asOfDate", new Date()); List results = session.createQuery("from Employee as e where e.salary > :targetSalary") .setLong("targetSalary", new Long(1000000)) .list(); |
銆銆鍦ㄤ笂闈㈢殑HQL涓紝鍗充嬌鎴戜滑鍙粰鍑轟竴涓猻alary綰︽潫鏉′歡錛岀敱浜庢垜浠凡緇忔墦寮鍙戣繃婊ゅ櫒錛屼篃鍙細寰楀埌褰撳墠媧誨姩鐨勬瘮涓鐧句竾澶氱殑闆囧憳銆?br />
銆銆2. 瀹夊叏鐨勫疄渚?br />
銆銆鍋囪鎴戜滑鏈変竴涓簲鐢ㄧ▼搴忥紝榪欎釜紼嬪簭緇欐瘡涓涓敤鎴峰垎閰嶄竴涓闂潈闄愩傚湪榪欏叾闂達紝緋葷粺涓竴浜涙晱鎰熺殑瀹炰綋琚垎閰嶇粰浜嗘煇浜涜闂眰嬈°傚洜姝わ紝涓涓敤鎴峰湪瀹冩墍灞炵殑璁塊棶灞備腑搴旇鍙互鐪嬪埌鏇村鐨勪笢瑗褲傚湪鏈緥瀛愪腑鎴戜滑灝辮閫氳繃榪囨護鍣ㄦ潵榪囨護鏌愪竴涓闂眰嬈′腑鐨勫疄浣撱備笅闈㈣鎴戜滑鏉ュ畾涔夎繃婊ゅ櫒銆?br />
| <filter-def name="accessLevel"> 銆<filter-param name="userLevel" type="int"/> </filter-def> <class name="Opportunity" ...> 銆... 銆<many-to-one name="region" column="region_id" class="Region"/> 銆<property name="amount" type="Money"> 銆銆<column name="amt"/> 銆銆<cloumn name="currency"/> 銆</property> 銆<property name="accessLevel" type="int" column="access_lvl"/> 銆... 銆<filter name="accessLevel">= access_lvl]]> </class> <class name="Region" ...> ... <set name="opportunities" lazy="true"> 銆<key column="region_id"/> 銆<one-to-many class="Opportunity"/> 銆<filter name="accessLevel">= access_lvl]]> </set> ... </class> |
銆銆鎺ヤ笅鏉ワ紝璁╂垜浠潵鎵撳紑榪囨護鍣ㄣ?br />
| User user = ...; Session session = ...; session.enableFilter("accessLevel").setParameter("userLevel", user.getAccessLevel()); |
銆銆涓嬮潰鐨勪唬鐮佹槸涓涓鍦ㄨ杞界殑鍖哄煙錛屽畠灝嗚繃婊ゅ綋鍓嶇敤鎴瘋闂眰鐨勯泦鍚堜互寰楀埌涓涓瓙闆嗐?br />
| Region region = (Region) session.get(Region.class, "EMEA"); region.getOpportunities().size(); |
銆銆鍥涖佺粨璁?/strong>
銆銆鏈枃綆鍗曚粙緇嶄簡Hibernate3.x鐨勪嬌鐢ㄦ柟娉曪紝騫剁粰鍑轟簡涓浜涘疄渚嬨傝櫧鐒惰繖浜涗緥瀛愬緢綆鍗曪紝浣嗗嵈浣挎垜浠Hibernate3.x榪囨護鍣ㄧ殑寮哄ぇ鏈変簡鏇存繁鐨勮璇嗐傛垜浠氳繃涓婇潰鐨勪緥瀛愪篃璁鎬細鏈夋洿澶氬ソ鐨勬兂娉曪紝濡傛灉鑳藉皢瀹冧滑鍜屼笉鍚岀殑鎷︽埅鏂規硶錛屽Web榪囨護鍣ㄧ粨鍚堬紝灝嗕細鍙戞尌鍑烘洿澶х殑鍔涢噺銆?杞?
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