技术问答hibernate鍏宠仈鏄犲皠鎬庝箞閰嶇疆 - 扬州沐宇科技

鍦℉ibernate涓紝鍏宠仈鏄犲皠鍙互閫氳繃浠ヤ笅鍑犵鏂瑰紡杩涜閰嶇疆锛?/p>

涓€瀵逛竴鏄犲皠锛圤ne-to-One Mapping锛夛細
- 浣跨敤@OneToOne娉ㄨВ鏉ユ爣璇嗗叧鑱斿叧绯伙紝骞朵娇鐢ˊJoinColumn娉ㄨВ鏉ユ寚瀹氬叧鑱斿瓧娈点€?/li>
- 鍙互浣跨敤fetch灞炴€ф潵鎸囧畾鍏宠仈瀵硅薄鐨勫姞杞界瓥鐣ャ€?/li>
- 鍦ㄥ叧鑱旂殑瀹炰綋绫讳腑浣跨敤@PrimaryKeyJoinColumn娉ㄨВ鏉ユ寚瀹氬叧鑱斿瓧娈点€?/li>
涓€瀵瑰鏄犲皠锛圤ne-to-Many Mapping锛夛細
- 浣跨敤@OneToMany娉ㄨВ鏉ユ爣璇嗗叧鑱斿叧绯伙紝骞朵娇鐢ˊJoinColumn娉ㄨВ鏉ユ寚瀹氬叧鑱斿瓧娈点€?/li>
- 鍙互浣跨敤fetch灞炴€ф潵鎸囧畾鍏宠仈瀵硅薄鐨勫姞杞界瓥鐣ャ€?/li>
- 鍦ㄥ叧鑱旂殑瀹炰綋绫讳腑浣跨敤@ManyToOne娉ㄨВ鏉ユ爣璇嗗叧鑱旂殑澶氬涓€鍏崇郴銆?/li>
澶氬涓€鏄犲皠锛圡any-to-One Mapping锛夛細
- 浣跨敤@ManyToOne娉ㄨВ鏉ユ爣璇嗗叧鑱斿叧绯伙紝骞朵娇鐢ˊJoinColumn娉ㄨВ鏉ユ寚瀹氬叧鑱斿瓧娈点€?/li>
- 鍙互浣跨敤fetch灞炴€ф潵鎸囧畾鍏宠仈瀵硅薄鐨勫姞杞界瓥鐣ャ€?/li>
澶氬澶氭槧灏勶紙Many-to-Many Mapping锛夛細
- 浣跨敤@ManyToMany娉ㄨВ鏉ユ爣璇嗗叧鑱斿叧绯伙紝骞朵娇鐢ˊJoinTable娉ㄨВ鏉ユ寚瀹氬叧鑱旂殑涓棿琛ㄣ€?/li>
- 鍙互浣跨敤fetch灞炴€ф潵鎸囧畾鍏宠仈瀵硅薄鐨勫姞杞界瓥鐣ャ€?/li>

闄や簡浠ヤ笂鍩烘湰鐨勫叧鑱旀槧灏勯厤缃紝Hibernate杩樻敮鎸佺骇鑱旀搷浣滐紙cascade锛夊拰寤惰繜鍔犺浇锛坙azy loading锛夌瓑楂樼骇閰嶇疆銆傚彲浠ラ€氳繃鍦ㄥ叧鑱旀敞瑙ｄ腑璁剧疆瀵瑰簲鐨勫睘鎬ф潵瀹炵幇杩欎簺楂樼骇閰嶇疆銆?/p>

浠ヤ笂浠呬负Hibernate鍏宠仈鏄犲皠鐨勫熀鏈厤缃柟寮忥紝鍏蜂綋鐨勯厤缃繕鍙栧喅浜庡疄闄呯殑涓氬姟闇€姹傚拰鏁版嵁妯″瀷銆傚洜姝わ紝鍦ㄥ疄闄呭紑鍙戜腑闇€瑕佹牴鎹叿浣撴儏鍐佃繘琛岄€傚綋鐨勯厤缃€?/p>