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smotokezuru id:smotokezuru

JPAã«é–¢ã™ã‚‹smotokezuruã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (4)

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JavaEE 7 JPA 2.1ã®æ–°æ©Ÿèƒ½ã‚³ãƒ³ãƒãƒ¼ã‚¿ - ã—ã‚“ã•ã‚“ã®å‡ºå¼µæ‰€ ã¯ã¦ãªãƒ–ãƒã‚°ç·¨
JPAã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯2.1ã¨å‰ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‹ã‚‰0.1ã—ã‹ä¸ŠãŒã£ã¦ã„ãªã„ãŒã€éžå¸¸ã«ã„ã„ã‚‚ã®ãŒè¿½åŠ ã•ã‚Œã¦ã„ã‚‹ã€‚ 2.1ã®ç›®çŽ‰æ©Ÿèƒ½ã¨ã—ã¦ã¯ã‚¹ãƒˆã‚¢ãƒ‰å‘¼ã³å‡ºã—ãŒå¯èƒ½ã«ãªã£ãŸã¨ã‹ã‚ã‚‹ã®ã ã‚ã†ãŒã€åŸºæœ¬ã‚¹ãƒˆã‚¢ãƒ‰ä½¿ã„ãŸããªã„ã®ã§ãŠã„ã‚‰ã¯ç„¡è¦–ã™ã‚‹ã€‚ ã§ã€åœ°å‘³ãƒ»ãƒ»ãƒ»ã§ã¯ãªããƒ‰æ´¾æ‰‹ãªã®ã«ã‚ã¾ã‚Šèªžã‚‰ã‚Œãªã„æ–°æ©Ÿèƒ½ã‚‚ã‚ã‚‹ã€‚ ãã‚ŒãŒã‚³ãƒ³ãƒãƒ¼ã‚¿ã ã€‚ã‚„ã£ã¨ããŸï¼ ã“ã‚Œã¯ã©ã†ã„ã†ã‚‚ã®ã‹ã¨ã„ã†ã¨ã€ãŸã¨ãˆã°ã€DBä¸Šã«ã¯æ–‡å—åˆ—ã§ä¿å˜ã‚’ã—ã¦ã€Entityä¸Šã¯Integerã§ä¿æŒã™ã‚‹ã¨ã„ã£ãŸã‚‚ã®ã€‚ ã‚‚ã¡ã‚ã‚“ã€ãƒ©ãƒƒãƒ‘ã‚¯ãƒ©ã‚¹ä»¥å¤–ã§ã‚‚ãµã¤ã†ã«ä½¿ãˆã‚‹ã®ã§ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã«åˆã‚ã›ã¦ç©æ¥µçš„ã«ã‚³ãƒ³ãƒãƒ¼ã‚¿ã‚’ä½œã£ã¦ãŠãã¨æ—¢å˜ã®DBã‚’å¤‰æ›´ã›ãšã€ã‹ã¨ã„ã£ã¦ãã‚Œã«Entityæ“ä½œãŒå¼•ããšã‚‰ã‚Œãªã„ã€éžå¸¸ã«è‰¯ã„ã‚‚ã®ãŒå‡ºæ¥ä¸ŠãŒã‚‹ã€‚ ã‚³ãƒ¼ãƒ‰ã¯æ˜¨æ—¥ã®ã‚¨ãƒ³ãƒˆãƒªã®JPA2.0ã®ã‚µãƒ³ãƒ—ãƒ«ã‚’ã‚‚ã¨ã«å¤‰æ›´ã—ã¦ã¿ã‚ˆã†ã€‚ addressã¨ã„ã†æ–‡å—åˆ—åž‹ã«ã¯éƒ½é“åºœçœŒãŒå…¥ã£ã¦ã„ãŸã®ã§ã€ãã“ã«
smotokezuru 2013/07/02
jpa
ãƒªãƒ³ã‚¯
Querydslã§JPAãŒæ€ã£ãŸã‚ˆã‚Šã‚‚æ—ã‚‹ - æ°´ã¾ã‚“ã˜ã‚…ã†2
å…ˆæ—¥ã€ [twitter:@seratch]ã•ã‚“ã‹ã‚‰æ•™ãˆã¦ã„ãŸã ã„ãŸQuerydslãŒã™ã”ã„è‰¯ã‹ã£ãŸã®ã§è¨˜äº‹ã¨ã—ã¦æ›¸ãã¾ã™ã€‚ http://www.querydsl.com/ JPAã«ãŠã‘ã‚‹èª²é¡Œ JPAã§ã¯JPQLã¨Criteriaã¨ã„ã†äºŒã¤ã®ã‚¯ã‚¨ãƒªè¨˜è¿°è¨€èªžãŒã‚ã‚Šã¾ã™ã€‚ ã—ã‹ã—ãªãŒã‚‰ã€ãã‚Œãžã‚Œä½¿ã„å‹æ‰‹ã¨ã„ã†æ„å‘³ã§ã¯é›£ã®ã‚ã‚‹ã‚‚ã®ã§ã—ãŸã€‚ JPQL JPQLã¯ä»¥ä¸‹ã®ã‚ˆã†ãªã€SQLãƒ©ã‚¤ã‚¯ãªã‚¯ã‚¨ãƒªè¨˜è¿°è¨€èªžã§ã™ã€‚ select new com.github.megascus.EmployeeBean(e.code, e.name, e.age) from Employee as e where name like 's%'SQLãƒ©ã‚¤ã‚¯ã«è¨˜è¿°ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ãŸã‚ã€SQLãŒç†è§£ã§ãã‚‹äººã«ã¨ã£ã¦ã¯ç†è§£ã—ã‚„ã™ã„ã¨ã„ã†åˆ©ç‚¹ãŒã‚ã‚Šã¾ã™ã€‚ ã—ã‹ã—ãªãŒã‚‰ã€JPQLè‡ªä½“ã¯ãŸã ã®æ–‡å—åˆ—ã§å®šç¾©ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ãã®ãŸ
smotokezuru 2013/01/25
JPA
ãƒªãƒ³ã‚¯
JPAã®@Embeddableã®ä½¿ã„é“ - é”äººãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã‚’ç›®æŒ‡ã—ã¦
JPAã«ã¯@Embeddableã¨ã„ã†ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ãŒã‚ã‚Šã¾ã™ãŒã€ã“ã®ãƒžãƒƒãƒ”ãƒ³ã‚°æ©Ÿèƒ½ã‚’ã†ã¾ãæ´»ç”¨ã—ã¦ã„ã‚‹ãƒãƒ¼ãƒ ã¯ã©ã‚Œãã‚‰ã„ã‚ã‚‹ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿç§ãŒä»Šã¾ã§é©ç”¨ã—ã¦ããŸä½¿ã„æ–¹ã¯çµå±€ä»¥ä¸‹ã®2é€šã‚Šã®ä½¿ã„æ–¹ã®ã„ãšã‚Œã‹ã«é›†ç´„ã§ãã‚‹ã¨æ€ã„ã¾ã™ã€‚ 1.å±žæ€§ã®å¤šã„å·¨å¤§ãªãƒ†ãƒ¼ãƒ–ãƒ«ã«å¯¾ã™ã‚‹ã‚¨ãƒ³ãƒ†ã‚£ãƒ†ã‚£ã‚’å…¥ã‚Œåã«æ§‹é€ åŒ–ã•ã‚ŒãŸã‚¯ãƒ©ã‚¹ã¨ã—ã¦æ‰±ã† ã“ã‚Œã¯ã¡ã‚‡ã†ã©COBOLã«ãŠã„ã¦å·¨å¤§ãªãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’ã°ã‚‰ã°ã‚‰ã®ç‹¬ç«‹é …ç›®ã¨ã—ã¦æ‰±ã†ã®ã§ã¯ãªãã€å€¤ã®å¡Šã”ã¨ã«é›†å›£é …ç›®ã¨ã—ã¦ä¸€ã¾ã¨ã¾ã‚Šã®å¤‰æ•°ã¨ã—ã¦ã¾ã¨ã‚ã¦è€ƒãˆã‚‹ã¨ã„ã†ç™ºæƒ³ã«è¿‘ã„è€ƒãˆæ–¹ã§ã™ã€‚ãŸã¨ãˆã°ã€COBOLã§ã¯ä»¥ä¸‹ã®ã‚ˆã†ã«å¾“æ¥å“¡ãƒ¬ã‚³ãƒ¼ãƒ‰ã‚’å›ºã¾ã‚Šã§åˆ†å‰²ã—ã¦å®šç¾©ã§ãã¾ã™ã€‚ DATA DIVISION. WORKING-STORAGE SECTION. 01 EMPLOYEE. 05 EMP-NO PIC 9(7). 05 EMP-NAME 10 FIRST-NAME PIC X(15).
smotokezuru 2012/10/10
ã‚ã“ãŒã‚Œã®ValueObjectã¸ã®é“ã¯é™ºã—ã„

JPA

hibernate

PofEAA

ddd
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Old Tech Per: 10 Tips on JPA Domain Modelling
This post is a collection of tips on what I think is good advice, when domain modelling in Java with JPA as ORM mapping techno logy. Do you agree? Do you have extra advice? Please let me know! Here they come, in no particular order. 1. Put Annotation on Methods, not Attributes If using annotations on attributes, JPA engine will set directly in the attributes using reflection, hereby by-passing any
smotokezuru 2010/05/03
JPA

java
ãƒªãƒ³ã‚¯
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