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java:jpa:association

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java:jpa:association [2018/09/10 12:32]
kwon37xi [@JoinFormula]
java:jpa:association [2019/04/18 16:49]
kwon37xi
줄 22: 줄 22:
 ==== @JoinFormula ==== ==== @JoinFormula ====
   * 관계가 맺어져 있지 않을 경우 ''​null''​값을 저장해야 하지만 Legacy DB의 경우 ''​0''​ 이나 기타 다른 값을 저장하는 경우가 있다. ​   * 관계가 맺어져 있지 않을 경우 ''​null''​값을 저장해야 하지만 Legacy DB의 경우 ''​0''​ 이나 기타 다른 값을 저장하는 경우가 있다. ​
-  * [[https://​docs.jboss.org/​hibernate/​orm/​5.2/​javadocs/​org/​hibernate/​annotations/​JoinFormula.html|@JoinFormula]]+  * [[https://​docs.jboss.org/​hibernate/​orm/​5.2/​javadocs/​org/​hibernate/​annotations/​JoinFormula.html|@JoinFormula]]<code java> 
 +@JoinFormula(value="​CASE the0isNullColumn WHEN 0 THEN NULL ELSE the0isNullColumn END"​) 
 +</​code>​
   * [[https://​docs.jboss.org/​hibernate/​orm/​5.2/​javadocs/​org/​hibernate/​annotations/​JoinColumnOrFormula.html|@JoinColumnOrFormula]]   * [[https://​docs.jboss.org/​hibernate/​orm/​5.2/​javadocs/​org/​hibernate/​annotations/​JoinColumnOrFormula.html|@JoinColumnOrFormula]]
   * [[https://​docs.jboss.org/​hibernate/​orm/​5.2/​javadocs/​org/​hibernate/​annotations/​JoinColumnsOrFormulas.html|@JoinColumnsOrFormulas]]   * [[https://​docs.jboss.org/​hibernate/​orm/​5.2/​javadocs/​org/​hibernate/​annotations/​JoinColumnsOrFormulas.html|@JoinColumnsOrFormulas]]
줄 34: 줄 36:
   * [[https://​vladmihalcea.com/​how-to-customize-an-entity-association-join-on-clause-with-hibernate-joinformula/​|How to customize an entity association JOIN ON clause with Hibernate @JoinFormula - Vlad Mihalcea]]   * [[https://​vladmihalcea.com/​how-to-customize-an-entity-association-join-on-clause-with-hibernate-joinformula/​|How to customize an entity association JOIN ON clause with Hibernate @JoinFormula - Vlad Mihalcea]]
   * [[https://​vladmihalcea.com/​how-to-map-the-latest-child-of-a-parent-entity-using-hibernate-joinformula/#​more-6983|How to map the latest child of a parent entity using Hibernate @JoinFormula - Vlad Mihalcea]]   * [[https://​vladmihalcea.com/​how-to-map-the-latest-child-of-a-parent-entity-using-hibernate-joinformula/#​more-6983|How to map the latest child of a parent entity using Hibernate @JoinFormula - Vlad Mihalcea]]
 +
 +=== 참조 ===
 +  * [[https://​www.baeldung.com/​jpa-join-types|JPA Join Types | Baeldung]]
  
java/jpa/association.txt · 마지막으로 수정됨: 2020/01/14 13:28 저자 kwon37xi