Using JPA With Scala
Why or Why Not to Use Scala for JPA Entites Writing JPA entities in scala has some advantages and some disadvantages. The major disadvantage at the time is that scala up to versions 2.7.x does not support nested annotations, so you cannot use any of the JPA annotations that represent collections of related annotations (like @JoinColumns or @NamedQueries) or have a complex structure like @SqlResult
Getting started with Spring Data JPA
As we have just released the first milestone of the Spring Data JPA project I’d like to give you a quick introduction into its features. As you probably know, the Spring framework provides support to build a JPA based data access layer. So what does Spring Data JPA add to this base support? To answer that question I'd like to start with the data access components for a sample domain implemented us
JPA 2.0 and Spring 3.0 with Maven
I’m currently updating WicketCool to use Spring 3.0, JPA2.0 and latest Wicket. Here is a short summary of my research, a quick tutorial showing how to jump into Spring3.0 + JPA2.0 development using Maven. 1. Dependencies a) Spring To use 3.0 release of the Spring framework you can’t no longer add one dependency as you used to do it <dependency> <groupId>org.springframework</groupId> <artifactId>sp
Java persistence API - Tutorial
JPA with Eclipselink. This tutorial explains how to use the Java persistence API. It uses EclipseLink, the reference implementation for the Java Persistence API (JPA). Mapping Java objects to database tables and vice versa is called Object-relational mapping (ORM). The Java Persistence API (JPA) is one possible approach to ORM. Via JPA the developer can map, store, update and retrieve data from re
Trasis Lab » Hibernateを使ã£ãŸã‚·ãƒ³ãƒ—ルãªJPA環境構築
Java Persistence API(JPA) ã¨ã¯ Java Persistence API(JPA) 㯠Java ã® O/R マッピング標準 API。 概è¦ã¯ (日経BPã®è¨˜äº‹)ãŒåˆ†ã‹ã‚Šã‚„ã™ã„。 メリット㯠オブジェクト指å‘㧠DB 開発ãŒã‚µã‚¯ã‚µã‚¯ã§ãる。 テーブルや制約ãªã©ã‚’自動的ã«ä½œæˆã§ãる。 オブジェクト・ã‚ャッシュã®ä»•çµ„ã¿ãªã©ã«ã‚ˆã£ã¦ DB アクセスã®è² è·è»½æ¸›ãƒ»é«˜é€ŸåŒ–ãŒæœŸå¾…ã§ãる。 ã¨ã„ã†ç‚¹ã€‚デメリット(注æ„点)㯠DB ã‚„ SQL ã«é–¢ã™ã‚‹çŸ¥è˜ãŒä¸è¦ã«ãªã‚‹ã‚ã‘ã§ã¯ãªã„。 上手㫠DB è¨è¨ˆã—ãªã„ã¨ãƒ¡ãƒ¢ãƒªã‚’馬鹿食ã„ã—ãŸã‚Šã€é€†ã«æ€§èƒ½ä½Žä¸‹ã§æ‚©ã¾ã•ã‚Œã‚„ã™ã„。 エンティティè¨è¨ˆè€…ã¯ã€ã©ã†ã„ã†ãƒ†ãƒ¼ãƒ–ル・制約・SQLãŒç”Ÿæˆã•ã‚Œã‚‹ã‹ã‚’æ„è˜ã™ã‚‹å¿…è¦ãŒã‚る。 ã¨ã„ã†ã“ã¨ã§ã€é–‹ç™ºè€…ã¯æ—¢å˜ã® DB ã‚„ SQL ã«åŠ ãˆã€JPA ã«é–¢ã™ã‚‹çŸ¥è˜ã®ç¿’å¾—ã‚’è¦æ±‚ã•ã‚Œã‚‹ã€‚ ã¨ã„ã£ãŸã¨ã“ã‚。 デメリットã«é–¢ã—
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JPA For Scala - FaKod's Blog
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