Is there any good generic JPA DAO implemenation?

Question

According this article, generic JPA DAO(Data Access Object) is a pretty nice pattern.

Is there any good implementation?

Francisco Spaeth · Accepted Answer · 2012-06-15T22:43:27.123

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You could take a look into the Spring Data JPA.

A few new concepts were introduced into Spring Data JPA, for instance the Query creation based on the method name, so you can declare a method like findById(String id) and the "generic" implementation will interpret the method's name and execute something like select Entity from Entity where id = 'given string'

Methods like findByNameAndLastName(String name, String lastName) or even findByNameOrInternalId(String name, int internalId) are supported too.

edited Jun 15 '12 at 22:43

answered Jun 15 '12 at 22:36

Francisco Spaeth

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definitely look at this. I haven't used it but saw a seminar on it, and looked excellent. – Kevin Welker Jun 15 '12 at 22:59
@KevinWelker: the idea is so cool, and if we take a look further is not that complicated, I was surprise that no one thought on that before... – Francisco Spaeth Jun 15 '12 at 23:02

score 2 · Answer 2 · edited May 23 '17 at 12:06

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Just wanted to mention a couple more generic dao implementations for JPA:

Generic DAO toolkit - http://code.google.com/p/generic-dao/
Related Question in SO - Single DAO & generic CRUD methods (JPA/Hibernate + Spring)
A good blog article on JPA DAO - http://blog.xebia.com/2009/03/09/jpa-implementation-patterns-data-access-objects/

edited May 23 '17 at 12:06

Community

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answered Jun 15 '12 at 23:21

Biju Kunjummen

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The blog article is actually the same as the one I linked. :) T – hoymkot Jun 15 '12 at 23:44

score 0 · Answer 3 · answered May 20 '18 at 13:21

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Querydsl supports JPA and has an extensive support for building complex predicates for queries.

It doesn't support updates and inserts but you can use Spring Data for that, as Querydsl also integrates with Spring repositories.

answered May 20 '18 at 13:21

lujop

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Is there any good generic JPA DAO implemenation?

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