javax.persistence

CriteriaQuery month and year filter

由 孤人 提交于 2020-01-11 10:41:27
问题 I'm trying to make a criteria query (JPA/Hibernate)in a model which contain one column with date (Oracle 11G) . For example, i have 13-JAN-09 15-JAN-09 16-MAR-09 And my function is like: public MyEntity getEntitiesFromCertainFilters(int a, int b, java.util.date c) { CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery< MyEntity > query = builder.createQuery(MyEntity.class); Root< MyEntity > root = query.from(MyEntity.class); query.select(root).where ( builder.equal (

CriteriaQuery month and year filter

由 混江龙づ霸主 提交于 2020-01-11 10:41:20
问题 I'm trying to make a criteria query (JPA/Hibernate)in a model which contain one column with date (Oracle 11G) . For example, i have 13-JAN-09 15-JAN-09 16-MAR-09 And my function is like: public MyEntity getEntitiesFromCertainFilters(int a, int b, java.util.date c) { CriteriaBuilder builder = entityManager.getCriteriaBuilder(); CriteriaQuery< MyEntity > query = builder.createQuery(MyEntity.class); Root< MyEntity > root = query.from(MyEntity.class); query.select(root).where ( builder.equal (

Spring Boot - javax Import statements not working correctly

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-24 02:59:08
问题 I just started working with Spring Boot , and am currently following this tutorial with some small modifications to naming and using their own version of Eclipse , which has this generator built in. When I get to the first snippet of code, I try just copying over the import statements to start with, import com.fasterxml.jackson.annotation.JsonIgnore; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.OneToMany;

When to use @Embedded and @Embeddable?

由 会有一股神秘感。 提交于 2019-12-10 12:57:35
问题 Is it possible to annotate a class as @Embeddable or a property as @Embedded ? Sample code: @Embeddable class A{ ... } class B{ ... } @Entity class Foo { A a; @Embedded B b; } When to prefer @Embedded and @Embeddable ? 回答1: There are two primary uses for @Embedded / @Embeddable as far as I know: First, and most important: Splitting up large entity classes. In the database world, a large table (one with many columns) is fine. Breaking up such a table might even make things worse, and be in

What's the difference between javax.persistence.Id and org.springframework.data.annotation.Id?

由 雨燕双飞 提交于 2019-12-03 11:11:14
问题 I'd be interested whether there is the difference between javax.persistence.Id and org.springframework.data.annotation.Id . If Spring has created that annotation only for support the JPA annotation, then why? Does org.springframework.data.annotation.Id have another [additional] purpose? 回答1: org.springframework.data.annotation.Id is currently used by Spring to support mapping for other non relational persistence databases or frameworks that do not have a defined common persistence API like

What's the difference between javax.persistence.Id and org.springframework.data.annotation.Id?

由 此生再无相见时 提交于 2019-12-03 04:59:24
I'd be interested whether there is the difference between javax.persistence.Id and org.springframework.data.annotation.Id . If Spring has created that annotation only for support the JPA annotation, then why? Does org.springframework.data.annotation.Id have another [additional] purpose? megalucio org.springframework.data.annotation.Id is currently used by Spring to support mapping for other non relational persistence databases or frameworks that do not have a defined common persistence API like JPA. So, it is normally used when dealing with other spring-data projects such as spring-data
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