Spring Boot Data JPA Left, Right, Inner and Cross Join Examples on Three Tables

Introduction In this guide we will walk through Spring Boot Data JPA left, right, inner and cross join examples on three tables. In pas we have seen similar example on two tables but I got some requests on how to perform similar joins on three tables. Therefore I am going to show you how to perform joins – left, right, inner, cross – on three tables. We are going to build custom query using @Query annotation to fetch the data from database tables. We also fetch the columns which are required to…

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Spring Boot Data JPA Left, Right, Inner and Cross Join Examples

Introduction This tutorial will show you Spring Boot Data JPA Left, Right, Inner and Cross Join Examples. We will tell you here how to use this example in Spring Boot application, where we will use Spring Data JPA Repository to query our database tables. We will build the project using both maven and gradle build tools. We will use here custom query using @Query annotation to fetch the data. We will also fetch the columns which are required to fetch for displaying purpose. We will create a DTO or VO…

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Bidirectional Many-To-Many Relationship with Join Tables in Hibernate

In bidirectional association, we will have navigation in both direction, i.e, both side of the association will have the reference to the other side. The both side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In many to many relationship, one multiple objects can have relationship with multiple target objects. Let’s consider CD and Artist. So multiple CDs can be written by multiple Artists or multiple Artists can write multiple CDs. So we will create three tables CD, CDArtist…

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Bidirectional One-To-One Relationship with Join Tables in Hibernate

In bidirectional association, we will have navigation in both direction, i.e, both side of the association will have the reference to the other side. The both side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In one to one relationship, one source object can have relationship with only one target object. Let’s consider CD and Artist. So one CD can be written by one Artist or an Artist can write only one CD. So we will create two tables…

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Bidirectional One-To-Many/Many-To-One Relationship using Join Tables in Hibernate

In bidirectional association, we will have navigation in both direction, i.e, both side of the association will have the reference to the other side. The both side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In one to many or many to one relationship, one source object can have relationship with multiple target objects or multiple target objects will have relationship with only one source object. Let’s consider CD and Artist. So one CD can be written by multiple…

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Unidirectional Many-To-Many Relationship with Join Tables in Hibernate

In unidirectional association, we will have navigation only in one direction, i.e, only one side of the association will have the reference to the other side. The one side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In many to many relationship, multiple target objects can have relationship with multiple source objects. Let’s consider CD and Artist. So only one Artist can write multiple CD or a CD can be written by multiple Artists. So we will create three…

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Unidirectional One-To-One Relationship with Join Tables in Hibernate

In unidirectional association, we will have navigation only in one direction, i.e, only one side of the association will have the reference to the other side. The one side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In one to one relationship, single target object can have relationship with only one source object. Let’s consider CD and Artist. So only one Artist can write only one CD. So we will create three tables CD, Artist and CDArtist in the…

Continue

Unidirectional Many-To-One Relationship with Join Tables in Hibernate

In unidirectional association, we will have navigation only in one direction, i.e, only one side of the association will have the reference to the other side. The one side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In many to one relationship, multiple target objects can have relationship with same source object. Let’s consider CD and Artist. So many Artists can write only one CD. So we will create three tables CD, Artist and CDArtist in the database and…

Continue

Unidirectional One-To-Many Relationship with Join Tables in Hibernate

In unidirectional association, we will have navigation only in one direction, i.e, only one side of the association will have the reference to the other side. The one side of the association will implement one of the collection interfaces, if it has the reference to the other entity. In one to many relationship, multiple target objects can have relationship with same source object. Let’s consider CD and Artist. So many Artists can write only one CD. So we will create three tables CD, Artist and CDArtist in the database and…

Continue