CodesJava

Easy learning with example program codes

JPA OneToMany annotation


The @OneToMany annotation is used to implement One-to-Many relationship. Two entities are said to be in One-to-Many relationship if one entity has many occurrence in other entity.

Example:

    // In Customer class:
    @OneToMany(targetEntity=com.example.Order.class, cascade=ALL,
                mappedBy="customer")
    public Set getOrders() { return orders; }
 
    // In Order class:
    @ManyToOne
    @JoinColumn(name="CUST_ID", nullable=false)
    public Customer getCustomer() { return customer; }
Posted in JPA   
Sign Up/ Sign In
Ask a Question


Industrial Training

We offers Placement Oriented Training on Java, Spring, JSF, Hibernate, PHP, AngularJS, Angular 4, PLSQL, Oracle BI Publisher etc. We also provides Online training, please mail us at hr@codesjava.com.

Development

We also provides the Development services for Website Development , Java Development, PHP Development, Android App Development etc. You can contact us on hr@codesjava.com.

Copyright © 2018 CodesJava DMCA.com Protection Status SiteMap Reference: Java Wiki