In this article I want to explain an issue concerning the JPA OneToMany relationship which I was faced with in one of my own projects. Working with object -orientated languages like java we often model relationships between object in various cases. One of such relationships is the OnToMany relationship. For example an object ‘Server’ may have a relationship to an object ‘Configuration’. To make the ‘Configuration’ object generic we can model the JPA object in Java like this:
@javax.persistence.Entity
public class Configuration implements java.io.Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private BigInteger id;
public String itemValue;
public String itemName;
@SuppressWarnings("unused")
private Configuration() {
}
public Configuration(String name, String value) {
itemValue = value;
itemName = name;
}
}