Hibernate Sql Error 547 Sqlstate 23000
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This Site Careers Other all forums Forum: Object Relational Mapping Hibernate with strange behavior Marcus Laranjeira Greenhorn Posts: 4 posted 7 years ago In some tests with Hibernate, to remove an entity that appears in 3 lines of an intermediate table, instead of removing it to 3 lines in this entity, he removed and inserted again ALL lines referring to those who remained in the intermediate table. To understand better, see the code: Entity TEAM:// imports here... @Entity public class Team { @Id private int team; private String name; @OneToOne private TeamType teamType; @ManyToMany private List
This Site Careers Other all forums Forum: Object Relational Mapping Hibernate not inserting rows Rav Nomula Greenhorn Posts: 6 posted 3 years ago I https://coderanch.com/t/614787/ORM/databases/Hibernate-inserting-rows able to generate the schema but when I try to insert, I am getting the error com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'id' cannot be null. My Phone table primary key is https://kb.informatica.com/solution/23/Pages/11/174374.aspx a composite key consisting of phoneNumber and foreign key id. I have my classes as below Student.java import java.io.Serializable; import java.util.Set; import javax.persistence.CascadeType; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import sql error javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.OneToMany; @Entity @SuppressWarnings("serial") public class Student implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) private int id; private String fName; private String lName; private String mname; @OneToMany(cascade = CascadeType.ALL) @JoinColumn(name = "id") private Set
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