Hibernate example source code file (ChildPk.java)

This example Hibernate source code file (ChildPk.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

childpk, childpk, embeddable, io, joincolumn, joincolumn, joincolumns, joincolumns, manytoone, parent, parent, serializable

The Hibernate ChildPk.java source code

//$Id$
package org.hibernate.test.annotations.cid;
import java.io.Serializable;
import javax.persistence.Embeddable;
import javax.persistence.JoinColumn;
import javax.persistence.JoinColumns;
import javax.persistence.ManyToOne;

/**
 * Child Pk with many to one inside
 *
 * @author Emmanuel Bernard
 */
@Embeddable
public class ChildPk implements Serializable {
	public int nthChild;
	@ManyToOne()
	@JoinColumns({
	@JoinColumn(name = "parentLastName", referencedColumnName = "p_lname", nullable = false),
	@JoinColumn(name = "parentFirstName", referencedColumnName = "firstName", nullable = false)
			})
	public Parent parent;

	public boolean equals(Object o) {
		if ( this == o ) return true;
		if ( !( o instanceof ChildPk ) ) return false;

		final ChildPk childPk = (ChildPk) o;

		if ( nthChild != childPk.nthChild ) return false;
		if ( !parent.equals( childPk.parent ) ) return false;

		return true;
	}

	public int hashCode() {
		int result;
		result = nthChild;
		result = 29 * result + parent.hashCode();
		return result;
	}
}