Hibernate example source code file (Woman.java)

This example Hibernate source code file (Woman.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

foreignkey, id, io, joincolumn, joincolumn, jointable, manytomany, manytomany, set, set, string, util, wm_w_fk, woman, woman, womanpk

The Hibernate Woman.java source code

//$Id$
package org.hibernate.test.annotations.manytomany;
import java.io.Serializable;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import org.hibernate.annotations.ForeignKey;

/**
 * Woman knowing several mens
 *
 * @author Emmanuel Bernard
 */
@Entity
public class Woman implements Serializable {
	private WomanPk id;
	private String carName;
	private Set<Man> mens;
	private Set<Cat> cats;

	@ManyToMany(mappedBy = "humanContacts")
	public Set<Cat> getCats() {
		return cats;
	}

	public void setCats(Set<Cat> cats) {
		this.cats = cats;
	}

	@ManyToMany(cascade = {CascadeType.ALL})
	@JoinTable(
			name = "Man_Woman",
			joinColumns = {
			@JoinColumn(name = "womanLastName", referencedColumnName = "lastName"),
			@JoinColumn(name = "womanFirstName", referencedColumnName = "firstName")
					},
			inverseJoinColumns = {
			@JoinColumn(name = "manIsElder", referencedColumnName = "elder"),
			@JoinColumn(name = "manLastName", referencedColumnName = "lastName"),
			@JoinColumn(name = "manFirstName", referencedColumnName = "firstName")
					}
	)
	@ForeignKey(name = "WM_W_FK", inverseName = "WM_M_FK")
	public Set<Man> getMens() {
		return mens;
	}

	public void setMens(Set<Man> mens) {
		this.mens = mens;
	}

	@Id
	public WomanPk getId() {
		return id;
	}

	public void setId(WomanPk id) {
		this.id = id;
	}

	public String getCarName() {
		return carName;
	}

	public void setCarName(String carName) {
		this.carName = carName;
	}


	public int hashCode() {
		//a NPE can occurs, but I don't expect hashcode to be used before pk is set
		return getId().hashCode();
	}

	public boolean equals(Object obj) {
		//a NPE can occurs, but I don't expect equals to be used before pk is set
		if ( obj != null && obj instanceof Woman ) {
			return getId().equals( ( (Woman) obj ).getId() );
		}
		else {
			return false;
		}
	}

}