woman.java

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//$Id: Woman.java,v 1.2 2004/12/05 21:30:13 epbernard Exp $
package org.hibernate.test.metadata.manytomany;

import javax.ejb.Entity;
import javax.ejb.Id;
import javax.ejb.ManyToMany;
import javax.ejb.CascadeType;
import javax.ejb.AssociationTable;
import javax.ejb.Table;
import javax.ejb.JoinColumn;
import java.util.Set;
import java.io.Serializable;

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

	@ManyToMany(cascade = {CascadeType.ALL})
	@AssociationTable(
			table = @Table(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")
			}
	)
	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;
		}
	}

}