Hibernate example source code file (Cat.java)

This example Hibernate source code file (Cat.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

calendar, cat, date, date, generatedvalue, gregoriancalendar, integer, io, list, list, postupdate, string, string, tab, tab, util

The Hibernate Cat.java source code

//$Id$
package org.hibernate.ejb.test;

import javax.persistence.Basic;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.PostLoad;
import javax.persistence.PostPersist;
import javax.persistence.PostUpdate;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Transient;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;

import org.jboss.logging.Logger;

/**
 * @author Emmanuel Bernard
 */
@SuppressWarnings({"unchecked", "serial"})
@Entity
@EntityListeners( LastUpdateListener.class )
public class Cat implements Serializable {
	private static final Logger log = Logger.getLogger( Cat.class );

	private static final List ids = new ArrayList(); 	// used for assertions
	public static int postVersion = 0;	// used for assertions

	private Integer id;
	private String name;
	private Date dateOfBirth;
	private int age;
	private long length;
	private Date lastUpdate;
	private int manualVersion = 0;
	private List<Kitten> kittens;

	@Id
	@GeneratedValue
	public Integer getId() {
		return id;
	}

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

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Date getDateOfBirth() {
		return dateOfBirth;
	}

	public void setDateOfBirth(Date dateOfBirth) {
		this.dateOfBirth = dateOfBirth;
	}

	public int getManualVersion() {
		return manualVersion;
	}

	public void setManualVersion(int manualVersion) {
		this.manualVersion = manualVersion;
	}

	@Transient
	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	@Basic
	@Temporal( TemporalType.TIMESTAMP )
	public Date getLastUpdate() {
		return lastUpdate;
	}

	public void setLastUpdate(Date lastUpdate) {
		this.lastUpdate = lastUpdate;
	}

	@PostUpdate
	private void someLateUpdateWorking() {
        log.debug("PostUpdate for: " + this.toString());
		postVersion++;
	}

	@PostLoad
	public void calculateAge() {
		Calendar birth = new GregorianCalendar();
		birth.setTime( dateOfBirth );
		Calendar now = new GregorianCalendar();
		now.setTime( new Date() );
		int adjust = 0;
		if ( now.get( Calendar.DAY_OF_YEAR ) - birth.get( Calendar.DAY_OF_YEAR ) < 0 ) {
			adjust = -1;
		}
		age = now.get( Calendar.YEAR ) - birth.get( Calendar.YEAR ) + adjust;
	}

	@PostPersist
	public synchronized void addIdsToList() {
		ids.add( getId() );
	}

	public static synchronized List getIdList() {
		return Collections.unmodifiableList( ids );
	}

	public long getLength() {
		return length;
	}

	public void setLength(long length) {
		this.length = length;
	}

	@OneToMany(cascade = CascadeType.ALL)
	public List<Kitten> getKittens() {
		return kittens;
	}

	public void setKittens(List<Kitten> kittens) {
		this.kittens = kittens;
	}

	/**
	 * Constructs a <code>String with all attributes
	 * in name = value format.
	 *
	 * @return a <code>String representation
	 * of this object.
	 */
	@Override
    public String toString()
	{
	    final String TAB = "    ";

	    String retValue = "";

	    retValue = "Cat ( "
	        + super.toString() + TAB
	        + "id = " + this.id + TAB
	        + "name = " + this.name + TAB
	        + "dateOfBirth = " + this.dateOfBirth + TAB
	        + "age = " + this.age + TAB
	        + "length = " + this.length + TAB
	        + "lastUpdate = " + this.lastUpdate + TAB
	        + "manualVersion = " + this.manualVersion + TAB
	        + "postVersion = " + Cat.postVersion + TAB
	        + "kittens = " + this.kittens + TAB
	        + " )";

	    return retValue;
	}
}