This example demonstrates how Tapestry can handle CRUD (Create, Review, Update, Delete) with ease.
It uses the Grid, BeanEditor, and BeanDisplay components which are especially great for prototyping.

Id[Sortable]First Name[Sortable]Last Name[Sortable]Region[Sortable]Start Date[Sortable]Action
4Lilly2_1Spillage East Coast Jul 30, 2014 Review Update Delete
2MarylllContrary West Coast Jul 12, 2014 Review Update Delete
1shabiaaaa East Coast Dec 10, 2002 Review Update Delete
3testiSprat West Coast Feb 28, 2007 Review Update Delete
5try3Spoon1 West Coast Feb 29, 2008 Review Update Delete

The source for PersonFinderService, @EJB handling, etc. is shown in the @EJB example.


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- We need a doctype to allow us to use special characters like &nbsp; 
     We use a "strict" DTD to make IE follow the alignment rules. -->
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd" xmlns:p="tapestry:parameter">
    <link rel="stylesheet" type="text/css" href="${context:css/together/easycrud.css}"/>
    <h1>Easy CRUD</h1>
    This example demonstrates how Tapestry can handle CRUD (Create, Review, Update, Delete) with ease.<br/>
    It uses the Grid, BeanEditor, and BeanDisplay components which are especially great for prototyping.

    <div class="eg">
        <a t:type="pageLink" t:page="together/easycrud/person/PersonCreate" href="#">Create...</a><br/><br/>
        <t:if test="errorMessage">
            <span style="color:red">${errorMessage}</span><br/><br/>
        <table t:type="grid" t:source="persons" t:row="person" include="id,firstName,lastName,region,startDate" t:add="action">[Grid here]
                <a t:type="pageLink" t:page="together/easycrud/person/PersonReview" t:context="person.id" href="#">Review</a>
                <a t:type="pageLink" t:page="together/easycrud/person/PersonUpdate" t:context="person.id" href="#">Update</a>
                <a t:type="eventLink" t:event="Delete" t:context="[person.id,person.version]" 
                    t:mixins="Confirm" t:message="Delete ${person.firstName} ${person.lastName}?">Delete</a>

    <a t:type="pageLink" t:page="Index" href="#">Home</a><br/><br/>
    The source for PersonFinderService, @EJB handling, etc. is shown in the @EJB example.<br/><br/>

    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/pages/together/easycrud/Persons.tml"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/pages/together/easycrud/Persons.java"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/css/together/easycrud.css"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/mixins/Confirm.java"/>
    <t:sourcecodedisplay src="/web/src/main/java/jumpstart/web/mixins/Confirm.js"/>
    <t:sourcecodedisplay src="/business/src/main/java/jumpstart/business/domain/person/Person.java"/>
    <t:sourcecodedisplay src="/business/src/main/java/jumpstart/business/domain/person/Regions.java"/>


package jumpstart.web.pages.together.easycrud;

import java.util.List;

import javax.ejb.EJB;

import jumpstart.business.domain.person.Person;
import jumpstart.business.domain.person.iface.IPersonFinderServiceLocal;
import jumpstart.business.domain.person.iface.IPersonManagerServiceLocal;
import jumpstart.util.ExceptionUtil;

import org.apache.tapestry5.PersistenceConstants;
import org.apache.tapestry5.annotations.Persist;
import org.apache.tapestry5.annotations.Property;

public class Persons {

    private final String demoModeStr = System.getProperty("jumpstart.demo-mode");
    static private final int MAX_RESULTS = 30;

    // Screen fields

    private List<Person> persons;

    private Person person;

    private String errorMessage;

    // Generally useful bits and pieces

    private IPersonFinderServiceLocal personFinderService;

    private IPersonManagerServiceLocal personManagerService;

    // The code

    // setupRender() is called by Tapestry right before it starts rendering the page.

    void setupRender() {
        persons = personFinderService.findPersons(MAX_RESULTS);

    // Handle event "delete"

    void onDelete(Long id, Integer version) {
        if (demoModeStr != null && demoModeStr.equals("true")) {
            errorMessage = "Sorry, but this function is not allowed in Demo mode.";

        try {
            personManagerService.deletePerson(id, version);
        catch (Exception e) {
            // Display the cause. In a real system we would try harder to get a user-friendly message.
            errorMessage = ExceptionUtil.getRootCauseMessage(e);


body, td        { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 13px; font-weight: normal; color: #333;
                    line-height: 17px; }
h1              { font-size: 26px; line-height: 20px; } /* For IE 7 */

.eg             { margin: 20px 0; padding: 20px; 
                    border: 1px solid #ddd; border-radius: 4px; -webkit-border-radius: 4px; -mox-border-radius: 4px; }

a               { text-decoration: none; color: #3D69B6; }
a:hover         { text-decoration: underline; }

    The following elements demonstrate one way to override Tapestry's Grid CSS.
    Another way is to assign a your own CSS class in Grid's class parameter. 

img.t-sort-icon         { vertical-align: bottom; }
div.t-data-grid         { font-family: Arial, Helvetica, sans-serif; }
table.t-data-grid tbody tr:hover    { background-color: #eeeeee; }
table.t-data-grid th    { width: 130px; }
table.t-data-grid th a  { text-decoration: none; }

table.t-data-grid thead tr  { 
                    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#8DA9FF', endColorstr='#738FE6'); /* for IE */
                    background: -webkit-gradient(linear, left top, left bottom, from(#8DA9FF), to(#738FE6)); /* for webkit browsers */
                    background: -moz-linear-gradient(top, #8DA9FF, #738FE6); /* for firefox 3.6+ */ }


// Based on http://wiki.apache.org/tapestry/Tapestry5AndJavaScriptExplained

package jumpstart.web.mixins;

import org.apache.tapestry5.BindingConstants;
import org.apache.tapestry5.ClientElement;
import org.apache.tapestry5.annotations.AfterRender;
import org.apache.tapestry5.annotations.Import;
import org.apache.tapestry5.annotations.InjectContainer;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.ioc.annotations.Inject;
import org.apache.tapestry5.json.JSONObject;
import org.apache.tapestry5.services.javascript.JavaScriptSupport;

 * A simple mixin for attaching a javascript confirmation box to the onclick event of any component that implements
 * ClientElement.
 * @author <a href="mailto:chris@thegodcode.net">Chris Lewis</a> Apr 18, 2008
// The @Import tells Tapestry to put a link to the file in the head of the page so that the browser will pull it in. 
@Import(library = "Confirm.js")
public class Confirm {

    @Parameter(name = "message", value = "Are you sure?", defaultPrefix = BindingConstants.LITERAL)
    private String message;

    private JavaScriptSupport javaScriptSupport;

    private ClientElement clientElement;

    public void afterRender() {

        // Tell the Tapestry.Initializer to do the initializing of a Confirm, which it will do when the DOM has been
        // fully loaded.

        JSONObject spec = new JSONObject();
        spec.put("elementId", clientElement.getClientId());
        spec.put("message", message);
        javaScriptSupport.addInitializerCall("confirm", spec);



// Based on http://wiki.apache.org/tapestry/Tapestry5AndJavaScriptExplained

// A class that attaches a confirmation box (with logic)  to
// the 'onclick' event of any HTML element.
// @author Chris Lewis Apr 18, 2008 <chris@thegodcode.net>

Confirm = Class.create({
    initialize: function(elementId, message) {
        this.message = message;
        Event.observe($(elementId), 'click', this.doConfirm.bindAsEventListener(this));
    doConfirm: function(e) {
        // Pop up a javascript Confirm Box (see http://www.w3schools.com/js/js_popup.asp)
        if (!confirm(this.message)) {

// Extend the Tapestry.Initializer with a static method that instantiates a Confirm.

Tapestry.Initializer.confirm = function(spec) {
    new Confirm(spec.elementId, spec.message);


package jumpstart.business.domain.person;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;

 * The Person entity.
public class Person implements Serializable {

    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(nullable = false)
    private Long id;

    @Column(nullable = false)
    private Integer version;

    @Column(length = 10, nullable = false)
    private String firstName;

    @Column(length = 10, nullable = false)
    private String lastName;
    private Regions region;

    private Date startDate;

    public String toString() {
        final String DIVIDER = ", ";
        StringBuilder buf = new StringBuilder();
        buf.append(this.getClass().getSimpleName() + ": ");
        buf.append("id=" + id + DIVIDER);
        buf.append("version=" + version + DIVIDER);
        buf.append("firstName=" + firstName + DIVIDER);
        buf.append("lastName=" + lastName + DIVIDER);
        buf.append("region=" + region + DIVIDER);
        buf.append("startDate=" + startDate);
        return buf.toString();

    // Default constructor is required by EJB3.
    public Person() {

    public Person(String firstName, String lastName, Regions region, Date startDate) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.region = region;
        this.startDate = startDate;

    // The need for an equals() method is discussed at http://www.hibernate.org/109.html
    public boolean equals(Object obj) {
        return (obj == this) || (obj instanceof Person) && id != null && id.equals(((Person) obj).getId());

    // The need for a hashCode() method is discussed at http://www.hibernate.org/109.html

    public int hashCode() {
        return id == null ? super.hashCode() : id.hashCode();

    public void validate() throws ValidationException {

        // Validate syntax...

        if ((firstName == null) || (firstName.trim().length() == 0)) {
            throw new ValidationException("First name is required.");

        if ((lastName == null) || (lastName.trim().length() == 0)) {
            throw new ValidationException("Last name is required.");

        if (region == null) {
            throw new ValidationException("Region is required.");

        if (startDate == null) {
            throw new ValidationException("Start date is required.");


    public Long getId() {
        return id;

    public Integer getVersion() {
        return version;

    public void setVersion(Integer version) {
        this.version = version;

    public String getFirstName() {
        return firstName;

    public void setFirstName(String firstName) {
        this.firstName = firstName;

    public String getLastName() {
        return lastName;

    public void setLastName(String lastName) {
        this.lastName = lastName;

    public Regions getRegion() {
        return region;

    public void setRegion(Regions region) {
        this.region = region;

    public Date getStartDate() {
        return startDate;

    public void setStartDate(Date startDate) {
        this.startDate = startDate;



package jumpstart.business.domain.person;

public enum Regions {