Load a DataSource from XML Schema, extend schema with SmartGWT-specific presentation attributes, and bind the Grid and Form to it (Smart GWT) : DataSource « GWT « Java

Load a DataSource from XML Schema, extend schema with SmartGWT-specific presentation attributes, and bind the Grid and Form to it (Smart GWT)

Load a DataSource from XML Schema, extend schema with SmartGWT-specific presentation attributes, and bind the Grid and Form to it (Smart GWT)
 * SmartGWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 * SmartGWT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.  SmartGWT is also
 * available under typical commercial license terms - see
 * http://smartclient.com/license
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * Lesser General Public License for more details.
package com.smartgwt.sample.showcase.client;

import java.util.Date;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.data.DSRequest;
import com.smartgwt.client.data.DataSource;
import com.smartgwt.client.data.SchemaSet;
import com.smartgwt.client.data.XMLTools;
import com.smartgwt.client.data.XSDLoadCallback;
import com.smartgwt.client.data.fields.DataSourceBooleanField;
import com.smartgwt.client.data.fields.DataSourceDateField;
import com.smartgwt.client.data.fields.DataSourceEnumField;
import com.smartgwt.client.data.fields.DataSourceFloatField;
import com.smartgwt.client.data.fields.DataSourceIntegerField;
import com.smartgwt.client.data.fields.DataSourceTextField;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.validator.FloatPrecisionValidator;
import com.smartgwt.client.widgets.form.validator.FloatRangeValidator;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridRecord;
import com.smartgwt.client.widgets.layout.VLayout;

public class Showcase implements EntryPoint {
  public void onModuleLoad() {


  public Canvas getViewPanel() {

    final ListGrid listGrid = new ListGrid();

    final DynamicForm dynamicForm = new DynamicForm();

    final IButton validateButton = new IButton("Validate");

    validateButton.addClickHandler(new ClickHandler() {
      public void onClick(ClickEvent event) {


    IButton loadButton = new IButton("Load Schema");
    loadButton.addClickHandler(new ClickHandler() {
      public void onClick(ClickEvent event) {
        XMLTools.loadXMLSchema("data/dataIntegration/xml/supplyItem.xsd", new XSDLoadCallback() {
          public void execute(SchemaSet schemaSet) {
            loadXMLSchemaReply(schemaSet, listGrid, dynamicForm, validateButton);

    VLayout layout = new VLayout(15);

    return layout;

  private void loadXMLSchemaReply(SchemaSet schemaSet, ListGrid listGrid, DynamicForm dynamicForm,
      IButton validateButton) {
    DataSource schemaDS = schemaSet.getSchema("supplyItem");

    DataSource dataSource = new DataSource();

    DataSourceTextField itemID = new DataSourceTextField("itemId");

    DataSourceTextField itemName = new DataSourceTextField("itemName", "item name");
    DataSourceDateField nextShipment = new DataSourceDateField("nextShipment", "next shipment");

    dataSource.setFields(itemID, itemName, nextShipment);


    // to demonstrate grid editors, add sample data and start editing

    listGrid.setData(new ItemRecord[] { new ItemRecord(123, "Sample Item", "1091600", null,
        "Rollfix Glue", "Ea", 3.73, null, null) });

    // to demonstrate validation, use values that will fail validation
    dynamicForm.setValue("unitCost", -1.234);
    dynamicForm.setValue("SKU", "thisSkuIsWayTooLong");



class ItemSupplyLocalDS extends DataSource {

  private static ItemSupplyLocalDS instance = null;

  public static ItemSupplyLocalDS getInstance() {
    if (instance == null) {
      instance = new ItemSupplyLocalDS("supplyItemLocalDS");
    return instance;

  public ItemSupplyLocalDS(String id) {

    DataSourceIntegerField pkField = new DataSourceIntegerField("itemID");

    DataSourceTextField itemNameField = new DataSourceTextField("itemName", "Item Name", 128, true);
    DataSourceTextField skuField = new DataSourceTextField("SKU", "SKU", 10, true);

    DataSourceTextField descriptionField = new DataSourceTextField("description", "Description",
    DataSourceTextField categoryField = new DataSourceTextField("category", "Category", 128, true);

    DataSourceEnumField unitsField = new DataSourceEnumField("units", "Units", 5);
    unitsField.setValueMap("Roll", "Ea", "Pkt", "Set", "Tube", "Pad", "Ream", "Tin", "Bag", "Ctn",

    DataSourceFloatField unitCostField = new DataSourceFloatField("unitCost", "Unit Cost", 5);
    FloatRangeValidator rangeValidator = new FloatRangeValidator();
    rangeValidator.setErrorMessage("Please enter a valid (positive) cost");

    FloatPrecisionValidator precisionValidator = new FloatPrecisionValidator();
    precisionValidator.setErrorMessage("The maximum allowed precision is 2");

    unitCostField.setValidators(rangeValidator, precisionValidator);

    DataSourceBooleanField inStockField = new DataSourceBooleanField("inStock", "In Stock");

    DataSourceDateField nextShipmentField = new DataSourceDateField("nextShipment", "Next Shipment");

    setFields(pkField, itemNameField, skuField, descriptionField, categoryField, unitsField,
        unitCostField, inStockField, nextShipmentField);


  protected Object transformRequest(DSRequest dsRequest) {
    return super.transformRequest(dsRequest);

class ItemData {

  private static ItemRecord[] records;

  public static ItemRecord[] getRecords() {
    if (records == null) {
      records = getNewRecords();
    return records;

  public static ItemRecord[] getNewRecords() {
    return new ItemRecord[] {
        new ItemRecord(
            "Glue Pelikan Roll-fix Permanent #950",
            "A clean no-drips, no brush roll-on glue. Will not dry out. Suitable for artwork, photos or posters. Glue cartridges are 12 metres long. Refillable.",
            "Rollfix Glue", "Ea", 6.96, null, null),
        new ItemRecord(2, "Glue Pelikan Roll-fix Refill Permanent #955", "1089400", null,
            "Rollfix Glue", "Ea", 3.73, null, null),
        new ItemRecord(3, "Glue Pelikan Roll-fix Non Permanent #960", "1090500", null,
            "Rollfix Glue", "Ea", 6.96, null, null),
        new ItemRecord(4, "Glue Pelikan Roll-fix Refill Non Permanent #965", "1091600", null,
            "Rollfix Glue", "Ea", 3.73, null, null) };

class ItemRecord extends ListGridRecord {

  public ItemRecord() {

  public ItemRecord(int itemID, String item, String sku, String description, String category,
      String units, Double unitCost, Boolean inStock, Date nextShipment) {

   * Set the itemID.
   * @param itemID
   *          the itemID
  public void setItemID(int itemID) {
    setAttribute("itemID", itemID);

   * Return the itemID.
   * @return the itemID
  public int getItemID() {
    return getAttributeAsInt("itemID");

   * Set the item.
   * @param item
   *          the item
  public void setItemName(String item) {
    setAttribute("itemName", item);

   * Return the item.
   * @return the item
  public String getItemName() {
    return getAttribute("itemName");

   * Set the SKU.
   * @param SKU
   *          the SKU
  public void setSKU(String SKU) {
    setAttribute("SKU", SKU);

   * Return the SKU.
   * @return the SKU
  public String getSKU() {
    return getAttribute("SKU");

   * Set the description.
   * @param description
   *          the description
  public void setDescription(String description) {
    setAttribute("description", description);

   * Return the description.
   * @return the description
  public String getDescription() {
    return getAttribute("description");

   * Set the category.
   * @param category
   *          the category
  public void setCategory(String category) {
    setAttribute("category", category);

   * Return the category.
   * @return the category
  public String getCategory() {
    return getAttribute("category");

   * Set the units.
   * @param units
   *          the units
  public void setUnits(String units) {
    setAttribute("units", units);

   * Return the units.
   * @return the units
  public String getUnits() {
    return getAttribute("units");

   * Set the unitCost.
   * @param unitCost
   *          the unitCost
  public void setUnitCost(Double unitCost) {
    setAttribute("unitCost", unitCost);

   * Return the unitCost.
   * @return the unitCost
  public Float getUnitCost() {
    return getAttributeAsFloat("unitCost");

   * Set the inStock.
   * @param inStock
   *          the inStock
  public void setInStock(Boolean inStock) {
    setAttribute("inStock", inStock);

   * Return the inStock.
   * @return the inStock
  public Boolean getInStock() {
    return getAttributeAsBoolean("inStock");

   * Set the nextShipment.
   * @param nextShipment
   *          the nextShipment
  public void setNextShipment(Date nextShipment) {
    setAttribute("nextShipment", nextShipment);

   * Return the nextShipment.
   * @return the nextShipment
  public Date getNextShipment() {
    return getAttributeAsDate("nextShipment");



SmartGWT.zip( 9,880 k)

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