Bug 202254 Exception is thrown when category values are null and type of X axis is set to DateTime
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/data/DataPackage.java
/***********************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Actuate Corporation - initial API and implementation
 ***********************************************************************/
package org.eclipse.birt.chart.model.data;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
/**
 * <!-- begin-user-doc --> The <b>Package </b> for the model. It contains
 * accessors for the meta objects to represent
 * <ul>
 * <li>each class,</li>
 * <li>each feature of each class,</li>
 * <li>each enum,</li>
 * <li>and each data type</li>
 * </ul>
 * <!-- end-user-doc --> <!-- begin-model-doc -->
 * 
 * Schema file for the chart.model package.
 * 
 * <!-- end-model-doc -->