Bug 315315 Warning messages seen while starting up workbench
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/impl/SerializerImpl.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.impl;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.birt.chart.computation.IConstants;
import org.eclipse.birt.chart.model.Chart;
import org.eclipse.birt.chart.model.ModelPackage;