Bug 137176 It takes unacceptable long time to render a report
Description: Get the attached report design, preview in report designer. It takes unacceptable long time to render a report, and users could not get the output finally. Even during the rending, the computer could not do anything else.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
import java.io.File;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import org.apache.axis.AxisFault;
/**
 * Utilites class for all types of URl related operatnios.
 * <p>
 */
public class ParameterAccessor
{
	
	/**
	 * Servlet path for parameter model.
	 */
	public static final String SERVLET_PATH_PARAMETER = "/parameter"; 
	/**
	 * Servlet path for preview model.
	 */
	public static final String SERVLET_PATH_PREVIEW = "/preview";