Bug 131245 [Smoke][Regression]Run Report window in Web View cannot display existed parameteres.
Description: Run Report window in Web View cannot display existed parameteres. Steps to reproduce: 1. New a parameter. 2. Preview in Web Viewer 3. Click Run Report button. Result: No parameter showed.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
* Contributors:
 *     Actuate Corporation - Initial implementation.
 ************************************************************************************/
package org.eclipse.birt.report.context;
import java.io.File;
import java.util.Collection;
import java.util.HashMap;
import java.util.Locale;
import javax.servlet.http.HttpServletRequest;
import org.eclipse.birt.report.engine.api.EngineException;
import org.eclipse.birt.report.engine.api.IGetParameterDefinitionTask;
import org.eclipse.birt.report.engine.api.IReportDocument;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.resource.BirtResources;
import org.eclipse.birt.report.service.ReportEngineService;
import org.eclipse.birt.report.utility.ParameterAccessor;
/**
 * Data bean for viewing request. Birt viewer distributes process logic into
 * viewer fragments. Each fragment seperates its front-end and back-end process
 * into jsp page and "code behand" fragment class. Viewer attribute bean serves
 * as:
 * <ol>
 * <li> object that carries the data shared among different fragments</li>
 * <li> object that carries the date shared between front-end jsp page and
 * back-end class</li>
 * </ol>
 * In current implementation, ViewerAttributeBean uses request scope.
 * <p>
 */
public class ViewerAttributeBean