userreportformcontroller.java

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package mcaps.core.reporting.webapp.controller;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;

import mcap.core.base.webapp.controller.BaseFormController;
import mcap.core.logging.Log;
import mcap.core.reporting.model.Report;
import mcap.core.reporting.model.ReportParameter;
import mcap.core.reporting.model.SubReport;
import mcap.core.reporting.service.ReportManager;
import mcap.core.reporting.util.JasperReportDesignUtil;
import mcap.core.reporting.util.NameConstants;
import mcaps.core.reporting.webapp.view.JasperReportEnhancedMultiFormatView;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextException;
import org.springframework.validation.BindException;
import org.springframework.web.context.support.WebApplicationContextUtils;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.view.RedirectView;


/**
 * Implementation of BaseFormController that handle request to 
 * generate dynamic report. The request should contain information
 * pertaining to the report as well as the data for each report 
 * parameter(s) in order for the report to be generated. 
 * 
 * This controller class does not provide any input validation but 
 * accept the inputs which has been verified by UserReportValidateFormController 
 * that are then redirected to a web page before submited to this controller.  
 * 
 * The separation of input validation is to facilitate the display of error 
 * messages on the same web page and display of the report after the validation
 * in a new web page.
 *  
 * @author jov
 * @date May 18, 2006
 * @version 1.0.2.0
 */
public class UserReportFormController extends BaseFormController {

	private ReportManager reportManager;
	
	/**
	 * Returns the reportManager.
	 * @return ReportManager
	 */
	public ReportManager getReportManager() {
		return reportManager;
	}

	/**
	 * Sets the reportManager.
	 * @param reportManager The reportManager to set.
	 */
	public void setReportManager(ReportManager reportManager) {
		this.reportManager = reportManager;
	}

	//===========================================================================================================
	//INITIALIZING BEAN IMPLEMENTATION
	//===========================================================================================================

	/* (non-Javadoc)
	 * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
	 * Invoked by a BeanFactory after it has set all bean properties supplied. This allows 
	 * the bean instance to perform initialization only possible when all bean properties 
	 * have been set and to throw an exception in the event of misconfiguration. 
	 */
	public void afterPropertiesSet() throws Exception {
		if (reportManager == null){
			Log.warn("Must set reportManager bean property on " + getClass());
			throw new ApplicationContextException(
					"Must set reportManager bean property on " + getClass());
		}
	}


	/* (non-Javadoc)
	 * @see org.springframework.web.servlet.mvc.AbstractFormController#processFormSubmission(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Object, org.springframework.validation.BindException)
	 * Checks for an action that should be executed without respect to binding errors, like a cancel action.
	 */
	public ModelAndView processFormSubmission(HttpServletRequest request,
			HttpServletResponse response, Object command, BindException errors)
			throws Exception {
		if (request.getParameter("cancel") != null) {			
			if (request.getParameter("from") != null) {			
				if (request.getParameter("from").equals("reportlist")){
					return new ModelAndView(new RedirectView(NameConstants.REPORTS_VIEW_URL));
				}
			}
			return new ModelAndView(getSuccessView());
		}
		
		//Validation of parameter values against the parameter types
		//Is written here instead of onBind() due to the need to redirect to 
		//the new view with .action extension because return super.processFormSubmission()
		//will return based on url with extension .pdf, .html or .xls which will not be
		//processed by site mesh

		Enumeration paramNames = request.getParameterNames();
		StringBuffer msgBuffer = null;
		StringBuffer paramValueBuffer = new StringBuffer();
		
		while (paramNames.hasMoreElements()) {
			String name = (String) paramNames.nextElement();
			if ((name.startsWith("_")) && (!name.endsWith("_valueClassName"))) {
				
				String paramName = name.substring(1);
				String value = request.getParameter(name);
				String valueType = request.getParameter(name + "_valueClassName");
				
				//Save the value of the parameter name and parameter value to be appended
				//to the redirect url as query string. The value will be retrieved in 
				//formBackingObject()
				paramValueBuffer.append("&").append(name).append("=").append(value);
				
				//Perform field validation
				String msg = validateParameter(value, valueType);
				
				//If message is not null, validation error is found.
				//Redirect to the origin page where parameter is submitted.
				if (msg != null) {
					if (msgBuffer == null){
						msgBuffer = new StringBuffer();
						msgBuffer.append(getText(msg, 
								new Object[] { paramName },
								request.getLocale()));
					}else{
						msgBuffer.append("<br>").append(getText(msg, 
								new Object[] { paramName },
								request.getLocale()));
					}
				}
			}			
		}
		if (msgBuffer != null){
			String reportName = request.getParameter("reportName");
			saveError(request, msgBuffer.toString());
			return new ModelAndView(new RedirectView(
					new StringBuffer()
					.append("userReportForm.action?reportName=")
					.append(reportName)
					.append(paramValueBuffer.toString()).toString()));
		}
		return super.processFormSubmission(request, response, command, errors);
	}

	/* (non-Javadoc)
	 * @see org.springframework.web.servlet.mvc.SimpleFormController#onSubmit(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Object, org.springframework.validation.BindException)
	 * Next to be called if processFormSubmission method called the
	 * super.processFormSubmission
	 */
	public ModelAndView onSubmit(HttpServletRequest request,
			HttpServletResponse response, Object command, BindException errors)
			throws Exception {

		Report report = (Report) command;

		String format = request.getParameter("format");
		Log.info("Report format : " + format);

		Map model = new HashMap ();
		model.put ("format", format);
		
		Enumeration paramNames = request.getParameterNames();
		
		while(paramNames.hasMoreElements()) {
			String paramName = (String)paramNames.nextElement();
			if ((paramName.startsWith("_")) && (!paramName.endsWith("_valueClassName"))){
				String value = request.getParameter(paramName);
				String name = paramName.substring(1);
				Object obj = null;
				if (value != null){
					if (value.length() > 0){
						obj = getValue(value,request.getParameter(paramName + "_valueClassName"));
					}
				}
				Log.info("Report parameter : " + name + " (" + obj + ")");
				Log.debug("Report parameter : " + name + " (" + obj + ")");
				model.put (name, obj);
			}
		}
		
	
		
		ServletContext servletContext = getServletContext();
		ApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext (servletContext);
		DataSource ds = (DataSource) ctx.getBean("dataSource");
		
	//	DataSource ds = (DataSource)jndiTemplate.lookup("java:comp/env/jdbc/" + report.getJndiDataSourceName());
		JasperReportEnhancedMultiFormatView view = new JasperReportEnhancedMultiFormatView();
		String binaryFile = report.getSourceFile().substring(0,report.getSourceFile().lastIndexOf("."));
		binaryFile += ".jasper";
		
		view.setUrl(binaryFile);
		Log.debug("Report url : " + binaryFile);
		
		Report detailedReport = this.getReportManager().getReport(report.getName());
		
		//set sub report urls
		Properties props = new Properties();
		for (int i=0; i < detailedReport.getSubReports().size(); i++){
			SubReport subReport = (SubReport)detailedReport.getSubReports().get(i);
			if ((subReport.getSourceFile() != null) || (subReport.getSourceFile().length() > 0)){
				props.setProperty(subReport.getName(),subReport.getSourceFile());
				Log.debug("Report sub report url : " + subReport.getName() + " (" + subReport.getSourceFile() + ")");
			}
		}
		if (props.size() > 0) view.setSubReportUrls(props);
		
		view.setJdbcDataSource(ds);
		view.setApplicationContext(this.getApplicationContext());
		view.setContentType(getContentType(format));
		if (format.equals("html")){
			Map imagesMap = new HashMap();
			request.getSession().setAttribute("IMAGES_MAP", imagesMap);

			Map paramMap = new HashMap();
			paramMap.put(JRHtmlExporterParameter.IMAGES_MAP,imagesMap);