Clearing the report from cache....

Hello all,,,
In my project iam using crystsal report for eclipse to generate reports.
Iam using a .jsp page to call my report.(which i got it from the examples of CRE).
The name of my jsp page is poi.jsp
The name of my Crystal report is CrystalReport2.rpt
My problem is this....
when i run the report first time i can see my poi.jsp page and user can submit
the parameter and based on the users parameter the report is generated..(ITs working absoultely fine)but when the user runs the report again, its not showing the parameter page (i.e user cannot see poi.jsp) rather its showing the old generated report.
When i tried using session.invalidate and session.removeAttribute it was showing me the poi.jsp page but the problem is when the user clicks on the print icon or any icon on the report its just showing the poi.jsp page...
When the user closes the report or when the clicks on the button to generate the report it should show the parameter page (poi.jsp).how can i solve this problem???
the code what iam using is as follows..( got it from the examples of CRE - database login )
          response.setHeader("Cache-Control","no-cache");
          response.setHeader("Pragma","no-cache");
          response.setDateHeader("Expires",-1);
          response.setHeader("Cache-Control","no-store");
          Object reportSource = session.getAttribute("reportSource");
        if (reportSource == null )
            String report = "CrystalReport2.rpt";
            ReportClientDocument reportClientDoc = new ReportClientDocument();
            reportClientDoc.open(report, 0);
            reportSource = reportClientDoc.getReportSource();
            session.setAttribute("reportSource", reportSource);
        ConnectionInfos connInfos = new ConnectionInfos();
        IConnectionInfo connInfo1 = new ConnectionInfo();
        connInfo1.setUserName("CS22USER");
        connInfo1.setPassword("CS22USER");
        connInfos.add(connInfo1);
        CrystalReportViewer viewer = new CrystalReportViewer();
        viewer.setReportSource(reportSource);
          viewer.setEnableLogonPrompt(false);
        viewer.setDatabaseLogonInfos(connInfos);
        if (session.getAttribute("refreshed") == null)
             viewer.refresh();
             session.setAttribute("refreshed", "true");
             //response.sendRedirect("Test.jsp");
              //session.removeAttribute("refreshed");
              //session.invalidate();
              //session.removeAttribute("refreshed");
        viewer.setOwnPage(true);
        viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), null);
        //session.invalidate();

CrystalReportViewer viewer = new CrystalReportViewer();
viewer.setReportSource(reportSource);
     viewer.setReportSource(reportSource);
     viewer.setHasRefreshButton(true);
     viewer.setOwnPage(true);
     viewer.setOwnForm(true);
     viewer.setHasExportButton(true);
     viewer.setZoomFactor(100);
     viewer.setPrintMode(CrPrintMode.ACTIVEX);
    viewer.setParameterFields(fields);
viewer.setEnableParameterPrompt(true); --this line will prompt

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Help neede very very urgently ... to clear the report from Cache.....

Hello all,,,
In my project iam using crystsal report for eclipse to generate reports.
Iam using a .jsp page to call my report.(which i got it from the examples of CRE).
The name of my jsp page is poi.jsp
The name of my Crystal report is CrystalReport2.rpt
My problem is this....
when i run the report first time i can see my poi.jsp page and user can submit
the parameter and based on the users parameter the report is generated..(ITs working absoultely fine)
but when the user runs the report again, its not showing the parameter page (i.e user cannot see poi.jsp)
rather its showing the old generated report.
When i tried using session.invalidate and session.removeAttribute it was showing me the poi.jsp page
but the problem is when the user clicks on the print icon or any icon on the report its just
showing the poi.jsp page...
When the user closes the report or when the clicks on the button to generate the report it should
show the parameter page (poi.jsp).how can i solve this problem???
the code what iam using is as follows..( got it from the examples of CRE - database login )
Object reportSource = session.getAttribute("reportSource");
if (reportSource == null)
String report = "CrystalReport2.rpt";
ReportClientDocument reportClientDoc = new ReportClientDocument();
reportClientDoc.open(report, 0);
reportSource = reportClientDoc.getReportSource();
session.setAttribute("reportSource", reportSource);
ConnectionInfos connInfos = new ConnectionInfos();
IConnectionInfo connInfo1 = new ConnectionInfo();
connInfo1.setUserName("USER");
connInfo1.setPassword("USER");
connInfos.add(connInfo1);
CrystalReportViewer viewer = new CrystalReportViewer();
viewer.setReportSource(reportSource);
viewer.setEnableLogonPrompt(false);
viewer.setDatabaseLogonInfos(connInfos);
if (session.getAttribute("refreshed") == null)
viewer.refresh();
session.setAttribute("refreshed", "true");
viewer.setOwnPage(true);
viewer.processHttpRequest(request, response, getServletConfig().getServletContext(), null);
//session.removeAttribute("refreshed");
//session.invalidate();
thanks in advance
regards
jack

As far as parameter refresh is concerned add in your code
viewer.setHasRefreshButton(true)
refresh button is appeared on crystal report toolbar and you can use this button instead of explorer refrsh button and every time you can add new parameters values.
Also, if you want to update reportsource in session object. means if user wants to view more than one different reports and want to invalidate reportsource form session.
add in jsp.
session.removeAttribute("reportSource");
Happy programming
Uzma

How to clear the report from Cache.

Hello all,,,
In my project iam using crystsal report for eclipse to generate reports.
Iam using a .jsp page to call my report.(which i got it from the examples of CRE).
The name of my jsp page is poi.jsp
The name of my Crystal report is Department.rpt
My problem is this....
when i run the report first time i can see my poi.jsp page and user can submit
the parameter and based on the users parameter the report is generated..(ITs working absoultely fine)
but when the user runs the report again, its not showing the parameter page (i.e user cannot see poi.jsp)
rather its showing the old generated report.
When i tried using session.invalidate and session.removeAttribute it was showing me the poi.jsp page
but the problem is when the user clicks on the print icon or any icon on the report its just
showing the poi.jsp page...
When the user closes the report or when the clicks on the button to generate the report it should
show the parameter page (poi.jsp).how can i solve this problem???
the code what i am using is as follows
try {
          String reportName = "C:/workspace/Reports/WebContent/Department.rpt";
          ReportClientDocument clientDoc = (ReportClientDocument) session.getAttribute(reportName);
          if (clientDoc == null) {
               // Report can be opened from the relative location specified in the CRConfig.xml, or the report location
               // tag can be removed to open the reports as Java resources or using an absolute path
               // (absolute path not recommended for Web applications).
               clientDoc = new ReportClientDocument();
               clientDoc.setReportAppServer(ReportClientDocument.inprocConnectionString);
               // Open report
               clientDoc.open(reportName, OpenReportOptions._openAsReadOnly);
               // ****** BEGIN SET RUNTIME DATABASE CREDENTIALS ****************
                    String connectString = "jdbc:oracle:thin:@192.168.1.4:1521:orcl";
                    String driverName = "oracle.jdbc.driver.OracleDriver";
                    String JNDIName = "orcl";
                    String userName = "act_db";               // TODO: Fill in database user
                    String password = "act_db";          // TODO: Fill in password
                    // Switch all tables on the main report and sub reports
                    CRJavaHelper.changeDataSource(clientDoc, userName, password, connectString, driverName, JNDIName);
                    // logon to database
                    CRJavaHelper.logonDataSource(clientDoc, userName, password);
               // ****** END SET RUNTIME DATABASE CREDENTIALS ****************
               // ****** BEGIN CONNECT PARAMETERS SNIPPET ****************
                    // STRING VALUE PARAMETER.
                    String stringValue = request.getParameter("DeptId");;     // TODO: Fill in value
                    CRJavaHelper.addDiscreteParameterValue(clientDoc, "", "DeptId", stringValue);
               // ****** END CONNECT PARAMETERS SNIPPET ****************
               // Store the report document in session
               session.setAttribute(reportName, clientDoc);
          // ****** BEGIN CONNECT CRYSTALREPORTPAGEVIEWER SNIPPET ****************
               // Create the CrystalReportViewer object
               CrystalReportViewer crystalReportPageViewer = new CrystalReportViewer();
               String reportSourceSessionKey = reportName+"ReportSource";
               session.removeAttribute("reportSource");
               Object reportSource = session.getAttribute(reportSourceSessionKey);
               if (reportSource == null)
                    reportSource = clientDoc.getReportSource();
                    session.setAttribute(reportSourceSessionKey, reportSource);
               //     set the reportsource property of the viewer
               crystalReportPageViewer.setReportSource(reportSource);
               crystalReportPageViewer.setDisplayGroupTree(false);
             session.removeValue("reportSource");
               crystalReportPageViewer.setHasRefreshButton(true);
               // Apply the viewer preference attributes
               // Process the report
               crystalReportPageViewer.processHttpRequest(request, response, application, null);
          // ****** END CONNECT CRYSTALREPORTPAGEVIEWER SNIPPET ****************
     } catch (ReportSDKExceptionBase e) {
         out.println(e);
Thanks In advance
Regards,
Amol Patil

CrystalReportViewer viewer = new CrystalReportViewer();
viewer.setReportSource(reportSource);
     viewer.setReportSource(reportSource);
     viewer.setHasRefreshButton(true);
     viewer.setOwnPage(true);
     viewer.setOwnForm(true);
     viewer.setHasExportButton(true);
     viewer.setZoomFactor(100);
     viewer.setPrintMode(CrPrintMode.ACTIVEX);
    viewer.setParameterFields(fields);
viewer.setEnableParameterPrompt(true); --this line will prompt

Clear the applet from cache

Hello,
I use the following html code to open my signed java applet.
<APPLET CODE="Applet.class" ARCHIVE="applet.jar" WIDTH=100 HEIGHT=100>However if I make some changes into the applet code and open the HTML file in the browser, I see that the applet is being picked up from the applet cache. Thus if users have caching enabled on their systems they will not be able to retrieve the new version that I have made.
Is there a way to trigger the browser to download not to use the applet from the cache whenever an updated copy is available on the server.
I need this fix for IE, Mozilla, Netscape..
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I am try to run the report from the form by using these code of line
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Its helpful.
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Clearing the report from cache....

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