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Render while report is generated [message #791333]

Sun, 05 February 2012 12:10

harip kaligo
Messages: 74
Registered: July 2011

Member

Hi,

We need to render report while report is being generated. For example, we have some 100 pages of report and first three pages are rendered, we need to display the three pages rendered and the rest as they are rendered. We need this as the customer need not wait for the entire report to be rendered.

we are using report tag to display the rptdocument.We also use run and then render options to generate reports.

Environment:
Jdk:1.5
BIRT3.7
Weblogic 10.0.2

Any ideas or sample program on how to implement this would be of great help.

Also, what does task.enableProgressiveViewing() does?

Thanks,
KKP

[Updated on: Mon, 06 February 2012 06:19]

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Re: Render while report is generated [message #792367 is a reply to message #791333]

Mon, 06 February 2012 18:15

Jason Weathersby
Messages: 9167
Registered: July 2009

Senior Member

Currently the open source viewer does not have that feature. Actuate's
commercial viewer does though.

Jason

On 2/5/2012 12:10 PM, kkp Mising name wrote:
> Hi,
>
> We need to render report while report is being generated. For example,
> we have some 100 pages of report and first three pages are rendered, we
> need to display the three pages rendered and the rest as they are
> rendered. We need this as the customer need not wait for the entire
> report to be rendered.
>
> we are using report tag to display the rptdocument.We also use run and
> then render options to generate reports.
>
> Environment:
> Jdk:1.5
> BIRT3.7
> Weblogic 10.0.2
>
> Any ideas or sample program on how to implement this would be of great
> help.
>
> Thanks,
> KKP

Jason Weathersby

BIRT Exchange

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Re: Render while report is generated [message #867213 is a reply to message #792367]

Tue, 01 May 2012 03:17

sam va
Messages: 120
Registered: July 2011

Senior Member

We have achieved this with custom code.

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Re: Render while report is generated [message #870768 is a reply to message #792367]

Wed, 09 May 2012 11:05

ivkina Mising name
Messages: 34
Registered: April 2012

Member

Jason,
Viewing report while it is still being built works for us in 3.7.1. It is achieved by this line of code called on IRunTask:
task.enableProgressiveViewing(true);

Are you saying that this feature is not supported anymore in 3.7.2 and going forward and only Actuate BIRT supports that? This is important...could you please confirm 100%?

Thanks,
Aleksey

IReportRunnable design = engine.openReportDesign(rox);
// change design time settings via Birt Designer API
BirtDesignHandle designHandle = new BirtDesignHandle(design);
// tables - comment for now as this changes the sort order
// designHandle.processTables();
// pages
designHandle.processPages(buildReq);
// create run task
IRunTask task = engine.createRunTask(design);
// locale
task.setLocale(Utils.buildLocaleInstance(buildReq.getString(buildReq.LOCALE)));
// set report execution parameters in report bean so these can be
// accessed by BIRT runtime on start report build.
setReportExecutionParmsInRptEJB(buildReq);
task.setParameterValue(APP_DATA_PARM, buildReportExcecutionParms(buildReq));
// progressive view -> true for preview; false for print
task.enableProgressiveViewing(buildReq.getboolean(buildReq.PRGR_VIEW));
// page handler
task.setPageHandler(new BirtPageHandler(buildReq, logger));
// task info
BirtTaskInfo taskInfo = new BirtTaskInfo(roi);
taskInfo.setRunTask(task);
res.set(res.VIEW_STATE_INFO, taskInfo);
res.set(res.JOB_ID, new Integer(task.getID()));
// run task
WorkManager workManager = birtEngine.getWorkManager();
workManager.startWork(new BirtTaskRunnable(taskInfo));

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Re: Render while report is generated [message #870773 is a reply to message #867213]

Wed, 09 May 2012 11:24

ivkina Mising name
Messages: 34
Registered: April 2012

Member

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Re: Render while report is generated [message #870808 is a reply to message #870768]

Wed, 09 May 2012 14:30

Jason Weathersby
Messages: 9167
Registered: July 2009

Senior Member

Aleksey,

That feature has not changed. That reply was in relation to the viewer
framework I believe.

Jason

On 5/9/2012 11:06 AM, ivkina Mising name wrote:
> Jason,
> Viewing report while it is still being built works for us in 3.7.1. It
> is achieved by this line of code called on IRunTask:
> task.enableProgressiveViewing(true);
>
> Are you saying that this feature is not supported anymore in 3.7.2 and
> going forward and only Actuate BIRT supports that? This is
> important...could you please confirm 100%?
>
> Thanks,
> Aleksey
>
> IReportRunnable design = engine.openReportDesign(rox);
> // change design time settings via Birt Designer API
> BirtDesignHandle designHandle = new BirtDesignHandle(design);
> // tables - comment for now as this changes the sort order
> // designHandle.processTables();
> // pages
> designHandle.processPages(buildReq);
> // create run task
> IRunTask task = engine.createRunTask(design);
> // locale
> task.setLocale(Utils.buildLocaleInstance(buildReq.getString(buildReq.LOCALE)));
>
> // set report execution parameters in report bean so these can be
> // accessed by BIRT runtime on start report build.
> setReportExecutionParmsInRptEJB(buildReq);
> task.setParameterValue(APP_DATA_PARM,
> buildReportExcecutionParms(buildReq));
> // progressive view -> true for preview; false for print
> task.enableProgressiveViewing(buildReq.getboolean(buildReq.PRGR_VIEW));
> // page handler
> task.setPageHandler(new BirtPageHandler(buildReq, logger));
> // task info
> BirtTaskInfo taskInfo = new BirtTaskInfo(roi);
> taskInfo.setRunTask(task);
> res.set(res.VIEW_STATE_INFO, taskInfo);
> res.set(res.JOB_ID, new Integer(task.getID()));
> // run task
> WorkManager workManager = birtEngine.getWorkManager();
> workManager.startWork(new BirtTaskRunnable(taskInfo));

Jason Weathersby

BIRT Exchange

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Re: Render while report is generated [message #871036 is a reply to message #870808]

Thu, 10 May 2012 11:22

ivkina Mising name
Messages: 34
Registered: April 2012

Member

got it, thanks!

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Re: Render while report is generated [message #932454 is a reply to message #871036]

Thu, 04 October 2012 01:45

Vijay Patel
Messages: 3
Registered: October 2012

Junior Member

hi,

please mention where to change the code, and add this single line of code.
is it rptdesign file or any java file.

please reply, I need this information.

thank you very much.

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Re: Render while report is generated [message #932980 is a reply to message #932454]

Thu, 04 October 2012 12:24

Jason Weathersby
Messages: 9167
Registered: July 2009

Senior Member

That is Java code when using the BIRT report engine APIs

Jason

Jason Weathersby

BIRT Exchange

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Re: Render while report is generated [message #957626 is a reply to message #791333]

Thu, 25 October 2012 07:17

Saurabh Puri
Messages: 10
Registered: February 2012

Junior Member

Hi..

I am trying to display the report on report viewer and at the same time i am trying to render the report as pdf to save automatically to a folder on server....

My report extends to multiple pages and the problem is that when i press next button on Birtviewer, it renders again to create another copy of pdf. (so if my report has 10 pages, it creates 10 copies of same report in pdf in that folder)

I tried setting a global variable which i can use in the if condition to run the beforerender() code once, but somehow it doesnt seem to be working fine.

Please let me know the way out of this.

This is the code i am using to render as pdf (placed under beforeRender function)

if(reportContext.getPersistentGlobalVariable('g_var').equals("1"))
{

reportContext.setPersistentGlobalVariable("g_var","2");

mmap = reportContext.getHttpServletRequest().getAttribute("attributeBean").getModuleOptions();
rptdoc = reportContext.getHttpServletRequest().getAttribute("attributeBean").getReportDocumentName();

importPackage(Packages.org.eclipse.birt.report.engine.api);
importPackage(Packages.java.io)
var re = reportContext.getReportRunnable().getReportEngine();
var mdocument = re.openReportDocument(null,rptdoc, mmap);
var options = new PDFRenderOption();
baos = new ByteArrayOutputStream();
options.setOutputFormat("pdf");
options.setOutputStream(baos);

var ntask = re.createRenderTask(mdocument);
ntask.setRenderOption(options);
ntask.render();
ntask.close();
mdocument.close();

str = "blabla";

success1 = (new File("../webapps/ReportGen/BIRTReports")).mkdir(); //create directory
var path = "myreport_" + str;

fout = new FileOutputStream("../webapps/ReportGen/BIRTReports/"+path); //This name needs to be dynamic
fout.write(baos.toByteArray());
fout.flush();
fout.close();
//g_var = "2";
}

Thanks

[Updated on: Thu, 25 October 2012 07:18]

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Re: Render while report is generated [message #989237 is a reply to message #791333]

Wed, 05 December 2012 05:23

Saurabh Puri
Messages: 10
Registered: February 2012

Junior Member

Hi,

I am rendering the pdf file to a location on server.

Is there any way to avoid rendering the report to pdf file again & again while one scroll through different pages of report on birtviewer?

Thanks

Saurabh

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