Bug 362007

Description marc.marshall 2011-10-25 17:02:20 EDT

Build Identifier: 20110218-0911

I have developed a empty birt report that calls the beforeFactory event handler for the report. This event handler dynamically creates the DataSource, Dataset and Report contents. I am currently testing on a Tomcat server using the Birt Runtime 2.6. I ran a batch file to call my report 40 times one right after another and all of the reports were created successfully. If I try to load 8 files asynchronously I get random errors like "Can not load the report query: 372. Errors occurred when generating the report document for the report element with ID 372. ", "Page hint could not be loaded", and blank pages are just a few. Sometimes all of the reports are created successfully. I am confused why these errors are happening.

I have the report inside a report folder inside of a Birt runtime running in Tomcat. My report has one event handler for the report level (BeforeFactory). The BeforeFactory method calls the BuildReport method below:

private void buildReport(IReportContext reportContext) throws IOException,
SemanticException {
ReportDesignHandle rd = null;
String vname = "";
String vtype = "";
String vnumber = "";
//logger.error("buildReport: ");
try {
elementFactory = reportContext.getReportRunnable()
.getDesignHandle().getElementFactory();
rd = (ReportDesignHandle) reportContext.getReportRunnable()
.getDesignHandle();

rd = buildDataSource(rd);

vname = reportContext.getParameterDisplayText("VendorName");
vnumber = reportContext.getParameterDisplayText("VendorNumber");
vtype = reportContext.getParameterDisplayText("ServiceType");
rd = buildDataSet(rd, vname, vnumber, vtype);

// get a reference to the ElementFactory
LabelHandle label;
label = getLabelHeader();

TableHandle table = elementFactory.newTableItem("table",
cols.length);

table = setTableSettings(table);

table.setWidth("100%");

table.setDataSet(rd.findDataSet("ds"));

table = buildExpressions(table);

// table header
table = buildTableHeaders(table);

// table detail
table = buildRowData(table);

rd.getBody().add(label);
rd.getBody().add(table);

} catch (Exception e) {
logger.error(new StringBuffer("buildReport method error: ")
.append(e.toString()));

}

}

This code is placed in my WEB-INF classes folder. Please let me know if you need more information.

am using Tomcat 6.0.32 and Birt Runtime 2.6.2. I use http://localhost:8080/birt-viewer/frameset?__report=report/Dynamic_Vendor.rptdesign to call my report. It appears that some times my code is never executed. I placed a logger statement at the beginning of my event handler and sometimes I never see the log statement. I removed my Event handler from my report and ran the same test. Most of the time it renders the empty report. One time I ran it said that it could not render the report "Failed to open report". This is one of the error that keep popping up.





Reproducible: Sometimes