External JS function not found in RenderTask

Hi, 
 
I deploy BIRT reports in servlets. On the java side, I use RunTask.run() and RenderTask.render() after each other. 
On the reporting side, I have various calls to external javascript functions which are situated inside a *.js file in the library folder. The functions are called in a chart's beforeDrawAxisLabel() functions etc, but also from the expression of Y Series -> Interactivity -> Tooltip Text Expression. 
 
Now, when I run the RunTask, it works without problems; I log some text inside the js functions and can therefore approve that the function is called. 
Next the RenderTask is run based on the rptdocument which was created before. But when running RenderTask.render() the BIRT Engine throws the exception that it can't find the js function (which was there before!) 
 
It should be noticed that I did call the exact same javascript function before in a non-servlet context (a very similar eclipse project where I can use the report designer preview) and there it gave NO exception. Thus, the javascript file itself and the call and everything should be setup correctly... 
 
Please help as it drives me NUTS! 
Thanks in advance for your help! 
 
I'm working with BIRT 4.2.1, Eclipse Juno SR1, Java 1.7.0_09-b05 and TomCat 7.0.32 
 
<pre class='_prettyXprint _lang-auto _linenums:0'>
SEVERE: ChartReportItemPresentationImpl: onRowSets(...) - failed
Feb 27, 2013 4:16:57 PM org.eclipse.birt.chart.reportitem.ChartReportItemPresentationBase isNoDataException
WARNING: Exception
org.eclipse.birt.chart.exception.ChartException: There are errors evaluating script "var aggregationPeriodString = data["joinPeriodGroup/Date Ranger Data::joinPeriod"];
var aggregationPeriod = params["aggregationPeriod"];
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriodString", aggregationPeriodString);
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriod", aggregationPeriod);
//var aggregationPeriodDescription = icsc.getExternalContext().getScriptable().evaluate("getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);");
var aggregationPeriodDescription = getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);

quantity = 0;
if (data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"] != null){
quantity = data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"];
}
data["userGroupingDimension/UrmLogDataSet::userGrouping"] + " (" + aggregationPeriodDescription + "): " + quantity;":
ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.evaluateRowSet(DataProcessor.java:1459)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.mapToChartResultSet(DataProcessor.java:368)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.generateRuntimeSeries(DataProcessor.java:507)
at org.eclipse.birt.chart.factory.Generator.bindData(Generator.java:721)
at org.eclipse.birt.chart.reportitem.ChartReportItemPresentationBase.bindData(ChartReportItemPresentationBase.java:729)
at org.eclipse.birt.chart.reportitem.ChartReportItemPresentationBase.onRowSets(ChartReportItemPresentationBase.java:855)
at org.eclipse.birt.chart.reportitem.ChartReportItemPresentationProxy.onRowSets(ChartReportItemPresentationProxy.java:108)
at org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor.processExtendedContent(LocalizedContentVisitor.java:1022)
at org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor.localizeForeign(LocalizedContentVisitor.java:578)
at org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor.localize(LocalizedContentVisitor.java:163)
at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportItemExecutor.execute(LocalizedReportItemExecutor.java:37)
at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:65)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:92)
at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:100)
at org.eclipse.birt.report.engine.api.impl.RenderTask$PageRangeRender.render(RenderTask.java:621)
at org.eclipse.birt.report.engine.api.impl.RenderTask.render(RenderTask.java:294)
at de.asweb.reportViewer.ReportHandler.getPdfReport(ReportHandler.java:356)
at de.asweb.reportViewer.ReportHandler.getReport(ReportHandler.java:185)
at de.asweb.reportViewer.ReportControllerServlet.handleRequest(ReportControllerServlet.java:49)
at de.asweb.reportViewer.ReportControllerServlet.doGet(ReportControllerServlet.java:29)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.eclipse.birt.core.exception.CoreException: There are errors evaluating script "var aggregationPeriodString = data["joinPeriodGroup/Date Ranger Data::joinPeriod"];
var aggregationPeriod = params["aggregationPeriod"];
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriodString", aggregationPeriodString);
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriod", aggregationPeriod);
//var aggregationPeriodDescription = icsc.getExternalContext().getScriptable().evaluate("getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);");
var aggregationPeriodDescription = getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);

quantity = 0;
if (data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"] != null){
quantity = data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"];
}
data["userGroupingDimension/UrmLogDataSet::userGrouping"] + " (" + aggregationPeriodDescription + "): " + quantity;":
ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
at org.eclipse.birt.report.engine.javascript.JavascriptEngine.evaluate(JavascriptEngine.java:295)
at org.eclipse.birt.core.script.ScriptContext.evaluate(ScriptContext.java:154)
at org.eclipse.birt.report.engine.executor.ExecutionContext.evaluate(ExecutionContext.java:781)
at org.eclipse.birt.report.engine.executor.ExecutionContext.evaluate(ExecutionContext.java:761)
at org.eclipse.birt.report.engine.executor.ExecutionContext.evaluateInlineScript(ExecutionContext.java:749)
at org.eclipse.birt.report.engine.data.dte.CubeResultSet.evaluate(CubeResultSet.java:197)
at org.eclipse.birt.chart.reportitem.BIRTCubeResultSetEvaluator.evaluate(BIRTCubeResultSetEvaluator.java:128)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.evaluateRowSet(DataProcessor.java:1439)
... 37 more
Caused by: org.mozilla.javascript.EcmaError: ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3654)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3632)
at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3717)
at org.mozilla.javascript.ScriptRuntime.nameOrFunction(ScriptRuntime.java:1758)
at org.mozilla.javascript.ScriptRuntime.getNameFunctionAndThis(ScriptRuntime.java:2135)
at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:95)
at org.mozilla.javascript.gen.c44._c0(<inline>:6)
at org.mozilla.javascript.gen.c44.call(<inline>)
at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:398)
at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3065)
at org.mozilla.javascript.gen.c44.call(<inline>)
at org.mozilla.javascript.gen.c44.exec(<inline>)
at org.eclipse.birt.report.engine.javascript.JavascriptEngine.evaluate(JavascriptEngine.java:290)
... 44 more

Feb 27, 2013 4:16:57 PM org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor processExtendedContent
SEVERE: There are errors evaluating script "var aggregationPeriodString = data["joinPeriodGroup/Date Ranger Data::joinPeriod"];
var aggregationPeriod = params["aggregationPeriod"];
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriodString", aggregationPeriodString);
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriod", aggregationPeriod);
//var aggregationPeriodDescription = icsc.getExternalContext().getScriptable().evaluate("getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);");
var aggregationPeriodDescription = getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);

quantity = 0;
if (data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"] != null){
quantity = data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"];
}
data["userGroupingDimension/UrmLogDataSet::userGrouping"] + " (" + aggregationPeriodDescription + "): " + quantity;":
ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
org.eclipse.birt.chart.exception.ChartException: There are errors evaluating script "var aggregationPeriodString = data["joinPeriodGroup/Date Ranger Data::joinPeriod"];
var aggregationPeriod = params["aggregationPeriod"];
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriodString", aggregationPeriodString);
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriod", aggregationPeriod);
//var aggregationPeriodDescription = icsc.getExternalContext().getScriptable().evaluate("getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);");
var aggregationPeriodDescription = getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);

quantity = 0;
if (data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"] != null){
quantity = data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"];
}
data["userGroupingDimension/UrmLogDataSet::userGrouping"] + " (" + aggregationPeriodDescription + "): " + quantity;":
ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.evaluateRowSet(DataProcessor.java:1459)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.mapToChartResultSet(DataProcessor.java:368)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.generateRuntimeSeries(DataProcessor.java:507)
at org.eclipse.birt.chart.factory.Generator.bindData(Generator.java:721)
at org.eclipse.birt.chart.reportitem.ChartReportItemPresentationBase.bindData(ChartReportItemPresentationBase.java:729)
at org.eclipse.birt.chart.reportitem.ChartReportItemPresentationBase.onRowSets(ChartReportItemPresentationBase.java:855)
at org.eclipse.birt.chart.reportitem.ChartReportItemPresentationProxy.onRowSets(ChartReportItemPresentationProxy.java:108)
at org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor.processExtendedContent(LocalizedContentVisitor.java:1022)
at org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor.localizeForeign(LocalizedContentVisitor.java:578)
at org.eclipse.birt.report.engine.presentation.LocalizedContentVisitor.localize(LocalizedContentVisitor.java:163)
at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportItemExecutor.execute(LocalizedReportItemExecutor.java:37)
at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:65)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:92)
at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:100)
at org.eclipse.birt.report.engine.api.impl.RenderTask$PageRangeRender.render(RenderTask.java:621)
at org.eclipse.birt.report.engine.api.impl.RenderTask.render(RenderTask.java:294)
at de.asweb.reportViewer.ReportHandler.getPdfReport(ReportHandler.java:356)
at de.asweb.reportViewer.ReportHandler.getReport(ReportHandler.java:185)
at de.asweb.reportViewer.ReportControllerServlet.handleRequest(ReportControllerServlet.java:49)
at de.asweb.reportViewer.ReportControllerServlet.doGet(ReportControllerServlet.java:29)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.eclipse.birt.core.exception.CoreException: There are errors evaluating script "var aggregationPeriodString = data["joinPeriodGroup/Date Ranger Data::joinPeriod"];
var aggregationPeriod = params["aggregationPeriod"];
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriodString", aggregationPeriodString);
//icsc.getExternalContext().getScriptable().setGlobalVariable("aggregationPeriod", aggregationPeriod);
//var aggregationPeriodDescription = icsc.getExternalContext().getScriptable().evaluate("getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);");
var aggregationPeriodDescription = getAggregationPeriodDescription(aggregationPeriodString, aggregationPeriod);

quantity = 0;
if (data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"] != null){
quantity = data["LogUserCountSummaryField/UrmLogDataSet::LOGUSER"];
}
data["userGroupingDimension/UrmLogDataSet::userGrouping"] + " (" + aggregationPeriodDescription + "): " + quantity;":
ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
at org.eclipse.birt.report.engine.javascript.JavascriptEngine.evaluate(JavascriptEngine.java:295)
at org.eclipse.birt.core.script.ScriptContext.evaluate(ScriptContext.java:154)
at org.eclipse.birt.report.engine.executor.ExecutionContext.evaluate(ExecutionContext.java:781)
at org.eclipse.birt.report.engine.executor.ExecutionContext.evaluate(ExecutionContext.java:761)
at org.eclipse.birt.report.engine.executor.ExecutionContext.evaluateInlineScript(ExecutionContext.java:749)
at org.eclipse.birt.report.engine.data.dte.CubeResultSet.evaluate(CubeResultSet.java:197)
at org.eclipse.birt.chart.reportitem.BIRTCubeResultSetEvaluator.evaluate(BIRTCubeResultSetEvaluator.java:128)
at org.eclipse.birt.chart.internal.datafeed.DataProcessor.evaluateRowSet(DataProcessor.java:1439)
... 37 more
Caused by: org.mozilla.javascript.EcmaError: ReferenceError: "getAggregationPeriodDescription" is not defined. (<inline>#6)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3654)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3632)
at org.mozilla.javascript.ScriptRuntime.notFoundError(ScriptRuntime.java:3717)
at org.mozilla.javascript.ScriptRuntime.nameOrFunction(ScriptRuntime.java:1758)
at org.mozilla.javascript.ScriptRuntime.getNameFunctionAndThis(ScriptRuntime.java:2135)
at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:95)
at org.mozilla.javascript.gen.c44._c0(<inline>:6)
at org.mozilla.javascript.gen.c44.call(<inline>)
at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:398)
at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3065)
at org.mozilla.javascript.gen.c44.call(<inline>)
at org.mozilla.javascript.gen.c44.exec(<inline>)
at org.eclipse.birt.report.engine.javascript.JavascriptEngine.evaluate(JavascriptEngine.java:290)
... 44 more</pre>
here are some excerpts of the java code: 
<pre class='_prettyXprint _lang-auto _linenums:0'>
BIRT ENGINE:

package de.asweb.reportViewer.birt;

import javax.servlet.ServletContext;

import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.core.framework.IPlatformContext;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportEngineFactory;

public class BirtEngine {

private static IReportEngine birtEngine = null;

private BirtEngine() {

}

public static synchronized IReportEngine getBirtEngine(ServletContext sc) {
if (birtEngine == null) {

EngineConfig config = new EngineConfig( );
System.out.println("Servlet context: " + sc.getRealPath("/"));
config.setResourcePath(sc.getRealPath("/WEB-INF/reports") + "\\library_elements");
config.setBIRTHome(sc.getRealPath("/WEB-INF/reports") + "\\library_elements");
System.out.println("BIRT Engine resource path set to: " + config.getResourcePath());

try {
//Platform.startup();
// TODO checken, stattdessen:
Platform.startup(config);
} catch (BirtException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
IReportEngineFactory factory = (IReportEngineFactory)Platform.createFactoryObject
(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
birtEngine = factory.createReportEngine(config);
}
return birtEngine;

}
}

EXCERPTS FROM MY REPORTHANDLER CLASS:

public String getReport(){
(.....)
reportRelativePath = "/WEB-INF/reports";
reportRealPath = sc.getRealPath(reportRelativePath);

IRenderTask renderTask = null;

try {
IReportRunnable design = birtReportEngine.openReportDesign(reportRealPath + "/" + reportName + ".rptdesign");

//

Run Task
IRunTask runTask = birtReportEngine.createRunTask(design);

runTask.getAppContext().put("mitarbeiterMap", mitarbeiterMap);
runTask.getAppContext().put("allMitarbeiterList", allMitarbeiterList);

runTask.getAppContext().put("reportName", reportName);

setRunTaskParams(runTask);
runTask.run(reportRealPath + "/gen_docs/" + reportName + ".rptdocument");
runTask.close();
System.out.println("+++++ RunTask successfully finished, rptdocument: " + reportRealPath + "/gen_docs/" + reportName + ".rptdocument");

//

Render Task
IReportDocument rptdoc = birtReportEngine.openReportDocument(reportRealPath + "/gen_docs/" + reportName + ".rptdocument");

renderTask = birtReportEngine.createRenderTask(rptdoc);
setRenderTaskParams(renderTask);
} catch (EngineException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

String outputType = null;
if (request.getParameter("submitHTML") != null){
outputType = "html";
request.setAttribute("outputType", "html");
} else if (request.getParameter("submitPDF") != null){
outputType = "pdf";
request.setAttribute("outputType", "pdf");
} else {
outputType = "html";
request.setAttribute("outputType", "html");
}

switch (outputType){
case "html":
return getHtmlReport(renderTask);
case "pdf":
return getPdfReport(renderTask);
default:
return getHtmlReport(renderTask);
}
}

private String getHtmlReport(IRenderTask renderTask){
String outputFilename = reportRealPath + "/gen_docs/" + reportName + ".html";
try{

// HTML HTML HTML
HTMLRenderOption renderOption = new HTMLRenderOption();
renderOption.setOutputFormat(HTMLRenderOption.OUTPUT_FORMAT_HTML);
renderOption.setEmbeddable(true);

renderOption.setBaseURL(reportRealPath + "/libaray_elements");
renderOption.setImageHandler(new HTMLServerImageHandler());
renderOption.setBaseImageURL(request.getContextPath()+"/images");
renderOption.setImageDirectory(sc.getRealPath("/") + "/images");

renderOption.setOutputFileName(outputFilename);

renderTask.setRenderOption(renderOption);

renderTask.render();
renderTask.close();
// HTML HTML HTML

// html to string
File file = new File(outputFilename);
StringBuilder fileContents = new StringBuilder((int)file.length());
Scanner scanner = null;
try {
scanner = new Scanner(file);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String lineSeparator = System.getProperty("line.separator");

try {
while(scanner.hasNextLine()) {
fileContents.append(scanner.nextLine() + lineSeparator);
}
return fileContents.toString();
} finally {
scanner.close();
}

} catch (EngineException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return "Report konnte nicht erzeugt werden. Bitte nicht hauen!";

}
</pre>
 
Attachements: BirtEngine class where I instantiate the BIRT Engine 
ReportHandler class which does all the report generation stuff

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Comments

CBR

Hi Jakoby,

are you using the osgi runtime?

It would be more interesting how you call the function? I m assuming you call them within chart script.
Most problems caused by the two phases model are just problems with global variables initialized in Run and therefore not visible in Render. In the single phases model you can access variables initialized in Run also in Render.

CBR

Another side note: 
Why do you store the report output to a file instead of using a output stream? 
You can set the output stream using the render context object. 
 
Eg: 
<pre class='_prettyXprint _lang-auto _linenums:0'>
HTMLRenderOption renderOption = new HTMLRenderOption();
...
ByteArrayOutputStream output = new ByteArrayOutputStream();
renderOption.setOutputStream(output);

...
task.run();
task.close();
return new String(output.toByteArray(), "UTF-8");
</pre>

jakoby84

Thanks for your reply! 
 
How do I check if I'm using the OSGI runtime? 
 
<blockquote class='ipsBlockquote' data-author="'cbrell'" data-cid="114596" data-time="1361978249" data-date="27 February 2013 - 08:17 AM">
Another side note: 
Why do you store the report output to a file instead of using a output stream? 
You can set the output stream using the render context object. </blockquote>
 
Yes thats a valid point, I will actually refactor it to stream the output. Just was a workaround for development. 
 
I decided to go with the separate run and render task because the same report can be rendered as HTML and/or PDF. I know it is also possible with RunAndRender task but anyways. I think I had even another reason to do it like that but can't remember anymore. I will try it with the runandrender task, but nevertheless it would be interesting to know why it does not work in the approach I'm using. 
 
I do not use global variables. But I rely on report parameters. The javascript function is in a file which is referenced in a library. This library defines all datasources, datasets and also the chart. I then have a rptdesign file which embeds the chart from the library. 
Like in the picture I created and attached 
The function getAggregationPeriodDescription() is called from the chart's y series interactivity tooltip expression. I define this expression on the chart in the library.

CBR

Are you calling the function directly? Just tried to create a sample myself and i was not able to call a function defined in an external js file from within a chart (no matter where i put the expression to call the function). I know about that problem and solved it using a global variable that stores a reference to the external function. Using that global variable the function can be called within the chart.
How did you solve that problem? Can you create a simple sample? If you work around issue above in the same way your variable needs to be persistent and global to work with both models.

CBR

Oh there you go...

Just read your first post again and the log is saying that you worked around the issue using the same approach.
Try to make the variable global and persistent by using reportContext.setGlobalPersistentVariable instead of setGlobalVariable

So it is crystal clear why it is not working in the two phases model:
GlobalVariable can only be accessed within the same phase if you are using the two phases model.

jakoby84

<blockquote class='ipsBlockquote' data-author="'cbrell'" data-cid="114607" data-time="1361981240" data-date="27 February 2013 - 09:07 AM">
Oh there you go... 
 
Just read your first post again and the log is saying that you worked around the issue using the same approach. 
Try to make the variable global and persistent by using reportContext.setGlobalPersistentVariable instead of setGlobalVariable 
 
So it is crystal clear why it is not working in the two phases model: 
GlobalVariable can only be accessed within the same phase if you are using the two phases model. </blockquote>
 
Well yes and no. I googled around and found the setGlobalVariable() approach. Nevertheless, in the sample code above you can see that the setGlobalVariable() section is commented out. And still it runs for the runTask. I tried the approach without success (for the render task). But as you say, maybe its due to that its not setPersistentGlobalVariable(). I'll definitely check that out. 
 
Nevertheless, in the runTask and also for the whole process in the eclipse preview, everything works without setPersistant(Global)Variable(). Maybe its due to that I'm using the newest version of BIRT and you may be on an older version? Don't know... 
 
Well, anyways, I'll check out setPersistentGlobalVariable() and on the other hand will evaluate if I change everything to a RunAndRenderTask. 
 
Results will be posted as soon as I checked it!

CBR

I used the very latest version of BIRT (4.2.1).
I can run it in the designer preview when not using global variables to reference the function without any errors but it is not working (calling the function without referencing it using a global variable).

jakoby84

I am still not using global variables for the function names. But just to give a feedback... I refactored my Java code to use RunAndRenderTask instead of separate RunTask and RenderTask. This immediately solved the problem. The js functions are now found from everywhere.

I don't really understand why it is not working in your case; unfortunately, as my project is quite big and the data can't really be extracted, I'm not able to provide a sample report to illustrate the problem.

Thanks for your feedback; the hint that some objects may not be available in RenderTask anymore helped me to get around the problem