JRC change data source of xml based report

Question

Hello
I have a crystal report with an xml data source. I stored the report without data.
When I open the report using JRC and try to set a new data source an exception is thrown.
- JRCAgent1 received request: setDataSourceRequest
- An error occurs, the error is: Schema file does not define any table
- XmlDriverException happened in the function CRDB_XMLImpl.DbLogonServer() when logoning from Local
- Set data source failed: Fehler bei Anmeldung.
- JRCAgent1 detected an exception: Fehler bei Anmeldung.
     at com.crystaldecisions.sdk.occa.report.lib.ReportSDKException.throwReportSDKException(Unknown Source)
     at com.businessobjects.reports.sdk.b.e.a(Unknown Source)
     at com.businessobjects.reports.sdk.b.e.a(Unknown Source)
     at com.businessobjects.reports.sdk.JRCCommunicationAdapter.request(Unknown Source)
     at com.crystaldecisions.proxy.remoteagent.y.a(Unknown Source)
     at com.crystaldecisions.proxy.remoteagent.r.a(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.cf.a(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.DatabaseController.a(Unknown Source)
     at com.crystaldecisions.sdk.occa.report.application.DatabaseController.setDataSource(Unknown Source)
     at com.crystaldecisions.reports.sdk.DatabaseController.setDataSource(Unknown Source)
     at JRCExportReportToPDF.main(JRCExportReportToPDF.java:40)
The code sniped is:
            //open report.
            ReportClientDocument reportClientDoc = new ReportClientDocument();
            reportClientDoc.open(REPORT_FILE_NAME, 0);
            // open xml data
            FileInputStream dataInputStream = new FileInputStream(new File(DATA_FILE_NAME));
            byte[] dataBuffer = new byte[dataInputStream.available()];
            dataInputStream.read(dataBuffer);
            ByteArray dataByteArray = new ByteArray(dataBuffer);
            // open xml schema
            FileInputStream schemaInputStream = new FileInputStream(new File(SCHEMA_FILE_NAME));
            byte[] schemaBuffer = new byte[schemaInputStream.available()];
            schemaInputStream.read(schemaBuffer);
            ByteArray schemaByteArray = new ByteArray(schemaBuffer);
            XMLDataSet xmlDataSet = new XMLDataSet(dataByteArray, schemaByteArray);
            reportClientDoc.getDatabaseController().setDataSource (xmlDataSet, "TamFileList/TamFile/Notam", "TamFileList/TamFile/Notam");
Thank you for any hint.
Rudy

Answer 1

Direct reporting in Crystal Reports works fine. All data is presented and refresh also works.
The xml and the schama files are read in the first block of the read. So the complete xml and schema are
passed to the constructor of the XMLDataSet. Of course I have to change the read for production (thank you for the hint)
I wonder why the ClientReportDocument or better to say its data source and its underlying driver
(CRDB_XMLImpl.DbLogonServer()) tryes to connect to a database when there is no database at all.
Edited by: Erwin Stadler on Jul 30, 2010 1:39 PM