Generating the Source XML
The following example describes how to generate easily XML data within Fabasoft app.ducx Expressions. Alternatively, Java standard functionality can be used to generate XML data in a convenient way.
First create some demo data. A logbook management is needed that contains some logbooks containing some trips. Edit the trips’ properties and insert dates and miles.
The master plan is to put the data in a dictionary and generate the XML structure with the FSCEXPEXT@1.1001:Value2XML() action. Replace the use case file as used in chapter “Getting Started” with the following use case file.
Example |
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app.ducx Use Case Language usecases BIRT@1.506
{
import COOSYSTEM@1.1;
import FSCVAPP@1.1001;
import FSCVENV@1.1001;
import FSCVIEW@1.1001;
import FSCEXPEXT@1.1001;
import COOMAPI@1.1;
import FSCACROBAT@1.1; // gets exectued when calling the context menu command
menu usecase CreateBirtReport on selected {
variant Object {
impl = expression {
// GenerateData() collects the meta data of a logbook management
// the implementation can be found below
dictionary data = cooobj.GenerateData();
// creates XML from the data dictionary
string xmlstr = cooobj.Value2XML(data);
content xmlcont = coort.CreateContent();
xmlcont.SetContent(cootx, 1, 65001, xmlstr); // a BIRT PDF report is generated based on the XML data and
// the #BirtReport defined in the object model language
content result = coouser.FSCBIRT@1.1001:CreateReport
(xmlcont, #BirtReport)[3]; // contains the PDF report
FSCACROBAT@1.1:PDFObject pdf =
#FSCACROBAT@1.1:PDFObject.ObjectCreate()[2]; pdf.content = result;
pdf.content.contextension = "pdf";
pdf.objname = "Report " + coort.GetCurrentDateTime(cooobj);
// put the report on the desk of the user
cooroot.ObjectLock(true, true);
cooroot.objchildren += pdf;
}
}
} // collects the meta data of a logbook management and returns a dictionary
usecase GenerateData(retval dictionary result) {
// use case implementation for the LogbookManagement
variant LogbookManagement {
impl = expression {
result = {
// the generated XML will contain a tag "objname" with the
// computed value of cooobj.objname
objname: cooobj.objname
};
dictionary[] logbooks;
dictionary[] logbookids;
// for all logbooks in the logbook management
for (Logbook logbook: cooobj.vmlogbooks) {
logbooks += logbook.GenerateData();
// IDs are necessary to be able to filter the rows with XPath
// expressions in the report design (more information can be found
// in chapter “Creating a Report With Eclipse BIRT Report Designer”
logbookids += { id: logbook.objaddress };
}
result.SetEntry("logbook", logbooks);
result.SetEntry("@logbook", logbookids);
}
} // use case implementation for the LogbookManagement
variant Logbook {
impl = expression {
result = {
objname: cooobj.objname,
logdescription: cooobj.logdescription
};
dictionary[] logtriplogs;
for (TripLog triplog: cooobj.logtriplogs) {
logtriplogs += triplog.GenerateData();
}
result.SetEntry("logtriplog", logtriplogs);
}
} // use case implementation for the TripLog
variant TripLog {
impl = expression {
result = {
objname: cooobj.objname,
trlfrom: cooobj.trlfrom,
trluntil: cooobj.trluntil,
trlmiles: cooobj.trlmiles
};
}
}
}
} |
As result the report is generated based on the data provided in the Folio objects. The last step is to improve the demo report with the Eclipse BIRT Report Designer.
