问题
I'm about to begin implementing a new version of an Email marketing program for my company. The old version of the program program heavily depended on micros and has about 2000 lines to prepare data for an email campaign to be run. But I have read somewhere that macros are not the best solution to run such heavy tasks and it's better we keep them for simple things.
I'm quite new to QV and I'm the kind of person that likes to learn as I go and not complete a big reference book before I start a project. I'm good at C# and Java but I realized QlikView scripts are in either VBScript or JScript. I have no experience with them whatsoever but they don't look very complicated to me at first glance.
What I was wondering was whether there is a better way of handling data in QlikView? That means can I use another programming language or do you suggest I stick to the script languages provided by QV? Because one big problem I've seen is that as macros get larger they become very hard to debug.
In the old version of our program developed by one of my colleagues who has now left the company, as soon as there was an error in preparing the data, all we got was the macros window with no clue about where the error had taken place. As I would like to implement this project incrementally and little by little, I would like to have a good mechanism for trouble shooting rather than goring though a 2000-line script to understand where the problem comes from.
Your suggestions about how to bring this project to a safe shore are very welcome. So, any good plugins or 3rd party app to monitor the data and facilitate my implementation can help.
回答1:
We are an outlier there. We are using the OCX and connect to it in winforms.
We have then standard c# code with everything debuggable and it makes everyone here very happy indead after using endless amount of time debugging javascripts.
The users use QV for selecting stuff and then we use the selected event in the OCX and pull the selected data from QV for postprocessing and tag the QV data with dynamic sql update.
I do not nessesarily recommend this method, but it has increased dramatically the development output for us when using QV for datamining and then processing the data selected.
Next project we are not going to use the OCX. But all the buisness logic and postprocessing is in a com visible c# dll' that we access through vbscript macro.
EDIT. More details
This is the current setup communicating with the document through OCX
Change a selection
axQlikMainApp.ActiveDocument.Fields("%UnitID").Clear();
var selSuccess = axQlikMainApp.ActiveDocument.Fields(cls.QlikView.QvEvalStr.Fields.UnitId).Select("(%UnitID)");
reset a sheet object
axQlikMainApp.ActiveDocument.ClearCache();
axQlikMainApp.ActiveDocument.GetSheetObject("Document\\MySheetObjectName").Restore();
get a string from QV
string res axQlikMainApp.ActiveDocument.Evaluate("=concat(Distinct myField1 &'|' & MyField2,'*')");
and can get horribly complicated
string res axQlikMainApp.ActiveDocument.Evaluate( "=MaxString({1 <%UnitID= {" + sUnitIds + @"}>}'<b>' & UnitName & '</b> \r\n bla bla bla:' & UnitNotesPlanning) & " +
"'\n title1: ' & Count({1 <%UnitID= {" + sUnitIds +@"},%ISODate={'" + qlickViewIsoDate + "'},Need = {'Ja'}" + MinusCalc + ">}Distinct %CivicRegNo) & " +
"'\n Title2: ' & Count({1 <%UnitID= {" + sUnitIds + @"},%ISODate={'" + qlickViewIsoDate + "'} " + recallMinusCalc + ">}DISTINCT RevGUID) & " +
"'\n Title3: ' & Count({1 <%UnitID= {" + sUnitIds + @"},%ISODate={'" + qlickViewIsoDate + "'},Need2 = {'Ja'}>}Distinct %CivicRegNo) & '" +
"\n Title4:' & MinString({1 <%UnitID= {" + sUnitIds + @"},FutureBooking = {1}>} Date(BookingStart) & ' Beh: ' & If(IsNull(ResourceDisplayedName),'_',ResourceDisplayedName)) &'" +
"\n Title5:' & MaxString({1 <%UnitID= {" + sUnitIds + @"},FutureBooking = {0}>} Date(BookingStart) & ' Beh: ' & If(IsNull(ResourceDisplayedName),'_',ResourceDisplayedName)) &''" +
" & MaxString({1 <%UnitID= {" + sUnitIds + @"}>}if(UnitGeo_isRelocatedOnSameGeo=1,'\nOBS! Multiple geo addresses. Zoom!',''))" +
""
);
来源：https://stackoverflow.com/questions/20991384/alternatives-to-macros-for-accessing-data-objects