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corchi72

Member

Registered: 2010-12-10

Posts: 232

I can run a server function from a client station?

I can run a server function from a client station if I used TSQLRestServerDB TSQLite3HttpClient server side and client-side

I need to send me an xml file from the server (I read files from a directory server)

thanks corchi

ab

Administrator

From: France

Registered: 2010-06-21

Posts: 14,659

Website

Re: I can run a server function from a client station?

Create a Service, as defined in the documentation.

corchi72

Member

Registered: 2010-12-10

Posts: 232

Re: I can run a server function from a client station?

I only found this documentation,
http://synopse.info/forum/viewtopic.php?id=256

where I can entice the right one?

thanks corchi

ab

Administrator

From: France

Registered: 2010-06-21

Posts: 14,659

Website

Re: I can run a server function from a client station?

In the official documentation, to be downloaded from http://synopse.info/files/synproject/sampledoc.zip
See http://synopse.info/forum/viewtopic.php?id=55

In the SAD document, there is a whole chapter about Service programming.
See also http://synopse.info/forum/viewtopic.php?pid=233 (less complete)

corchi72

Member

Registered: 2010-12-10

Posts: 232

Re: I can run a server function from a client station?

ok thanks,
I have read and produced the following example that sends a filename to the server which returns the string read xml file in the directory server:

unit FileTables
....
function TServiceServer.DataAsXML(aRecord: TSQLRecord;
  aParameters: PUTF8Char; const aSentData: RawUTF8; out aResp, aHead: RawUTF8): Integer;
var //aData: TSQLRawBlob;
   sfilename:RawUTF8;
   XmlDoc: TNativeXml;
   aData: RawUTF8 ;

begin
  writeln('Start DataAsXML');
  if not UrlDecodeNeedParameters(aParameters,'FILENAME') then begin
    result := 404; // invalid Request
    writeln('invalid Request');
    exit;
  end;
  while aParameters<>nil do begin
    UrlDecodeValue (aParameters,'FILENAME=',sfilename,@aParameters);
  end;
  writeln(format('filename: %s',[sfilename]));

  if FileExists(sfilename) then
  begin
      writeln(format('Exist file: %s',[sfilename]));
     try
        XmlDoc := TNativeXml.Create(nil);
        XmlDoc.LoadFromFile(sfilename);
        if (XmlDoc <> nil) Then
        begin
           aData := XmlDoc.WriteToLocalString;
        end;
     finally
        XmlDoc.Free;
     end;
  end
  else
   begin
    result := 404; // invalid Request
    exit; // we need a valid record and its ID
   end;

  aResp := JSONEncodeResult([aData]);
  //aResp := JSONEncodeResult([SynCommons.BinToHex(aData)]);
  // idem: aResp := JSONEncode(['result',BinToHex(aRecord.fData)],TempMemoryStream);
  result := 200; // success
end;
..............................end FileTables

........ Client procedure
Var

  sfilename:String;
  XmlDoc: TNativeXml;
  aData: RawUTF8;
begin 
..
aData := ADatabaseServer.CallBackGetResult('DataAsXML',['filename',StringtoUTF8(sfilename)]);
                 if Length(aData)>0 then
                 begin
                   sfilename := nome;
                   sfilename := format('%s%s.xml',[GetTempDir, ReplaceStr(sfilename,'\','_')]) ;

                   XmlDoc.ReadFromString(UTF8ToString(aData));
                   XmlDoc.SaveToFile(sfilename);
                 end;
...
end;

but now I want to send the xml string to the server and the server would that save the document with a specific name

I wrote the following example using "CallBackPut" but I can not send the parameters type "filename" to "XMLAsData",
and I can not read the parameters returned by procedure "aResp: JSONEncodeResult = ([sFileName]);"

unit FileTables
....
function TServiceServer.XMLAsData(aRecord: TSQLRecord;
  aParameters: PUTF8Char; const aSentData: RawUTF8; out aResp, aHead: RawUTF8): Integer;
var //aData: TSQLRawBlob;
   sfilename:RawUTF8;
   XmlDoc: TNativeXml;
   aData: RawUTF8 ;
   Node: TXmlNode;
begin
  writeln('Start XMLAsData');
//  if not UrlDecodeNeedParameters(aParameters,'FILENAME') then begin
//    result := 404; // invalid Request
//    writeln('invalid Request');
//    exit;
//  end;
//  while aParameters<>nil do begin
//    UrlDecodeValue (aParameters,'FILENAME=',sfilename,@aParameters);
//  end;
//  writeln(format('filename: %s',[sfilename]));

  if length(aSentData)>0 then
  begin
//      writeln(format('Exist data: %s',[aSentData]));
     try
        XmlDoc := TNativeXml.Create(nil);
        XmlDoc.ReadFromString(UTF8ToString(aSentData));
         sfilename := format('%s%s.xml',[GetTempDir, ReplaceStr(sfilename,'\','_')]) ;
        XmlDoc.SaveToFile(sfilename);
     finally
        XmlDoc.Free;
     end;
  end
  else
   begin
    result := 404; // invalid Request
    exit; // we need a valid record and its ID
   end;

  aResp := JSONEncodeResult([sfilename]);
  writeln(format('Exist data: %s',[aResp]));
  // idem: aResp := JSONEncode(['result',BinToHex(aRecord.fData)],TempMemoryStream);
  result := 200; // success
end;

..............................end FileTables


........ Client procedure
Var

  sfilename:String;
  XmlDoc: TNativeXml;
  aData: RawUTF8;
  aResponse: RawUTF8;
begin 
...
aData :=  " Here insert the xml string !!!!!!!!"
ADatabaseServer.CallBackPut('XMLAsData',aData,aResponse);
sfilename := UTF8ToString(aResponse); "the value returned is always empty !!!!!!!!"


..
end;

can you help me ?

thanks corchi