1.4 How LANSA Open Works
Your PC based application can be developed using C#, VB.NET, Visual Basic, Paradox, Delphi, Gupta, PowerBuilder, Excel, REXX, C or in fact any PC development tool that can reference a third party DLL.
- The application program makes calls to the LANSA Open functions which reside locally on the PC. This call may be to a function to format data, send information to the server or receive information from the server.
For example, if the application calls the LANSA Open function LceFetch (to get a record from the host), LANSA Open sends a request for data to the server.
- On the server, a LANSA Open program receives the request and determines what action to take.
If a file needs to be accessed, the appropriate LANSA OAM (or I/O Module) is called and the data is retrieved and formatted.
- Once the data is retrieved, it is transmitted back to the PC.
- The PC application can then use other LANSA Open functions to access that data which is stored on the PC.