Best practice for SAF implementation¶
Best practice for SAF implementation
This chapter is a list of collected proved and functional approaches for SAF implementation to your application.
They are not obligatory but following these rules ensures smooth export/import of SAF file and you might avoid any un-foreseen issues.
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As everybody should follow specified header names in documentation per version, We would also recommend to:
strip all headers from blank space, dot, comma, dash etc. when importing and base your import on stripped strings
make import case non-sensitive
ignore units information in header for import purposes, SAF should be possible to import without this information in header
when exporting, include units (for better readability of end user) according to unit setting and table of units provided in Project and model specifications
Format of cells¶
All numerical values (doubles, integers) should be exported as “Number” format in Excel
This rule should apply also for cells which could contain more values, in a case it will have only on.
Example: Thickness for StructuralSurfaceMember can contain single value in case of constant thickness type. In this case cell format should be number. In case of variable thickness type, string will be used
Values in cells¶
Empty and blank cells
On export side - do not export blank cells as empty strings, use null value instead
On import side - null should be standard indicator of blank cell, but make your solution prepared also to empty strings or blank space
Numerical values (integer, double)
You should always read raw data from XML structure of XLS file
Rounding is not recommended
Numerical chain values (string)
standard separator for more values in a cell is semicolon
Culture invariant decimal separator¶
On import and export side you should always use culture invariant decimal symbol - dot and no thousands separator
Units in headers¶
Import or export should be based on header without unit specification. Missing unit should not block import, either its presence. It is recommended though to include unit information to header for better user read-ability of SAF file.