[Pvmanager-devel] Data conversion from scalar to array

[Carcassi, G. <car...@bn...>]

Hi all,

 

Since Epics3 does not distinguish between scalars and array, PVManager
does and PVAcces does/will, I am wondering whether we should support (or
not) automatic conversion between them. That is: if I ask for a VDouble,
but the native type is an array VDoubleArray, should I automatically
return a VDouble with the first element or return a type mismatch error?
If I ask for a VDoubleArray, but the native type is a VDouble, should I
return a VDoubleArray with an array of size 1 or return a type mismatch
error?

 

My hunch is to not make these conversions by default, but to provide (if
needed), an operation that does such conversion... this way the user can
do it but it's an explicit operation.

 

Agree? Disagree?

 

Gabriele