WCPS query error handling

[Dirk Daems]

Error handling in Rasdaman / Petascope is cumbersome when executing WCPS queries. This ticket will provide an overview of error handling enhancements.

For example, when a user forgets to specify CRS:1 in the query below, a vague error is returned: “Runtime error while processing request: For input string: i_i[0]”.

for c in (mean_summer_airtemp)
  return condense +
  over $x x(500:600),
       $y y(500:600)
  where (max(c[x($x:$x),y($y:$y)]) < 100)
  using c[x($x),y($y)]