Datasource API returns 0 for errors

[cammoore]

Reported by rbrewer, Apr 24, 2011
In the current implementation, if a Source does not have data (particularly calculated data) for one or more timestamps, it returns 0 for that timestamp. This can be misleading, as missing data is different from zero data. The datasource API could be made to throw a datasource exception when there is missing data, rather than returning 0 data.