internal CommandParameterInfo LookupParameter(string name)
{
// check for complete name first
if (ParameterInfoLookupTable.ContainsKey(name))
{
return(ParameterInfoLookupTable[name]);
}
// if we didn't find it by name or alias, try to find it by prefix
var candidates = (from key in ParameterInfoLookupTable.Keys
where key.StartsWith(name, StringComparison.OrdinalIgnoreCase)
select key).ToList();
if (candidates.Count < 1)
{
var msg = String.Format("No parameter was found that matches the name or alias '{0}'.", name);
throw new ParameterBindingException(msg, "ParameterNotFound");
}
if (candidates.Count > 1)
{
var msg = String.Format("Supplied parmameter '{0}' is ambiguous, possibilities are: {1}",
name, String.Join(", ", candidates));
throw new ParameterBindingException(msg, "AmbiguousParameter");
}
return(ParameterInfoLookupTable[candidates[0]]);
}
private void RegisterParameter(CommandParameterInfo parameterInfo)
{
// also add it to lookuptable and check for unuque names/aliases
var allNames = parameterInfo.Aliases.ToList();
allNames.Add(parameterInfo.Name);
foreach (var curName in allNames)
{
if (ParameterInfoLookupTable.ContainsKey(curName))
{
// save exception to be thrown when this object is validated, not now
var msg = String.Format("The name or alias '{0}' is used multiple times.", curName);
_validationException = new MetadataException(msg);
continue;
}
ParameterInfoLookupTable[curName] = parameterInfo;
}
}
