public static T CaseWhen <T>(QueryCondition[] conditions, T[] thens, T @else)
where T : IResult
{
if (conditions.Length != thens.Length)
{
throw new ArgumentException("The number of condition and then statement should match.");
}
ResultHelper <T> info = ResultHelper.Of <T>();
Type? underlyingType = info.UnderlyingType;
object[] arguments = new object[(conditions.Length << 1) + 1];
int argNum = 0;
for (int index = 0; index < conditions.Length; index++)
{
arguments[argNum] = conditions[index];
argNum++;
arguments[argNum] = WrapIfNull(thens[index]);
argNum++;
}
arguments[argNum] = WrapIfNull(@else);
return(info.NewFunctionResult(t => t.FnCaseWhenMultiple(conditions.Length), arguments, underlyingType));
}
public static T CaseWhen <T>(QueryCondition condition, Parameter @then, Parameter @else)
where T : IPlainPrimitiveResult
{
ResultHelper <T> info = ResultHelper.Of <T>();
Type underlyingType = info.UnderlyingType !;
return(info.NewFunctionResult(t => t.FnCaseWhen, new object[] { condition, WrapIfNull(@then), WrapIfNull(@else) }, underlyingType));
}