private static bool TryMatchFieldWithCondition(string fieldName, QueryFilter resultFilter, SearchConditions conditions)
{
List<SearchCondition> conditionList;
if (!conditions.TryGetValue(fieldName, out conditionList))
{
return false;
}
switch (conditionList.Count)
{
case 2: // checking for the between operator
{
var lessThanOrEqualCondition = conditionList.SingleOrDefault(c => c.Operator == ScanOperator.LessThanOrEqual);
var greaterThanOrEqualCondition = conditionList.SingleOrDefault(c => c.Operator == ScanOperator.GreaterThanOrEqual);
if ((lessThanOrEqualCondition == null) || (greaterThanOrEqualCondition == null))
{
throw new InvalidOperationException("Multiple conditions for the same field are only supported for the BETWEEN case");
}
if
(
(lessThanOrEqualCondition.Values.Length != 1)
||
(greaterThanOrEqualCondition.Values.Length != 1)
)
{
return false;
}
resultFilter.AddCondition(fieldName, QueryOperator.Between, greaterThanOrEqualCondition.Values[0], lessThanOrEqualCondition.Values[0]);
}
break;
case 1:
{
SearchCondition condition = conditionList[0];
// here we need to convert operators, as AWS SDK's default conversion is buggy
QueryOperator queryOperator;
if
(
(!TryConvertScanOperatorToQueryOperator(condition.Operator, out queryOperator))
||
(condition.Values.Length != 1)
)
{
return false;
}
resultFilter.AddCondition(fieldName, queryOperator, condition.Values[0]);
}
break;
default:
throw new InvalidOperationException(string.Format("Too many conditions for field {0}", fieldName));
}
// removing the matched condition
conditions.Remove(fieldName);
return true;
}
private static bool TryMatchFieldWithCondition(string fieldName, QueryFilter resultFilter, SearchConditions conditions)
{
List <SearchCondition> conditionList;
if (!conditions.TryGetValue(fieldName, out conditionList))
{
return(false);
}
switch (conditionList.Count)
{
case 2: // checking for the between operator
{
var lessThanOrEqualCondition = conditionList.SingleOrDefault(c => c.Operator == ScanOperator.LessThanOrEqual);
var greaterThanOrEqualCondition = conditionList.SingleOrDefault(c => c.Operator == ScanOperator.GreaterThanOrEqual);
if ((lessThanOrEqualCondition == null) || (greaterThanOrEqualCondition == null))
{
throw new InvalidOperationException("Multiple conditions for the same field are only supported for the BETWEEN case");
}
if
(
(lessThanOrEqualCondition.Values.Length != 1)
||
(greaterThanOrEqualCondition.Values.Length != 1)
)
{
return(false);
}
resultFilter.AddCondition(fieldName, QueryOperator.Between, greaterThanOrEqualCondition.Values[0], lessThanOrEqualCondition.Values[0]);
}
break;
case 1:
{
SearchCondition condition = conditionList[0];
// here we need to convert operators, as AWS SDK's default conversion is buggy
QueryOperator queryOperator;
if
(
(!TryConvertScanOperatorToQueryOperator(condition.Operator, out queryOperator))
||
(condition.Values.Length != 1)
)
{
return(false);
}
resultFilter.AddCondition(fieldName, queryOperator, condition.Values[0]);
}
break;
default:
throw new InvalidOperationException(string.Format("Too many conditions for field {0}", fieldName));
}
// removing the matched condition
conditions.Remove(fieldName);
return(true);
}