private static IEnumerable <AggregateTokenBase> MergeEntitySetAggregates(IEnumerable <AggregateTokenBase> tokens)
{
List <AggregateTokenBase> mergedTokens = new List <AggregateTokenBase>();
Dictionary <string, AggregateTokenBase> entitySetTokens = new Dictionary <string, AggregateTokenBase>();
foreach (AggregateTokenBase token in tokens)
{
switch (token.Kind)
{
case QueryTokenKind.EntitySetAggregateExpression:
{
AggregateTokenBase currentValue;
EntitySetAggregateToken entitySetToken = token as EntitySetAggregateToken;
string key = entitySetToken.Path();
if (entitySetTokens.TryGetValue(key, out currentValue))
{
entitySetTokens.Remove(key);
}
entitySetTokens.Add(key, EntitySetAggregateToken.Merge(entitySetToken, currentValue as EntitySetAggregateToken));
break;
}
case QueryTokenKind.AggregateExpression:
{
mergedTokens.Add(token);
break;
}
}
}
return(mergedTokens.Concat(entitySetTokens.Values).ToList());
}
