public override IEnumerable <KeyValuePair <AttributeValue, long> > Enumerate(QueryCriteria value)
{
IResultSet <KeyValuePair <AttributeValue, long> > resultSet =
new ListedResultSet <KeyValuePair <AttributeValue, long> >();
Evaluate(ref resultSet, value);
return(resultSet);
}
public virtual void Evaluate(ref IResultSet <T> resultSet, QueryCriteria values)
{
if (resultSet == null)
{
resultSet = new ListedResultSet <T>();
}
foreach (T result in Enumerate(values))
{
resultSet.Add(result);
}
}
public override void Evaluate(ref IResultSet <KeyValuePair <AttributeValue, long> > resultSet, QueryCriteria values)
{
if (resultSet == null)
{
resultSet = new ListedResultSet <KeyValuePair <AttributeValue, long> >();
}
IDictionary <long, AttributeValue> initial = new HashVector <long, AttributeValue>();
var firstIteration = true;
var intersecter = new Intersecter <long, AttributeValue>(initial);
if (_childPredicates != null)
{
foreach (var predicate in _childPredicates)
{
var terminal = (TerminalPredicate)predicate;
if (terminal == null)
{
continue;
}
foreach (var kvp in terminal.Enumerate(values))
{
if (firstIteration)
{
initial[kvp.Value] = kvp.Key;
}
else
{
intersecter.Add(kvp.Value, kvp.Key);
}
}
if (!firstIteration)
{
intersecter.Flip();
}
firstIteration = false;
}
}
foreach (var keyValuePair in intersecter.FinalResult)
{
resultSet.Add(new KeyValuePair <AttributeValue, long>(keyValuePair.Value, keyValuePair.Key));
}
}
public override void Evaluate(ref IResultSet <KeyValuePair <AttributeValue, long> > resultSet, QueryCriteria values)
{
resultSet = new ListedResultSet <KeyValuePair <AttributeValue, long> >();
}
