public override bool Next()
{
while (_ids.hasNext())
{
if (_client.acceptNode(_ids.next(), (Value[])null))
{
return(true);
}
}
return(false);
}
public override bool AcceptNode(long reference, Value[] values)
{
// First filter on these values, which come from the index. Some values will be NO_VALUE, because some indexed values cannot be read back.
// Those values will have to be read from the store using the propertyCursor and is done in one pass after this loop, if needed.
int storeLookups = 0;
if (values == null)
{
// values == null effectively means that all values are NO_VALUE so we certainly need the store lookup here
foreach (IndexQuery filter in _filters)
{
if (filter != null)
{
storeLookups++;
}
}
}
else
{
for (int i = 0; i < _filters.Length; i++)
{
IndexQuery filter = _filters[i];
if (filter != null)
{
if (values[i] == NO_VALUE)
{
storeLookups++;
}
else if (!filter.AcceptsValue(values[i]))
{
return(false);
}
}
}
}
// If there were one or more NO_VALUE values above then open store cursor and read those values from the store,
// applying the same filtering as above, but with a loop designed to do only a single pass over the store values,
// because it's the most expensive part.
if (storeLookups > 0 && !AcceptByStoreFiltering(reference, storeLookups, values))
{
return(false);
}
return(_target.acceptNode(reference, values));
}