/// <summary> Tests a CacheEntry[] for indication of "insane" cache usage.
/// <p/>
/// NOTE:FieldCache CreationPlaceholder objects are ignored.
/// (:TODO: is this a bad idea? are we masking a real problem?)
/// <p/>
/// </summary>
public Insanity[] Check(params CacheEntry[] cacheEntries)
{
if (null == cacheEntries || 0 == cacheEntries.Length)
{
return(new Insanity[0]);
}
if (null != ramCalc)
{
for (int i = 0; i < cacheEntries.Length; i++)
{
cacheEntries[i].EstimateSize(ramCalc);
}
}
// the indirect mapping lets MapOfSet dedup identical valIds for us
//
// maps the (valId) identityhashCode of cache values to
// sets of CacheEntry instances
MapOfSets <int, CacheEntry> valIdToItems = new MapOfSets <int, CacheEntry>(new Dictionary <int, Dictionary <CacheEntry, CacheEntry> >(17));
// maps ReaderField keys to Sets of ValueIds
MapOfSets <ReaderField, int> readerFieldToValIds = new MapOfSets <ReaderField, int>(new Dictionary <ReaderField, Dictionary <int, int> >(17));
//
// any keys that we know result in more then one valId
// TODO: This will be a HashSet<T> when we start using .NET Framework 3.5
Dictionary <ReaderField, ReaderField> valMismatchKeys = new Dictionary <ReaderField, ReaderField>();
// iterate over all the cacheEntries to get the mappings we'll need
for (int i = 0; i < cacheEntries.Length; i++)
{
CacheEntry item = cacheEntries[i];
System.Object val = item.GetValue();
if (val is Lucene.Net.Search.CreationPlaceholder)
{
continue;
}
ReaderField rf = new ReaderField(item.GetReaderKey(), item.GetFieldName());
System.Int32 valId = val.GetHashCode();
// indirect mapping, so the MapOfSet will dedup identical valIds for us
valIdToItems.Put(valId, item);
if (1 < readerFieldToValIds.Put(rf, valId))
{
if (!valMismatchKeys.ContainsKey(rf))
{
valMismatchKeys.Add(rf, rf);
}
}
}
List <Insanity> insanity = new List <Insanity>(valMismatchKeys.Count * 3);
insanity.AddRange(CheckValueMismatch(valIdToItems, readerFieldToValIds, valMismatchKeys));
insanity.AddRange(CheckSubreaders(valIdToItems, readerFieldToValIds));
return(insanity.ToArray());
}
