public bool ContainsRelatedResource(ulong resourceId, ulong predicateId, ulong relatedResourceId, int graphId, BrightstarProfiler profiler)
{
using (profiler.Step("ContainsRelatedResource"))
{
byte[] valueBuff = null;
PredicateRelatedResourceIndex predicateIndex = GetPredicateIndex(predicateId, profiler);
return(predicateIndex != null &&
predicateIndex.Search(MakePredicateIndexKey(resourceId, graphId, relatedResourceId), valueBuff,
profiler));
}
}
public ulong CountPredicateRelationships(ulong predicateId, BrightstarProfiler profiler)
{
PredicateRelatedResourceIndex predicateIndex = GetPredicateIndex(predicateId, profiler);
if (predicateIndex != null)
{
return((ulong)predicateIndex.Scan(MakePredicateIndexKey(0, 0, 0),
MakePredicateIndexKey(ulong.MaxValue, int.MaxValue, ulong.MaxValue), profiler)
.LongCount());
}
return(0UL);
}
private PredicateRelatedResourceIndex GetPredicateIndex(ulong predicateId, ulong rootPageId, BrightstarProfiler profiler)
{
lock (_predicateIndexes)
{
PredicateRelatedResourceIndex predicateIndex;
if (_predicateIndexes.TryGetValue(predicateId, out predicateIndex))
{
return(predicateIndex);
}
predicateIndex = new PredicateRelatedResourceIndex(PageStore, rootPageId);
_predicateIndexes[predicateId] = predicateIndex;
return(predicateIndex);
}
}
/// <summary>
/// Enumerates all of the related resources stored for a single predicate
/// </summary>
/// <param name="predicateId"></param>
/// <param name="profiler"></param>
/// <returns></returns>
public IEnumerable <IResourceRelationship> EnumeratePredicateRelationships(ulong predicateId, BrightstarProfiler profiler)
{
PredicateRelatedResourceIndex predicateIndex = GetPredicateIndex(predicateId, profiler);
if (predicateIndex != null)
{
foreach (var entry in predicateIndex.Scan(MakePredicateIndexKey(0, 0, 0), MakePredicateIndexKey(ulong.MaxValue, int.MaxValue, ulong.MaxValue), profiler))
{
var thisResource = GetResourceIdFromKey(entry.Key);
var graphId = GetGraphIdFromKey(entry.Key);
var relatedResource = GetRelatedResourceIdFromKey(entry.Key);
yield return(new ResourceRelationship(thisResource, predicateId, relatedResource, graphId));
}
}
}
private PredicateRelatedResourceIndex AssertPredicateIndex(ulong transactionId, ulong predicateId, BrightstarProfiler profiler)
{
using (profiler.Step("AssertPredicateIndex"))
{
PredicateRelatedResourceIndex predicateIndex = GetPredicateIndex(predicateId, profiler);
if (predicateIndex == null)
{
using (profiler.Step("New Predicate Index"))
{
predicateIndex = new PredicateRelatedResourceIndex(transactionId, PageStore);
_predicateIndexes[predicateId] = predicateIndex;
}
}
return(predicateIndex);
}
}
private PredicateRelatedResourceIndex GetPredicateIndex(ulong predicateId, BrightstarProfiler profiler)
{
lock (_predicateIndexes)
{
PredicateRelatedResourceIndex predicateIndex;
if (_predicateIndexes.TryGetValue(predicateId, out predicateIndex))
{
return(predicateIndex);
}
var buff = new byte[8];
if (Search(predicateId, buff, profiler))
{
ulong predicateIndexRoot = BitConverter.ToUInt64(buff, 0);
predicateIndex = new PredicateRelatedResourceIndex(PageStore, predicateIndexRoot);
_predicateIndexes[predicateId] = predicateIndex;
return(predicateIndex);
}
return(null);
}
}
private PredicateRelatedResourceIndex GetPredicateIndex(ulong predicateId, BrightstarProfiler profiler)
{
lock (_predicateIndexes)
{
PredicateRelatedResourceIndex predicateIndex;
if (_predicateIndexes.TryGetValue(predicateId, out predicateIndex))
{
return predicateIndex;
}
var buff = new byte[8];
if (Search(predicateId, buff, profiler))
{
ulong predicateIndexRoot = BitConverter.ToUInt64(buff, 0);
predicateIndex = new PredicateRelatedResourceIndex(PageStore, predicateIndexRoot);
_predicateIndexes[predicateId] = predicateIndex;
return predicateIndex;
}
return null;
}
}
private PredicateRelatedResourceIndex GetPredicateIndex(ulong predicateId, ulong rootPageId, BrightstarProfiler profiler)
{
lock(_predicateIndexes)
{
PredicateRelatedResourceIndex predicateIndex;
if (_predicateIndexes.TryGetValue(predicateId, out predicateIndex)) return predicateIndex;
predicateIndex = new PredicateRelatedResourceIndex(PageStore, rootPageId);
_predicateIndexes[predicateId] = predicateIndex;
return predicateIndex;
}
}
private PredicateRelatedResourceIndex AssertPredicateIndex(ulong transactionId, ulong predicateId, BrightstarProfiler profiler)
{
using (profiler.Step("AssertPredicateIndex"))
{
PredicateRelatedResourceIndex predicateIndex = GetPredicateIndex(predicateId, profiler);
if (predicateIndex == null)
{
using (profiler.Step("New Predicate Index"))
{
predicateIndex = new PredicateRelatedResourceIndex(transactionId, PageStore);
_predicateIndexes[predicateId] = predicateIndex;
}
}
return predicateIndex;
}
}