// Look up a schema based on site, histology and an optional discriminator.
// @param lookup schema lookup input
// @return a list of StagingSchemaInfo objects
public List <StagingSchema> lookupSchema(SchemaLookup lookup)
{
List <StagingSchema> lstRetval = null;
// If doing a more broad lookup without giving both site and histology, do not use the cache. I don't want to cache
// since the results could include all the data
if (lookup.getSite() == null || lookup.getHistology() == null)
{
return(getSchemas(lookup));
}
// Dictionary for cache.
String sIDString = lookup.GetHashString();
if (!mLookupMemoryDict.TryGetValue(sIDString, out lstRetval))
{
if (miLookupMemoryDictCount > NUM_ITEMS_IN_CACHE_CAUSES_TRIM)
{
mLookupMemoryDict.Clear();
Interlocked.Exchange(ref miLookupMemoryDictCount, 0);
}
lstRetval = getSchemas(lookup);
if (mLookupMemoryDict.TryAdd(sIDString, lstRetval))
{
Interlocked.Increment(ref miLookupMemoryDictCount);
}
}
return(lstRetval);
}
