public IList Get(QueryKey key, ICacheAssembler[] returnTypes, bool isNaturalKeyLookup, ISet <string> spaces,
ISessionImplementor session)
{
if (log.IsDebugEnabled)
{
log.DebugFormat("checking cached query results in region: '{0}'; {1}", regionName, key);
}
var cacheable = (IList)queryCache.Get(key);
if (cacheable == null)
{
log.DebugFormat("query results were not found in cache: {0}", key);
return(null);
}
var timestamp = (long)cacheable[0];
if (log.IsDebugEnabled)
{
log.DebugFormat("Checking query spaces for up-to-dateness [{0}]", StringHelper.CollectionToString((ICollection)spaces));
}
if (!isNaturalKeyLookup && !IsUpToDate(spaces, timestamp))
{
log.DebugFormat("cached query results were not up to date for: {0}", key);
return(null);
}
log.DebugFormat("returning cached query results for: {0}", key);
for (int i = 1; i < cacheable.Count; i++)
{
if (returnTypes.Length == 1)
{
returnTypes[0].BeforeAssemble(cacheable[i], session);
}
else
{
TypeFactory.BeforeAssemble((object[])cacheable[i], returnTypes, session);
}
}
IList result = new List <object>(cacheable.Count - 1);
for (int i = 1; i < cacheable.Count; i++)
{
try
{
if (returnTypes.Length == 1)
{
result.Add(returnTypes[0].Assemble(cacheable[i], session, null));
}
else
{
result.Add(TypeFactory.Assemble((object[])cacheable[i], returnTypes, session, null));
}
}
catch (UnresolvableObjectException)
{
if (isNaturalKeyLookup)
{
//TODO: not really completely correct, since
// the UnresolvableObjectException could occur while resolving
// associations, leaving the PC in an inconsistent state
log.Debug("could not reassemble cached result set");
queryCache.Remove(key);
return(null);
}
throw;
}
}
return(result);
}
