private static void PerformBeforeAssemble(
ICacheAssembler[] returnTypes,
ISessionImplementor session,
IList cacheable)
{
if (returnTypes.Length == 1)
{
var returnType = returnTypes[0];
// Skip first element, it is the timestamp
for (var i = 1; i < cacheable.Count; i++)
{
returnType.BeforeAssemble(cacheable[i], session);
}
}
else
{
// Skip first element, it is the timestamp
for (var i = 1; i < cacheable.Count; i++)
{
TypeHelper.BeforeAssemble((object[])cacheable[i], returnTypes, session);
}
}
}
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(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 && !key.HasResultTransformer)
{
returnTypes[0].BeforeAssemble(cacheable[i], session);
}
else
{
TypeHelper.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 && !key.HasResultTransformer)
{
result.Add(returnTypes[0].Assemble(cacheable[i], session, null));
}
else
{
result.Add(TypeHelper.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);
}
private IList GetResultFromCacheable(
QueryKey key,
ICacheAssembler[] returnTypes,
bool isNaturalKeyLookup,
ISessionImplementor session,
IList cacheable)
{
Log.Debug("returning cached query results for: {0}", key);
if (key.ResultTransformer?.AutoDiscoverTypes == true && cacheable.Count > 0)
{
returnTypes = GuessTypes(cacheable);
}
try
{
var result = new List <object>(cacheable.Count - 1);
if (returnTypes.Length == 1)
{
var returnType = returnTypes[0];
// Skip first element, it is the timestamp
for (var i = 1; i < cacheable.Count; i++)
{
returnType.BeforeAssemble(cacheable[i], session);
}
for (var i = 1; i < cacheable.Count; i++)
{
result.Add(returnType.Assemble(cacheable[i], session, null));
}
}
else
{
var collectionIndexes = new Dictionary <int, ICollectionPersister>();
var nonCollectionTypeIndexes = new List <int>();
for (var i = 0; i < returnTypes.Length; i++)
{
if (returnTypes[i] is CollectionType collectionType)
{
collectionIndexes.Add(i, session.Factory.GetCollectionPersister(collectionType.Role));
}
else
{
nonCollectionTypeIndexes.Add(i);
}
}
// Skip first element, it is the timestamp
for (var i = 1; i < cacheable.Count; i++)
{
TypeHelper.BeforeAssemble((object[])cacheable[i], returnTypes, session);
}
for (var i = 1; i < cacheable.Count; i++)
{
result.Add(TypeHelper.Assemble((object[])cacheable[i], returnTypes, nonCollectionTypeIndexes, session));
}
// Initialization of the fetched collection must be done at the end in order to be able to batch fetch them
// from the cache or database. The collections were already created in the previous for statement so we only
// have to initialize them.
if (collectionIndexes.Count > 0)
{
for (var i = 1; i < cacheable.Count; i++)
{
TypeHelper.InitializeCollections((object[])cacheable[i], (object[])result[i - 1], collectionIndexes, session);
}
}
}
return(result);
}
catch (UnresolvableObjectException ex)
{
if (isNaturalKeyLookup)
{
//TODO: not really completely correct, since
// the UnresolvableObjectException could occur while resolving
// associations, leaving the PC in an inconsistent state
Log.Debug(ex, "could not reassemble cached result set");
// Handling a RemoveMany here does not look worth it, as this case short-circuits
// the result-set. So a Many could only benefit batched queries, and only if many
// of them are natural key lookup with an unresolvable object case.
Cache.Remove(key);
return(null);
}
throw;
}
}
private IList GetResultFromCacheable(
QueryKey key,
ICacheAssembler[] returnTypes,
bool isNaturalKeyLookup,
ISessionImplementor session,
IList cacheable)
{
Log.Debug("returning cached query results for: {0}", key);
if (key.ResultTransformer?.AutoDiscoverTypes == true && cacheable.Count > 0)
{
returnTypes = GuessTypes(cacheable);
}
try
{
var result = new List <object>(cacheable.Count - 1);
if (returnTypes.Length == 1)
{
var returnType = returnTypes[0];
// Skip first element, it is the timestamp
var rows = new List <object>(cacheable.Count - 1);
for (var i = 1; i < cacheable.Count; i++)
{
rows.Add(cacheable[i]);
}
foreach (var row in rows)
{
returnType.BeforeAssemble(row, session);
}
foreach (var row in rows)
{
result.Add(returnType.Assemble(row, session, null));
}
}
else
{
// Skip first element, it is the timestamp
var rows = new List <object[]>(cacheable.Count - 1);
for (var i = 1; i < cacheable.Count; i++)
{
rows.Add((object[])cacheable[i]);
}
foreach (var row in rows)
{
TypeHelper.BeforeAssemble(row, returnTypes, session);
}
foreach (var row in rows)
{
result.Add(TypeHelper.Assemble(row, returnTypes, session, null));
}
}
return(result);
}
catch (UnresolvableObjectException ex)
{
if (isNaturalKeyLookup)
{
//TODO: not really completely correct, since
// the UnresolvableObjectException could occur while resolving
// associations, leaving the PC in an inconsistent state
Log.Debug(ex, "could not reassemble cached result set");
// Handling a RemoveMany here does not look worth it, as this case short-circuits
// the result-set. So a Many could only benefit batched queries, and only if many
// of them are natural key lookup with an unresolvable object case.
Cache.Remove(key);
return(null);
}
throw;
}
}