private void LoadList(SoodaTransaction transaction, SoodaWhereClause whereClause, SoodaOrderBy orderBy, int startIdx, int pageCount, SoodaSnapshotOptions options, string[] involvedClassNames, bool useCache)
{
ISoodaObjectFactory factory = transaction.GetFactory(classInfo);
string cacheKey = null;
if (useCache)
{
// cache makes sense only on clean database
if (!transaction.HasBeenPrecommitted(classInfo))
{
cacheKey = SoodaCache.GetCollectionKey(classInfo, whereClause);
}
IEnumerable keysCollection = transaction.LoadCollectionFromCache(cacheKey, logger);
if (keysCollection != null)
{
foreach (object o in keysCollection)
{
SoodaObject obj = factory.GetRef(transaction, o);
// this binds to cache
obj.EnsureFieldsInited();
items.Add(obj);
}
if (orderBy != null)
{
items.Sort(orderBy.GetComparer());
}
count = items.Count;
if (startIdx > 0)
{
if (startIdx < count)
{
items.RemoveRange(0, startIdx);
}
else
{
items.Clear();
}
}
if (pageCount != -1 && pageCount < items.Count)
{
items.RemoveRange(pageCount, items.Count - pageCount);
}
return;
}
}
SoodaDataSource ds = transaction.OpenDataSource(classInfo.GetDataSource());
if ((options & SoodaSnapshotOptions.KeysOnly) != 0)
{
if (pageCount != -1)
{
using (IDataReader reader = ds.LoadMatchingPrimaryKeys(transaction.Schema, classInfo, whereClause, orderBy, 0, -1))
{
count = 0;
while (reader.Read())
{
count++;
}
}
}
using (IDataReader reader = ds.LoadMatchingPrimaryKeys(transaction.Schema, classInfo, whereClause, orderBy, startIdx, pageCount))
{
while (reader.Read())
{
SoodaObject obj = SoodaObject.GetRefFromKeyRecordHelper(transaction, factory, reader);
items.Add(obj);
}
if (pageCount == -1)
{
count = items.Count;
}
}
}
else
{
if (pageCount != -1)
{
using (IDataReader reader = ds.LoadMatchingPrimaryKeys(transaction.Schema, classInfo, whereClause, orderBy, 0, -1))
{
count = 0;
while (reader.Read())
{
count++;
}
}
}
TableInfo[] loadedTables;
using (IDataReader reader = ds.LoadObjectList(transaction.Schema, classInfo, whereClause, orderBy, startIdx, pageCount, options, out loadedTables))
{
while (reader.Read())
{
SoodaObject obj = SoodaObject.GetRefFromRecordHelper(transaction, factory, reader, 0, loadedTables, 0);
if ((options & SoodaSnapshotOptions.VerifyAfterLoad) != 0 && whereClause != null && !whereClause.Matches(obj, false))
{
continue; // don't add the object
}
items.Add(obj);
}
if (pageCount == -1)
{
count = items.Count;
}
}
}
if (cacheKey != null && useCache && startIdx == 0 && pageCount == -1 && involvedClassNames != null)
{
TimeSpan expirationTimeout;
bool slidingExpiration;
if (transaction.CachingPolicy.GetExpirationTimeout(
classInfo, whereClause, orderBy, startIdx, pageCount, items.Count,
out expirationTimeout, out slidingExpiration))
{
transaction.StoreCollectionInCache(cacheKey, classInfo, items, involvedClassNames, (options & SoodaSnapshotOptions.KeysOnly) == 0, expirationTimeout, slidingExpiration);
}
}
}