public StorageResult <TValue> GetDocument <TKey, TValue>(string collection, TKey key)
{
StorageResult <TValue> result = new StorageResult <TValue>();
if (string.IsNullOrEmpty(collection))
{
throw new ArgumentException("Collection name can not be null or empty.");
}
if (!CollectionExists(collection))
{
throw new ArgumentException("Specified collection not found in " + GetFileInfo() + " Collection = " + collection);
}
ReadTransaction transaction = null;
try
{
if (_readerTransaction != null)
{
if (_readerTransaction.ShouldRenew)
{
_readerTransaction.WaitUntillFree();
}
}
lock (_readerTransactionLock)
{
if (_readerTransaction == null || !_readerTransaction.Running)
{
_readerTransaction = new ReadTransaction(BeginTransaction(null, true));
}
transaction = _readerTransaction;
transaction.Enter();
}
ValidateTransaction(transaction.Transaction);
LightningTransaction lmdbTransaction = (LightningTransaction)transaction.Transaction.InnerObject;
byte[] keyBytes = _environment.ConverterStore.GetToBytes <TKey>().Convert(_collectionTable[collection].Collection, key);
byte[] valueBytes = lmdbTransaction.Get(_collectionTable[collection].Collection, keyBytes);
result.Document = _environment.ConverterStore.GetFromBytes <TValue>().Convert(_collectionTable[collection].Collection, valueBytes);
}
finally
{
if (transaction != null)
{
transaction.Exit();
}
}
result.Status = StoreResult.Success;
return(result);
}
public IDataReader <TKey, TValue> GetAllDocuments <TKey, TValue>(string collection)
{
if (string.IsNullOrEmpty(collection))
{
throw new ArgumentException("Collection name can not be null or empty.");
}
if (!CollectionExists(collection))
{
throw new ArgumentException("Specified collection not found in " + GetFileInfo() + " Collection = " + collection);
}
ReadTransaction transaction = null;
try
{
if (_readerTransaction != null)
{
if (_readerTransaction.ShouldRenew)
{
_readerTransaction.WaitUntillFree();
}
}
lock (_readerTransactionLock)
{
if (_readerTransaction == null || !_readerTransaction.Running)
{
_readerTransaction = new ReadTransaction(BeginTransaction(null, true));
}
transaction = _readerTransaction;
transaction.Enter();
}
ValidateTransaction(transaction.Transaction);
LightningTransaction lmdbTransaction = (LightningTransaction)transaction.Transaction.InnerObject;
LightningCursor cursor = lmdbTransaction.CreateCursor(_collectionTable[collection].Collection);
LMDBDataReader <TKey, TValue> reader = new LMDBDataReader <TKey, TValue>(cursor.GetEnumerator(), _environment, _collectionTable[collection].Collection);
return(reader);
}
finally
{
if (transaction != null)
{
transaction.Exit();
}
}
}
