public SpentOutputsStorage(string baseDirectory)
: base(baseDirectory, "SpentOutputs",
keyPairs =>
{
using (var stream = new MemoryStream())
{
foreach (var keyPair in keyPairs)
{
DataEncoder.EncodeTxOutputKey(stream, keyPair.Key);
DataEncoder.EncodeTxOutput(stream, keyPair.Value);
}
return(stream.ToArray());
}
},
(blockHash, bytes) =>
{
using (var stream = new MemoryStream(bytes))
{
var keyPairs = ImmutableList.CreateBuilder <KeyValuePair <TxOutputKey, TxOutput> >();
while (stream.Position < stream.Length)
{
var txOutputKey = DataEncoder.DecodeTxOutputKey(stream);
var txOutput = DataEncoder.DecodeTxOutput(stream);
keyPairs.Add(new KeyValuePair <TxOutputKey, TxOutput>(txOutputKey, txOutput));
}
return(keyPairs.ToImmutable());
}
})
{ }
public IEnumerable <KeyValuePair <TxOutputKey, TxOutput> > UnspentOutputs()
{
Api.JetBeginTransaction2(this.jetSession, BeginTransactionGrbit.ReadOnly);
try
{
//Api.JetSetCurrentIndex(this.jetSession, this.unspentTxOutputsTableId, "IX_TxOutputKey");
Api.MoveBeforeFirst(this.jetSession, this.unspentTxOutputsTableId);
while (Api.TryMoveNext(this.jetSession, this.unspentTxOutputsTableId))
{
var txOutputKey = DataEncoder.DecodeTxOutputKey(Api.RetrieveColumn(this.jetSession, this.unspentTxOutputsTableId, this.txOutputKeyColumnId));
var txOutputBytes = Api.RetrieveColumn(this.jetSession, this.unspentTxOutputsTableId, this.txOutputSmallColumnId);
if (txOutputBytes == null)
{
txOutputBytes = Api.RetrieveColumn(this.jetSession, this.unspentTxOutputsTableId, this.txOutputLargeColumnId);
}
var txOutput = DataEncoder.DecodeTxOutput(txOutputBytes);
yield return(new KeyValuePair <TxOutputKey, TxOutput>(txOutputKey, txOutput));
}
}
finally
{
Api.JetCommitTransaction(this.jetSession, CommitTransactionGrbit.LazyFlush);
}
}
