public bool TryGetTransaction(UInt256 txHash, out UnspentTx unspentTx)
{
Api.JetBeginTransaction2(this.jetSession, BeginTransactionGrbit.ReadOnly);
try
{
//Api.JetSetCurrentIndex(this.jetSession, this.unspentTxTableId, "IX_TxHash");
Api.MakeKey(this.jetSession, this.unspentTxTableId, txHash.ToByteArray(), MakeKeyGrbit.NewKey);
if (Api.TrySeek(this.jetSession, this.unspentTxTableId, SeekGrbit.SeekEQ))
{
var confirmedBlockHash = new UInt256(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.confirmedBlockHashColumnId));
var outputStates = DataEncoder.DecodeOutputStates(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.outputStatesColumnId));
unspentTx = new UnspentTx(confirmedBlockHash, outputStates);
return(true);
}
else
{
unspentTx = default(UnspentTx);
return(false);
}
}
finally
{
Api.JetCommitTransaction(this.jetSession, CommitTransactionGrbit.LazyFlush);
}
}
public bool TryRemoveUnspentTx(UInt256 txHash)
{
if (!this.inTransaction)
{
throw new InvalidOperationException();
}
Api.JetSetCurrentIndex(this.jetSession, this.unspentTxTableId, "IX_TxHash");
Api.MakeKey(this.jetSession, this.unspentTxTableId, DbEncoder.EncodeUInt256(txHash), MakeKeyGrbit.NewKey);
if (Api.TrySeek(this.jetSession, this.unspentTxTableId, SeekGrbit.SeekEQ))
{
var addedBlockIndex = Api.RetrieveColumnAsInt32(this.jetSession, this.unspentTxTableId, this.blockIndexColumnId).Value;
var txIndex = Api.RetrieveColumnAsInt32(this.jetSession, this.unspentTxTableId, this.txIndexColumnId).Value;
var outputStates = DataEncoder.DecodeOutputStates(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.outputStatesColumnId));
Api.JetDelete(this.jetSession, this.unspentTxTableId);
// decrease unspent tx count
Api.EscrowUpdate(this.jetSession, this.globalsTableId, this.unspentTxCountColumnId, -1);
return(true);
}
else
{
return(false);
}
}
public IEnumerable <UnspentTx> ReadUnspentTransactions()
{
Api.JetSetCurrentIndex(this.jetSession, this.unspentTxTableId, "IX_TxHash");
if (Api.TryMoveFirst(this.jetSession, this.unspentTxTableId))
{
do
{
var txHash = DbEncoder.DecodeUInt256(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.txHashColumnId));
var blockIndex = Api.RetrieveColumnAsInt32(this.jetSession, this.unspentTxTableId, this.blockIndexColumnId).Value;
var txIndex = Api.RetrieveColumnAsInt32(this.jetSession, this.unspentTxTableId, this.txIndexColumnId).Value;
var outputStates = DataEncoder.DecodeOutputStates(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.outputStatesColumnId));
yield return(new UnspentTx(txHash, blockIndex, txIndex, outputStates));
} while (Api.TryMoveNext(this.jetSession, this.unspentTxTableId));
}
}
public bool TryGetUnspentTx(UInt256 txHash, out UnspentTx unspentTx)
{
Api.JetSetCurrentIndex(this.jetSession, this.unspentTxTableId, "IX_TxHash");
Api.MakeKey(this.jetSession, this.unspentTxTableId, DbEncoder.EncodeUInt256(txHash), MakeKeyGrbit.NewKey);
if (Api.TrySeek(this.jetSession, this.unspentTxTableId, SeekGrbit.SeekEQ))
{
var blockIndex = Api.RetrieveColumnAsInt32(this.jetSession, this.unspentTxTableId, this.blockIndexColumnId).Value;
var txIndex = Api.RetrieveColumnAsInt32(this.jetSession, this.unspentTxTableId, this.txIndexColumnId).Value;
var outputStates = DataEncoder.DecodeOutputStates(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.outputStatesColumnId));
unspentTx = new UnspentTx(txHash, blockIndex, txIndex, outputStates);
return(true);
}
unspentTx = default(UnspentTx);
return(false);
}
public IEnumerable <KeyValuePair <UInt256, UnspentTx> > UnspentTransactions()
{
Api.JetBeginTransaction2(this.jetSession, BeginTransactionGrbit.ReadOnly);
try
{
//Api.JetSetCurrentIndex(this.jetSession, this.unspentTxTableId, "IX_TxHash");
Api.MoveBeforeFirst(this.jetSession, this.unspentTxTableId);
while (Api.TryMoveNext(this.jetSession, this.unspentTxTableId))
{
var txHash = new UInt256(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.txHashColumnId));
var confirmedBlockHash = new UInt256(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.confirmedBlockHashColumnId));
var outputStates = DataEncoder.DecodeOutputStates(Api.RetrieveColumn(this.jetSession, this.unspentTxTableId, this.outputStatesColumnId));
yield return(new KeyValuePair <UInt256, UnspentTx>(txHash, new UnspentTx(confirmedBlockHash, outputStates)));
}
}
finally
{
Api.JetCommitTransaction(this.jetSession, CommitTransactionGrbit.LazyFlush);
}
}
