protected override IEnumerable <TransactionDeclarationEntity> Transform(DataTransformationContext context)
{
var signedLedgerState = context.SignedLedgerState;
var list = new List <TransactionDeclarationEntity>();
var processed = new ProcessedDeclarations();
var declarationContext = new TransactionDeclarationContext();
var transactions = signedLedgerState.Ledger.Ledger.Block.Transactions;
foreach (var transaction in transactions)
{
var hash = transaction.Hash;
var index = 0;
foreach (var declaration in transaction.Transaction.Declarations)
{
var entity = new TransactionDeclarationEntity(hash, index++, GetDeclarationId(declaration, processed));
list.Add(entity);
processed.Add(entity, declaration);
declarationContext.TryAdd(entity, declaration);
}
}
context.SetDeclarations(declarationContext);
return(list);
}
// we make sure that this transformer is called before other transformers of subtypes
private long GetDeclarationId(TxDeclaration declaration, ProcessedDeclarations processed)
{
var repositoryManager = DatabaseService.RepositoryManager;
long?id = null;
TransactionDeclarationEntity processedDeclaration;
switch (declaration.Type)
{
case DeclarationType.MultiSignature:
var multi = (MultiSignature)declaration;
// case 1 transactions in this batch (ledger) has same declaration several times. We take id of the first occurence
if (processed.MultiSignatures.TryGetValue(multi, out processedDeclaration))
{
id = processedDeclaration.DeclarationId;
break;
}
// Case 2 the original declaration was submitted before this batch (ledger)
id = repositoryManager.GetRepository <MultiSignatureAccountRepository>().GetByAddress(multi.Address)?.DeclarationId;
break;
case DeclarationType.HashLock:
var hashlock = (HashLock)declaration;
// case 1 transactions in this batch (ledger) has same declaration several times. We take id of the first occurence
if (processed.HashLocks.TryGetValue(hashlock, out processedDeclaration))
{
id = processedDeclaration.DeclarationId;
break;
}
// Case 2 the original declaration was submitted before this batch (ledger)
id = repositoryManager.GetRepository <HashLockRepository>().GetByAddress(hashlock.Address)?.DeclarationId;
break;
case DeclarationType.TimeLock:
var timelock = (TimeLock)declaration;
// case 1 transactions in this batch (ledger) has same declaration several times. We take id of the first occurence
if (processed.TimeLocks.TryGetValue(timelock, out processedDeclaration))
{
id = processedDeclaration.DeclarationId;
break;
}
// Case 2 the original declaration was submitted before this batch (ledger)
id = repositoryManager.GetRepository <TimeLockRepository>().GetByAddress(timelock.Address)?.DeclarationId;
break;
case DeclarationType.VendingMachine:
var machine = (VendingMachine)declaration;
// case 1 transactions in this batch (ledger) has same declaration several times. We take id of the first occurence
if (processed.VendingMachines.TryGetValue(machine, out processedDeclaration))
{
id = processedDeclaration.DeclarationId;
break;
}
// Case 2 the original declaration was submitted before this batch (ledger)
id = repositoryManager.GetRepository <VendingMachineRepository>().GetByAddress(machine.Address)?.DeclarationId;
break;
}
//
// checked if this delaration already exist
// get id from txdxEntity
return(id ?? Repository.GetNextId());
}
