protected TransactionSummary transform(
Transaction tx, int time, int height, int blockChainHeight) {
long value = 0;
Address destAddress = null;
for (TransactionOutput output : tx.outputs) {
if (isMine(output.script)) {
value += output.value;
} else {
destAddress = output.script.getAddress(_network);
}
}
if (tx.isCoinbase()) {
// For coinbase transactions there is nothing to subtract
} else {
for (TransactionInput input : tx.inputs) {
// find parent output
TransactionOutputEx funding = _backing.getParentTransactionOutput(input.outPoint);
if (funding == null) {
_logger.logError("Unable to find parent output for: " + input.outPoint);
continue;
}
if (isMine(funding)) {
value -= funding.value;
}
}
}
int confirmations;
if (height == -1) {
confirmations = 0;
} else {
confirmations = Math.max(0, blockChainHeight - height + 1);
}
// only track a destinationAddress if it is an outgoing transaction (i.e. send money to someone)
// to prevent the user that he tries to return money to an address he got bitcoin from.
if (value >= 0) {
destAddress = null;
}
boolean isQueuedOutgoing = _backing.isOutgoingTransaction(tx.getHash());
return new TransactionSummary(
tx.getHash(),
value,
time,
height,
confirmations,
isQueuedOutgoing,
com.google.common.base.Optional.fromNullable(destAddress));
}
@Override
public List<TransactionOutputSummary> getUnspentTransactionOutputSummary() {
// Note that this method is not synchronized, and we might fetch the transaction history while
// synchronizing
// accounts. That should be ok as we write to the DB in a sane order.
// Get all unspent outputs for this account
Collection<TransactionOutputEx> outputs = _backing.getAllUnspentOutputs();
// Transform it to a list of summaries
List<TransactionOutputSummary> list = new ArrayList<TransactionOutputSummary>();
int blockChainHeight = getBlockChainHeight();
for (TransactionOutputEx output : outputs) {
ScriptOutput script = ScriptOutput.fromScriptBytes(output.script);
Address address;
if (script == null) {
address = Address.getNullAddress(_network);
// This never happens as we have parsed this script before
} else {
address = script.getAddress(_network);
}
int confirmations;
if (output.height == -1) {
confirmations = 0;
} else {
confirmations = Math.max(0, blockChainHeight - output.height + 1);
}
TransactionOutputSummary summary =
new TransactionOutputSummary(
output.outPoint, output.value, output.height, confirmations, address);
list.add(summary);
}
// Sort & return
Collections.sort(list);
return list;
}