protected static Collection<UnspentTransactionOutput> transform(
Collection<TransactionOutputEx> source) {
List<UnspentTransactionOutput> outputs = new ArrayList<UnspentTransactionOutput>();
for (TransactionOutputEx s : source) {
ScriptOutput script = ScriptOutput.fromScriptBytes(s.script);
outputs.add(new UnspentTransactionOutput(s.outPoint, s.height, s.value, script));
}
return outputs;
}
@Override
public TransactionDetails getTransactionDetails(Sha256Hash txid) {
// 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.
TransactionEx tex = _backing.getTransaction(txid);
Transaction tx = TransactionEx.toTransaction(tex);
if (tx == null) {
throw new RuntimeException();
}
List<TransactionDetails.Item> inputs = new ArrayList<TransactionDetails.Item>(tx.inputs.length);
if (tx.isCoinbase()) {
// We have a coinbase transaction. Create one input with the sum of the outputs as its value,
// and make the address the null address
long value = 0;
for (TransactionOutput out : tx.outputs) {
value += out.value;
}
inputs.add(new TransactionDetails.Item(Address.getNullAddress(_network), value, true));
} else {
// Populate the inputs
for (TransactionInput input : tx.inputs) {
Sha256Hash parentHash = input.outPoint.hash;
// Get the parent transaction
TransactionOutputEx parentOutput = _backing.getParentTransactionOutput(input.outPoint);
if (parentOutput == null) {
// We never heard about the parent, skip
continue;
}
// Determine the parent address
Address parentAddress;
ScriptOutput parentScript = ScriptOutput.fromScriptBytes(parentOutput.script);
if (parentScript == null) {
// Null address means we couldn't figure out the address, strange script
parentAddress = Address.getNullAddress(_network);
} else {
parentAddress = parentScript.getAddress(_network);
}
inputs.add(new TransactionDetails.Item(parentAddress, parentOutput.value, false));
}
}
// Populate the outputs
TransactionDetails.Item[] outputs = new TransactionDetails.Item[tx.outputs.length];
for (int i = 0; i < tx.outputs.length; i++) {
Address address = tx.outputs[i].script.getAddress(_network);
outputs[i] = new TransactionDetails.Item(address, tx.outputs[i].value, false);
}
return new TransactionDetails(
txid, tex.height, tex.time, inputs.toArray(new TransactionDetails.Item[] {}), outputs);
}
/**
* Determine whether a transaction was sent from one of our own addresses.
*
* <p>This is a costly operation as we have to lookup funding outputs of the transaction
*
* @param t the transaction to investigate
* @return true iff one of the funding outputs were sent from one of our own addresses
*/
protected boolean isFromMe(Transaction t) {
for (TransactionInput input : t.inputs) {
TransactionOutputEx funding = _backing.getParentTransactionOutput(input.outPoint);
if (funding == null || funding.isCoinBase) {
continue;
}
ScriptOutput fundingScript = ScriptOutput.fromScriptBytes(funding.script);
Address fundingAddress = fundingScript.getAddress(_network);
if (isMine(fundingAddress)) {
return true;
}
}
return false;
}
@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;
}
private TransactionOutput transform(TransactionOutputEx parent) {
ScriptOutput script = ScriptOutput.fromScriptBytes(parent.script);
return new TransactionOutput(parent.value, script);
}
/**
* Determine whether a transaction output was sent from one of our own addresses
*
* @param output the output to investigate
* @return true iff the putput was sent from one of our own addresses
*/
protected boolean isMine(TransactionOutputEx output) {
ScriptOutput script = ScriptOutput.fromScriptBytes(output.script);
return isMine(script);
}