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Add repository support for fetching subset of unconfirmed transactions by type and/or creator

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catbref 2020-11-26 16:10:13 +00:00
parent 90b993e234
commit e0210635e3
2 changed files with 69 additions and 0 deletions
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12
src/main/java/org/qortal/repository/TransactionRepository.java
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@ -239,6 +239,18 @@ public interface TransactionRepository {
return getUnconfirmedTransactions(null, null, null);
}
/**
* Returns list of unconfirmed transactions with specified type and/or creator.
* <p>
* At least one of <tt>txType</tt> or <tt>creatorPublicKey</tt> must be non-null.
*
* @param txType optional
* @param creatorPublicKey optional
* @return list of transactions, or empty if none.
* @throws DataException
*/
public List<TransactionData> getUnconfirmedTransactions(TransactionType txType, byte[] creatorPublicKey) throws DataException;
/**
* Remove transaction from unconfirmed transactions pile.
*

57
src/main/java/org/qortal/repository/hsqldb/transaction/HSQLDBTransactionRepository.java
View File

@ -1124,6 +1124,63 @@ public class HSQLDBTransactionRepository implements TransactionRepository {
}
}
@Override
public List<TransactionData> getUnconfirmedTransactions(TransactionType txType, byte[] creatorPublicKey) throws DataException {
if (txType == null && creatorPublicKey == null)
throw new IllegalArgumentException("At least one of txType or creatorPublicKey must be non-null");
StringBuilder sql = new StringBuilder(1024);
sql.append("SELECT signature FROM UnconfirmedTransactions ");
sql.append("JOIN Transactions USING (signature) ");
sql.append("WHERE ");
List<String> whereClauses = new ArrayList<>();
List<Object> bindParams = new ArrayList<>();
if (txType != null) {
whereClauses.add("type = ?");
bindParams.add(Integer.valueOf(txType.value));
}
if (creatorPublicKey != null) {
whereClauses.add("creator = ?");
bindParams.add(creatorPublicKey);
}
final int whereClausesSize = whereClauses.size();
for (int wci = 0; wci < whereClausesSize; ++wci) {
if (wci != 0)
sql.append(" AND ");
sql.append(whereClauses.get(wci));
}
sql.append("ORDER BY created_when, signature");
List<TransactionData> transactions = new ArrayList<>();
try (ResultSet resultSet = this.repository.checkedExecute(sql.toString(), bindParams.toArray())) {
if (resultSet == null)
return transactions;
do {
byte[] signature = resultSet.getBytes(1);
TransactionData transactionData = this.fromSignature(signature);
if (transactionData == null)
// Something inconsistent with the repository
throw new DataException(String.format("Unable to fetch unconfirmed transaction %s from repository?", Base58.encode(signature)));
transactions.add(transactionData);
} while (resultSet.next());
return transactions;
} catch (SQLException | DataException e) {
throw new DataException("Unable to fetch unconfirmed transactions from repository", e);
}
}
@Override
public void confirmTransaction(byte[] signature) throws DataException {
try {