Added "txTypes" parameter to GET /transactions/unconfirmed, to allow optional filtering of unconfirmed transactions by one or more types

src/main/java/org/qortal/api/resource/TransactionsResource.java

@@ -253,6 +253,8 @@ public class TransactionsResource {
 		ApiError.REPOSITORY_ISSUE
 	})
 	public List<TransactionData> getUnconfirmedTransactions(@Parameter(
+			description = "A list of transaction types"
+	) @QueryParam("txType") List<TransactionType> txTypes, @Parameter(
 			description = "Transaction creator's base58 encoded public key"
 	) @QueryParam("creator") String creatorPublicKey58, @Parameter(
 		ref = "limit"
@@ -273,7 +275,7 @@ public class TransactionsResource {
 		}
 
 		try (final Repository repository = RepositoryManager.getRepository()) {
-			return repository.getTransactionRepository().getUnconfirmedTransactions(creatorPublicKey, limit, offset, reverse);
+			return repository.getTransactionRepository().getUnconfirmedTransactions(txTypes, creatorPublicKey, limit, offset, reverse);
 		} catch (ApiException e) {
 			throw e;
 		} catch (DataException e) {

src/main/java/org/qortal/repository/TransactionRepository.java

@@ -257,7 +257,8 @@ public interface TransactionRepository {
 	 * @return list of transactions, or empty if none.
 	 * @throws DataException
 	 */
-	public List<TransactionData> getUnconfirmedTransactions(byte[] creatorPublicKey, Integer limit, Integer offset, Boolean reverse) throws DataException;
+	public List<TransactionData> getUnconfirmedTransactions(List<TransactionType> txTypes, byte[] creatorPublicKey,
+															Integer limit, Integer offset, Boolean reverse) throws DataException;
 
 	/**
 	 * Returns list of unconfirmed transactions in timestamp-else-signature order.
@@ -266,7 +267,7 @@ public interface TransactionRepository {
 	 * @throws DataException
 	 */
 	public default List<TransactionData> getUnconfirmedTransactions() throws DataException {
-		return getUnconfirmedTransactions(null, null, null, null);
+		return getUnconfirmedTransactions(null, null, null, null, null);
 	}
 
 	/**

src/main/java/org/qortal/repository/hsqldb/transaction/HSQLDBTransactionRepository.java

@@ -1213,21 +1213,43 @@ public class HSQLDBTransactionRepository implements TransactionRepository {
 	}
 
 	@Override
-	public List<TransactionData> getUnconfirmedTransactions(byte[] creatorPublicKey, Integer limit, Integer offset, Boolean reverse) throws DataException {
+	public List<TransactionData> getUnconfirmedTransactions(List<TransactionType> txTypes, byte[] creatorPublicKey,
+															Integer limit, Integer offset, Boolean reverse) throws DataException {
 		List<String> whereClauses = new ArrayList<>();
 		List<Object> bindParams = new ArrayList<>();
 
+		boolean hasCreatorPublicKey = creatorPublicKey != null;
+		boolean hasTxTypes = txTypes != null && !txTypes.isEmpty();
+
 		if (creatorPublicKey != null) {
-			whereClauses.add("creator = ?");
+			whereClauses.add("Transactions.creator = ?");
 			bindParams.add(creatorPublicKey);
 		}
 
 		StringBuilder sql = new StringBuilder(256);
 		sql.append("SELECT signature FROM UnconfirmedTransactions");
-		if (creatorPublicKey != null) {
+		if (hasCreatorPublicKey || hasTxTypes) {
 			sql.append(" JOIN Transactions USING (signature) ");
 		}
 
+		if (hasTxTypes) {
+			StringBuilder txTypesIn = new StringBuilder(256);
+			txTypesIn.append("Transactions.type IN (");
+
+			// ints are safe enough to use literally
+			final int txTypesSize = txTypes.size();
+			for (int tti = 0; tti < txTypesSize; ++tti) {
+				if (tti != 0)
+					txTypesIn.append(", ");
+
+				txTypesIn.append(txTypes.get(tti).value);
+			}
+
+			txTypesIn.append(")");
+
+			whereClauses.add(txTypesIn.toString());
+		}
+
 		if (!whereClauses.isEmpty()) {
 			sql.append(" WHERE ");
 

src/test/java/org/qortal/test/api/TransactionsApiTests.java

@@ -36,8 +36,8 @@ public class TransactionsApiTests extends ApiCommon {
 
 	@Test
 	public void testGetUnconfirmedTransactions() {
-		assertNotNull(this.transactionsResource.getUnconfirmedTransactions(null, null, null, null));
-		assertNotNull(this.transactionsResource.getUnconfirmedTransactions(null, 1, 1, true));
+		assertNotNull(this.transactionsResource.getUnconfirmedTransactions(null, null, null, null, null));
+		assertNotNull(this.transactionsResource.getUnconfirmedTransactions(null, null, 1, 1, true));
 	}
 
 	@Test