added getFetchSize()

src/main/java/com/firebolt/jdbc/resultset/FireboltResultSet.java

@@ -684,9 +684,8 @@ public void setFetchDirection(int direction) throws SQLException {
 	}
 
 	@Override
-	@NotImplemented
 	public int getFetchSize() throws SQLException {
-		throw new FireboltUnsupportedOperationException();
+		return 0; // fetch size is not supported; 0 means unlimited like in PostgreSQL and MySQL
 	}
 
 	@Override

src/main/java/com/firebolt/jdbc/statement/FireboltStatement.java

@@ -5,6 +5,7 @@
 import com.firebolt.jdbc.annotation.NotImplemented;
 import com.firebolt.jdbc.connection.FireboltConnection;
 import com.firebolt.jdbc.connection.settings.FireboltProperties;
+import com.firebolt.jdbc.exception.ExceptionType;
 import com.firebolt.jdbc.exception.FireboltException;
 import com.firebolt.jdbc.exception.FireboltSQLFeatureNotSupportedException;
 import com.firebolt.jdbc.exception.FireboltUnsupportedOperationException;
@@ -386,15 +387,15 @@ public int getFetchDirection() throws SQLException {
 	}
 
 	@Override
-	@ExcludeFromJacocoGeneratedReport
 	public void setFetchDirection(int direction) throws SQLException {
-		// no-op
+		if (direction != ResultSet.FETCH_FORWARD) {
+			throw new FireboltException(ExceptionType.TYPE_NOT_SUPPORTED);
+		}
 	}
 
 	@Override
-	@NotImplemented
 	public int getFetchSize() throws SQLException {
-		return 0;
+		return 0; // fetch size is not supported; 0 means unlimited like in PostgreSQL and MySQL
 	}
 
 	@Override

src/test/java/com/firebolt/jdbc/resultset/FireboltResultSetTest.java

@@ -268,7 +268,7 @@ void unsupported() throws SQLException {
 	void fetchSize() throws SQLException {
 		inputStream = getInputStreamWithCommonResponseExample();
 		resultSet = new FireboltResultSet(inputStream, "any_name", "array_db", 65535);
-		assertThrows(SQLFeatureNotSupportedException.class, () -> resultSet.getFetchSize());
+		assertEquals(0, resultSet.getFetchSize());
 
 		resultSet.setFetchSize(0); // ignored
 		resultSet.setFetchSize(1); // ignored