/* * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.jdbi.v3.core.result; import java.sql.ResultSet; import java.sql.SQLException; import org.jdbi.v3.core.statement.StatementContext; /** * A {@link ResultSetAccumulator} repeatedly combines rows * from the given {@code ResultSet} to produce a single * result. {@code jdbi} will advance the {@code ResultSet} between * each method invocation, so don't call {@link ResultSet#next()} please. */ @FunctionalInterface public interface ResultSetAccumulator<T> { /** * Extract a single row from the result set, and combine it with the * accumulator to produce a result. * @param in the previous object * @param rs the ResultSet, please do not advance it * @param ctx the statement context * @return the accumulated value * @throws SQLException in the face of grave danger */ T apply(T in, ResultSet rs, StatementContext ctx) throws SQLException; }