/*
* 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.util.LinkedHashMap;
import java.util.Map;
import java.util.stream.Stream;
A row reducer that uses LinkedHashMap
(which preserves insertion order) as a result container, and returns map.values().stream()
as the final result. Implementors need only implement the RowReducer.accumulate(Object, RowView)
method.
Type parameters:
/**
* A row reducer that uses {@link LinkedHashMap} (which preserves insertion order) as a
* result container, and returns {@code map.values().stream()} as the final result.
*
* <p>Implementors need only implement the {@link #accumulate(Object, RowView)} method.
*
* @param <K> the map key type--often the primary key type of {@code <V>}.
* @param <V> the map value type, and the result element type--often the "master" object in a
* master/detail relation.
*/
@FunctionalInterface
public interface LinkedHashMapRowReducer<K, V> extends RowReducer<Map<K, V>, V> {
@Override
default Map<K, V> container() {
return new LinkedHashMap<>();
}
@Override
default Stream<V> stream(Map<K, V> container) {
return container.values().stream();
}
}