com.expediagroup.rhapsody.api.AcknowledgeableFactory Maven / Gradle / Ivy
/**
* Copyright 2019 Expedia, Inc.
*
* 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 com.expediagroup.rhapsody.api;
import java.util.Collection;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.stream.Collectors;
/**
* A Factory for creating Acknowledgeables of a type of data item. The simplest implementation of
* this factory is {@link ComposedAcknowledgeable ComposedAcknowledgeable::new}.
*
* @param The type of data items for which this factory creates Acknowledgeables
*/
public interface AcknowledgeableFactory {
/**
* Functional convenience method that inverts a List of Acknowledgeables in to an
* Acknowledgeable List of data items
*
* @param listToAcknowledgeableFactory Produce Factory from List of Acknowledgeables
* @param The type of data items in the List of Acknowledgeables
* @return A Function that inverts a List of Acknowledgeables to Acknowledgeable List
*/
static Function>, Acknowledgeable>>
listInverting(Function>, ? extends AcknowledgeableFactory>> listToAcknowledgeableFactory) {
return list -> {
List values = list.stream().map(Acknowledgeable::get).collect(Collectors.toList());
Collection acknowledgers = list.stream().map(Acknowledgeable::getAcknowledger).collect(Collectors.toList());
Collection> nacknowledgers = list.stream().map(Acknowledgeable::getNacknowledger).collect(Collectors.toList());
return listToAcknowledgeableFactory.apply(list)
.create(values, () -> acknowledgers.forEach(Runnable::run), error -> nacknowledgers.forEach(nacknowledger -> nacknowledger.accept(error)));
};
}
/**
* Create a new Acknowledgable from the supplied data item, Acknowledger, and Nacknowledger
*/
Acknowledgeable create(T t, Runnable acknowledger, Consumer nacknowledger);
}