com.smoketurner.notification.application.riak.NotificationListDeletion Maven / Gradle / Ivy

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/**
 * Copyright 2016 Smoke Turner, LLC.
 *
 * 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.smoketurner.notification.application.riak;

import java.util.Collection;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.basho.riak.client.api.commands.kv.UpdateValue;

public class NotificationListDeletion
        extends UpdateValue.Update {

    private static final Logger LOGGER = LoggerFactory
            .getLogger(NotificationListDeletion.class);
    private final Collection ids;

    /**
     * Constructor
     *
     * @param ids
     *            Notification IDs to delete
     */
    public NotificationListDeletion(@Nonnull final Collection ids) {
        this.ids = Objects.requireNonNull(ids);
    }

    @Override
    public NotificationListObject apply(
            @Nullable NotificationListObject original) {
        if (original == null) {
            LOGGER.debug("original is null, creating new notification list");
            original = new NotificationListObject();
        }
        original.deleteNotifications(ids);
        return original;
    }
}