001/**
002 * Copyright 2015 DuraSpace, Inc.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016/**
017 *
018 */
019
020package org.fcrepo.kernel.impl.observer.eventmappings;
021
022import static com.google.common.collect.Iterators.transform;
023
024import java.util.Iterator;
025
026import javax.jcr.observation.Event;
027
028import org.fcrepo.kernel.observer.FedoraEvent;
029import com.google.common.base.Function;
030import org.fcrepo.kernel.observer.eventmappings.InternalExternalEventMapper;
031
032/**
033 * Maps each JCR {@link Event} to a single {@link FedoraEvent}
034 *
035 * @author ajs6f
036 * @since Feb 27, 2014
037 */
038public class OneToOne implements InternalExternalEventMapper {
039
040    private static final Function<Event, FedoraEvent> TO_FEDORA_EVENT = new Function<Event, FedoraEvent>() {
041
042        @Override
043        public FedoraEvent apply(final Event e) {
044            return new FedoraEvent(e);
045        }
046    };
047
048    @Override
049    public Iterator<FedoraEvent> apply(final Iterator<Event> jcrEvents) {
050        return transform(jcrEvents, TO_FEDORA_EVENT);
051    }
052}