001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.fcrepo.kernel.modeshape.observer;
019
020import static org.slf4j.LoggerFactory.getLogger;
021import static org.fcrepo.kernel.modeshape.observer.FedoraEventImpl.getResourceTypes;
022
023import javax.jcr.observation.Event;
024
025import org.slf4j.Logger;
026
027import java.util.Set;
028
029/**
030 * Suppresses events emitted by nodes with a provided set of mixins.
031 *
032 * @author escowles
033 * @author ajs6f
034 * @since 2015-04-15
035 */
036public class SuppressByMixinFilter extends DefaultFilter {
037
038    private static final Logger LOGGER = getLogger(SuppressByMixinFilter.class);
039    private final Set<String> suppressedMixins;
040
041    /**
042     * @param suppressedMixins Resources with these mixins will be filtered out
043     */
044    public SuppressByMixinFilter(final Set<String> suppressedMixins) {
045        this.suppressedMixins = suppressedMixins;
046        LOGGER.info("Suppressing events for nodes with mixins: {}", suppressedMixins);
047    }
048
049    @Override
050    public boolean test(final Event event) {
051        return super.test(event) && !getResourceTypes(event).anyMatch(suppressedMixins::contains);
052    }
053
054}