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 */ 016package org.fcrepo.kernel.modeshape.observer; 017 018import static org.slf4j.LoggerFactory.getLogger; 019 020import javax.jcr.PathNotFoundException; 021import javax.jcr.RepositoryException; 022import javax.jcr.observation.Event; 023 024import org.fcrepo.kernel.api.exception.RepositoryRuntimeException; 025 026import org.slf4j.Logger; 027 028import java.util.Set; 029 030/** 031 * Suppresses events emitted by nodes with a provided set of mixins. 032 * 033 * @author escowles 034 * @author ajs6f 035 * @since 2015-04-15 036 */ 037public class SuppressByMixinFilter extends DefaultFilter { 038 039 private static final Logger LOGGER = getLogger(SuppressByMixinFilter.class); 040 private final Set<String> suppressedMixins; 041 042 /** 043 * @param suppressedMixins Resources with these mixins will be filtered out 044 */ 045 public SuppressByMixinFilter(final Set<String> suppressedMixins) { 046 this.suppressedMixins = suppressedMixins; 047 LOGGER.info("Suppressing events for nodes with mixins: {}", suppressedMixins); 048 } 049 050 @Override 051 public boolean test(final Event event) { 052 try { 053 return super.test(event) && !getMixinTypes(event).anyMatch(suppressedMixins::contains); 054 } catch (final PathNotFoundException e) { 055 LOGGER.trace("Dropping event from outside our assigned workspace:\n", e); 056 return false; 057 } catch (final RepositoryException e) { 058 throw new RepositoryRuntimeException(e); 059 } 060 } 061 062}