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.impl.services.functions;
017
018import static com.google.common.base.Preconditions.checkArgument;
019import static com.google.common.base.Throwables.propagate;
020
021import javax.jcr.Property;
022import javax.jcr.RepositoryException;
023
024import org.modeshape.jcr.value.BinaryKey;
025import org.modeshape.jcr.value.BinaryValue;
026
027import com.google.common.base.Function;
028
029/**
030 * Get the internal Modeshape BinaryKey for a binary property
031 *
032 * @author awoods
033 */
034public class GetBinaryKey implements Function<Property, BinaryKey> {
035
036    @Override
037    public BinaryKey apply(final Property input) {
038        checkArgument(input != null, "null cannot have a Binarykey!");
039        try {
040            return ((BinaryValue) input.getBinary()).getKey();
041        } catch (final RepositoryException e) {
042            throw propagate(e);
043        }
044    }
045
046}