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| 1 | +/* |
| 2 | + * #%L |
| 3 | + * SciJava Common shared library for SciJava software. |
| 4 | + * %% |
| 5 | + * Copyright (C) 2015 Board of Regents of the University of |
| 6 | + * Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck |
| 7 | + * Institute of Molecular Cell Biology and Genetics. |
| 8 | + * %% |
| 9 | + * Redistribution and use in source and binary forms, with or without |
| 10 | + * modification, are permitted provided that the following conditions are met: |
| 11 | + * |
| 12 | + * 1. Redistributions of source code must retain the above copyright notice, |
| 13 | + * this list of conditions and the following disclaimer. |
| 14 | + * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 15 | + * this list of conditions and the following disclaimer in the documentation |
| 16 | + * and/or other materials provided with the distribution. |
| 17 | + * |
| 18 | + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE |
| 22 | + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | + * POSSIBILITY OF SUCH DAMAGE. |
| 29 | + * #L% |
| 30 | + */ |
| 31 | + |
| 32 | +package org.scijava.cache; |
| 33 | + |
| 34 | +import java.util.concurrent.Callable; |
| 35 | +import java.util.concurrent.ExecutionException; |
| 36 | + |
| 37 | +import org.scijava.plugin.Plugin; |
| 38 | +import org.scijava.service.AbstractService; |
| 39 | +import org.scijava.service.Service; |
| 40 | + |
| 41 | +import com.google.common.cache.Cache; |
| 42 | +import com.google.common.cache.CacheBuilder; |
| 43 | + |
| 44 | +/** |
| 45 | + * {@link CacheService} implementation wrapping a guava {@link Cache}. |
| 46 | + * |
| 47 | + * @author Mark Hiner <hinerm@gmail.com> |
| 48 | + */ |
| 49 | +@Plugin(type = Service.class) |
| 50 | +public class GuavaCacheService extends AbstractService implements CacheService { |
| 51 | + |
| 52 | + private Cache<Object, Object> cache; |
| 53 | + |
| 54 | + @Override |
| 55 | + public void initialize() { |
| 56 | + cache = CacheBuilder.newBuilder().build(); |
| 57 | + } |
| 58 | + |
| 59 | + @Override |
| 60 | + public void put(final Object key, final Object value) { |
| 61 | + cache.put(key, value); |
| 62 | + } |
| 63 | + |
| 64 | + @Override |
| 65 | + public Object get(final Object key) { |
| 66 | + return cache.getIfPresent(key); |
| 67 | + } |
| 68 | + |
| 69 | + @SuppressWarnings("unchecked") |
| 70 | + @Override |
| 71 | + public <V> V get(final Object key, final Callable<V> valueLoader) |
| 72 | + throws ExecutionException |
| 73 | + { |
| 74 | + return (V) cache.get(key, valueLoader); |
| 75 | + } |
| 76 | +} |
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