1 /*
2 * Licensed under the Apache License, Version 2.0 (the "License");
3 * you may not use this file except in compliance with the License.
4 * You may obtain a copy of the License at
5 *
6 * http://www.apache.org/licenses/LICENSE-2.0
7 *
8 * Unless required by applicable law or agreed to in writing, software
9 * distributed under the License is distributed on an "AS IS" BASIS,
10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 * See the License for the specific language governing permissions and
12 * limitations under the License.
13 */
14 package org.jdbi.v3.cache.guava;
15
16 import com.google.common.cache.CacheBuilder;
17 import org.jdbi.v3.core.cache.JdbiCache;
18 import org.jdbi.v3.core.cache.JdbiCacheBuilder;
19 import org.jdbi.v3.core.cache.JdbiCacheLoader;
20
21 /**
22 * Cache builder using the guava {@link com.google.common.cache.Cache} object.
23 */
24 public final class GuavaCacheBuilder implements JdbiCacheBuilder {
25
26 private final CacheBuilder<Object, Object> cacheBuilder;
27
28 /**
29 * Returns a new {@link JdbiCacheBuilder} which can be used to construct the internal caches.
30 *
31 * @return A {@link JdbiCacheBuilder} instance.
32 */
33 public static JdbiCacheBuilder instance() {
34 return new GuavaCacheBuilder();
35 }
36
37 /**
38 * Wraps an existing {@link CacheBuilder} for use with Jdbi.
39 *
40 * @param cacheBuilder A {@link CacheBuilder} instance.
41 */
42 public GuavaCacheBuilder(CacheBuilder<Object, Object> cacheBuilder) {
43 this.cacheBuilder = cacheBuilder;
44 }
45
46 GuavaCacheBuilder() {
47 this.cacheBuilder = CacheBuilder.newBuilder().recordStats();
48 }
49
50 @Override
51 public <K, V> JdbiCache<K, V> build() {
52 return new GuavaCache<>(cacheBuilder);
53 }
54
55 @Override
56 public <K, V> JdbiCache<K, V> buildWithLoader(JdbiCacheLoader<K, V> cacheLoader) {
57 return new GuavaLoadingCache<>(cacheBuilder, cacheLoader);
58 }
59
60 @Override
61 public JdbiCacheBuilder maxSize(int maxSize) {
62 cacheBuilder.maximumSize(maxSize);
63 return this;
64 }
65 }