01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.codehaus.griffon.runtime.core.resources;
19
20 import griffon.core.resources.NoSuchResourceException;
21 import griffon.util.CompositeResourceBundleBuilder;
22
23 import javax.annotation.Nonnull;
24 import java.util.Locale;
25 import java.util.Map;
26 import java.util.ResourceBundle;
27 import java.util.concurrent.ConcurrentHashMap;
28
29 import static griffon.util.GriffonNameUtils.requireNonBlank;
30 import static java.util.Objects.requireNonNull;
31
32 /**
33 * @author Andres Almiray
34 * @since 2.0.0
35 */
36 public class DefaultResourceResolver extends AbstractResourceResolver {
37 private final String basename;
38 private final Map<Locale, ResourceBundle> bundles = new ConcurrentHashMap<>();
39 private final CompositeResourceBundleBuilder compositeResourceBundleBuilder;
40
41 public DefaultResourceResolver(@Nonnull CompositeResourceBundleBuilder builder, @Nonnull String basename) {
42 this.compositeResourceBundleBuilder = requireNonNull(builder, "Argument 'builder' must not be null");
43 this.basename = requireNonBlank(basename, "Argument 'basename' must not be blank");
44 }
45
46 @Nonnull
47 public String getBasename() {
48 return basename;
49 }
50
51 @Nonnull
52 protected Object doResolveResourceValue(@Nonnull String key, @Nonnull Locale locale) throws NoSuchResourceException {
53 requireNonBlank(key, ERROR_KEY_BLANK);
54 requireNonNull(locale, ERROR_LOCALE_NULL);
55 return getBundle(locale).getObject(key);
56 }
57
58 @Nonnull
59 protected ResourceBundle getBundle(@Nonnull Locale locale) {
60 requireNonNull(locale, ERROR_LOCALE_NULL);
61 ResourceBundle rb = bundles.get(locale);
62 if (null == rb) {
63 rb = compositeResourceBundleBuilder.create(basename, locale);
64 bundles.put(locale, rb);
65 }
66 return rb;
67 }
68 }
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