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.i18n;
19
20 import griffon.core.resources.NoSuchResourceException;
21 import griffon.util.CompositeResourceBundle;
22 import griffon.util.CompositeResourceBundleBuilder;
23
24 import javax.annotation.Nonnull;
25 import java.util.Locale;
26 import java.util.Map;
27 import java.util.ResourceBundle;
28 import java.util.concurrent.ConcurrentHashMap;
29
30 import static griffon.util.GriffonNameUtils.requireNonBlank;
31 import static java.util.Objects.requireNonNull;
32
33 /**
34 * @author Andres Almiray
35 * @since 2.0.0
36 */
37 public class DefaultMessageSource extends AbstractMessageSource {
38 private final String basename;
39 private final Map<Locale, ResourceBundle> bundles = new ConcurrentHashMap<>();
40 private final CompositeResourceBundleBuilder compositeResourceBundleBuilder;
41
42 public DefaultMessageSource(@Nonnull CompositeResourceBundleBuilder builder, @Nonnull String basename) {
43 this.compositeResourceBundleBuilder = requireNonNull(builder, "Argument 'builder' must not be null");
44 this.basename = requireNonBlank(basename, "Argument 'basename' must not be blank");
45 }
46
47 @Nonnull
48 public String getBasename() {
49 return basename;
50 }
51
52 @Nonnull
53 protected Object doResolveMessageValue(@Nonnull String key, @Nonnull Locale locale) throws NoSuchResourceException {
54 requireNonBlank(key, ERROR_KEY_BLANK);
55 requireNonNull(locale, ERROR_LOCALE_NULL);
56 return getBundle(locale).getObject(key);
57 }
58
59 @Nonnull
60 protected ResourceBundle getBundle(@Nonnull Locale locale) {
61 requireNonNull(locale, ERROR_LOCALE_NULL);
62 ResourceBundle rb = bundles.get(locale);
63 if (null == rb) {
64 rb = compositeResourceBundleBuilder.create(basename, locale);
65 bundles.put(locale, rb);
66 }
67 return rb;
68 }
69
70 @Nonnull
71 @Override
72 public ResourceBundle asResourceBundle() {
73 // force initialization of default bundle
74 if (bundles.isEmpty()) {
75 getBundle(Locale.getDefault());
76 }
77 return new CompositeResourceBundle(bundles.values());
78 }
79 }
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