01 /*
02 * Copyright 2008-2015 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.codehaus.griffon.runtime.core.i18n;
17
18 import griffon.core.resources.NoSuchResourceException;
19 import griffon.util.CompositeResourceBundle;
20 import griffon.util.CompositeResourceBundleBuilder;
21
22 import javax.annotation.Nonnull;
23 import java.util.Locale;
24 import java.util.Map;
25 import java.util.ResourceBundle;
26 import java.util.concurrent.ConcurrentHashMap;
27
28 import static griffon.util.GriffonNameUtils.requireNonBlank;
29 import static java.util.Objects.requireNonNull;
30
31 /**
32 * @author Andres Almiray
33 * @since 2.0.0
34 */
35 public class DefaultMessageSource extends AbstractMessageSource {
36 private final String basename;
37 private final Map<Locale, ResourceBundle> bundles = new ConcurrentHashMap<>();
38 private final CompositeResourceBundleBuilder compositeResourceBundleBuilder;
39
40 public DefaultMessageSource(@Nonnull CompositeResourceBundleBuilder builder, @Nonnull String basename) {
41 this.compositeResourceBundleBuilder = requireNonNull(builder, "Argument 'builder' must not be null");
42 this.basename = requireNonBlank(basename, "Argument 'basename' must not be blank");
43 }
44
45 @Nonnull
46 public String getBasename() {
47 return basename;
48 }
49
50 @Nonnull
51 protected Object doResolveMessageValue(@Nonnull String key, @Nonnull Locale locale) throws NoSuchResourceException {
52 requireNonBlank(key, ERROR_KEY_BLANK);
53 requireNonNull(locale, ERROR_LOCALE_NULL);
54 return getBundle(locale).getObject(key);
55 }
56
57 @Nonnull
58 protected ResourceBundle getBundle(@Nonnull Locale locale) {
59 requireNonNull(locale, ERROR_LOCALE_NULL);
60 ResourceBundle rb = bundles.get(locale);
61 if (null == rb) {
62 rb = compositeResourceBundleBuilder.create(basename, locale);
63 bundles.put(locale, rb);
64 }
65 return rb;
66 }
67
68 @Nonnull
69 @Override
70 public ResourceBundle asResourceBundle() {
71 // force initialization of default bundle
72 if (bundles.isEmpty()) {
73 getBundle(Locale.getDefault());
74 }
75 return new CompositeResourceBundle(bundles.values());
76 }
77 }
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