Source code: org/apache/hivemind/schema/rules/ResourceTranslator.java
1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.hivemind.schema.rules;
16
17 import java.util.Locale;
18
19 import org.apache.hivemind.ApplicationRuntimeException;
20 import org.apache.hivemind.HiveMind;
21 import org.apache.hivemind.Location;
22 import org.apache.hivemind.Resource;
23 import org.apache.hivemind.internal.Module;
24 import org.apache.hivemind.schema.Translator;
25
26 /**
27 * Translator that converts the value to be a resource relative to
28 * the contributing module's deployment descriptor.
29 *
30 * @author Howard Lewis Ship
31 */
32 public class ResourceTranslator implements Translator
33 {
34 /**
35 * Finds the resource. If the inputValue is blank, then returns null.
36 * Interprets the inputValue as a relative path from the contributing module's descriptor.
37 * In addition, a localized resource will be returned if avaiable (localized to
38 * the {@link org.apache.hivemind.Registry#getLocale() registry's locale}.
39 *
40 */
41 public Object translate(
42 Module contributingModule,
43 Class propertyType,
44 String inputValue,
45 Location location)
46 {
47 if (HiveMind.isBlank(inputValue))
48 return null;
49
50 Locale locale = contributingModule.getLocale();
51
52 Resource descriptor = contributingModule.getLocation().getResource();
53
54 Resource baseResource = descriptor.getRelativeResource(inputValue);
55
56 Resource result = baseResource.getLocalization(locale);
57
58 if (result == null)
59 throw new ApplicationRuntimeException(
60 RulesMessages.resourceLocalizationError(inputValue, contributingModule));
61
62 return result;
63 }
64
65 }