1 /*
2 * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
50 *
51 * @since 9
52 */
53
54 class TzdbZoneRulesProvider {
55
56 /**
57 * Creates an instance.
58 *
59 * @throws ZoneRulesException if unable to load
60 */
61 public TzdbZoneRulesProvider(List<Path> files) {
62 try {
63 load(files);
64 } catch (Exception ex) {
65 throw new ZoneRulesException("Unable to load TZDB time-zone rules", ex);
66 }
67 }
68
69 public Set<String> getZoneIds() {
70 return new TreeSet(regionIds);
71 }
72
73 public Map<String, String> getAliasMap() {
74 return links;
75 }
76
77 public ZoneRules getZoneRules(String zoneId) {
78 Object obj = zones.get(zoneId);
79 if (obj == null) {
80 String zoneId0 = zoneId;
81 if (links.containsKey(zoneId)) {
82 zoneId = links.get(zoneId);
83 obj = zones.get(zoneId);
84 }
85 if (obj == null) {
86 // Timezone link can be located in 'backward' file and it
87 // can refer to another link, so we need to check for
88 // link one more time, before throwing an exception
89 String zoneIdBack = zoneId;
90 if (links.containsKey(zoneId)) {
91 zoneId = links.get(zoneId);
92 obj = zones.get(zoneId);
93 }
94 if (obj == null) {
95 throw new ZoneRulesException("Unknown time-zone ID: " + zoneIdBack);
96 }
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1 /*
2 * Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
50 *
51 * @since 9
52 */
53
54 class TzdbZoneRulesProvider {
55
56 /**
57 * Creates an instance.
58 *
59 * @throws ZoneRulesException if unable to load
60 */
61 public TzdbZoneRulesProvider(List<Path> files) {
62 try {
63 load(files);
64 } catch (Exception ex) {
65 throw new ZoneRulesException("Unable to load TZDB time-zone rules", ex);
66 }
67 }
68
69 public Set<String> getZoneIds() {
70 return new TreeSet<String>(regionIds);
71 }
72
73 public Map<String, String> getAliasMap() {
74 return links;
75 }
76
77 @SuppressWarnings("unchecked")
78 public ZoneRules getZoneRules(String zoneId) {
79 Object obj = zones.get(zoneId);
80 if (obj == null) {
81 String zoneId0 = zoneId;
82 if (links.containsKey(zoneId)) {
83 zoneId = links.get(zoneId);
84 obj = zones.get(zoneId);
85 }
86 if (obj == null) {
87 // Timezone link can be located in 'backward' file and it
88 // can refer to another link, so we need to check for
89 // link one more time, before throwing an exception
90 String zoneIdBack = zoneId;
91 if (links.containsKey(zoneId)) {
92 zoneId = links.get(zoneId);
93 obj = zones.get(zoneId);
94 }
95 if (obj == null) {
96 throw new ZoneRulesException("Unknown time-zone ID: " + zoneIdBack);
97 }
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