01: /*
02: * Copyright 2001-2005 Stephen Colebourne
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.joda.time.tz;
17:
18: import java.util.Set;
19: import org.joda.time.DateTimeZone;
20:
21: /**
22: * Service provider factory for time zones.
23: *
24: * @author Brian S O'Neill
25: * @since 1.0
26: */
27: public interface Provider {
28: /**
29: * Retrieves a DateTimeZone for the given id. All providers must at
30: * least support id "UTC".
31: *
32: * @return null if not found
33: */
34: DateTimeZone getZone(String id);
35:
36: /**
37: * Returns an unmodifiable set of ids. All providers must at least
38: * support id "UTC".
39: */
40: Set getAvailableIDs();
41: }
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