| 1 | /* |
| 2 | * Copyright 2001-2005 Stephen Colebourne |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 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 org.joda.time.DateTimeZone; |
| 19 | |
| 20 | /** |
| 21 | * Basic DateTimeZone implementation that has a fixed name key and offsets. |
| 22 | * <p> |
| 23 | * FixedDateTimeZone is thread-safe and immutable. |
| 24 | * |
| 25 | * @author Brian S O'Neill |
| 26 | * @since 1.0 |
| 27 | */ |
| 28 | public final class FixedDateTimeZone extends DateTimeZone { |
| 29 | |
| 30 | private static final long serialVersionUID = -3513011772763289092L; |
| 31 | |
| 32 | private final String iNameKey; |
| 33 | private final int iWallOffset; |
| 34 | private final int iStandardOffset; |
| 35 | |
| 36 | public FixedDateTimeZone(String id, String nameKey, |
| 37 | int wallOffset, int standardOffset) { |
| 38 | super(id); |
| 39 | iNameKey = nameKey; |
| 40 | iWallOffset = wallOffset; |
| 41 | iStandardOffset = standardOffset; |
| 42 | } |
| 43 | |
| 44 | public String getNameKey(long instant) { |
| 45 | return iNameKey; |
| 46 | } |
| 47 | |
| 48 | public int getOffset(long instant) { |
| 49 | return iWallOffset; |
| 50 | } |
| 51 | |
| 52 | public int getStandardOffset(long instant) { |
| 53 | return iStandardOffset; |
| 54 | } |
| 55 | |
| 56 | public int getOffsetFromLocal(long instantLocal) { |
| 57 | return iWallOffset; |
| 58 | } |
| 59 | |
| 60 | public boolean isFixed() { |
| 61 | return true; |
| 62 | } |
| 63 | |
| 64 | public long nextTransition(long instant) { |
| 65 | return instant; |
| 66 | } |
| 67 | |
| 68 | public long previousTransition(long instant) { |
| 69 | return instant; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Override to return the correct timzone instance. |
| 74 | * @since 1.5 |
| 75 | */ |
| 76 | public java.util.TimeZone toTimeZone() { |
| 77 | String id = getID(); |
| 78 | if (id.length() == 6 && (id.startsWith("+") || id.startsWith("-"))) { |
| 79 | // standard format offset [+-]hh:mm |
| 80 | // our ID is without any prefix, so we need to add the GMT back |
| 81 | return java.util.TimeZone.getTimeZone("GMT" + getID()); |
| 82 | } |
| 83 | // unusual offset, so setup a SimpleTimeZone as best we can |
| 84 | return new java.util.SimpleTimeZone(iWallOffset, getID()); |
| 85 | } |
| 86 | |
| 87 | public boolean equals(Object obj) { |
| 88 | if (this == obj) { |
| 89 | return true; |
| 90 | } |
| 91 | if (obj instanceof FixedDateTimeZone) { |
| 92 | FixedDateTimeZone other = (FixedDateTimeZone)obj; |
| 93 | return |
| 94 | getID().equals(other.getID()) && |
| 95 | iStandardOffset == other.iStandardOffset && |
| 96 | iWallOffset == other.iWallOffset; |
| 97 | } |
| 98 | return false; |
| 99 | } |
| 100 | |
| 101 | public int hashCode() { |
| 102 | return getID().hashCode() + 37 * iStandardOffset + 31 * iWallOffset; |
| 103 | } |
| 104 | |
| 105 | } |