/* * Copyright 2001-2005 Stephen Colebourne * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.joda.time.tz; import org.joda.time.DateTimeZone; /** * Basic DateTimeZone implementation that has a fixed name key and offsets. * <p> * FixedDateTimeZone is thread-safe and immutable. * * @author Brian S O'Neill * @since 1.0 */ public final class FixedDateTimeZone extends DateTimeZone { private static final long serialVersionUID = -3513011772763289092L; private final String iNameKey; private final int iWallOffset; private final int iStandardOffset; public FixedDateTimeZone(String id, String nameKey, int wallOffset, int standardOffset) { super(id); iNameKey = nameKey; iWallOffset = wallOffset; iStandardOffset = standardOffset; } public String getNameKey(long instant) { return iNameKey; } public int getOffset(long instant) { return iWallOffset; } public int getStandardOffset(long instant) { return iStandardOffset; } public int getOffsetFromLocal(long instantLocal) { return iWallOffset; } public boolean isFixed() { return true; } public long nextTransition(long instant) { return instant; } public long previousTransition(long instant) { return instant; } /** * Override to return the correct timezone instance. * @since 1.5 */ public java.util.TimeZone toTimeZone() { String id = getID(); if (id.length() == 6 && (id.startsWith("+") || id.startsWith("-"))) { // standard format offset [+-]hh:mm // our ID is without any prefix, so we need to add the GMT back return java.util.TimeZone.getTimeZone("GMT" + getID()); } // unusual offset, so setup a SimpleTimeZone as best we can return new java.util.SimpleTimeZone(iWallOffset, getID()); } public boolean equals(Object obj) { if (this == obj) { return true; } if (obj instanceof FixedDateTimeZone) { FixedDateTimeZone other = (FixedDateTimeZone) obj; return getID().equals(other.getID()) && iStandardOffset == other.iStandardOffset && iWallOffset == other.iWallOffset; } return false; } public int hashCode() { return getID().hashCode() + 37 * iStandardOffset + 31 * iWallOffset; } }