/*
* 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;
}
}