com.facebook.presto.jdbc.internal.joda.time.tz.UTCProvider Maven / Gradle / Ivy
/*
* Copyright 2001-2009 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 com.facebook.presto.jdbc.internal.joda.time.tz;
import java.util.Collections;
import java.util.Set;
import com.facebook.presto.jdbc.internal.joda.time.DateTimeZone;
/**
* Simple time zone provider that supports only UTC.
*
* UTCProvider is thread-safe and immutable.
*
* @author Brian S O'Neill
* @since 1.0
*/
public final class UTCProvider implements Provider {
/**
* The available IDs.
*/
private static final Set AVAILABLE_IDS = Collections.singleton("UTC");
/**
* Constructor.
*/
public UTCProvider() {
super();
}
/**
* Returns {@link DateTimeZone#UTC UTC} for "UTC", null
* otherwise.
*/
public DateTimeZone getZone(String id) {
if ("UTC".equalsIgnoreCase(id)) {
return DateTimeZone.UTC;
}
return null;
}
/**
* Returns a singleton collection containing only "UTC".
*/
public Set getAvailableIDs() {
return AVAILABLE_IDS;
}
}