Date compare util for GWT : Utility « GWT « Java
Date compare util for GWT
/**
* Copyright 2005-2009 Noelios Technologies.
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL 1.0 (the
* "Licenses"). You can select the license that you prefer but you may not use
* this file except in compliance with one of these Licenses.
*
* You can obtain a copy of the LGPL 3.0 license at
* http://www.opensource.org/licenses/lgpl-3.0.html
*
* You can obtain a copy of the LGPL 2.1 license at
* http://www.opensource.org/licenses/lgpl-2.1.php
*
* You can obtain a copy of the CDDL 1.0 license at
* http://www.opensource.org/licenses/cddl1.php
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://www.noelios.com/products/restlet-engine
*
* Restlet is a registered trademark of Noelios Technologies.
*/
//package wogwt.translatable.utils;
import java.util.Arrays;
import java.util.Collections;
import java.util.Date;
import java.util.List;
/**
* WOGWT: copied from gwt-restlet to be used to parse and format
* JSON dates in the format(s) required by ERRouteRequestHandler.
*
* Date manipulation utilities.
*
* @author Jerome Louvel
*/
public final class DateUtils {
/** Obsoleted HTTP date format (ANSI C asctime() format). */
public static final List<String> FORMAT_ASC_TIME = unmodifiableList("EEE MMM dd HH:mm:ss yyyy");
/** Obsoleted HTTP date format (RFC 1036). */
public static final List<String> FORMAT_RFC_1036 = unmodifiableList("EEEE, dd-MMM-yy HH:mm:ss zzz");
/** Preferred HTTP date format (RFC 1123). */
public static final List<String> FORMAT_RFC_1123 = unmodifiableList("EEE, dd MMM yyyy HH:mm:ss zzz");
/** W3C date format (RFC 3339). */
public static final List<String> FORMAT_RFC_3339 = unmodifiableList("yyyy-MM-dd'T'HH:mm:ssz");
/** Common date format (RFC 822). */
public static final List<String> FORMAT_RFC_822 = unmodifiableList(
"EEE, dd MMM yy HH:mm:ss z", "EEE, dd MMM yy HH:mm z",
"dd MMM yy HH:mm:ss z", "dd MMM yy HH:mm z");
/**
* Compares two date with a precision of one second.
*
* @param baseDate
* The base date
* @param afterDate
* The date supposed to be after.
* @return True if the afterDate is indeed after the baseDate.
*/
public static boolean after(final Date baseDate, final Date afterDate) {
if ((baseDate == null) || (afterDate == null)) {
throw new IllegalArgumentException(
"Can't compare the dates, at least one of them is null");
}
final long baseTime = baseDate.getTime() / 1000;
final long afterTime = afterDate.getTime() / 1000;
return baseTime < afterTime;
}
/**
* Compares two date with a precision of one second.
*
* @param baseDate
* The base date
* @param beforeDate
* The date supposed to be before.
* @return True if the beforeDate is indeed before the baseDate.
*/
public static boolean before(final Date baseDate, final Date beforeDate) {
if ((baseDate == null) || (beforeDate == null)) {
throw new IllegalArgumentException(
"Can't compare the dates, at least one of them is null");
}
final long baseTime = baseDate.getTime() / 1000;
final long beforeTime = beforeDate.getTime() / 1000;
return beforeTime < baseTime;
}
/**
* Compares two date with a precision of one second.
*
* @param baseDate
* The base date
* @param otherDate
* The other date supposed to be equals.
* @return True if both dates are equals.
*/
public static boolean equals(final Date baseDate, final Date otherDate) {
if ((baseDate == null) || (otherDate == null)) {
throw new IllegalArgumentException(
"Can't compare the dates, at least one of them is null");
}
final long baseTime = baseDate.getTime() / 1000;
final long otherTime = otherDate.getTime() / 1000;
return otherTime == baseTime;
}
/**
* Helper method to help initialize this class by providing unmodifiable
* lists based on arrays.
*
* @param <T>
* Any valid java object
* @param array
* to be convereted into an unmodifiable list
* @return unmodifiable list based on the provided array
*/
private static <T> List<T> unmodifiableList(final T... array) {
return Collections.unmodifiableList(Arrays.asList(array));
}
public static native int timeZoneOffset() /*-{
return new Date().getTimezoneOffset();
}-*/;
}
