/*******************************************************************************
* Copyright (c) 2004, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.xml.core.tests.util;
import java.util.Calendar;
import java.util.Date;
import com.ibm.icu.text.DateFormat;
import com.ibm.icu.text.SimpleDateFormat;
/**
* @author davidw
*
* This class provides one timestamp per VM run.
* (Technically, per class loading.)
*/
public class TimestampUtil {
private static Date timestamp = null;
private static DateFormat shortFormat = new SimpleDateFormat("yyyy'-'MM'-'dd");
// private static DateFormat longFormat = new SimpleDateFormat("yyyy'-'MM'-'dd'-'kk'-'mm'-'ss");
private static String nowShort = null;
public static String timestamp() {
if (TimestampUtil.nowShort == null) {
TimestampUtil.nowShort = shortFormat.format(ensureTimestamp());
}
return TimestampUtil.nowShort;
}
protected static Date ensureTimestamp() {
// just calculate 'timestamp' once per class loading,
// so this 'timestamp' remains the same during
// entire run.
if (TimestampUtil.timestamp == null) {
Calendar calendar = Calendar.getInstance();
TimestampUtil.timestamp = calendar.getTime();
}
return TimestampUtil.timestamp;
}
}