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Groovy example source code file (BaseDuration.java)

This example Groovy source code file (BaseDuration.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

arraylist, baseduration, baseduration, calendar, date, date, from, from, list, string, string, util

The Groovy BaseDuration.java source code

/*
 * Copyright 2003-2010 the original author or authors.
 *
 * 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 groovy.time;

import org.codehaus.groovy.runtime.DefaultGroovyMethods;

import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.ArrayList;

/**
 * Base class for date and time durations.
 * @see Duration
 * @author John Wilson tug@wilson.co.uk
 */
public abstract class BaseDuration {
    protected final int years;
    protected final int months;    
    protected final int days;
    protected final int hours;
    protected final int minutes;
    protected final int seconds;    
    protected final int millis;

    protected BaseDuration(final int years, final int months, final int days, final int hours, final int minutes, final int seconds, final int millis) {
        this.years = years;
        this.months = months;
        this.days = days;
        this.hours = hours;
        this.minutes = minutes;
        this.seconds = seconds;
        this.millis = millis;
    }

    protected BaseDuration(final int days, final int hours, final int minutes, final int seconds, final int millis) {
        this(0, 0, days, hours, minutes, seconds, millis);
    }
    
    public int getYears() {
        return this.years;
    }
    
    public int getMonths() {
        return this.months;
    }
    
    public int getDays() {
        return this.days;
    }
    
    public int getHours() {
        return this.hours;
    }
    
    public int getMinutes() {
        return this.minutes;
    }
    
    public int getSeconds() {
        return this.seconds;
    }
    
    public int getMillis() {
        return this.millis;
    }
    
    public Date plus(final Date date) {
    final Calendar cal = Calendar.getInstance();
    
        cal.setTime(date);
        cal.add(Calendar.YEAR, this.years);
        cal.add(Calendar.MONTH, this.months);
        cal.add(Calendar.DAY_OF_YEAR, this.days);
        cal.add(Calendar.HOUR_OF_DAY, this.hours);
        cal.add(Calendar.MINUTE, this.minutes);
        cal.add(Calendar.SECOND, this.seconds);
        cal.add(Calendar.MILLISECOND, this.millis);
        
        return cal.getTime();
    }

    public String toString() {
        List buffer = new ArrayList();

        if (this.years      != 0) buffer.add(this.years   + " years");
        if (this.months     != 0) buffer.add(this.months  + " months");
        if (this.days       != 0) buffer.add(this.days    + " days");
        if (this.hours      != 0) buffer.add(this.hours   + " hours");
        if (this.minutes    != 0) buffer.add(this.minutes + " minutes");

        if (this.seconds != 0 || this.millis != 0)
            buffer.add((seconds == 0 ? (millis < 0 ? "-0" : "0") : seconds) + "." + DefaultGroovyMethods.padLeft("" + Math.abs(millis), 3, "0")  + " seconds");

        if (buffer.size()!=0) {
            return DefaultGroovyMethods.join(buffer, ", ");
        } else {
            return "0";
        }
    }

    public abstract long toMilliseconds();
    
    public abstract Date getAgo();
    
    public abstract From getFrom();

    public abstract static class From {
        public abstract Date getNow();
        
        public Date getToday() {
            return getNow();
        }
    }
}

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