001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.bam;
018    
019    import java.util.concurrent.TimeUnit;
020    import java.util.Date;
021    
022    /**
023     * A fluent builder of times
024     *
025     * @version $Revision: $
026     */
027    public class TimeBuilder {
028        private long number;
029        private TimeUnit timeUnit = TimeUnit.MILLISECONDS;
030        private boolean configuredTime;
031    
032        /**
033         * Creates a time which by default is in milliseconds unless
034         * specified using a time based builder method
035         */
036        public static TimeBuilder time(long number) {
037            return new TimeBuilder(number);
038        }
039    
040        public TimeBuilder(long number) {
041            this.number = number;
042        }
043    
044        public long toMillis() {
045            return timeUnit.toMillis(number);
046        }
047        
048        public Date toDate() {
049            return new Date(toMillis());
050        }
051    
052        public TimeBuilder millis() {
053            setTimeUnit(TimeUnit.MILLISECONDS);
054            return this;
055        }
056    
057        public TimeBuilder nanos() {
058            setTimeUnit(TimeUnit.NANOSECONDS);
059            return this;
060        }
061    
062        public TimeBuilder micros() {
063            setTimeUnit(TimeUnit.MICROSECONDS);
064            return this;
065        }
066    
067        public TimeBuilder seconds() {
068            setTimeUnit(TimeUnit.SECONDS);
069            return this;
070        }
071    
072        public TimeBuilder minutes() {
073            setTimeUnit(TimeUnit.SECONDS);
074            number = minutesAsSeconds(number);
075            return this;
076        }
077    
078        public TimeBuilder hours() {
079            setTimeUnit(TimeUnit.SECONDS);
080            number = hoursAsSeconds(number);
081            return this;
082        }
083    
084        public TimeBuilder days() {
085            setTimeUnit(TimeUnit.SECONDS);
086            number = daysAsSeconds(number);
087            return this;
088        }
089    
090        public long getNumber() {
091            return number;
092        }
093    
094        public TimeUnit getTimeUnit() {
095            return timeUnit;
096        }
097    
098        public void setTimeUnit(TimeUnit timeUnit) {
099            if (configuredTime) {
100                throw new IllegalArgumentException("Cannot configure the time unit twice!");
101            }
102            else {
103               configuredTime = true;
104            }
105            this.timeUnit = timeUnit;
106        }
107    
108        protected long minutesAsSeconds(long value) {
109            return value * 60;
110        }
111    
112        protected long hoursAsSeconds(long value) {
113            return minutesAsSeconds(value) * 60;
114        }
115    
116        protected long daysAsSeconds(long value) {
117            return hoursAsSeconds(value) * 24;
118        }
119    
120    }