source: trunk/grails-app/services/DateUtilService.groovy @ 253

Last change on this file since 253 was 214, checked in by gav, 15 years ago

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[210]1import org.codehaus.groovy.runtime.TimeCategory
2// the above will be deprecated and replaced by: groovy.time.TimeCategory
3/// @todo: consider moving this to org.gnumims.DateUtil
4/// pros: easy to use in domain classes.
5/// cons: have to import so pulls in all referenced imports? Injection probably does that anyway.
6
7/**
8* Provides some convenience methods for working with dates.
9*/
[137]10class DateUtilService {
11
12    boolean transactional = false
[180]13    //static scope = "request"
14
[210]15    /**
16    * Get the start of today.
17     * Can be call as dateUtilService.today or dateUtilService.getToday().
18     * @returns A Date object with today's date and all time fields set to 0.
19    */
[180]20    public static Date getToday() {
[210]21        return getMidnight(new Date())
[137]22    }
23
[210]24    /**
25    * Get the start of tomorrow.
26     * Can be call as dateUtilService.tomorrow or dateUtilService.getTomorrow().
27     * @returns A Date object with tomorrow's date and all time fields set to 0.
28    */
[137]29    public static Date getTomorrow() {
30        return (getToday() + 1) as Date
31    }
32
[210]33    /**
34    * Get the start of yesterday.
35     * Can be call as dateUtilService.yesterday or dateUtilService.getYesterday().
36     * @returns A Date object with yesterday's date and all time fields set to 0.
37    */
38    public static Date getYesterday() {
39        return (getToday() - 1) as Date
40    }
41
42    /**
43    * Get the start of the day one week ago.
44     * Can be call as dateUtilService.oneWeekAgo or dateUtilService.getOneWeekAgo().
45     * @returns A Date object with the date one week ago and all time fields set to 0.
46    */
47    public static Date getOneWeekAgo() {
48        return (getToday() - 7) as Date
49    }
50
51    /**
52    * Get the start of the day one week ago.
53     * Can be call as dateUtilService.oneWeekAgo or dateUtilService.getOneWeekAgo().
54     * @returns A Date object with the date one week ago and all time fields set to 0.
55    */
56    public static Date getOneWeekFromNow() {
57        return (getToday() + 7) as Date
58    }
59
60    /**
61    * Get the start of a given date by setting all time fields to 0.
62    * The Calendar.getInstance() or Calendar.instance factory returns a new calendar instance, usually
63    * a Gregorian calendar but using Calendar we don't have to worry about those details.
64    * The time fields are then set to zero and cal.getTime() or cal.time returns a java.util.Date object.
65    * @param date The Date object to start with.
66    * @returns A Date object having the given date and all time fields set to 0, so the very start of the given day.
67    */
68    public static Date getMidnight(Date date) {
69        Calendar cal = Calendar.instance
70        cal.setTime(date)
[137]71        cal.set(Calendar.HOUR_OF_DAY, 0)
72        cal.set(Calendar.MINUTE, 0)
73        cal.set(Calendar.SECOND, 0)
74        cal.set(Calendar.MILLISECOND, 0)
[210]75        cal.time
[137]76    }
77
[214]78    /**
79    * Make a date object from supplied year, month, day values.
80    * The Calendar.getInstance() or Calendar.instance factory returns a new calendar instance, usually
81    * a Gregorian calendar but using Calendar we don't have to worry about those details.
82    * The time fields are set to zero and cal.getTime() or cal.time returns a java.util.Date object.
83    * @param year The year as a string or integer.
84    * @param month The month as a string or integer.
85    * @param day The day as a string or integer.
86    * @returns A Date object having the given date and all time fields set to 0, so the very start of the given day.
87    */
88    public static Date makeDate(year, month, day) {
89        Calendar cal = Calendar.instance
90        cal.clear()
91        // Stupid month is 0-based, grumble.
92        cal.set(year.toInteger(), month.toInteger()-1, day.toInteger())
93        cal.time
94    }
95
[137]96}
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