下面列出了org.joda.time.DateTimeConstants#MILLIS_PER_WEEK 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* @param instant millis from 1970-01-01T00:00:00Z
* @param year precalculated year of millis
*/
int getWeekOfWeekyear(long instant, int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
// start of generated patch
if(instant<firstWeekMillis1){
return (int)(instant%DateTimeConstants.MILLIS_PER_DAY);
}
// end of generated patch
/* start of original code
if (instant < firstWeekMillis1) {
return getWeeksInYear(year - 1);
}
end of original code*/
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
if (instant >= firstWeekMillis2) {
return 1;
}
return (int) ((instant - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK) + 1;
}
public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) {
if (minuendInstant < subtrahendInstant) {
return -getDifference(subtrahendInstant, minuendInstant);
}
int minuendWeekyear = get(minuendInstant);
int subtrahendWeekyear = get(subtrahendInstant);
long minuendRem = remainder(minuendInstant);
long subtrahendRem = remainder(subtrahendInstant);
// Balance leap weekyear differences on remainders.
if (subtrahendRem >= WEEK_53 && iChronology.getWeeksInYear(minuendWeekyear) <= 52) {
subtrahendRem -= DateTimeConstants.MILLIS_PER_WEEK;
}
int difference = minuendWeekyear - subtrahendWeekyear;
if (minuendRem < subtrahendRem) {
difference--;
}
return difference;
}
public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) {
if (minuendInstant < subtrahendInstant) {
return -getDifference(subtrahendInstant, minuendInstant);
}
int minuendWeekyear = get(minuendInstant);
int subtrahendWeekyear = get(subtrahendInstant);
long minuendRem = remainder(minuendInstant);
long subtrahendRem = remainder(subtrahendInstant);
// Balance leap weekyear differences on remainders.
if (subtrahendRem >= WEEK_53 && iChronology.getWeeksInYear(minuendWeekyear) <= 52) {
subtrahendRem -= DateTimeConstants.MILLIS_PER_WEEK;
}
int difference = minuendWeekyear - subtrahendWeekyear;
if (minuendRem < subtrahendRem) {
difference--;
}
return difference;
}
/**
* @param instant millis from 1970-01-01T00:00:00Z
* @param year precalculated year of millis
*/
int getWeekOfWeekyear(long instant, int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
if (instant < firstWeekMillis1) {
return getWeeksInYear(year - 1);
}
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
if (instant >= firstWeekMillis2) {
return 1;
}
return (int) ((instant - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK) + 1;
}
/**
* @param instant millis from 1970-01-01T00:00:00Z
* @param year precalculated year of millis
*/
int getWeekOfWeekyear(long instant, int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
if (instant < firstWeekMillis1) {
return getWeeksInYear(year - 1);
}
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
if (instant >= firstWeekMillis2) {
return 1;
}
return (int) ((instant - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK) + 1;
}
public long roundFloor(long instant) {
// Note: This works fine, but it ideally shouldn't invoke other
// fields from within a field.
instant = iChronology.weekOfWeekyear().roundFloor(instant);
int wow = iChronology.getWeekOfWeekyear(instant);
if (wow > 1) {
instant -= ((long) DateTimeConstants.MILLIS_PER_WEEK) * (wow - 1);
}
return instant;
}
/**
* @param instant millis from 1970-01-01T00:00:00Z
* @param year precalculated year of millis
*/
int getWeekOfWeekyear(long instant, int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
if (instant < firstWeekMillis1) {
return getWeeksInYear(year - 1);
}
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
if (instant >= firstWeekMillis2) {
return 1;
}
return (int) ((instant - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK) + 1;
}
public long roundFloor(long instant) {
// Note: This works fine, but it ideally shouldn't invoke other
// fields from within a field.
instant = iChronology.weekOfWeekyear().roundFloor(instant);
int wow = iChronology.getWeekOfWeekyear(instant);
if (wow > 1) {
instant -= ((long) DateTimeConstants.MILLIS_PER_WEEK) * (wow - 1);
}
return instant;
}
/**
* @param instant millis from 1970-01-01T00:00:00Z
* @param year precalculated year of millis
*/
int getWeekOfWeekyear(long instant, int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
if (instant < firstWeekMillis1) {
return getWeeksInYear(year - 1);
}
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
if (instant >= firstWeekMillis2) {
return 1;
}
return (int) ((instant - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK) + 1;
}
/**
* Set the Year of a week based year component of the specified time instant.
*
* @see org.joda.time.DateTimeField#set
* @param instant the time instant in millis to update.
* @param year the year (-9999,9999) to set the date to.
* @return the updated DateTime.
* @throws IllegalArgumentException if year is invalid.
*/
public long set(long instant, int year) {
FieldUtils.verifyValueBounds(this, Math.abs(year),
iChronology.getMinYear(), iChronology.getMaxYear());
//
// Do nothing if no real change is requested.
//
int thisWeekyear = get( instant );
if ( thisWeekyear == year ) {
return instant;
}
//
// Calculate the DayOfWeek (to be preserved).
//
int thisDow = iChronology.getDayOfWeek(instant);
//
// Calculate the maximum weeks in the target year.
//
int weeksInFromYear = iChronology.getWeeksInYear( thisWeekyear );
int weeksInToYear = iChronology.getWeeksInYear( year );
int maxOutWeeks = (weeksInToYear < weeksInFromYear) ?
weeksInToYear : weeksInFromYear;
//
// Get the current week of the year. This will be preserved in
// the output unless it is greater than the maximum possible
// for the target weekyear. In that case it is adjusted
// to the maximum possible.
//
int setToWeek = iChronology.getWeekOfWeekyear(instant);
if ( setToWeek > maxOutWeeks ) {
setToWeek = maxOutWeeks;
}
//
// Get a wroking copy of the current date-time.
// This can be a convenience for debugging.
//
long workInstant = instant; // Get a copy
//
// Attempt to get close to the proper weekyear.
// Note - we cannot currently call ourself, so we just call
// set for the year. This at least gets us close.
//
workInstant = iChronology.setYear( workInstant, year );
//
// Calculate the weekyear number for the get close to value
// (which might not be equal to the year just set).
//
int workWoyYear = get( workInstant );
//
// At most we are off by one year, which can be "fixed" by
// adding/subtracting a week.
//
if ( workWoyYear < year ) {
workInstant += DateTimeConstants.MILLIS_PER_WEEK;
} else if ( workWoyYear > year ) {
workInstant -= DateTimeConstants.MILLIS_PER_WEEK;
}
//
// Set the proper week in the current weekyear.
//
// BEGIN: possible set WeekOfWeekyear logic.
int currentWoyWeek = iChronology.getWeekOfWeekyear(workInstant);
// No range check required (we already know it is OK).
workInstant = workInstant + (setToWeek - currentWoyWeek)
* (long)DateTimeConstants.MILLIS_PER_WEEK;
// END: possible set WeekOfWeekyear logic.
//
// Reset DayOfWeek to previous value.
//
// Note: This works fine, but it ideally shouldn't invoke other
// fields from within a field.
workInstant = iChronology.dayOfWeek().set( workInstant, thisDow );
//
// Return result.
//
return workInstant;
}
/**
* Set the Year of a week based year component of the specified time instant.
*
* @see org.joda.time.DateTimeField#set
* @param instant the time instant in millis to update.
* @param year the year (-9999,9999) to set the date to.
* @return the updated DateTime.
* @throws IllegalArgumentException if year is invalid.
*/
public long set(long instant, int year) {
FieldUtils.verifyValueBounds(this, Math.abs(year),
iChronology.getMinYear(), iChronology.getMaxYear());
//
// Do nothing if no real change is requested.
//
int thisWeekyear = get( instant );
if ( thisWeekyear == year ) {
return instant;
}
//
// Calculate the DayOfWeek (to be preserved).
//
int thisDow = iChronology.getDayOfWeek(instant);
//
// Calculate the maximum weeks in the target year.
//
int weeksInFromYear = iChronology.getWeeksInYear( thisWeekyear );
int weeksInToYear = iChronology.getWeeksInYear( year );
int maxOutWeeks = (weeksInToYear < weeksInFromYear) ?
weeksInToYear : weeksInFromYear;
//
// Get the current week of the year. This will be preserved in
// the output unless it is greater than the maximum possible
// for the target weekyear. In that case it is adjusted
// to the maximum possible.
//
int setToWeek = iChronology.getWeekOfWeekyear(instant);
if ( setToWeek > maxOutWeeks ) {
setToWeek = maxOutWeeks;
}
//
// Get a wroking copy of the current date-time.
// This can be a convenience for debugging.
//
long workInstant = instant; // Get a copy
//
// Attempt to get close to the proper weekyear.
// Note - we cannot currently call ourself, so we just call
// set for the year. This at least gets us close.
//
workInstant = iChronology.setYear( workInstant, year );
//
// Calculate the weekyear number for the get close to value
// (which might not be equal to the year just set).
//
int workWoyYear = get( workInstant );
//
// At most we are off by one year, which can be "fixed" by
// adding/subtracting a week.
//
if ( workWoyYear < year ) {
workInstant += DateTimeConstants.MILLIS_PER_WEEK;
} else if ( workWoyYear > year ) {
workInstant -= DateTimeConstants.MILLIS_PER_WEEK;
}
//
// Set the proper week in the current weekyear.
//
// BEGIN: possible set WeekOfWeekyear logic.
int currentWoyWeek = iChronology.getWeekOfWeekyear(workInstant);
// No range check required (we already know it is OK).
workInstant = workInstant + (setToWeek - currentWoyWeek)
* (long)DateTimeConstants.MILLIS_PER_WEEK;
// END: possible set WeekOfWeekyear logic.
//
// Reset DayOfWeek to previous value.
//
// Note: This works fine, but it ideally shouldn't invoke other
// fields from within a field.
workInstant = iChronology.dayOfWeek().set( workInstant, thisDow );
//
// Return result.
//
return workInstant;
}
/**
* Get the number of weeks in the year.
*
* @param year the year to use
* @return number of weeks in the year
*/
int getWeeksInYear(int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
return (int) ((firstWeekMillis2 - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK);
}
/**
* Get the number of weeks in the year.
*
* @param year the year to use
* @return number of weeks in the year
*/
int getWeeksInYear(int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
return (int) ((firstWeekMillis2 - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK);
}
/**
* Get the number of weeks in the year.
*
* @param year the year to use
* @return number of weeks in the year
*/
int getWeeksInYear(int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
return (int) ((firstWeekMillis2 - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK);
}
/**
* Get the number of weeks in the year.
*
* @param year the year to use
* @return number of weeks in the year
*/
int getWeeksInYear(int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
return (int) ((firstWeekMillis2 - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK);
}
/**
* Get the number of weeks in the year.
*
* @param year the year to use
* @return number of weeks in the year
*/
int getWeeksInYear(int year) {
long firstWeekMillis1 = getFirstWeekOfYearMillis(year);
long firstWeekMillis2 = getFirstWeekOfYearMillis(year + 1);
return (int) ((firstWeekMillis2 - firstWeekMillis1) / DateTimeConstants.MILLIS_PER_WEEK);
}