Revision: 4561
http://sourceforge.net/p/vexi/code/4561
Author: mkpg2
Date: 2013-10-10 03:20:24 +0000 (Thu, 10 Oct 2013)
Log Message:
-----------
Date. Support diff for days.
Modified Paths:
--------------
branches/vexi3/org.vexi-library.value/src/main/java/org/vexi/value/Date.java
Modified:
branches/vexi3/org.vexi-library.value/src/main/java/org/vexi/value/Date.java
===================================================================
---
branches/vexi3/org.vexi-library.value/src/main/java/org/vexi/value/Date.java
2013-10-02 21:47:04 UTC (rev 4560)
+++
branches/vexi3/org.vexi-library.value/src/main/java/org/vexi/value/Date.java
2013-10-10 03:20:24 UTC (rev 4561)
@@ -402,7 +402,10 @@
case PART_QUARTER:
int quarters = getPart(PART_QUARTER) - from.getPart(PART_QUARTER);
return years*4 +quarters;
-
+ case PART_DAY:
+ Calendar c1 = asCalendar();
+ Calendar c2 = from.asCalendar();
+ return (int)daysBetween(c1, c2);
}
throw new Error("Unsupported dateDiff: "+partName(part));
}
@@ -432,4 +435,33 @@
public String toString() {
return format();
}
+
+
+
+
+
+
+
+ static public long daysBetween(final Calendar startDate, final Calendar
endDate) {
+ if(startDate.after(endDate)){
+ return -daysBetween(endDate, startDate);
+ }
+
+ int MILLIS_IN_DAY = 1000 * 60 * 60 * 24;
+ long endInstant = endDate.getTimeInMillis();
+ int presumedDays =
+ (int) ((endInstant - startDate.getTimeInMillis()) /
MILLIS_IN_DAY);
+ Calendar cursor = (Calendar) startDate.clone();
+ cursor.add(Calendar.DAY_OF_YEAR, presumedDays);
+ long instant = cursor.getTimeInMillis();
+ if (instant == endInstant)
+ return presumedDays;
+
+ final int step = instant < endInstant ? 1 : -1;
+ do {
+ cursor.add(Calendar.DAY_OF_MONTH, step);
+ presumedDays += step;
+ } while (cursor.getTimeInMillis() <= endInstant);
+ return presumedDays;
+ }
}
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