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Add ability to expand TimeOfYear into instances

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Utilizing this function in the recurring billing event [], in order to abstract a lot of the expansion logic out of the MR itself.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=121579246
This commit is contained in:
ctingue 2016-05-05 08:01:27 -07:00 • committed by Justine Tunney
parent 16cfd76ac9
commit b435e20cbe
3 changed files with 81 additions and 10 deletions
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22
java/google/registry/model/common/TimeOfYear.java
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@ -14,10 +14,12 @@
package google.registry.model.common;
import static com.google.common.base.Preconditions.checkArgument;
import static google.registry.util.DateTimeUtils.isAtOrAfter;
import static google.registry.util.DateTimeUtils.isBeforeOrAt;
import com.google.common.base.Splitter;
import com.google.common.collect.ImmutableSet;
import com.googlecode.objectify.annotation.Embed;
import com.googlecode.objectify.annotation.Index;
@ -66,14 +68,30 @@ public class TimeOfYear extends ImmutableObject {
return instance;
}
/**
* Returns an {@link ImmutableSet} of {@link DateTime}s of every recurrence of this particular
* time of year within a given range (usually a range spanning many years).
*/
public ImmutableSet<DateTime> getInstancesInRange(DateTime lower, DateTime upper) {
checkArgument(isBeforeOrAt(lower, upper), "Lower bound is not before or at upper bound.");
ImmutableSet.Builder<DateTime> instances = ImmutableSet.builder();
DateTime firstInstance = getNextInstanceAtOrAfter(lower);
for (int year = firstInstance.getYear();
year <= getLastInstanceBeforeOrAt(upper).getYear();
year++) {
instances.add(firstInstance.withYear(year));
}
return instances.build();
}
/** Get the first {@link DateTime} with this month/day/millis that is at or after the start. */
public DateTime atOrAfter(DateTime start) {
public DateTime getNextInstanceAtOrAfter(DateTime start) {
DateTime withSameYear = getDateTimeWithSameYear(start);
return isAtOrAfter(withSameYear, start) ? withSameYear : withSameYear.plusYears(1);
}
/** Get the first {@link DateTime} with this month/day/millis that is at or before the end. */
public DateTime beforeOrAt(DateTime end) {
public DateTime getLastInstanceBeforeOrAt(DateTime end) {
DateTime withSameYear = getDateTimeWithSameYear(end);
return isBeforeOrAt(withSameYear, end) ? withSameYear : withSameYear.minusYears(1);
}