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Dual-read RegistryCursor prior to Cursor cutover

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=125057857
This commit is contained in:
ctingue 2016-06-16 07:15:49 -07:00 • committed by Ben McIlwain
parent 5a4877805b
commit 3e0963dfdb
2 changed files with 55 additions and 2 deletions
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15
java/google/registry/model/registry/RegistryCursor.java
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@ -73,8 +73,21 @@ public class RegistryCursor extends ImmutableObject {
DateTime date;
/** Convenience shortcut to load a cursor for a given registry and cursor type. */
/**
* Convenience shortcut to load a cursor (as an {@link Optional}) for a given registry and cursor
* type. Note that this currently reads the new cursor style first, then fails back to the old
* RegistryCursor if the corresponding new style cursor does not exist.
*/
public static Optional<DateTime> load(Registry registry, CursorType cursorType) {
Cursor newStyleCursor =
ofy()
.load()
.key(Cursor.createKey(Cursor.CursorType.valueOf(cursorType.name()), registry))
.now();
if (newStyleCursor != null) {
return Optional.of(newStyleCursor.getCursorTime());
}
// New cursor style wasn't found for this TLD and cursor type, so load the old style.
Key<RegistryCursor> key =
Key.create(Key.create(registry), RegistryCursor.class, cursorType.name());
RegistryCursor cursor = ofy().load().key(key).now();