Make Cron.CronPattern.FIELDS immutable
The List returned from Arrays.asList() is able to mutate the underlying
array.
diff --git a/src/com/google/enterprise/adaptor/CronScheduler.java b/src/com/google/enterprise/adaptor/CronScheduler.java
index 215fb89..f0f260a 100644
--- a/src/com/google/enterprise/adaptor/CronScheduler.java
+++ b/src/com/google/enterprise/adaptor/CronScheduler.java
@@ -163,7 +163,8 @@
}
private static class CronPattern {
- private static final List<Field> FIELDS = Arrays.asList(Field.values());
+ private static final List<Field> FIELDS
+ = Collections.unmodifiableList(Arrays.asList(Field.values()));
private static enum Field {
MINUTE(0, 60, Calendar.MINUTE, 0),
