DonalEvans commented on a change in pull request #7236:
URL: https://github.com/apache/geode/pull/7236#discussion_r778994415
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File path:
geode-for-redis/src/main/java/org/apache/geode/redis/internal/data/RedisSet.java
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@@ -110,6 +111,47 @@ private static MemberSet calculateDiff(RegionProvider
regionProvider, List<Redis
return diff;
}
+ public static Set<byte[]> sinter(RegionProvider regionProvider,
List<RedisKey> keys) {
+ MemberSet result = calculateInter(regionProvider, keys);
+ if (result == null) {
+ return Collections.emptySet();
+ }
+ return result;
+ }
+
+ private static MemberSet calculateInter(RegionProvider regionProvider,
List<RedisKey> keys) {
+ List<RedisSet> sets = new ArrayList<>(keys.size());
+ RedisSet smallestSet = null;
+
+ for (RedisKey key : keys) {
+ RedisSet redisSet = regionProvider.getTypedRedisData(REDIS_SET, key,
true);
+ if (redisSet == NULL_REDIS_SET || redisSet.scard() == 0) {
+ return null;
Review comment:
If you inline the `calculateInter()` method, then returning
`Collections.emptySet()` here is fine, since `sinter()` returns a `Set<byte[]>`
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