tzulitai commented on a change in pull request #42: [FLINK-16390][sdk] Add view
and clear methods to PersistedTable
URL: https://github.com/apache/flink-statefun/pull/42#discussion_r386763061
##########
File path:
statefun-flink/statefun-flink-core/src/main/java/org/apache/flink/statefun/flink/core/state/FlinkTableAccessor.java
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@@ -55,4 +57,19 @@ public void remove(K key) {
throw new RuntimeException(e);
}
}
+
+ @Override
+ public Iterable<Map.Entry<K, V>> view() {
+ try {
+ Iterable<Map.Entry<K, V>> entries = handle.entries();
+ return entries == null ? Collections.emptyList() : entries;
Review comment:
Actually, I think Flink user `MapState` never returns `null` for `entries()`
/ `keys()` / `values()`.
The actual `MapState` handle that the user gets is always a
`UserFacingMapState` in Flink that wraps the actual RocksDB / heap map state
handle, which uses an empty map state if the wrapped state handle returns
`null` for those methods.
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