mjsax commented on a change in pull request #11582:
URL: https://github.com/apache/kafka/pull/11582#discussion_r771737792
##########
File path:
streams/src/main/java/org/apache/kafka/streams/state/internals/StoreQueryUtils.java
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@@ -16,18 +16,78 @@
*/
package org.apache.kafka.streams.state.internals;
+import org.apache.kafka.common.utils.Bytes;
import org.apache.kafka.streams.processor.StateStore;
import org.apache.kafka.streams.processor.StateStoreContext;
import org.apache.kafka.streams.processor.api.RecordMetadata;
+import org.apache.kafka.streams.query.FailureReason;
+import org.apache.kafka.streams.query.KeyQuery;
import org.apache.kafka.streams.query.Position;
import org.apache.kafka.streams.query.PositionBound;
import org.apache.kafka.streams.query.Query;
import org.apache.kafka.streams.query.QueryResult;
+import org.apache.kafka.streams.state.KeyValueStore;
+import java.io.PrintWriter;
+import java.io.StringWriter;
import java.util.Map;
+import static org.apache.kafka.common.utils.Utils.mkEntry;
+import static org.apache.kafka.common.utils.Utils.mkMap;
+
public final class StoreQueryUtils {
+ /**
+ * a utility interface to facilitate stores' query dispatch logic,
+ * allowing them to generically store query execution logic as the values
+ * in a map.
+ */
+ @FunctionalInterface
Review comment:
I see. So we should add it elsewhere, too (of course not as part of the
IQ work).
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