Github user franz1981 commented on a diff in the pull request:
https://github.com/apache/activemq-artemis/pull/2490#discussion_r246323998
--- Diff:
artemis-commons/src/main/java/org/apache/activemq/artemis/utils/collections/MultiResettableIterator.java
---
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.activemq.artemis.utils.collections;
+
+/**
+ * Extends MultiIterator, adding the ability if the underlying iterators
are resettable, then its self can reset.
+ * It achieves this by going back to the first iterator, and as moves to
another iterator it resets it.
+ *
+ * @param <T> type of the class of the iterator.
+ */
+public class MultiResettableIterator<T> extends MultiIterator<T>
implements ResettableIterator<T> {
+
+ public MultiResettableIterator(ResettableIterator<T>[] iterators) {
+ super(iterators);
+ }
+
+ @Override
+ protected void moveTo(int index) {
+ super.moveTo(index);
+ if (index > -1) {
+ ((ResettableIterator<T>) get(index)).reset();
--- End diff --
this cast could be avoided thanks to the changes on generics on
`MultiIterator`
---
