affo commented on code in PR #24471: URL: https://github.com/apache/flink/pull/24471#discussion_r1609692387
########## flink-end-to-end-tests/flink-batch-sql-test/src/test/java/org/apache/flink/sql/tests/Generator.java: ########## @@ -0,0 +1,83 @@ +/* + * 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.flink.sql.tests; + +import org.apache.flink.table.data.RowData; + +import org.jetbrains.annotations.NotNull; + +import java.time.Instant; +import java.time.LocalDateTime; +import java.time.ZoneOffset; +import java.util.Iterator; +import java.util.NoSuchElementException; + +class Generator implements Iterator<RowData>, Iterable<RowData> { + final int numKeys; + + private int keyIndex = 0; + + private final long durationMs; + private final long stepMs; + private final long offsetMs; + private long ms = 0; + + static Generator create( + int numKeys, float rowsPerKeyAndSecond, int durationSeconds, int offsetSeconds) { + int sleepMs = (int) (1000 / rowsPerKeyAndSecond); + return new Generator(numKeys, durationSeconds * 1000L, sleepMs, offsetSeconds * 2000L); + } + + Generator(int numKeys, long durationMs, long stepMs, long offsetMs) { + this.numKeys = numKeys; + this.durationMs = durationMs; + this.stepMs = stepMs; + this.offsetMs = offsetMs; + } + + @Override + public boolean hasNext() { + return ms < durationMs; + } + + @Override + public RowData next() { + if (!hasNext()) { + throw new NoSuchElementException(); + } + RowData row = + new GeneratedRow( + keyIndex, + LocalDateTime.ofInstant( + Instant.ofEpochMilli(ms + offsetMs), ZoneOffset.UTC), + "Some payload..."); + ++keyIndex; + if (keyIndex >= numKeys) { + keyIndex = 0; + ms += stepMs; + } + return row; + } + + @NotNull Review Comment: I think this falls in this case: > but can be used in certain cases to override a previous annotation, As `iterator` overrides: ```java public interface Iterable<T> { /** * Returns an iterator over elements of type {@code T}. * * @return an Iterator. */ Iterator<T> iterator(); ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
