HuangXingBo commented on a change in pull request #14775: URL: https://github.com/apache/flink/pull/14775#discussion_r569213485
########## File path: flink-python/src/main/java/org/apache/flink/table/runtime/operators/python/aggregate/PythonStreamGroupWindowAggregateOperator.java ########## @@ -0,0 +1,342 @@ +/* + * 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.table.runtime.operators.python.aggregate; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.annotation.VisibleForTesting; +import org.apache.flink.api.common.ExecutionConfig; +import org.apache.flink.api.common.typeutils.TypeSerializer; +import org.apache.flink.api.java.tuple.Tuple2; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.fnexecution.v1.FlinkFnApi; +import org.apache.flink.streaming.api.operators.InternalTimer; +import org.apache.flink.streaming.api.operators.InternalTimerService; +import org.apache.flink.streaming.api.operators.Triggerable; +import org.apache.flink.table.data.GenericRowData; +import org.apache.flink.table.data.RowData; +import org.apache.flink.table.data.UpdatableRowData; +import org.apache.flink.table.expressions.ValueLiteralExpression; +import org.apache.flink.table.functions.python.PythonAggregateFunctionInfo; +import org.apache.flink.table.planner.plan.logical.LogicalWindow; +import org.apache.flink.table.planner.plan.logical.SessionGroupWindow; +import org.apache.flink.table.planner.plan.logical.SlidingGroupWindow; +import org.apache.flink.table.planner.plan.logical.TumblingGroupWindow; +import org.apache.flink.table.planner.plan.utils.AggregateUtil; +import org.apache.flink.table.planner.typeutils.DataViewUtils; +import org.apache.flink.table.runtime.operators.window.CountWindow; +import org.apache.flink.table.runtime.operators.window.TimeWindow; +import org.apache.flink.table.runtime.operators.window.Window; +import org.apache.flink.table.runtime.operators.window.assigners.WindowAssigner; +import org.apache.flink.table.types.logical.BigIntType; +import org.apache.flink.table.types.logical.RowType; +import org.apache.flink.table.types.logical.TinyIntType; + +import java.util.ArrayList; +import java.util.List; + +/** The Python Group Window AggregateFunction operator for the blink planner. */ +@Internal +public class PythonStreamGroupWindowAggregateOperator<K, W extends Window> + extends AbstractPythonStreamAggregateOperator implements Triggerable<K, W> { + + private static final long serialVersionUID = 1L; + + @VisibleForTesting + static final String STREAM_GROUP_WINDOW_AGGREGATE_URN = + "flink:transform:stream_group_window_aggregate:v1"; + + @VisibleForTesting static final byte REGISTER_EVENT_TIMER = 0; + + @VisibleForTesting static final byte REGISTER_PROCESSING_TIMER = 1; + + @VisibleForTesting static final byte DELETE_EVENT_TIMER = 2; + + @VisibleForTesting static final byte DELETE_PROCESSING_TIMER = 4; + + /** True if the count(*) agg is inserted by the planner. */ + private final boolean countStarInserted; + + /** The row time index of the input data. */ + @VisibleForTesting final int inputTimeFieldIndex; + + /** + * The allowed lateness for elements. This is used for: + * + * <ul> + * <li>Deciding if an element should be dropped from a window due to lateness. + * <li>Clearing the state of a window if the system time passes the {@code window.maxTimestamp + * + allowedLateness} landmark. + * </ul> + */ + @VisibleForTesting final long allowedLateness; + + /** + * The Infos of the Window. 0 -> start of the Window. 1 -> end of the Window. 2 -> row time of + * the Window. 3 -> proc time of the Window. + */ + private final int[] namedProperties; + + /** A {@link WindowAssigner} assigns zero or more {@link Window Windows} to an element. */ + @VisibleForTesting final WindowAssigner<W> windowAssigner; + + /** Window Type includes Tumble window, Sliding window and Session Window. */ + private transient FlinkFnApi.GroupWindow.WindowType windowType; + + /** Whether it is a row time window. */ + private transient boolean isRowTime; + + /** Whether it is a Time Window. */ + private transient boolean isTimeWindow; + + /** Window size. */ + private transient long size; + + /** Window slide. */ + private transient long slide; + + /** For serializing the window in checkpoints. */ + @VisibleForTesting transient TypeSerializer<W> windowSerializer; + + /** Interface for working with time and timers. */ + private transient InternalTimerService<W> internalTimerService; + + private UpdatableRowData reuseTimerData; + + private int timerDataLength; + + private int keyLength; + + public PythonStreamGroupWindowAggregateOperator( + Configuration config, + RowType inputType, + RowType outputType, + PythonAggregateFunctionInfo[] aggregateFunctions, + DataViewUtils.DataViewSpec[][] dataViewSpecs, + int[] grouping, + int indexOfCountStar, + boolean generateUpdateBefore, + boolean countStarInserted, + int inputTimeFieldIndex, + WindowAssigner<W> windowAssigner, + LogicalWindow window, + long allowedLateness, + int[] namedProperties) { + super( + config, + inputType, + outputType, + aggregateFunctions, + dataViewSpecs, + grouping, + indexOfCountStar, + generateUpdateBefore); + this.countStarInserted = countStarInserted; + this.inputTimeFieldIndex = inputTimeFieldIndex; + this.windowAssigner = windowAssigner; + this.allowedLateness = allowedLateness; + this.namedProperties = namedProperties; + buildWindow(window); + } + + @Override + public void open() throws Exception { + windowSerializer = windowAssigner.getWindowSerializer(new ExecutionConfig()); + internalTimerService = getInternalTimerService("window-timers", windowSerializer, this); + if (isTimeWindow) { Review comment: Yes. make sense. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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