org.apache.flink.table.runtime.operators.aggregate.window.processors.SliceUnsharedWindowAggProcessor Maven / Gradle / Ivy
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This module contains classes that are required by a task manager for
execution of table programs. The content of this module is work-in-progress.
It will replace the runtime classes contained in flink-table-planner once
it is stable. See FLINK-11439 and FLIP-32 for more details.
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/*
* 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.aggregate.window.processors;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.runtime.generated.GeneratedNamespaceAggsHandleFunction;
import org.apache.flink.table.runtime.operators.aggregate.window.buffers.WindowBuffer;
import org.apache.flink.table.runtime.operators.window.slicing.SliceUnsharedAssigner;
import java.time.ZoneId;
/**
* An window aggregate processor implementation which works for {@link SliceUnsharedAssigner}, e.g.
* tumbling windows.
*/
public final class SliceUnsharedWindowAggProcessor extends AbstractWindowAggProcessor {
private static final long serialVersionUID = 1L;
public SliceUnsharedWindowAggProcessor(
GeneratedNamespaceAggsHandleFunction genAggsHandler,
WindowBuffer.Factory windowBufferFactory,
SliceUnsharedAssigner sliceAssigner,
TypeSerializer accSerializer,
ZoneId shiftTimeZone) {
super(genAggsHandler, windowBufferFactory, sliceAssigner, accSerializer, shiftTimeZone);
}
@Override
public void fireWindow(Long windowEnd) throws Exception {
RowData acc = windowState.value(windowEnd);
if (acc == null) {
acc = aggregator.createAccumulators();
}
aggregator.setAccumulators(windowEnd, acc);
RowData aggResult = aggregator.getValue(windowEnd);
collect(aggResult);
}
@Override
protected long sliceStateMergeTarget(long sliceToMerge) throws Exception {
return sliceToMerge;
}
}