org.apache.flink.table.planner.plan.optimize.program.FlinkMiniBatchIntervalTraitInitProgram.scala Maven / Gradle / Ivy

/*
 * 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
 *
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package org.apache.flink.table.planner.plan.optimize.program

import org.apache.flink.table.planner.plan.`trait`.MiniBatchIntervalTrait

import org.apache.calcite.rel.RelNode

/**
  * A FlinkOptimizeProgram that does some initialization be for MiniBatch Interval inference.
  */
class FlinkMiniBatchIntervalTraitInitProgram extends FlinkOptimizeProgram[StreamOptimizeContext] {

  override def optimize(input: RelNode, context: StreamOptimizeContext): RelNode = {
    val updatedTraitSet = input.getTraitSet.plus(
      new MiniBatchIntervalTrait(context.getMiniBatchInterval))
    input.copy(updatedTraitSet, input.getInputs)
  }
}