org.apache.flink.table.plan.nodes.FlinkConventions.scala Maven / Gradle / Ivy
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* 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.plan.nodes
import org.apache.flink.table.plan.nodes.logical.FlinkLogicalRel
import org.apache.flink.table.plan.nodes.physical.batch.BatchPhysicalRel
import org.apache.flink.table.plan.nodes.physical.stream.StreamPhysicalRel
import org.apache.calcite.plan.{Convention, RelTraitSet}
import org.apache.calcite.rel.RelNode
/**
* Override the default convention implementation to support using AbstractConverter for conversion
*/
class FlinkConvention(name: String, relClass: Class[_ <: RelNode])
extends Convention.Impl(name, relClass) {
override def useAbstractConvertersForConversion(
fromTraits: RelTraitSet,
toTraits: RelTraitSet): Boolean = {
if (relClass == classOf[StreamPhysicalRel]) {
// stream
!fromTraits.satisfies(toTraits) &&
fromTraits.containsIfApplicable(FlinkConventions.STREAM_PHYSICAL) &&
toTraits.containsIfApplicable(FlinkConventions.STREAM_PHYSICAL)
} else {
// batch
!fromTraits.satisfies(toTraits) &&
fromTraits.containsIfApplicable(FlinkConventions.BATCH_PHYSICAL) &&
toTraits.containsIfApplicable(FlinkConventions.BATCH_PHYSICAL)
}
}
}
object FlinkConventions {
val LOGICAL: Convention = new Convention.Impl("LOGICAL", classOf[FlinkLogicalRel])
val STREAM_PHYSICAL: Convention =
new FlinkConvention("STREAM_PHYSICAL", classOf[StreamPhysicalRel])
val BATCH_PHYSICAL: Convention =
new FlinkConvention("BATCH_PHYSICAL", classOf[BatchPhysicalRel])
}