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[FLINK-11834] [table-planner-blink] Introduce flink logical relationa…
…l nodes (apache#7910) * [FLINK-11834] [table-planner-blink] Introduce flink logical relational nodes This commit includes most flink logical relational nodes, the rest will be introduced by other commit. * add FlinkLogicalTableFunctionScan * add FlinkLogicalTableSourceScan * move RankRange into Rank.scala file
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96 changes: 96 additions & 0 deletions
96
...table-planner-blink/src/main/scala/org/apache/flink/table/plan/nodes/calcite/Expand.scala
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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:https://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. | ||
| */ | ||
|
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| package org.apache.flink.table.plan.nodes.calcite | ||
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| import org.apache.calcite.plan.{RelOptCluster, RelOptCost, RelOptPlanner, RelTraitSet} | ||
| import org.apache.calcite.rel.`type`.RelDataType | ||
| import org.apache.calcite.rel.metadata.RelMetadataQuery | ||
| import org.apache.calcite.rel.{RelNode, SingleRel} | ||
| import org.apache.calcite.rex.{RexLiteral, RexNode} | ||
| import org.apache.calcite.util.Litmus | ||
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| import java.util | ||
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| import scala.collection.JavaConversions._ | ||
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| /** | ||
| * Relational expression that apply a number of projects to every input row, | ||
| * hence we will get multiple output rows for an input row. | ||
| * | ||
| * <p/> Values of expand_id should be unique. | ||
| * | ||
| * @param cluster cluster that this relational expression belongs to | ||
| * @param traits the traits of this rel | ||
| * @param input input relational expression | ||
| * @param outputRowType output row type | ||
| * @param projects all projects, each project contains list of expressions for | ||
| * the output columns | ||
| * @param expandIdIndex expand_id('$e') field index | ||
| */ | ||
| abstract class Expand( | ||
| cluster: RelOptCluster, | ||
| traits: RelTraitSet, | ||
| input: RelNode, | ||
| outputRowType: RelDataType, | ||
| val projects: util.List[util.List[RexNode]], | ||
| val expandIdIndex: Int) | ||
| extends SingleRel(cluster, traits, input) { | ||
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| isValid(Litmus.THROW, null) | ||
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| override def isValid(litmus: Litmus, context: RelNode.Context): Boolean = { | ||
| if (projects.size() <= 1) { | ||
| return litmus.fail("Expand should output more than one rows, otherwise use Project.") | ||
| } | ||
| if (projects.exists(_.size != outputRowType.getFieldCount)) { | ||
| return litmus.fail("project filed count is not equal to output field count.") | ||
| } | ||
| if (expandIdIndex < 0 || expandIdIndex >= outputRowType.getFieldCount) { | ||
| return litmus.fail( | ||
| "expand_id field index should be greater than 0 and less than output field count.") | ||
| } | ||
| val expandIdValues = new util.HashSet[Any]() | ||
| for (project <- projects) { | ||
| project.get(expandIdIndex) match { | ||
| case literal: RexLiteral => expandIdValues.add(literal.getValue) | ||
| case _ => return litmus.fail("expand_id value should not be null.") | ||
| } | ||
| } | ||
| if (expandIdValues.size() != projects.size()) { | ||
| return litmus.fail("values of expand_id should be unique.") | ||
| } | ||
| litmus.succeed() | ||
| } | ||
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| override def deriveRowType(): RelDataType = outputRowType | ||
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| override def computeSelfCost(planner: RelOptPlanner, mq: RelMetadataQuery): RelOptCost = { | ||
| val rowCnt = mq.getRowCount(this.getInput) * projects.size() | ||
| planner.getCostFactory.makeCost(rowCnt, rowCnt, 0) | ||
| } | ||
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| override def estimateRowCount(mq: RelMetadataQuery): Double = { | ||
| val childRowCnt = mq.getRowCount(this.getInput) | ||
| if (childRowCnt != null) { | ||
| childRowCnt * projects.size() | ||
| } else { | ||
| null.asInstanceOf[Double] | ||
| } | ||
| } | ||
| } |
72 changes: 72 additions & 0 deletions
72
...lanner-blink/src/main/scala/org/apache/flink/table/plan/nodes/calcite/LogicalExpand.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| /* | ||
| * 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:https://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. | ||
| */ | ||
|
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| package org.apache.flink.table.plan.nodes.calcite | ||
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| import org.apache.calcite.plan.{Convention, RelOptCluster, RelTraitSet} | ||
| import org.apache.calcite.rel.`type`.RelDataType | ||
| import org.apache.calcite.rel.{RelNode, RelWriter} | ||
| import org.apache.calcite.rex.{RexInputRef, RexLiteral, RexNode} | ||
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| import java.util | ||
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| import scala.collection.JavaConversions._ | ||
|
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| /** | ||
| * Sub-class of [[Expand]] that is a relational expression | ||
| * which returns multiple rows expanded from one input row. | ||
| * This class corresponds to Calcite logical rel. | ||
| */ | ||
| final class LogicalExpand( | ||
| cluster: RelOptCluster, | ||
| traits: RelTraitSet, | ||
| input: RelNode, | ||
| outputRowType: RelDataType, | ||
| projects: util.List[util.List[RexNode]], | ||
| expandIdIndex: Int) | ||
| extends Expand(cluster, traits, input, outputRowType, projects, expandIdIndex) { | ||
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| override def copy(traitSet: RelTraitSet, inputs: util.List[RelNode]): RelNode = { | ||
| new LogicalExpand(cluster, traitSet, inputs.get(0), outputRowType, projects, expandIdIndex) | ||
| } | ||
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| override def explainTerms(pw: RelWriter): RelWriter = { | ||
| val names = outputRowType.getFieldNames | ||
| val terms = projects.map { | ||
| project => | ||
| project.zipWithIndex.map { | ||
| case (r: RexInputRef, i: Int) => s"${names.get(i)}=[${r.getName}]" | ||
| case (l: RexLiteral, i: Int) => s"${names.get(i)}=[${l.getValue3}]" | ||
| case (o, _) => s"$o" | ||
| }.mkString("{", ", ", "}") | ||
| }.mkString(", ") | ||
| super.explainTerms(pw).item("projects", terms) | ||
| } | ||
| } | ||
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| object LogicalExpand { | ||
| def create( | ||
| input: RelNode, | ||
| outputRowType: RelDataType, | ||
| projects: util.List[util.List[RexNode]], | ||
| expandIdIndex: Int): LogicalExpand = { | ||
| val traits = input.getCluster.traitSetOf(Convention.NONE) | ||
| new LogicalExpand(input.getCluster, traits, input, outputRowType, projects, expandIdIndex) | ||
| } | ||
| } | ||
|
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