| /* |
| * 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.plan.util |
| |
| import org.apache.flink.streaming.api.bundle.CountCoBundleTrigger |
| import org.apache.flink.table.api.{TableConfig, TableConfigOptions, TableException} |
| import org.apache.flink.table.dataformat.BaseRow |
| import org.apache.flink.table.errorcode.TableErrors |
| import org.apache.flink.table.plan.FlinkJoinRelType |
| |
| import org.apache.calcite.rel.`type`.RelDataType |
| import org.apache.calcite.rel.{RelNode, RelWriter} |
| import org.apache.calcite.rex.RexNode |
| import org.apache.calcite.util.mapping.IntPair |
| |
| import scala.collection.JavaConversions._ |
| import scala.collection.JavaConverters._ |
| import scala.collection.mutable.ArrayBuffer |
| |
| object JoinUtil { |
| |
| private[flink] def joinSelectionToString(inputType: RelDataType): String = { |
| inputType.getFieldNames.asScala.toList.mkString(", ") |
| } |
| |
| private[flink] def joinConditionToString( |
| inputType: RelDataType, |
| joinCondition: RexNode, |
| expression: (RexNode, List[String], Option[List[RexNode]]) => String): String = { |
| val inFields = inputType.getFieldNames.asScala.toList |
| expression(joinCondition, inFields, None) |
| } |
| |
| private[flink] def joinTypeToString(joinType: FlinkJoinRelType) = { |
| joinType match { |
| case FlinkJoinRelType.INNER => "InnerJoin" |
| case FlinkJoinRelType.LEFT=> "LeftOuterJoin" |
| case FlinkJoinRelType.RIGHT => "RightOuterJoin" |
| case FlinkJoinRelType.FULL => "FullOuterJoin" |
| case FlinkJoinRelType.SEMI => "LeftSemiJoin" |
| case FlinkJoinRelType.ANTI => "LeftAntiJoin" |
| } |
| } |
| |
| private[flink] def joinToString( |
| inputType: RelDataType, |
| joinCondition: RexNode, |
| joinType: FlinkJoinRelType, |
| expression: (RexNode, List[String], Option[List[RexNode]]) => String): String = { |
| s"${joinTypeToString(joinType)}" + |
| s"(where: (${joinConditionToString(inputType, joinCondition, expression)}), " + |
| s"join: (${joinSelectionToString(inputType)}))" |
| } |
| |
| private[flink] def joinExplainTerms( |
| pw: RelWriter, |
| inputType: RelDataType, |
| joinCondition: RexNode, |
| joinType: FlinkJoinRelType, |
| joinRowType: RelDataType, |
| expression: (RexNode, List[String], Option[List[RexNode]]) => String): RelWriter = { |
| pw.item("where", joinConditionToString(inputType, joinCondition, expression)) |
| .item("join", joinSelectionToString(joinRowType)) |
| .item("joinType", joinTypeToString(joinType)) |
| } |
| |
| /** |
| * Check and get left and right keys. |
| */ |
| private[flink] def checkAndGetKeys( |
| keyPairs: List[IntPair], |
| left: RelNode, |
| right: RelNode, |
| allowEmpty: Boolean = false): (ArrayBuffer[Int], ArrayBuffer[Int]) = { |
| // get the equality keys |
| val leftKeys = ArrayBuffer.empty[Int] |
| val rightKeys = ArrayBuffer.empty[Int] |
| if (keyPairs.isEmpty) { |
| if (allowEmpty) { |
| (leftKeys, rightKeys) |
| } else { |
| throw new TableException( |
| TableErrors.INST.sqlJoinEqualConditionNotFound( |
| s"\tleft: ${left.toString}\n\tright: ${right.toString}")) |
| } |
| } else { |
| // at least one equality expression |
| val leftFields = left.getRowType.getFieldList |
| val rightFields = right.getRowType.getFieldList |
| |
| keyPairs.foreach(pair => { |
| val leftKeyType = leftFields.get(pair.source).getType.getSqlTypeName |
| val rightKeyType = rightFields.get(pair.target).getType.getSqlTypeName |
| |
| // check if keys are compatible |
| if (leftKeyType == rightKeyType) { |
| // add key pair |
| leftKeys.add(pair.source) |
| rightKeys.add(pair.target) |
| } else { |
| throw new TableException( |
| TableErrors.INST.sqlJoinEqualJoinOnIncompatibleTypes( |
| s"\tLeft: ${left.toString}\n\tright: ${right.toString}")) |
| } |
| }) |
| (leftKeys, rightKeys) |
| } |
| } |
| |
| def getMiniBatchTrigger(tableConfig: TableConfig): CountCoBundleTrigger[BaseRow, BaseRow] = { |
| new CountCoBundleTrigger[BaseRow, BaseRow]( |
| tableConfig.getConf.getLong(TableConfigOptions.SQL_EXEC_MINIBATCH_SIZE)) |
| } |
| } |