| /* |
| * 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.cost |
| |
| import java.lang.Double |
| |
| import org.apache.calcite.rel.core.Calc |
| import org.apache.calcite.rel.metadata.{ReflectiveRelMetadataProvider, RelMdRowCount, RelMetadataProvider, RelMetadataQuery} |
| import org.apache.calcite.util.BuiltInMethod |
| import org.apache.flink.table.plan.nodes.dataset.DataSetSort |
| |
| object FlinkRelMdRowCount extends RelMdRowCount { |
| |
| val SOURCE: RelMetadataProvider = ReflectiveRelMetadataProvider.reflectiveSource( |
| BuiltInMethod.ROW_COUNT.method, |
| this) |
| |
| override def getRowCount(rel: Calc, mq: RelMetadataQuery): Double = rel.estimateRowCount(mq) |
| |
| def getRowCount(rel: DataSetSort, mq: RelMetadataQuery): Double = rel.estimateRowCount(mq) |
| } |
