| /* |
| * 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.functions.sql.internal |
| |
| import org.apache.calcite.sql.`type`.{OperandTypes, ReturnTypes, SqlTypeFamily} |
| import org.apache.calcite.sql.{SqlFunction, SqlFunctionCategory, SqlKind} |
| import org.apache.flink.table.api.TableConfig |
| import org.apache.flink.table.plan.rules.physical.batch.runtimefilter.UselessRuntimeFilterRemoveRule |
| |
| import scala.collection.mutable |
| |
| class SqlRuntimeFilterBuilderFunction( |
| val broadcastId: String, |
| var ndv: Double, |
| var rowCount: Double) extends SqlFunction( |
| s"RUNTIME_FILTER_BUILDER_$broadcastId", |
| SqlKind.OTHER_FUNCTION, |
| ReturnTypes.BOOLEAN, |
| null, |
| OperandTypes.family(SqlTypeFamily.ANY), |
| SqlFunctionCategory.USER_DEFINED_FUNCTION){ |
| |
| val filters: mutable.ArrayBuffer[SqlRuntimeFilterFunction] = new mutable.ArrayBuffer |
| |
| def minFpp(conf: TableConfig): Double = { |
| require(filters.nonEmpty) |
| var min = Double.MaxValue |
| for (elem <- filters) { |
| val fpp = UselessRuntimeFilterRemoveRule.getMinSuitableFpp(conf, elem.rowCount, ndv) |
| min = Math.min(fpp, min) |
| } |
| min |
| } |
| |
| override def toString = s"RUNTIME_FILTER_BUILDER_$broadcastId" |
| } |