| /* |
| * 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.nodes.calcite |
| |
| import org.apache.flink.table.api.types.DataTypes |
| import org.apache.flink.table.calcite.FlinkTypeFactory |
| import org.apache.flink.table.sinks.TableSink |
| import org.apache.calcite.plan.{RelOptCluster, RelTraitSet} |
| import org.apache.calcite.rel.{RelNode, RelWriter, SingleRel} |
| import org.apache.calcite.rel.`type`.RelDataType |
| |
| /** |
| * Relational expression that write out data of input node into a [[TableSink]]. |
| * |
| * @param cluster cluster that this relational expression belongs to |
| * @param traitSet the traits of this rel |
| * @param input input relational expression |
| * @param sink Table sink to write into |
| * @param sinkName Name of tableSink, which is not required property, that is, it could be null |
| */ |
| abstract class Sink( |
| cluster: RelOptCluster, |
| traitSet: RelTraitSet, |
| input: RelNode, |
| val sink: TableSink[_], |
| val sinkName: String) |
| extends SingleRel( |
| cluster, |
| traitSet, |
| input) { |
| |
| override def deriveRowType(): RelDataType = { |
| val typeFactory = getCluster.getTypeFactory.asInstanceOf[FlinkTypeFactory] |
| val internalTypeOfSink = sink.getOutputType.toInternalType |
| typeFactory.createTypeFromInternalType(internalTypeOfSink, isNullable = true) |
| } |
| |
| override def explainTerms(pw: RelWriter): RelWriter = { |
| super.explainTerms(pw) |
| .itemIf("name", sinkName, sinkName != null) |
| .item("fields", sink.getFieldNames.mkString(", ")) |
| } |
| |
| } |