| /* |
| * 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.sinks |
| |
| import org.apache.flink.annotation.Internal |
| import org.apache.flink.streaming.api.datastream.DataStream |
| import org.apache.flink.table.api.{Table, TableException} |
| import org.apache.flink.table.api.types.DataType |
| |
| /** |
| * A [[DataStreamTableSink]] specifies how to emit a [[Table]] to an DataStream[T] |
| * |
| * @param table The [[Table]] to emit. |
| * @param outputType The [[DataType]] that specifies the type of the [[DataStream]]. |
| * @param updatesAsRetraction Set to true to encode updates as retraction messages. |
| * @param withChangeFlag Set to true to emit records with change flags. |
| * @tparam T The type of the resulting [[DataStream]]. |
| */ |
| @Internal |
| class DataStreamTableSink[T]( |
| table: Table, |
| outputType: DataType, |
| val updatesAsRetraction: Boolean, |
| val withChangeFlag: Boolean) extends TableSink[T] { |
| |
| private lazy val tableSchema = table.getSchema |
| |
| /** |
| * Return the type expected by this [[TableSink]]. |
| * |
| * This type should depend on the types returned by [[getFieldNames]]. |
| * |
| * @return The type expected by this [[TableSink]]. |
| */ |
| override def getOutputType: DataType = outputType |
| |
| /** Returns the types of the table fields. */ |
| override def getFieldTypes: Array[DataType] = Array(tableSchema.getTypes: _*) |
| |
| /** Returns the names of the table fields. */ |
| override def getFieldNames: Array[String] = tableSchema.getColumnNames |
| |
| override def configure( |
| fieldNames: Array[String], |
| fieldTypes: Array[DataType]): TableSink[T] = { |
| throw new TableException(s"configure is not supported.") |
| } |
| |
| } |