dianfu commented on a change in pull request #9890: [FLINK-14272][python][table-planner-blink] Support Blink planner for Python UDF URL: https://github.com/apache/flink/pull/9890#discussion_r335825685
########## File path: flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/utils/python/PythonTableUtils.scala ########## @@ -0,0 +1,448 @@ +/* + * 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.planner.utils.python + +import java.nio.charset.StandardCharsets +import java.sql.{Date, Time, Timestamp} +import java.time.{LocalDate, LocalDateTime, LocalTime} +import java.util.TimeZone +import java.util.function.BiConsumer + +import org.apache.flink.api.common.ExecutionConfig +import org.apache.flink.api.common.io.InputFormat +import org.apache.flink.api.common.typeinfo.{BasicArrayTypeInfo, BasicTypeInfo, PrimitiveArrayTypeInfo, TypeInformation} +import org.apache.flink.api.java.io.CollectionInputFormat +import org.apache.flink.api.java.typeutils.{MapTypeInfo, ObjectArrayTypeInfo, RowTypeInfo} +import org.apache.flink.core.io.InputSplit +import org.apache.flink.table.api.{TableSchema, Types} +import org.apache.flink.table.functions.ScalarFunction +import org.apache.flink.table.functions.python.PythonEnv +import org.apache.flink.table.planner.codegen.PythonFunctionCodeGenerator +import org.apache.flink.table.sources.InputFormatTableSource +import org.apache.flink.types.Row + +import scala.collection.JavaConversions._ + +object PythonTableUtils { + + /** + * Creates a [[ScalarFunction]] for the specified Python ScalarFunction. + * + * @param funcName class name of the user-defined function. Must be a valid Java class identifier + * @param serializedScalarFunction serialized Python scalar function + * @param inputTypes input data types + * @param resultType expected result type + * @param deterministic the determinism of the function's results + * @param pythonEnv the Python execution environment + * @return A generated Java ScalarFunction representation for the specified Python ScalarFunction + */ + def createPythonScalarFunction( + funcName: String, + serializedScalarFunction: Array[Byte], + inputTypes: Array[TypeInformation[_]], + resultType: TypeInformation[_], + deterministic: Boolean, + pythonEnv: PythonEnv): ScalarFunction = + PythonFunctionCodeGenerator.generateScalarFunction( + funcName, + serializedScalarFunction, + inputTypes, + resultType, + deterministic, + pythonEnv) + + /** + * Wrap the unpickled python data with an InputFormat. It will be passed to + * PythonInputFormatTableSource later. + * + * @param data The unpickled python data. + * @param dataType The python data type. + * @param config The execution config used to create serializer. + * @return An InputFormat containing the python data. + */ + def getInputFormat( Review comment: Move to flink-python module? Then there is no need to duplicate this method. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
