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ASF GitHub Bot commented on FLINK-8558: --------------------------------------- Github user pnowojski commented on a diff in the pull request: https://github.com/apache/flink/pull/6264#discussion_r201029821 --- Diff: flink-libraries/flink-table/src/test/scala/org/apache/flink/table/formats/utils/TestTableFormatFactory.scala --- @@ -0,0 +1,60 @@ +/* + * 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.formats.utils + +import java.util + +import org.apache.flink.api.common.serialization.DeserializationSchema +import org.apache.flink.table.descriptors.{DescriptorProperties, FormatDescriptorValidator, SchemaValidator} +import org.apache.flink.table.formats.DeserializationSchemaFactory +import org.apache.flink.types.Row + +/** + * Table format factory for testing. + */ +class TestTableFormatFactory extends DeserializationSchemaFactory[Row] { + + override def requiredContext(): util.Map[String, String] = { + val context = new util.HashMap[String, String]() + context.put("format.type", "test-format") --- End diff -- I think you should extract or reuse already extracted constants for all of those strings like `format.type` `format.path` `format.important` etc. Generally speaking if a constant occurs more then once in code, it should be extracted. > Add unified format interfaces and format discovery > -------------------------------------------------- > > Key: FLINK-8558 > URL: https://issues.apache.org/jira/browse/FLINK-8558 > Project: Flink > Issue Type: New Feature > Components: Streaming Connectors > Reporter: Timo Walther > Assignee: Timo Walther > Priority: Major > Labels: pull-request-available > > In the last release, we introduced a new module {{flink-formats}}. Currently > only {{flink-avro}} is located there but we will add more formats such as > {{flink-json}}, {{flink-protobuf}}, and so on. For better separation of > concerns we want decouple connectors from formats: e.g., remove > {{KafkaAvroTableSource}} and {{KafkaJsonTableSource}}. > A newly introduced {{FormatFactory}} will use Java service loaders to > discovery available formats in the classpath (similar to how file systems are > discovered now). A {{Format}} will provide a method for converting {{byte[]}} > to target record type. -- This message was sent by Atlassian JIRA (v7.6.3#76005)