[
https://issues.apache.org/jira/browse/FLINK-8558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16537028#comment-16537028
]
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_r201025967
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/formats/TableFormatFactoryService.scala
---
@@ -0,0 +1,245 @@
+/*
+ * 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
+
+import java.util.{ServiceConfigurationError, ServiceLoader, Map => JMap}
+
+import org.apache.flink.table.api._
+import
org.apache.flink.table.descriptors.FormatDescriptorValidator.FORMAT_PROPERTY_VERSION
+import org.apache.flink.table.descriptors._
+import org.apache.flink.table.util.Logging
+
+import _root_.scala.collection.JavaConverters._
+import _root_.scala.collection.mutable
+
+/**
+ * Service provider interface for finding a suitable
[[TableFormatFactory]] for the
+ * given properties.
+ */
+object TableFormatFactoryService extends Logging {
+
+ private lazy val defaultLoader =
ServiceLoader.load(classOf[TableFormatFactory[_]])
+
+ /**
+ * Finds a table format factory of the given class and creates
configured instances from the
+ * given descriptor.
+ *
+ * @param factoryClass desired format factory
--- End diff --
why do we need this param? Shouldn't this be handled by either to instances
of this service for serialisation and deserialisation or by copying the
providing two sets of methods like `~findSerialisationFactory` and
`~findDeserialisationFactory`?
> 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)
