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https://issues.apache.org/jira/browse/FLINK-8558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16537004#comment-16537004
]
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_r200988428
--- Diff:
flink-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/KafkaTableSource.java
---
@@ -55,50 +57,101 @@
*/
@Internal
public abstract class KafkaTableSource
- implements StreamTableSource<Row>, DefinedProctimeAttribute,
DefinedRowtimeAttributes {
+ implements StreamTableSource<Row>, DefinedProctimeAttribute,
DefinedRowtimeAttributes, DefinedFieldMapping {
+
+ // common table source attributes
+ // TODO make all attributes final once we drop support for
format-specific table sources
/** The schema of the table. */
private final TableSchema schema;
+ /** Field name of the processing time attribute, null if no processing
time field is defined. */
+ private String proctimeAttribute;
+
+ /** Descriptor for a rowtime attribute. */
+ private List<RowtimeAttributeDescriptor> rowtimeAttributeDescriptors;
+
+ /** Mapping for the fields of the table schema to fields of the
physical returned type or null. */
+ private Map<String, String> fieldMapping;
--- End diff --
please check my other comment about that. `@Nullable` without compiler
errors is not in any way better :(
> 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.
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