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https://issues.apache.org/jira/browse/FLINK-7452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16143937#comment-16143937
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ASF GitHub Bot commented on FLINK-7452:
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GitHub user twalthr opened a pull request:
https://github.com/apache/flink/pull/4612
[FLINK-7452] [types] Add helper methods for all built-in Flink types
## What is the purpose of the change
This PR provides an unified, detailed, and easy to use utility to work with
Flink's built-in Java types.
This class helps users to get an overview about built-in Flink types and
their features/limitations (esp. regarding null support).
## Brief change log
Improved `org.apache.flink.api.common.typeinfo.Types`.
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: yes
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? JavaDocs
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/twalthr/flink FLINK-7452
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4612.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4612
----
commit 2e027ed3c4671363f7023dd9faf7ba0d0c827312
Author: twalthr <[email protected]>
Date: 2017-08-28T12:13:07Z
[FLINK-7452] [types] Add helper methods for all built-in Flink types to
Types
----
> Add helper methods for all built-in Flink types to Types
> --------------------------------------------------------
>
> Key: FLINK-7452
> URL: https://issues.apache.org/jira/browse/FLINK-7452
> Project: Flink
> Issue Type: Improvement
> Components: Type Serialization System
> Reporter: Timo Walther
> Assignee: Timo Walther
>
> Sometimes it is very difficult to provide `TypeInformation` manually, in case
> some extraction fails or is not available. {{TypeHint}}s should be the
> preferred way but this methods can ensure correct types.
> I propose to add all built-in Flink types to the {{Types}}. Such as:
> {code}
> Types.POJO(MyPojo.class)
> Types.POJO(Map<String, TypeInformation>)
> Types.GENERIC(Object.class)
> Types.TUPLE(TypeInformation, ...)
> Types.MAP(TypeInformation, TypeInformation)
> {code}
> The methods should validate that the returned type is exactly the requested
> type. And especially in case of POJO should help creating {{PojoTypeInfo}}.
> Once this is in place, we can deprecate the {{TypeInfoParser}}.
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