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https://issues.apache.org/jira/browse/FLINK-7452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16291063#comment-16291063
 ] 

ASF GitHub Bot commented on FLINK-7452:
---------------------------------------

Github user fhueske commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4612#discussion_r156940557
  
    --- Diff: 
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/api/stream/table/stringexpr/CorrelateStringExpressionTest.scala
 ---
    @@ -34,7 +34,7 @@ class CorrelateStringExpressionTest extends TableTestBase 
{
     
         val util = streamTestUtil()
         val sTab = util.addTable[(Int, Long, String)]('a, 'b, 'c)
    -    val typeInfo = new RowTypeInfo(Seq(Types.INT, Types.LONG, 
Types.STRING): _*)
    +    val typeInfo = new RowTypeInfo(Seq(typeutils.Types.INT, 
typeutils.Types.LONG, typeutils.Types.STRING): _*)
    --- End diff --
    
    line exceeds 100 characters.


> 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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