[jira] [Assigned] (NIFI-5492) UDF in Expression Language

["Ed Berezitsky (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-5492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ed Berezitsky reassigned NIFI-5492:
-----------------------------------

    Assignee:     (was: Ed Berezitsky)

> UDF in Expression Language
> --------------------------
>
>                 Key: NIFI-5492
>                 URL: https://issues.apache.org/jira/browse/NIFI-5492
>             Project: Apache NiFi
>          Issue Type: New Feature
>          Components: Core Framework
>    Affects Versions: 1.5.0, 1.6.0, 1.7.0, 1.7.1
>            Reporter: Ed Berezitsky
>            Priority: Major
>              Labels: features, patch
>         Attachments: 0001-NIFI-5492_EXEC-Adding-UDF-to-EL.patch
>
>
> Set of functions available to use in expression language is limited by predefined ones.
> This request is to provide an ability to plug in custom/user defined functions.
> For example:
> ${*exec*('com.example.MyUDF', 'param1', 'param2')}
> Should be able to support:
>  # Multiple, not limited number of parameters (including zero params)
>  # Param data types should  support all EL data types (dates, whole numbers, decimals, strings, booleans)
>  



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