[jira] [Commented] (NIFI-6745) No possiblity to set empty string as escape character

["Otto Fowler (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-6745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16945823#comment-16945823 ] 

Otto Fowler commented on NIFI-6745:
-----------------------------------

What processor or service/reader are you referring to?  Do you have an example csv file that doesn't parse?  An example flow?

The documentation of the [CSVReader](https://nifi.apache.org/docs/nifi-docs/) seems to state that you can 
- select different csv parser implementations
- change the escape character


> No possiblity to set empty string as escape character
> -----------------------------------------------------
>
>                 Key: NIFI-6745
>                 URL: https://issues.apache.org/jira/browse/NIFI-6745
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.9.2
>            Reporter: N
>            Priority: Trivial
>
> In a traditional csv parser like excel if you want to include a comma in a field you encapsulated it with quotes ("foo,bar") and if you need quotes between those quotes you add another pair of quotes before it ( "she said:""foo""" )
> however, in your csv parser there is another rule which says that '\' is a classic escape char and you can't disable it, this is a problematic rule because:
> If you have a csv which contains a JSON as a string inside one of his fields like (1,test,"\{""foo"":""bar""}") and you want to add a ' " ' inside it you need to add a ' \' before it(1,test,"\{""foo"":""b\""r""}") because you need to escape the " for the JSON parser, but in your csv parser this example will fail becuse it will be parsed to "\{""foo"":""b"r""}")" which is invalid ( the exemple sould become \{"foo":"b/"r"} ) .
> In order to fix this adding the optoin to disable the escape char in the csv parser will fix this problem.
> And by the way why is there an escape char in a csv parser any ways?



--
This message was sent by Atlassian Jira
(v8.3.4#803005)