[teiid-issues] [JBoss JIRA] (TEIID-2896) Add TEXTTABLE function capabilities to interpret fixed width data file content that is shorter than the defined line length

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-2896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973816#comment-12973816 ] 

Steven Hawkins commented on TEIID-2896:
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> So if you have an example of how you accomplished this, it would be appreciated.
> A column SELECTOR is not valid with fixed width parsing.

Sorry I wasn't paying full attention.  What are referring to by this?  To clarify there are two selectors, a row selector and a column selector.  Row selectors are supported in fixed width, but yes column selectors are not.  In fixed width column selectors do not make general sense unless all rows have the same data format.  See also TEIID-2898

> As for the test case, you add null to the end of the line, but in the sample file attached, the actual null column is in the middle.

I'm not sure what you mean.

> and part of the problem with the sample is, each type has a different fixed width.

Generally you want only a single type, so you would use a row selector for only that type.

> Add TEXTTABLE function capabilities to interpret fixed width data file content that is shorter than the defined line length
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: TEIID-2896
>                 URL: https://issues.jboss.org/browse/TEIID-2896
>             Project: Teiid
>          Issue Type: Enhancement
>          Components: Query Engine
>            Reporter: Van Halbert
>            Assignee: Steven Hawkins
>             Fix For: 8.7
>
>         Attachments: sample, TEIID-2896.patch
>
>
> Current behavior is that data lines too short to fit a fixed width data interpretation produces an error such as "Error: Text parse error: Fixed width line width 35 is smaller than the expected 60 on text line 1 in file:/tmp/file.csv.". The customer's use case is interpreting data files from another application which bundles multiple types of data along with additional descriptive info/metadata about the data contained within the file. As the error is thrown if any lines after the first interpreted line are shorter than the summed value of the fixed width columns, they are unable to query the file. The customer wishes for the ERROR to be suppressed and the query to return the data independent of whether it fits the fixed width criteria and potentially to be able to filter the data being retrieved.



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