[jira] [Commented] (JENA-601) Provide better support for compressed input formats

["Rob Vesse (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JENA-601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13838930#comment-13838930 ] 

Rob Vesse commented on JENA-601:
--------------------------------

It we wanted to do this we could add Apache Commons Compress as a dependency which is obviously ASLv2 licensed and would allow us to support BZip2 and LZMA compressed inputs (plus a couple more obscure formats that people are likely less fussed about).

http://commons.apache.org/proper/commons-compress/

> Provide better support for compressed input formats
> ---------------------------------------------------
>
>                 Key: JENA-601
>                 URL: https://issues.apache.org/jira/browse/JENA-601
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: RIOT
>    Affects Versions: Jena 2.11.0
>            Reporter: Rob Vesse
>
> Currently Jena has little or not support for compressed input formats.  There are the odd cases where some consideration is given e.g.
> - {{RDFLanguages.filenameToLang()}} strips off {{.gz}} extensions to help it correctly detect file types
> - HTTP responses can deal with compressed responses by virtue of Apache HttpClient
> What would be nice is to have a better strategy for handling compressed inputs.  For example having a registry of known compression extensions e.g. {{.gz}}, {{.bz2}}, {{.deflate}} which ARQ would strip off when trying to deduce format from the filename.
> It would also be useful if the various locator implementations took compression into account when opening input streams as I'm fairly sure if you asked ARQ to open a {{foo.nt.gz}} file it would just open a raw input stream and then the reading would fail.



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