[jira] [Updated] (NUTCH-1838) Host based regex and automaton filtering

["Markus Jelsma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NUTCH-1838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Markus Jelsma updated NUTCH-1838:
---------------------------------
    Attachment: NUTCH-1838.patch

Patch attached.

> Host based regex and automaton filtering
> ----------------------------------------
>
>                 Key: NUTCH-1838
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1838
>             Project: Nutch
>          Issue Type: New Feature
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>         Attachments: NUTCH-1838.patch
>
>
> Both regex and automaton filter pass all URL's through all rules although this makes little sense if you have a lot of generated rules for many different hosts. This patch allows the users to configure specific rules for a specific host only, making filtering much more efficient.
> Each rule has an optional host field, the filter is applied for rules that have no host and for URL's that match the rule's host name.
> The following line enables host specific rules:
> {code}
> > www.example.org
> {code}
> The following line disables/resets it again:
> {code}
> <
> {code}
> full example:
> {code}
> -some generic filter
> +another generic filter
> > www.example.org
> -rule only applied to URL's of www.example.org
> +another rule only applied to URL's of www.example.org
> > www.apache.org
> -rule only applied to URL's of www.apache.org
> +another rule only applied to URL's of www.apache.org
> <
> -more generic rules
> +and another one
> {code}



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