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From "Sebastian Nagel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (NUTCH-1767) remove special treatment of "params" in relative links
Date Sun, 27 Apr 2014 22:24:14 GMT

     [ https://issues.apache.org/jira/browse/NUTCH-1767?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sebastian Nagel updated NUTCH-1767:
-----------------------------------

    Attachment: test_nutch_1767-2.html
                test_nutch_1767-1.html

Test documents. Afaics, firefox follows RFC 3986 (and not RFC 1808).

> remove special treatment of "params" in relative links
> ------------------------------------------------------
>
>                 Key: NUTCH-1767
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1767
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 1.8, 2.2.1
>            Reporter: Sebastian Nagel
>            Priority: Minor
>             Fix For: 2.3, 1.9
>
>         Attachments: test_nutch_1767-1.html, test_nutch_1767-2.html
>
>
> [RFC 1808|http://www.ietf.org/rfc/rfc1808.txt] specified that path elements of URLs may
contains so-called params startet by ";", e.g. ";type=a". If the base URL contains a path
param while the link target does not, params are transferred to the target:
> {quote}
> Step 5: 
>  a) if the embedded URL's <params> is non-empty, we skip to
>      step 7; otherwise, it inherits the <params> of the base URL (if any)
> {quote}
> This behaviour has been implemented with NUTCH-436. Later (NUTCH-1115) it had been made
optional and configurable by property {{parser.fix.embeddedparams}}. NUTCH-797 made the changes
of both issues inactive for 1.x (not applied to 2.x) with reference to RFC 3986.
> [RFC 3986|http://tools.ietf.org/html/rfc3986] which obsoletes RFC 1808 does not mention
params and examples given in sect. 5.4. "Reference Resolution Examples" contradict RFC 1808.
Also [Wikipedia|http://en.wikipedia.org/w/index.php?title=URI_scheme&oldid=604656593]
states:
> {quote}
> Historically, each segment was specified to contain parameters separated from it using
a semicolon (";"), though this was rarely used in practice and current specifications allow
but no longer specify such semantics.
> {quote}
> Accordingly, any special treatment of "params" in relative links should be removed from
Nutch. At a first glance, this would include:
> * 2.x parse-html and parse-tika
> ** remove fixEmbeddedParams(...)
> ** change unit tests to follow examples from RFC 3986
> * 1.x
> ** remove unused fixEmbeddedParams(...) from parse-html
> ** remove property {{parser.fix.embeddedparams}} from nutch-default.xml



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