[ 
https://issues.apache.org/jira/browse/NUTCH-1870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Sebastian Nagel updated NUTCH-1870:
-----------------------------------
    Attachment: NUTCH-1870-trunk-v4.patch

New patch including:
* load all configuration files from class path
* load once initially via setConf(conf)
* made {{javax.xml.transform.Transformer}} thread-local
* renamed ParseTechnicalTests to make them run by ant (-> TestParseTechnical)

Further / open points:
* verified  (I was wrong in my last comment): it's possible to fill fields with 
multiple values if an expression matches more than once
* in the transformer file (cf. src/plugin/parse-xsl/: conf/documents.xsd resp. 
sample/sample1/transformer_book.xsl) there is "documents" node containing an 
open number of "document" nodes. This could also be used to (optionally) add 
multiple "subdocuments" (cf. NUTCH-443).
* selection of root node via XPath "html" has one disadvantage: it makes it 
impossible to use parse-xsl for make pure XML documents indexable and -- 
extract documents and fields (key-value pairs) from arbitrary XML. Also the 
special treatment of Neko (parse-html) and tagsoup (parse-tika) via 
lower/upper-cased tag names could be needless after NUTCH-1592.
* there is still some extra debugging code (saveDOMOutput(), 
displayMemoryUsage, timing) which could be moved to some general utility 
classes, it could be useful also somewhere else.
* ev. we should simplify how the parsers are called in AbstractCrawlTest: just 
call ParseUtil.parse(). This would also make the parse-xsl tests sensitive to 
changes in parse-html (or parse-tika).


> Generic xsl parser plugin
> -------------------------
>
>                 Key: NUTCH-1870
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1870
>             Project: Nutch
>          Issue Type: New Feature
>          Components: indexer, parser
>    Affects Versions: 1.9
>            Reporter: Albinscode
>             Fix For: 1.11
>
>         Attachments: NUTCH-1870-trunk-v3.patch, NUTCH-1870-trunk-v4.patch, 
> nutch-site.xml, xsl-parse-plugin.patch, xsl-parse-plugin2.patch
>
>
> The aim of this plugin is to use XSLT to extract metadata from HTML DOM 
> structures.
> | Your Data | --> | Parse-html plugin  or TIKA plugin | --> | DOM structure | 
> --> |XSLT plugin |
>                   
>                   
> The main advantage is that:
> - You won't have to produce any java code, only XSLT and configuration
> - It can process DOM structure from DocumentFragment (@see NekoHtml and @see 
> TagSoup)
> - It is HtmlParseFilter plugin compatible and can be plugged as any other 
> plugin (parse-js, parse-swf, etc...)
> This topic has been discussed on 
> http://www.mail-archive.com/dev%40nutch.apache.org/msg15257.html



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