XMLParser is configurable plugin. It use XPath and namespaces to do the mapping
between the XML elements and Lucene fields.
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Key: NUTCH-185
URL: http://issues.apache.org/jira/browse/NUTCH-185
Project: Nutch
Type: New Feature
Components: fetcher, indexer
Versions: 0.7.2-dev
Environment: OS Independent
Reporter: Rida Benjelloun
XMLParser is configurable plugin. It use XPath and namespaces to do the mapping
between the XML elements and Lucene fields.
Informations :
1- Copy "xmlparser-conf.xml" to the nutch/conf dir
2- To index your custom XML file, you have to modify the "xmlparser-conf.xml".
This parser uses namespaces and XPATH to parse XML content
The config file do the mapping between the XML noeds (using XPATH) and lucene
field.
Example : <field name="dctitle" xpath="//dc:title" type="Text" boost="1.4" />
3- The xmlIndexerProperties encapsulate a set of fields associated to a
namespace.
If the namespace is found in the xml document, the fields represented by the
namespace will be indexed.
Example :
<xmlIndexerProperties type="filePerDocument" namespace="
http://purl.org/dc/elements/1.1/";>
<field name="dctitle" xpath="//dc:title" type="Text" boost=" 1.4" />
<field name="dccreator" xpath="//dc:creator" type="keyword" boost=" 1.0" />
</xmlIndexerProperties>
4- It is possible to define a default namespace that will be applied when the
parser
didn't find any namespace in the document or when the namespace found in the
xml document doesn't match with the namespace defined in the
xmlIndexerProperties.
Example :
<xmlIndexerProperties type="filePerDocument" namespace="default">
<field name="xmlcontent" xpath="//*" type="Unstored" boost="1.0" />
</xmlIndexerProperties>
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