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| <h1 title="Package" class="title">Package org.apache.nutch.collection</h1> |
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| Subcollection is a subset of an index.</div> |
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| <p>See: <a href="#package.description">Description</a></p> |
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| <td class="colFirst"><a href="../../../../org/apache/nutch/collection/Subcollection.html" title="class in org.apache.nutch.collection">Subcollection</a></td> |
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| <div class="block">SubCollection represents a subset of index, you can define url patterns that |
| will indicate that particular page (url) is part of SubCollection.</div> |
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| <h2 title="Package org.apache.nutch.collection Description">Package org.apache.nutch.collection Description</h2> |
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| Subcollection is a subset of an index. Subcollections are defined |
| by urlpatterns in form of white/blacklist. So to get the page into |
| subcollection it must match the whitelist and not the blacklist. |
| </p> |
| <p> |
| Subcollection definitions are read from a file subcollections.xml |
| and the format is as follows (imagine here that you are crawling all |
| the virtualhosts from apache.org and you wan't to tag pages with |
| url pattern "http://lucene.apache.org/nutch" and http://wiki.apache.org/nutch/ |
| to be part of subcollection "nutch", this allows you to later search |
| specifically from this subcollection) |
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| <p/> |
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| <pre> |
| <?xml version="1.0" encoding="UTF-8"?> |
| <subcollections> |
| <subcollection> |
| <name>nutch</name> |
| <id>lucene</id> |
| <whitelist>http://lucene.apache.org/nutch</whitelist> |
| <whitelist>http://wiki.apache.org/nutch/</whitelist> |
| <blacklist /> |
| </subcollection> |
| </subcollections> |
| </pre> |
| </p> |
| <p>Despite of this configuration you still can crawl any urls |
| as long as they pass through your global url filters. (note that |
| you must also seed your urls in normal nutch way) |
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