have you made an entry in src/plugin/build.xml file for your plugin? On Thu, Jun 11, 2009 at 6:35 AM, Rahul Thathoo <[email protected]>wrote:
> Hi All, > I am trying to work on the example for building a plugin for nutch here: > http://wiki.apache.org/nutch/WritingPluginExample-0.9 > > Using nutch-0.9 on Windows XP. > > Now, i have set up things exactly as it is mentioned, and hence i actually > see somethings working - like the HTML Parser Extension is able to grab the > contents of the recommended meta tag and add them to the document being > parsed. The indexing filter extension also works in that it is able to add > the field 'recommended' to the lucene text index with the content of the > meta-tag. I use Luke to make sure the content within the meta tag is in the > new recommended field. I also use Luke to query on that content and it > works. Now the query filter doesnt really do what it is supposed to. My > Query Filter code looks like : > > package org.apache.nutch.parse.recommended; > > import org.apache.nutch.searcher.FieldQueryFilter; > import java.util.logging.Logger; > > // Commons imports > import org.apache.commons.logging.Log; > import org.apache.commons.logging.LogFactory; > import org.apache.hadoop.conf.Configuration; > > public class RecommendedQueryFilter extends FieldQueryFilter { > private static final Log LOG = > LogFactory.getLog(RecommendedParser.class.getName()); > > public RecommendedQueryFilter() { > super("recommended", 5f); > LOG.info("Added a recommended query"); > } > > public void setConf(Configuration conf) { > super.setConf(conf); > } > } > > And my nutch-site.xml looks like: > <property> > <name>plugin.includes</name> > > > > <value>recommended|nutch-extensionpoints|protocol-http|urlfilter-regex|parse-(text|html|js)|index-basic|query-(basic|site|url|recommendedSearcher)|summary-basic|scoring-opic|urlnormalizer-(pass|regex|basic)</value> > </property> > > <property> > <name>searcher.dir</name> > <value>C:\nutch-0.9\yatry1\</value> > </property> > > And my plugin.xml file looks like: > > <?xml version="1.0" encoding="UTF-8"?> > <plugin > id="recommended" > name="Recommended Parser/Filter" > version="0.0.1" > provider-name="nutch.org"> > > <runtime> > <!-- As defined in build.xml this plugin will end up bundled as > recommended.jar --> > <library name="recommended.jar"> > <export name="*"/> > </library> > </runtime> > > <!-- The RecommendedParser extends the HtmlParseFilter to grab the > contents of > any recommended meta tags --> > <extension id="org.apache.nutch.parse.recommended.recommendedfilter" > name="Recommended Parser" > point="org.apache.nutch.parse.HtmlParseFilter"> > <implementation id="RecommendedParser" > > class="org.apache.nutch.parse.recommended.RecommendedParser"/> > </extension> > > <!-- TheRecommendedIndexer extends the IndexingFilter in order to add the > contents > of the recommended meta tags (as found by the RecommendedParser) to > the lucene > index. --> > <extension id="org.apache.nutch.parse.recommended.recommendedindexer" > name="Recommended identifier filter" > point="org.apache.nutch.indexer.IndexingFilter"> > <implementation id="RecommendedIndexer" > > class="org.apache.nutch.parse.recommended.RecommendedIndexer"/> > </extension> > > <!-- The RecommendedQueryFilter gets called when you perform a search. It > runs a > search for the user's query against the recommended fields. In > order to get > add this to the list of filters that gets run by default, you have > to use > "fields=DEFAULT". --> > <extension id="org.apache.nutch.parse.recommended.recommendedSearcher" > name="Recommended Search Query Filter" > point="org.apache.nutch.searcher.QueryFilter"> > <implementation id="RecommendedQueryFilter" > > class="org.apache.nutch.parse.recommended.RecommendedQueryFilter"> > <parameter name="fields" value="recommended"/> > </implementation> > </extension> > </plugin> > > I build nutch using ant and deploy a new war file - after making my > changes. > But i am running out of ideas on what could be possibly wrong. Any ideas or > clues worth exploring would be greatly appreciated. > > thanks > rahul > -- Ankur Garg CDAC Noida Anusandhan Bhawan Sec-62, Noida Mob. 9968274797 अँकुर गर्ग प्रगत संगणन विकास केंद्र अनुसन्धान भवन सेक्टर-६२, नॉएडा मोबाइल नंबर - ९९६८२७४७९७
