lucene刪除索引中的Document示例

2021-06-01 00:40:40 字數 1887 閱讀 1613

下面的例項是刪除索引中的document的例項

package com.cn;


import org.apache.lucene.analysis.standard.standardanalyzer;


import org.apache.lucene.document.document;


import org.apache.lucene.document.field;


import org.apache.lucene.index.indexreader;


import org.apache.lucene.index.indexwriter;


import org.apache.lucene.index.indexwriterconfig;


import org.apache.lucene.index.term;


import org.apache.lucene.search.indexsearcher;


import org.apache.lucene.search.query;


import org.apache.lucene.search.termquery;


import org.apache.lucene.store.directory;


import org.apache.lucene.store.ramdirectory;


import org.apache.lucene.util.version;


public class index ;


string  unindexed = ;


string  unstored = ;


string  text = ;


directory directory = new ramdirectory();


indexwriter indexwriter = new indexwriter(directory,new indexwriterconfig(version.lucene_34, new standardanalyzer(version.lucene_34)));


for(int i = 0;i < ids.length;i++)


indexwriter.close();


indexsearcher indexsearcher = new indexsearcher(directory);


term term = new term("contents","lots");


query query = new termquery(term);


int hitcount = indexsearcher.search(query, 10).totalhits;


system.out.println(hitcount);


indexwriter = new indexwriter(directory,new indexwriterconfig(version.lucene_34, new standardanalyzer(version.lucene_34)));


indexwriter.deletedocuments(new term("id","1"));


indexwriter.close();


indexreader indexreader = indexreader.open(directory);


system.out.println(indexreader.numdocs());


indexreader.close();


indexsearcher = new indexsearcher(directory);


system.out.println(indexsearcher.search(query, 10).totalhits);


}	}

輸出結果： 21

1

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