全文检索lucene学习笔记(二)

package com.lucene.index;

import java.io.IOException;

import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;

public class IndexDeleter {

public static void main(String[] args) throws CorruptIndexException, IOException {

IndexReader reader = IndexReader.open("C://test//index");

System.out.println(reader.maxDoc());
System.out.println(reader.numDocs());
System.out.println(reader.isDeleted(1));

reader.deleteDocument(1);

System.out.println(reader.maxDoc());
System.out.println(reader.numDocs());
System.out.println(reader.isDeleted(1));
System.out.println(reader.hasDeletions());

reader.undeleteAll();
reader.flush();
reader.close();
}
}

package com.lucene.index;

import java.io.IOException;

import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;

public class IndexDeleter {

public static void main(String[] args) throws CorruptIndexException, IOException {

IndexReader reader = IndexReader.open("C://test//index");

Term term = new Term("contents", "ERROR".toLowerCase());
reader.deleteDocuments(term);

reader.flush();
reader.close();
}
}