Lucene对index操作

package org.lucene.index;

import java.io.File;
import java.io.IOException;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.CorruptIndexException;
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.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.util.Version;

public class IndexUtil {
    String[] ids = { "aa", "bb", "cc", "dd", "ee", "ff", "gg" };
    String[] emails = { "aaa@lucenes.com", "bbb@lucenes.com",
            "ccc@lucenes.com", "ddd@lucenes.com", "eee@lucenes.com",
            "fff@lucenes.com", "ggg@lucenes.com" };
    String[] contents = { "aaaaaaaaaaaaaa", "bbbbbbbbbbbbbb",
            "ccccccccccccccc", "dddddddddddddd", "eeeeeeeeeeeeee",
            "fffffffffffffff", "gggggggggggggg" };
    String[] names = { "zhangsan", "lisi", "wangwu", "zhaoliu", "tianqi",
            "zhaoba", "chenjiu" };
    Integer[] attachs = { 1, 2, 5, 4, 6, 2, 3 };

    Directory directory = null;

    public IndexUtil() {
        try {
            directory = FSDirectory.open(new File(
                    "E:/luceneworkspace/Lucene2/path"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 创建索引
     */
    public void index() {
        IndexWriter indexWriter = null;
        try {
            indexWriter = new IndexWriter(directory, new IndexWriterConfig(
                    Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
            indexWriter.deleteAll();
            Document document = null;
            for (int i = 0; i < ids.length; i++) {
                document = new Document();
                document.add(new Field("id", ids[i], Field.Store.YES,
                        Field.Index.NOT_ANALYZED_NO_NORMS));
                document.add(new Field("email", emails[i], Field.Store.YES,
                        Field.Index.NOT_ANALYZED));
                document.add(new Field("content", contents[i], Field.Store.NO,
                        Field.Index.ANALYZED));
                document.add(new Field("name", names[i], Field.Store.YES,
                        Field.Index.NOT_ANALYZED));
                indexWriter.addDocument(document);
            }
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (indexWriter != null)
                    indexWriter.close();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 删除索引
     */
    public void delete() {
        IndexWriter indexWriter = null;
        try {
            indexWriter = new IndexWriter(directory, new IndexWriterConfig(
                    Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
            indexWriter.deleteDocuments(new Term("id", "aa"));
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (indexWriter != null)
                    indexWriter.close();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 恢复索引
     */
    public void undelete() {
        IndexReader indexReader = null;
        try {
            indexReader = IndexReader.open(directory, false);
            indexReader.undeleteAll();
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (indexReader != null)
                    indexReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     *  清空回收站索引
     */
    public void clear(){
        IndexWriter indexWriter = null;
        try {
            indexWriter = new IndexWriter(directory, new IndexWriterConfig(
                    Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
            indexWriter.forceMergeDeletes();
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (indexWriter != null)
                    indexWriter.close();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    
    /**
     * 更新索引
     */
    public void update(){
        IndexWriter indexWriter = null;
        try {
            indexWriter = new IndexWriter(directory, new IndexWriterConfig(
                    Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
            Document doc=new Document();
            doc.add(new Field("id", "hh", Field.Store.YES,
                    Field.Index.NOT_ANALYZED_NO_NORMS));
            doc.add(new Field("email", emails[2], Field.Store.YES,
                    Field.Index.NOT_ANALYZED));
            doc.add(new Field("content", contents[3], Field.Store.NO,
                    Field.Index.ANALYZED));
            doc.add(new Field("name", names[4], Field.Store.YES,
                    Field.Index.NOT_ANALYZED));
            indexWriter.updateDocument(new Term("id","aa"), doc);
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (indexWriter != null)
                    indexWriter.close();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    
    public void query() {
        try {
            IndexReader indexReader = IndexReader.open(directory);
            System.out.println("maxDoc:" + indexReader.maxDoc());
            System.out.println("numDocs:" + indexReader.numDocs());
            System.out.println("numDeleteDocs:"+indexReader.numDeletedDocs());
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}