Lucene 4.4 根据Int类型字段删除索引

来源：互联网发布：ae cs6 mac 破解编辑：程序博客网时间：2024/06/07 21:05
1、方法一，通过Term删除Term构造中没有，Int类型需要转换成Lucene自带的类BytesRef 。        /**     * 根据商品ID删除索引文件     * @param id     */    public void deleteDocument(int id)    {;        File file = new File("E://index");        IKAnalyzer analyzer = new IKAnalyzer();        IndexWriterConfig indexWriterConfig = new IndexWriterConfig(Version.LUCENE_44, analyzer);        IndexWriter indexWriter = null;        Directory directory;        try {            directory = FSDirectory.open(file);            // 创建 IndexWriter            indexWriter = new IndexWriter(directory, indexWriterConfig);     BytesRef bytes = new BytesRef(NumericUtils.BUF_SIZE_INT);                    NumericUtils.intToPrefixCoded(id, 0, bytes);                    Term term = new Term(field, bytes);                       indexWriter.deleteDocuments(term);            indexWriter.close();                       } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }                           }2.方法二，使用NumericRangeQuery/**     * 根据商品ID删除索引文件     * @param id     */    public void deleteDocument(int id)    {;        File file = new File("E://index");        IKAnalyzer analyzer = new IKAnalyzer();        IndexWriterConfig indexWriterConfig = new IndexWriterConfig(Version.LUCENE_44, analyzer);        IndexWriter indexWriter = null;                Directory directory;        try {             directory = FSDirectory.open(file);             // 创建 IndexWriter             indexWriter = new IndexWriter(directory, indexWriterConfig);     Query numbericRangeQuery = NumericRangeQuery.newIntRange("ID",id-1, id+1, false, false);                         indexWriter.deleteDocuments(numbericRangeQuery);             indexWriter.close();                         } catch (IOException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();             }                          }
0 0