lucene-- 更新updateDocument
Lucene并没有提供更新，这里的更新操作其实是如下两个操作的合集
先删除之后再添加
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public void update() {
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IndexWriter writer = null;
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try {
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writer = new IndexWriter(directory,
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new IndexWriterConfig(Version.LUCENE_35,new StandardAnalyzer(Version.LUCENE_35)));
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/*
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* Lucene并没有提供更新，这里的更新操作其实是如下两个操作的合集
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* 先删除之后再添加
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*/
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Document doc = new Document();
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doc.add(new Field("id","11",Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
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doc.add(new Field("email",emails[0],Field.Store.YES,Field.Index.NOT_ANALYZED));
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doc.add(new Field("content",contents[0],Field.Store.NO,Field.Index.ANALYZED));
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doc.add(new Field("name",names[0],Field.Store.YES,Field.Index.NOT_ANALYZED_NO_NORMS));
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<span style="color:#e53333;">writer.updateDocument(new Term("id","1"), doc); </span> } catch (CorruptIndexException e) {
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e.printStackTrace();
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} catch (LockObtainFailedException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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try {
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if(writer!=null) writer.close();
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} catch (CorruptIndexException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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public void updateDocument(Term term, Document doc)
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throws CorruptIndexException, IOException
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{
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ensureOpen();
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<span style="color:#e53333;"> updateDocument(term, doc, getAnalyzer());</span> }
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public void updateDocument(Term term, Document doc, Analyzer analyzer)
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throws CorruptIndexException, IOException
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{
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ensureOpen();
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try {
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boolean doFlush = false;
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boolean success = false;
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try {
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doFlush = this.docWriter.<span style="color:#003399;">updateDocument(doc, analyzer, term);</span> success = true;www.zzzyk.com
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} finally {
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。。。。
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}
你看一下lucene的源码你会惊奇的发现
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boolean addDocument(Document doc, Analyzer analyzer) throws CorruptIndexException, IOException {
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return <span style="color:#003399;">updateDocument(doc, analyzer, null);</span> }
addDocument尽然调用的和update调用的同一个方法,对于上面的的解释明白了吧。
作者：bugeasy
补充：软件开发 , Java ,
