Lucene Searcher 仅返回一个匹配结果

发布于 2024-11-18 07:40:53 字数 694 浏览 0 评论 0原文

我的搜索文本为“ma”，我有两个 lucene 文档，其中的文本为 ma。但作为回报我只得到一份文件。

下面是代码：

//adding deocument 
document.Add(new Field("Text",text,Field.Store.YES, Field.Index.TOKENIZED));

//search logic :

IndexReader reader = IndexReader.Open(GetFileInfo(indexName));
//create an index searcher that will perform the search
IndexSearcher searcher = new IndexSearcher(reader);

//List of ID
List<string> searchResultID = new List<string>();

//build a query object
QueryParser parser = new QueryParser("Text", analyzer);
parser.SetAllowLeadingWildcard(true);
Query query = parser.Parse(searchText);
//execute the query
Hits hits = searcher.Search(query);

原文

My search text goes as "ma" and i have two lucene document which have ma as the text in it. But in return i only get one document.

Below is the code :

//adding deocument 
document.Add(new Field("Text",text,Field.Store.YES, Field.Index.TOKENIZED));

//search logic :

IndexReader reader = IndexReader.Open(GetFileInfo(indexName));
//create an index searcher that will perform the search
IndexSearcher searcher = new IndexSearcher(reader);

//List of ID
List<string> searchResultID = new List<string>();

//build a query object
QueryParser parser = new QueryParser("Text", analyzer);
parser.SetAllowLeadingWildcard(true);
Query query = parser.Parse(searchText);
//execute the query
Hits hits = searcher.Search(query);

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萌酱 2024-11-25 07:40:53

也许您可以使用luke。它是一个有用的诊断工具，可以显示现有 Lucene 索引的内容并执行其他有趣的操作。我自己没有使用过它，所以我不确定，但我认为它可能会帮助你调试这个问题。祝你好运！

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梦初启 2024-11-25 07:40:53

我能够解决我的问题：

索引编写器只能创建一次。如果不创建新的索引编写器，您可以检查索引是否存在。例如：

//IndexWriter 构造函数的最后一个参数 bool 表示您是否要创建一个 newIndexWriter

IndexWriter writer = new IndexWriter(GetFileInfo(indexName), analyzer, true);

在添加新文档时，您必须检查索引是否存在，如果存在，则只需将 bool 参数传递为对 IndexWriter 构造函数设置 false：

IndexWriter  writer = new IndexWriter(GetFileInfo(indexName), analyzer, false);
 writer.AddDocument(CreateDocument(Id, text, dateTime));
 writer.Optimize();
 writer.Close();

I was able to solve my issue :

Index Writer must be created only once.You can check whether the index exits or not if not you create an new IndexWriter . for eg :

//The last parameter bool of an IndexWriter Contructor which says that you want to create an newIndexWriter or not

IndexWriter writer = new IndexWriter(GetFileInfo(indexName), analyzer, true);

On adding the new Document you must perform an check whether index exists or not , if it exists , then just pass bool param as false to the IndexWriter constructor:

IndexWriter  writer = new IndexWriter(GetFileInfo(indexName), analyzer, false);
 writer.AddDocument(CreateDocument(Id, text, dateTime));
 writer.Optimize();
 writer.Close();

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