Shenqihua & Shen,
If you use "TermQuery" than you should give the search string as it is stored
in the index(mostly lowercase).
But with "QueryParser", you can get the expected results.
I run that sample code and got the following results(see the use of Analyzers).
//Index
IndexWriter wr = new IndexWriter("IndexAAA", new
Lucene.Net.Analysis.Standard.StandardAnalyzer(), true); //<--
Document doc = new Document();
Field f = new Field("Field1", "Mobile", Field.Store.YES,
Field.Index.TOKENIZED);
doc.Add(f);
wr.AddDocument(doc);
wr.Close();
//Search
string[] queries = new string[] { "Mobile", "mobile", "MoBIle" };
for (int i = 0; i < queries.Length; i++)
{
IndexSearcher s = new IndexSearcher("IndexAAA");
QueryParser parser = new QueryParser("Field1", new
Lucene.Net.Analysis.Standard.StandardAnalyzer()); //<--
Query q = parser.Parse(queries[i]);
Hits hits = s.Search(q);
richTextBox1.AppendText(hits.Length().ToString() + " hits
found\n");
}
Output:
1 hits found
1 hits found
1 hits found
DIGY
-----Original Message-----
From: Shen Koffer (JIRA) [mailto:[EMAIL PROTECTED]
Sent: Monday, June 18, 2007 12:19 PM
To: [email protected]
Subject: [jira] Commented: (LUCENENET-41) querystring is case-sensitive?
[
https://issues.apache.org/jira/browse/LUCENENET-41?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12505744
]
Shen Koffer commented on LUCENENET-41:
--------------------------------------
Thanks for your informaiton. I tested the following analyzer:
1. StandardAnalyzer/ SimpleAnalyzer/ StopAnalyzer
Re: QueryString should be in lower case
2. WhitespaceAnalyzer
Re: QueryString As is
3. KeywordAnalyzer
Re: Neither works
Is there any analyzer, which can handle "Mobile", "mobile", "MoBIle", etc?
> querystring is case-sensitive?
> ------------------------------
>
> Key: LUCENENET-41
> URL: https://issues.apache.org/jira/browse/LUCENENET-41
> Project: Lucene.Net
> Issue Type: Bug
> Environment: OS: windows XP SP2; .Net 2005; Lucene.net 2.0; IBM
> laptop T42
> Reporter: Shen Koffer
> Priority: Minor
>
> I have one text file: one.txt. In this file, I put only one line of data:
> Mobile.
> The indexing process completes without any error.
> In the search code, I created a new query like this,
> Query query = new TermQuery(new Term("Content", queryString));
> The queryString passed in is "Mobile".
> With this, I can NOT search out any result.
> But if I change the queryString to "mobile" ( Notice: all in lower case).
> I can get the expected result.
> The defect is when the user try to search some word, he should input the word
> in lower case, rather than as-is.
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