问题描述
我已在Lucene.Net过滤器以限制搜索的结果。我遇到一个很奇怪的问题。该过滤器不与文本值工作，但与数值工作
I have made a filter in Lucene.Net to limit the result of the search. I am encountering a very strange issue. The filter is not working with Text Values but working with number values.
例如：
如果我制造过滤与数值类似下面。它可以正常使用。
If I am making a filter with Number values something like below. It is working perfectly.
String field = "id";
Filter LE= new QueryWrapperFilter(new TermQuery( new Term(field, "1234567")));
indexSearcher.Search(QueryMaker(searchString, searchfields), LE, coll);
不过，如果我得到包含文本
However, if I give a value containing Text
String field = "id";
Filter LE = new QueryWrapperFilter(new TermQuery(new Term(field, "ZZZOCB9X9Y")));
indexSearcher.Search(QueryMaker(searchString, searchfields), LE, coll);
这是失败的。结果是不显示任何记录。
it is failing. The result is not displaying any records.
有人可以解释我的问题。另外，我还测试了无数次，使这一说法。我看过一些论坛的期限查询Lucene的版本低于3将可能有这个问题。不过，我已经改变了版本为3.0.3，但错误依然存在。我很喜欢我的程序工作的过滤器。否则，我将不得不从Lucene的移开，寻找别的东西。
Can somebody explain me the issue. Also, I have tested it numerous times to make this claim. I have read on some forums that the Term Query in Lucene versions below 3 will probably have this issue. However, I have changed the version to 3.0.3 but error still persists. I badly need the filter in my program to work. Otherwise I will have to move away from Lucene and find something else.
推荐答案
StandardAnalyzer 将小写的所有字符在的TokenStream
StandardAnalyzer will lowercase all the characters in your TokenStream.
试试这个：
Filter LE = new QueryWrapperFilter(new TermQuery(new Term(field, "ZZZOCB9X9Y".ToLowerInvariant())));
这篇关于为什么不与Lucene.Net文本/字符串值过滤器的工作？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！