问题描述
我与Lucene.net玩弄尝试并获得如何实现它在我的应用程序句柄。
I am playing around with Lucene.net to try and get a handle of how to implement it in my application.
我有以下代码
.....
// Add 2 documents
var doc1 = new Document();
var doc2 = new Document();
doc1.Add(new Field("id", "doc1", Field.Store.YES, Field.Index.ANALYZED));
doc1.Add(new Field("content", "This is my first document", Field.Store.YES, Field.Index.ANALYZED));
doc2.Add(new Field("id", "doc2", Field.Store.YES, Field.Index.ANALYZED));
doc2.Add(new Field("content", "The big red fox jumped", Field.Store.YES, Field.Index.ANALYZED));
writer.AddDocument(doc1);
writer.AddDocument(doc2);
writer.Optimize();
writer.Close();
// Search for doc2
var parser = new QueryParser(Lucene.Net.Util.Version.LUCENE_29, "content", new StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_29));
var query = parser.Parse("big abcdefg test1234");
var searcher = new IndexSearcher(indexDirectory, true);
var hits = searcher.Search(query);
Assert.AreEqual(1, hits.Length());
var document = hits.Doc(0);
Assert.AreEqual("doc2", document.Get("id"));
Assert.AreEqual("The big red fox jumped", document.Get("content"));
这个测试通过,这dismays我有点。我认为,这意味着Lucene.Net用途或术语,而不是之间的搜索,但我无法找到如何实际执行和搜查任何信息。
This test passes, which dismays me a bit. I assume this means that Lucene.Net uses OR for searches between terms and not an AND, but I can't find any information on how to actually perform an AND search.
最终的结果我打算是,如果有人搜索马修·安德森我不希望它弹出引用马修Doe的文档,这是不以任何方式,形状或形式有关。
The end result I am going for is if someone searches for "Matthew Anderson" I don't want it to bring up documents that refer to "Matthew Doe" , as that isn't relevant in any way, shape or form.
推荐答案
一个。如果您需要的所有单词是一个文件,但不要求的话是连续和顺序指定:查询
A. If you require all words to be in a document but don't require the words to be consecutive and in the order you specify: The query
+big +red
匹配
* the big red fox jumped
* the red big fox jumped
* the big fast red fox jumped
但不匹配
* the small red fox jumped
乙。如果你想匹配一个短语(即所需的一切话,话必须是连续的,并在指定的顺序),而不是:查询
B. If you want to match a phrase (i.e. all words required; the words have to be consecutive and in the order specified) instead: The query
+"big red"
匹配
* the big red fox jumped
但不匹配
* the red big fox jumped
* the big fast red fox jumped
* the small red fox jumped
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