NET中MongoDB中的全文本搜索 [英] Full text search in mongodb in .net
问题描述
我必须在.net mvc中的mongodb的特定集合中的所有文档中搜索内容.我已经尝试过像这里一样成功创建mongodb shell的索引.
I have to search contents in all documents in particular collection of mongodb in .net mvc . I have tried with mongodb shell by creating index successfully like here .
db.collection_name.createIndex( { subject: "text" } )
db.collection_name.find( { $text: { $search: "search_word" } } )
工作正常.但是当我将其放在.net中时,这给了我错误.我用谷歌搜索,并得到以下索引的解决方案.
It works fine . but when i put it in .net that gives me error . I googled it and got following solution for indexing .
collection.EnsureIndex(new IndexKeysBuilder().Ascending("subject"));
现在如何运行此查询db.collection_name.find( { $text: { $search: "coffee" } } )
.
我正在按照以下方式在.net中尝试.
I am trying in .net as following way .
collection.CreateIndex("subject":"text");
var query = collection.Find({ $text: { $search: "coffe" }});
但是我在第一行出现错误将文本表示为一系列unicode ....语法错误"
but I am getting error on first line "represents text as series of unicode ....syntax error "
第二行错误没有给出与所需形式参数相对应的参数"和意外字符$".
2nd line error "There is no argument given that corresponds to required formal parameters " And "unexpected character $ ".
任何建议将不胜感激.
any suggestion will be appreciated .
推荐答案
我可以使用以下命令创建文本索引:
I could create text indexes with this command:
collection.Indexes.CreateOne(Builders<searchFileByAuthor>.IndexKeys.Text(x=>x.subject));
然后我可以这样查询索引:
And than i could query index this way:
collection.Find(Builders<searchFileByAuthor>.Filter.Text("coffe")).ToList();
searchFileByAuthor
只是我的带有主题字段的假课程:
searchFileByAuthor
is just my fake class with subject field:
public class searchFileByAuthor
{
public int Id { get; set; }
public string subject { get; set; }
}
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