Text Search Operators (Self-Managed Deployments)文本搜索运算符（自我管理部署）

Query Framework查询框架

Use the $text query operator to perform text searches on a collection with a text index.使用$text查询运算符对具有text索引的集合执行文本搜索。

$text tokenizes the search string using whitespace and most punctuation as delimiters, and perform a logical OR of all such tokens in the search string.$text使用空格和大多数标点符号作为分隔符对搜索字符串进行标记，并对搜索字符串中的所有此类标记执行逻辑OR。

For example, you could use the following query to find all stores containing any terms from the list "coffee", "shop", and "java" in the stores collection:例如，您可以使用以下查询查找包含stores集合中“coffee”、“shop”和“java”列表中任何术语的所有商店：

db.stores.find( { $text: { $search: "java coffee shop" } } )

Use the $meta query operator to obtain and sort by the relevance score of each matching document. For example, to order a list of coffee shops in order of relevance, run the following:使用$meta查询运算符获取每个匹配文档的相关性得分并进行排序。例如，要按相关性顺序订购咖啡店列表，请运行以下命令：

db.stores.find(
   { $text: { $search: "coffee shop cake" } },
   { score: { $meta: "textScore" } }
).sort( { score: { $meta: "textScore" } } )

For more information on the $text and $meta operators, including restrictions and behavior, see:有关$text和$meta运算符的更多信息，包括限制和行为，请参阅：

• $text Reference Page参考页
• $text Query Examples查询示例
• $meta as a projection operator$meta作为投影运算符

Aggregation Pipeline聚合管道

When working with aggregation pipelines, use $match with a $text expression to execute a text search query. 使用聚合管道时，使用$match和$text表达式来执行文本搜索查询。To sort the results in order of relevance score, use the $meta aggregation operator in the $sort stage.要按相关性得分对结果进行排序，请在$sort阶段使用$meta聚合运算符。

For more information and examples, see $text in the Aggregation Pipeline on Self-Managed Deployments.有关更多信息和示例，请参阅自我管理部署聚合管道中的$text。

For data hosted on MongoDB, MongoDB Search provides the $search aggregation stage to perform full-text search on your collections.对于托管在MongoDB上的数据，MongoDB搜索提供了$Search聚合阶段，可以对集合执行全文搜索。