Scala操作MongoDB

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Scala操作MongoDB

 

 

// Maven

<dependencies>    <dependency>        <groupId>org.mongodb</groupId> <artifactId>casbah</artifactId> <version>3.1.1</version>    </dependency></dependencies>

 

 

// Sbt

libraryDependencies += "org.mongodb" %% "casbah" % "3.1.1"

 

 

// Lib

 import com.mongodb.casbah.Imports._

 

 

// CONNECTION

//val mongoClient= MongoClient("localhost", 27017)val uri = MongoClientURI("mongodb://localhost:27017/")val mongoClient = MongoClient(uri)

 

 

// USE COLLECTION

val db = mongoClient("test")db.collectionNamesval coll = db("abc")

// INSERT

val user1 = MongoDBObject("name" -> "user1", "email" -> "[email protected]")val user2 = MongoDBObject("name" -> "user2", "email" -> "[email protected]")val user3 = MongoDBObject("name" -> "user3", "email" -> "[email protected]")coll.insert(user1)coll.insert(user2)coll.insert(user3)

 

// SELECT

coll.count() //讀取總記錄數coll.find().foreach(println)val query1 =MongoDBObject("name" -> "user1")coll.findOne(query1)

 

// UPDATE

val update1 = MongoDBObject("email" -> "[email protected]")val result1 = coll.update(query1, update1)

 

// upsert=true,如果不存在就insert// val result = coll.update( query, update, upsert=true )

 

// 批次更新val query3 = MongoDBObject("name" -> "user2", "email" -> "[email protected]")val update3 = $set("email" -> "[email protected]")val result3 = coll.update(query3, update3, multi=true)

 

 

// DELETE

val query2 = MongoDBObject("name" -> "user2" )val result2 = coll.remove(query2)

 

 

 

 

   

Scala操作MongoDB