Scala BSONCollection类代码示例

//设置package包名称以及导入依赖的类
package dao

import javax.inject.Inject
import play.api.libs.concurrent.Execution.Implicits._
import play.modules.reactivemongo.ReactiveMongoApi
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.bson._
import scala.concurrent.Future

class CounterDao @Inject()(reactiveMongoApi: ReactiveMongoApi) {

  def countersFuture: Future[BSONCollection] = reactiveMongoApi.database.map(_.collection[BSONCollection]("counters"))

  def nextId(collection: String): Future[Long] = {
    val query = BSONDocument("collection" -> collection)
    val update = BSONDocument("$inc" -> BSONDocument("counter" -> 1))
    findAndModify(query, update)
  }

  def resetId(collection: String) : Future[Long] = {
    val query = BSONDocument("collection" -> collection)
    val update = BSONDocument("$set" -> BSONDocument("counter" -> 0))
    findAndModify(query, update)
  }

  private def findAndModify(query: BSONDocument, update: BSONDocument): Future[Long] = {
    val modify = countersFuture.map(_.BatchCommands.FindAndModifyCommand.Update(
      update,
      fetchNewObject = true,
      upsert = true))

    modify.flatMap(modify =>
      countersFuture.flatMap(_.findAndModify(query, modify) map { res =>
        res.result.get.get("counter") match {
          case Some(BSONLong(id)) => id
          case Some(BSONDouble(id)) => id.toLong
          case Some(BSONInteger(id)) => id.toLong
          case _ => 1L
        }
      })
    )
  }
} 

//设置package包名称以及导入依赖的类
package webmonitor


import reactivemongo.api.collections.bson.BSONCollection
import scala.concurrent.{ ExecutionContext, Future }
import reactivemongo.api._
import reactivemongo.bson.{
BSONDocumentWriter,  Macros
}

class MongoLogger(conString: String, dbName: String, colName: String) extends MRecordLogger
{
  private implicit def personWriter: BSONDocumentWriter[MRecord] = Macros.writer[MRecord]

  private var database: Option[Future[DefaultDB]] = None

  private def getConnection(): Future[MongoConnection] = {
    val driver = MongoDriver()
    val parsedUri = MongoConnection.parseURI(conString)
    val connection = parsedUri.map(driver.connection(_))

    Future.fromTry(connection)
  }

  private def getDatabase(connection: MongoConnection)(implicit context: ExecutionContext): Future[DefaultDB] = connection.database(dbName)

  private def getCollection(db: DefaultDB): BSONCollection = db.collection(colName)

  private def insertRecord(collection: BSONCollection, mRecord: MRecord)(implicit ec: ExecutionContext): Future[Unit] = {
    collection.insert(mRecord).map(_ => {})
  }

  private def getDBLazy()(implicit executor: ExecutionContext): Future[DefaultDB] = synchronized {
    if(database.isEmpty) {
      database = Some(getConnection.flatMap(getDatabase))
    }

    database.get
  }

  def insert(record: MRecord)(implicit executor: ExecutionContext): Future[Unit] = {
    getDBLazy().flatMap(db => insertRecord(getCollection(db), record))
  }

} 

//设置package包名称以及导入依赖的类
package de.choffmeister.microserviceutils.mongodb

import akka.Done
import com.typesafe.config.ConfigFactory
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.api.{DefaultDB, MongoConnection, MongoDriver}

import scala.concurrent.{ExecutionContext, Future}

abstract class Database(val database: DefaultDB, collectionNamePrefix: String = "")(implicit ec: ExecutionContext) {
  def collection(name: String): BSONCollection = database.collection[BSONCollection](collectionNamePrefix + name)

  def init(): Future[Done]
  def clear(): Future[Done]
}

object Database {
  def open[DB <: Database](f: DefaultDB => DB)(implicit ec: ExecutionContext): Future[DB] = {
    val config = ConfigFactory.load().getConfig("mongodb")
    val uri = config.getString("uri")
    val databaseName = config.getString("database-name")

    val driver = MongoDriver()
    val mongodbUri = MongoConnection.parseURI(uri)
    val connection = Future.fromTry(mongodbUri.map(driver.connection))

    connection
      .flatMap(_.database(databaseName).map(f))
      .flatMap(db => db.init().map(_ => db))
  }
} 

//设置package包名称以及导入依赖的类
package lila.db
package paginator

import dsl._
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.api._
import reactivemongo.bson._

import lila.common.paginator.AdapterLike

final class CachedAdapter[A](
    adapter: AdapterLike[A],
    val nbResults: Fu[Int]
) extends AdapterLike[A] {

  def slice(offset: Int, length: Int): Fu[Seq[A]] =
    adapter.slice(offset, length)
}

final class Adapter[A: BSONDocumentReader](
    collection: BSONCollection,
    selector: BSONDocument,
    projection: BSONDocument,
    sort: BSONDocument,
    readPreference: ReadPreference = ReadPreference.primary
) extends AdapterLike[A] {

  def nbResults: Fu[Int] = collection.count(Some(selector))

  def slice(offset: Int, length: Int): Fu[Seq[A]] =
    collection.find(selector, projection)
      .sort(sort)
      .skip(offset)
      .cursor[A](readPreference = readPreference)
      .gather[List](length)
} 

//设置package包名称以及导入依赖的类
package io.github.bszwej.core.repository

import com.typesafe.scalalogging.LazyLogging
import io.github.bszwej.MainConfig
import io.github.bszwej.core.exception.{MongoException, MongoWriteException}
import io.github.bszwej.core.model.Tweet
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.api.commands.WriteResult
import reactivemongo.bson.BSONDocument

import scala.concurrent.{ExecutionContext, Future}


  def save(tweet: Tweet): Future[RepositorySuccess.type]

}

case object RepositorySuccess

class MongoTweetRepository(collection: Future[BSONCollection])(implicit ec: ExecutionContext) extends TweetRepository with LazyLogging with MainConfig {

  override def save(tweet: Tweet): Future[RepositorySuccess.type] = {
    val document = BSONDocument(
      "username" ? tweet.username,
      "message" ? tweet.message,
      "hashtag" ? tweet.hashtag
    )

    collection.flatMap(_.insert(document).map(_ ? RepositorySuccess)) recoverWith {
      case WriteResult.Message(message) ?
        logger.error(s"Error during storing a tweet: $message.")
        Future.failed(new MongoWriteException(message))

      case e: Exception ?
        logger.error(s"Error during storing a tweet: ${e.getMessage}.")
        Future.failed(new MongoException(e.getMessage))
    }
  }
} 

//设置package包名称以及导入依赖的类
package repository

import model.WithId
import reactivemongo.api._
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.bson.{BSONDocument, BSONDocumentReader, BSONDocumentWriter}

import scala.concurrent.Future

trait MongoDao[T <: WithId] extends MongoConnection {

  def save(collectionFuture: Future[BSONCollection], entity: T)(implicit reader: BSONDocumentWriter[T]): Future[T] =
    collectionFuture.flatMap(_.update(queryById(entity.id), entity, upsert = true).map(_ => entity))

  def deleteById(collectionFuture: Future[BSONCollection], id: String) = collectionFuture.flatMap(_.remove(queryById(id)))

  def find(collectionFuture: Future[BSONCollection], query: BSONDocument)(implicit reader: BSONDocumentReader[T]): Future[Option[T]] = {
    collectionFuture.flatMap(
      _.find(query)
        .cursor[T]()
        .collect[List](-1, Cursor.FailOnError[List[T]]())
        .map {
          case x :: xs => Some(x)
          case _       => None
        })
  }

  def findList(collectionFuture: Future[BSONCollection], query: BSONDocument)(implicit reader: BSONDocumentReader[T]): Future[List[T]] = {
    collectionFuture.flatMap(
      _.find(query)
        .cursor[T]()
        .collect[List](-1, Cursor.FailOnError[List[T]]()))
  }

  def findList(collectionFuture: Future[BSONCollection], query: BSONDocument, projection: BSONDocument)(
      implicit reader: BSONDocumentReader[T]): Future[List[T]] = {
    collectionFuture.flatMap(
      _.find(query)
        .cursor[T]()
        .collect[List](-1, Cursor.FailOnError[List[T]]()))
  }

  def queryById(id: String) = BSONDocument("_id" -> id)
} 

//设置package包名称以及导入依赖的类
package repository

import model.{FileEntity, ReceiptEntity}
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.bson.{BSONArray, BSONDocument, BSONString}
import scala.concurrent.Future

class ReceiptRepository extends MongoDao[ReceiptEntity] {

  lazy val collectionFuture: Future[BSONCollection] = dbFuture.map(db => db[BSONCollection]("receipts"))

  def save(receiptEntity: ReceiptEntity): Future[ReceiptEntity] = save(collectionFuture, receiptEntity)

  def deleteById(id: String): Future[Unit] = deleteById(collectionFuture, id).map(_ => ())

  def findForUserId(userId: String): Future[List[ReceiptEntity]] =
    findList(collectionFuture, BSONDocument("userId" -> userId)).map(_.sortWith(_.timestamp > _.timestamp))

  def findByIds(ids: Seq[String]): Future[List[ReceiptEntity]] =
    findList(collectionFuture,
             BSONDocument(
               "_id" ->
                 BSONDocument("$in" -> BSONArray(ids.map(BSONString)))))
      .map(_.sortWith(_.timestamp > _.timestamp))

  def addFileToReceipt(receiptId: String, file: FileEntity): Future[Unit] =
    collectionFuture
      .flatMap(
        _.update(
          selector = BSONDocument("_id" -> receiptId),
          update = BSONDocument(
            "$push" -> BSONDocument("files"        -> file),
            "$set"  -> BSONDocument("lastModified" -> System.currentTimeMillis())
          )
        ))
      .map(_ => ())

  def findById(id: String): Future[Option[ReceiptEntity]] = find(collectionFuture, queryById(id))

} 

//设置package包名称以及导入依赖的类
package repository

import model.{OcrEntity, OcrTextOnly}
import reactivemongo.api.Cursor
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.api.commands.WriteResult
import reactivemongo.bson.{BSONDocument, BSONRegex}

import scala.concurrent.Future

class OcrRepository extends MongoDao[OcrEntity] {

  lazy val collectionFuture: Future[BSONCollection] = dbFuture.map(db => db[BSONCollection]("ocr"))

  def save(ocrEntity: OcrEntity): Future[OcrEntity] = save(collectionFuture, ocrEntity)

  def deleteById(id: String): Future[WriteResult] = deleteById(collectionFuture, id)

  def findById(id: String): Future[Option[OcrEntity]] = find(collectionFuture, queryById(id))

  def findTextOnlyForUserId(userId: String, query: String): Future[List[OcrTextOnly]] =
    collectionFuture.flatMap(
      _.find(BSONDocument(
               "userId"      -> userId,
               "result.text" -> BSONRegex(query, "i")
             ),
             BSONDocument("result.text" -> 1))
        .cursor[OcrTextOnly]()
        .collect[List](-1, Cursor.FailOnError[List[OcrTextOnly]]()))
} 

//设置package包名称以及导入依赖的类
package com.fourstars.prodbox.repositories

import com.fourstars.prodbox.model.TrackingItem
import com.google.inject.{Inject, Singleton}
import com.typesafe.scalalogging.LazyLogging
import play.api.libs.concurrent.Execution.Implicits._
import play.api.mvc.Action
import play.modules.reactivemongo.json.ImplicitBSONHandlers._
import play.modules.reactivemongo.json._
import play.modules.reactivemongo.{MongoController, ReactiveMongoApi, ReactiveMongoComponents}
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.bson.{BSONDocument, BSONObjectID}

import scala.concurrent.Future



@Singleton
class TrackingDao @Inject()(val reactiveMongoApi: ReactiveMongoApi) extends MongoController with ReactiveMongoComponents with LazyLogging with BsonFormatters {

  def collection: BSONCollection = db.collection[BSONCollection]("persons")

  def index = Action {
    Ok("works")
  }

  def create(url: String): Future[TrackingItem] = {
    val trackingItem = new TrackingItem(Some(BSONObjectID.generate), url)
    val futureResult = collection.insert(trackingItem)
    futureResult.map {
      response =>
        logger.debug(s"response is $response")
        logger.debug(s"t is now $trackingItem")
        trackingItem
    }
  }

  def find(id: String): Future[Option[TrackingItem]] = {
    collection.find((BSONDocument("_id" -> BSONObjectID(id)))).one[TrackingItem]
  }

  def count(): Future[Int] = {
    collection.count()
  }
} 

//设置package包名称以及导入依赖的类
package lila.db
package paginator

import dsl._
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.api._
import reactivemongo.bson._

import lila.common.paginator.AdapterLike

final class CachedAdapter[A](
    adapter: AdapterLike[A],
    val nbResults: Fu[Int]
) extends AdapterLike[A] {

  def slice(offset: Int, length: Int): Fu[Seq[A]] =
    adapter.slice(offset, length)
}

final class Adapter[A: BSONDocumentReader](
    collection: BSONCollection,
    selector: BSONDocument,
    projection: BSONDocument,
    sort: BSONDocument,
    readPreference: ReadPreference = ReadPreference.primary
) extends AdapterLike[A] {

  def nbResults: Fu[Int] = collection.countSel(selector, readPreference)

  def slice(offset: Int, length: Int): Fu[List[A]] =
    collection.find(selector, projection)
      .sort(sort)
      .skip(offset)
      .cursor[A](readPreference = readPreference)
      .gather[List](length)
} 

//设置package包名称以及导入依赖的类
package com.mongo.db

import com.mongo.models._
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.bson.{BSONDocument, BSONObjectID}
import reactivemongo.api.QueryOpts
import reactivemongo.core.commands.Count
import reactivemongo.bson.{BSONDocument, BSONObjectID}
import reactivemongo.api.collections.bson.BSONCollection
import scala.concurrent.ExecutionContext

object JobManager {
  import MongoDB._

  val collection = db[BSONCollection]("jobs")

  def saveJob(jobEntity: JobEntity)(implicit ec: ExecutionContext) =
    collection.insert(jobEntity)//.map(_ => Created(jobEntity.id))

  def save(jobEntity: JobEntity)(implicit ec: ExecutionContext) =
    collection.insert(jobEntity).map(_ => Created(jobEntity.id))
  
  def findById(id: String)(implicit ec: ExecutionContext) =
    collection.find(queryById(id)).one[JobEntity]

  def deleteById(id: String)(implicit ec: ExecutionContext) =
    collection.remove(queryById(id)).map(_ => Deleted)

  def find(implicit ec: ExecutionContext) =
    collection.find(emptyQuery).cursor[BSONDocument].collect[List]()

  private def queryById(id: String) = BSONDocument("_id" -> BSONObjectID(id))

  private def emptyQuery = BSONDocument()
} 

//设置package包名称以及导入依赖的类
package org.cristal.repository.dao

import org.cristal.model.User
import reactivemongo.api.collections.bson.BSONCollection
import reactivemongo.api.commands.WriteResult
import reactivemongo.bson.BSONDocument
import scala.concurrent.{ExecutionContext, Future}
import scala.util.{Failure, Success}


trait UserDAO {
  def insert(user: User): Future[Unit]
}

class UserDAOImpl(implicit executor: ExecutionContext)  extends UserDAO with UserCollection {
  override def insert(user: User) = handleInsertResult(
    usersCollection.flatMap(_.insert(userToDocument(user))))

  private def handleInsertResult(result: Future[WriteResult])  = {
    result.onComplete {
      case failure @ Failure(e) => e.printStackTrace(); failure
      case Success(_) => println(s"User successfully inserted.")
    }

    result.map(_ => ())
  }

  def usersCollection : Future[BSONCollection] = db.map(_.collection("users"))

  def userToDocument(user: User) = BSONDocument(
    "username" -> user.username,
    "password" -> user.password,
    "first_name" -> user.firstName,
    "last_name" -> user.lastName,
    "email" -> user.email
  )
}

trait UserCollection extends DBConnection {

}