ChangeStreams

Change stream utilities.

import scala.concurrent.{ ExecutionContext, Future }

import reactivemongo.api.ChangeStreams.FullDocumentStrategy

import reactivemongo.api.bson.BSONDocument
import reactivemongo.api.bson.collection.BSONCollection

def peekNext(
  coll: BSONCollection,
  strategy: FullDocumentStrategy)(
  implicit ec: ExecutionContext): Future[Option[BSONDocument]] =
  coll.watch[BSONDocument](fullDocumentStrategy = Some(strategy)).
    cursor.headOption

def doIt(coll: BSONCollection)(
  implicit ec: ExecutionContext): Future[Unit] = for {
    _ <- peekNext(coll, FullDocumentStrategy.Default)
    _ <- peekNext(coll, FullDocumentStrategy.UpdateLookup)
  } yield ()

See also: reactivemongo.api.collections.GenericCollection.watch

Linear Supertypes

AnyRef, Any

Type Members

sealed abstract class FullDocumentStrategy extends AnyRef

Defines the lookup strategy of a change stream.

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
object FullDocumentStrategy

FullDocumentStrategy utilities
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@HotSpotIntrinsicCandidate() @throws( ... )
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
Annotations
@HotSpotIntrinsicCandidate()
def hashCode(): Int

Definition Classes
AnyRef → Any
Annotations
@HotSpotIntrinsicCandidate()
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
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Annotations
@HotSpotIntrinsicCandidate()
final def notifyAll(): Unit

Definition Classes
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Annotations
@HotSpotIntrinsicCandidate()
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
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final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
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Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
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Annotations
@throws( ... )
final def wait(): Unit

Definition Classes
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Annotations
@throws( ... )

Deprecated Value Members

def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@Deprecated @deprecated @throws( classOf[java.lang.Throwable] )
Deprecated
(Since version ) see corresponding Javadoc for more information.

Related Doc: package api

object ChangeStreams

Type Members

sealed abstract class FullDocumentStrategy extends AnyRef

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

object FullDocumentStrategy

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

final def wait(): Unit

Deprecated Value Members

def finalize(): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped