Pagination

In many cases you want to have the possibility to paginate over the response of your query result. MongoCamp MongoDB Driver support the pagination over Aggregation and Filter Response. As well there is an comfort methode to have an foreach over the whole Response, but with pagination to have a lower memory footprint.

Aggregation Pagination

WARNING

The Pagination over an aggregation pipeline supports only the response of Document, also if you use an case class MongoDAO you will got an Document back.

val pipeline = List(filterStage, sortStage)

val pagination = MongoPaginatedAggregation(PersonDAO.Raw, pipeline, allowDiskUse = true)

val page = pagination.paginate(1, 10)

Find Pagination

val paginationFemale = MongoPaginatedFilter(PersonDAO, Map("gender" -> "female"), sortByKey("name"))

val pageFemale = paginationFemale.paginate(1, 10)

Foreach over Pagination result

With default row count

var i = 0
pagination.foreach { element =>
  {
    logger.trace(element.toJson())
    i = i + 1
  }
}
i mustEqual 98

With specific row count

paginationFemale.foreach(5) { person =>
  {
    logger.trace(person.toString)
    i = i + 1
  }
}
i mustEqual 98