Set (Morphia)

java.lang.Object

dev.morphia.aggregation.stages.Stage

dev.morphia.aggregation.stages.Set

public class Set extends Stage

Adds new fields to documents. $set outputs documents that contain all existing fields from the input documents and newly added fields.

The $set stage is an alias for $addFields.

Both stages are equivalent to a $project stage that explicitly specifies all existing fields in the input documents and adds the new fields.

Since:: 2.3

Method Summary

Modifier and Type

Method

Description

Set

field(String name, Object value)

Add a field to the stage

static Set

set()

Creates a new Set stage

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- set
  
  public static Set set()
  
  Creates a new Set stage
  
  Returns:
  
  the new stage
  
  MongoDB documentation
  Aggregration Pipeline Stage: $set
  Since server release
  4.2
- field
  
  public Set field(String name, Object value)
  
  Add a field to the stage
  
  Parameters:
  
  name - the name of the new field
  
  value - the value expression
  
  Returns:
  
  this