UnnestStage

withField

fun withField(arrayWithAlias: Selectable): UnnestStage

Creates UnnestStage with input array and alias specified.

For each document emitted by the prior stage, this stage will emit zero or more augmented documents. The input array is found in parameter arrayWithAlias, which can be an Expression with an alias specified via Expression.alias, or a Field that can also have alias specified. For each element of the input array, an augmented document will be produced. The element of input array will be stored in a field with name specified by the alias of the arrayWithAlias parameter. If the arrayWithAlias is a Field with no alias, then the original array field will be replaced with the individual element.

withField

fun withField(arrayField: String, alias: String): UnnestStage

Creates UnnestStage with input array and alias specified.

For each document emitted by the prior stage, this stage will emit zero or more augmented documents. The input array found in the previous stage document field specified by the arrayField parameter, will for each element of the input array produce an augmented document. The element of the input array will be stored in a field with name specified by alias parameter on the augmented document.

equals

open operator fun equals(other: Any?): Boolean

hashCode

open fun hashCode(): Int

withIndexField

fun withIndexField(indexField: String): UnnestStage

Adds an index field to the output documents.

A field with the name specified in indexField will be added to each output document. The value of this field is a numeric value that corresponds to the array index of the element from the input array.