http4k-connect-amazon-dynamodb/org.http4k.connect.amazon.dynamodb.model/Attribute

Attribute

class Attribute<FINAL>(val dataType: DynamoDataType, meta: Meta, get: (Item) -> FINAL, lensSet: (FINAL, Item) -> Item, ignoreNull: Boolean = false) : Lens<Item, FINAL> , LensInjector<FINAL, Item>

Constructs typesafe Lenses for the various Item/Key attributes. The lenses can be used to inject values with Item(attr of "123") or extract with attr(item).

Constructors

Attribute

constructor(dataType: DynamoDataType, meta: Meta, get: (Item) -> FINAL, lensSet: (FINAL, Item) -> Item, ignoreNull: Boolean = false)

Types

AttrLensSpec

open class AttrLensSpec<OUT>(dataType: DynamoDataType, get: LensGet<Item, OUT>, set: LensSet<Item, OUT>) : LensSpec<Item, OUT>

Companion

object Companion

Properties

dataType

val dataType: DynamoDataType

Functions

asAttributeDefinition

fun <T> Attribute<T>.asAttributeDefinition(): AttributeDefinition

Used for creating tables

asKeySchema

fun <T> Attribute<T>.asKeySchema(keyType: KeyType): KeySchema

Used for creating tables

asRequired

fun <OUT> Attribute<OUT?>.asRequired(description: String? = null, metadata: Map<String, Any> = emptyMap()): Attribute<OUT>

asValue

fun asValue(value: FINAL): AttributeValue

Return a correctly typed value for this attribute

extract

open fun extract(target: Item): FINAL

get

open operator fun <R : Item> get(target: R): FINAL

inject

open fun <R : Item> inject(value: FINAL, target: R): R

invoke

open operator override fun <R : Item> invoke(value: FINAL, target: R): R

open operator override fun invoke(target: Item): FINAL

iterator

open operator override fun iterator(): Iterator<Meta>

open infix fun <R : Item> of(value: FINAL): (R) -> R

restrictFrom

open fun <NEXT : Item> restrictFrom(): LensExtractor<NEXT, FINAL>

restrictInto

open fun <NEXT : Item> restrictInto(): LensInjector<FINAL, NEXT>

set

open operator fun <R : Item> set(target: R, value: FINAL): R

toString

open override fun toString(): String