class DynamoProjectionExpression

Language	Type name
.NET	`Amazon.CDK.AWS.StepFunctions.Tasks.DynamoProjectionExpression`
Java	`software.amazon.awscdk.services.stepfunctions.tasks.DynamoProjectionExpression`
Python	`aws_cdk.aws_stepfunctions_tasks.DynamoProjectionExpression`
TypeScript (source)	`@aws-cdk/aws-stepfunctions-tasks` » `DynamoProjectionExpression`

Class to generate projection expression.

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as stepfunctions_tasks from '@aws-cdk/aws-stepfunctions-tasks';
const dynamoProjectionExpression = new stepfunctions_tasks.DynamoProjectionExpression();

Initializer

new DynamoProjectionExpression()

Methods

Name	Description
atIndex(index)	Adds the array literal access for passed index.
toString()	converts and return the string expression.
withAttribute(attr)	Adds the passed attribute to the chain.

atIndex(index)

public atIndex(index: number): DynamoProjectionExpression

Parameters

index number — array index.

Returns

DynamoProjectionExpression

Adds the array literal access for passed index.

toString()

public toString(): string

Returns

string

converts and return the string expression.

withAttribute(attr)

public withAttribute(attr: string): DynamoProjectionExpression

Parameters

attr string — Attribute name.

Returns

DynamoProjectionExpression

Adds the passed attribute to the chain.