APIs/Data Models (18%)

Question 1

True or False. Most of the time, mappers do not apply business logic?

Answer 1

True

Question 2

Which requests may contain a query string and a body ?

Answer 2

POST, PUT and PATCH

Question 3

From a payload, which kind of object is constructed and passed to the controller?

Answer 3

An API Model object

Question 4

Name the 2 attributes that are used to determine which URL an endpoint will respond to?

Answer 4

RoutePrefix

Route

Question 5

Which method is declared in the BaseApiController class and is responsible for the whole controller flow?

Answer 5

The ExecuteAsync method

Question 6

What is the ExecuteAsync method?

Answer 6

It is a simple async wrapper around the synchronous Execute method

Question 7

What is the responsibility of the Execute method from the BaseApiController class?

Answer 7

The Execute method is responsible for the whole API call flow.

It interacts with the mapper and the service to apply the business logic

Question 8

Name the 4 steps done by the Execute method of the BaseApiController class

Answer 8

Map the API parameter to Service parameter
Call the service with the Service parameter
Map the Service Result back to an API result
Send back the API Result in the response

Question 9

Which are the 3 common strategies adopted when developing custom API endpoints?

Answer 9

Simple service + controller (simple method)
Simple service + ExecuteAsync (hybrid method)
Service + Handler Chain (advanced method)

Question 10

The ExecuteAsync method takes 5 generic types as parameters. Name them, in the correct order.

Answer 10

Mapper
API Parameter
Service Parameter
Service Result
API Result

Question 11

Which Object Relational Model (ORM) B2B Commerce uses?

Answer 11

B2B Commerce uses Entity Framework Code First version 6

Question 12

Where is the the ODataControllers.tt T4 template located?

Answer 12

In the Insite.Admin library

Question 13

Is it possible for developers to extend the existing T4 template?

Answer 13

No. I t is recommended to implement a custom T4 template independently. Developers cannot extend the existing T4 template.

Question 14

Describe 2 ways entities can be archived?

Answer 14

Setting the DateTime deactivate property to today’s date.

Setting the Boolean archive property to false.

Question 15

How is it possible for a developers to retrieve archived entities?

Answer 15

Using the Admin API developers can retrieve archived entities by appending the archivedFilter=1 OData query

Question 16

Which syntax is the Admin API using?

Answer 16

The Admin API uses OData syntax

Example:
Admin API return a single object syntax:
/api/v1/admin/products(f88d5c07-eb72-42eb-ab36-a5d201168a49)

Storefront API return a single object syntax:
/api/v1/products/f88d5c07-eb72-42eb-ab36-a5d201168a49

Question 17

Which are here are two ways to retrieve child collections on a RESTful JSON result?

Answer 17

Use the expand parameter for the query string
Example: /api/v1/websites(d24h5c07-eb72-42eb-ab36-a5d201168jh5)?$expand=countries

Use the name of the child entity after the slash
Example: /api/v1/websites(d24h5c07-eb72-42eb-ab36-a5d201168jh5)/countries

Question 18

True or False

All of the entities within B2B Commerce will contain a Patch endpoint for the Admin API to update them?

Answer 18

True

Question 19

Where are the OData Entities models located?

Answer 19

The models are located in the Insite.Data.Entities library

Question 20

What is the root namespace for entity-related components in the B2B Commerce framework?

Answer 20

Insite.Data

Question 21

How to create an entity class?

Answer 21

• First create a POCO (Plain Old CLR Object) that extends from Insite.Data.Entities.EntityBase
• Then add properties with add virtual properties

Question 22

From which library a new mapping class for a newly created entity class should extend?

Answer 22

It should extend from Insite.Data.Providers.EntityFramework.EntityMappings.EntityBaseTypeConfiguration

Question 23

How to add an entity class?

Answer 23

• create a POCO (Plain Old CLR Object) that extends from Insite.Data.Entities.EntityBase
• add virtual properties to the class

Question 24

From what a mapping class must extend a custom entity class to be bootstrapped to the context correctly?

Answer 24

From Insite.Data.Providers.EntityFramework.EntityMappings.EntityBaseTypeConfiguration

Question 25

What are the 2 properties and values that must be set to properly for a SQL script to run automatically?

Answer 25

Setting the Build Action property of the file to Embedded Resource
Setting the Copy to Output Directory property to Do not copy

Question 26

Which Optimizely optimization can be used to get a collection without tracking?

A) WithNoTracking
B) AsNoTracking
C) GetTableAsNoTracking

Answer 26

C) GetTableAsNoTracking

To get a collection without tracking, invoke the GetTableAsNoTracking method on the Repository.

Question 27

Which connection string will have only read/write/execute privileges on all schemas and will no longer be the database owner and will not be allowed to execute SQL scripts or any DDL?

Answer 27

InSite.Commerce

Question 28

Which connection string will have database owner rights and be able to do anything on any schema - this connection will be used to execute base scripts?

Answer 28

InSite.Commerce.Admin

Question 29

Which connection string will have DDL rights to the Extensions schema only?

Answer 29

InSite.Commerce.Extensions

Question 30

Which nuget package is required in your Extensions project to create a custom entity for your custom table?

Answer 30

EntityFramework v6.1.3

Question 31

Signing into B2B involves two requests. What are they?

Answer 31

one to authenticate with Identity Server and a second to create an B2B session.