SOAP/API

Question 1

What is SOAP?

Answer 1

Simple Object Access Protocol, it is an XML-based communication architecture that allows different platforms and languages to communicate through HTTP requests.
SOAP services explain the ways to interact with them via WSDL - Web Service Description Language, a language based on XML

Question 2

What is Allowlisting?

Answer 2

Before we can make any request to an external site (doesn’t matter the kind of service), we need to allowlist it in our org.
- Setup > Security > Remote SIte Settings
and then click on New Remote Site
- Give the URL of the site, give it an alias,
and click Save
- Once this is completed, we’re able to
make an external callout to the service

Question 3

Mock Classes

Answer 3

• Apex test classes don’t let us make callouts
  to external services.
• We need to create a response that mocks
  the one we would get as a result of the
  actual request
• For SOAP callouts specifically, we achieve
  this by making a second test class that
  implements the WebServiceMock
  interface
• Mock classes must be global or public and
  define the doInvoke() method, which has a
  void return type, and is also global or public

Question 4

Test.setMock() method

Answer 4

- Lets the system know which mock we're 
  using
- Takes 2 parameters
- First is the type of interface our mock 
  implements(WebServiceMock.class when 
  we’re testing SOAP callouts).
- Second is the instance of class that 
   implements this interface

Question 5

Salesforce SOAP API

Answer 5

• Standard Out-Of-the-Box (OOB) SOAP API
  that we can use
• Allows us to find duplicate records, execute
  queries, get information about objects and
  fields, perform DML operations, and more
  -

Question 6

RESTful Services

Answer 6

• Stands for Representational State Transfer
• Set of guidelines for API architecture that
  has requirements like implementing a
  uniform interface across the service and
  the server being stateless
• Interacting with REST services generally
  tends to be easier and more
  straightforward than interacting with SOAP
  webservices

Question 7

Salesforce REST API

Answer 7

• Standard REST API that they provide
• Can use it to execute queries, get
  information about objects and fields,
  perform DML operations, and more

Question 8

OOB Salesforce APIs

Answer 8

• Bulk API
• Chatter REST API
• User Interface API
• Analytics REST API
• Tooling API
• Metadata API
• Streaming API