What is Apex?

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What is Apex?

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What is Apex?

• Apex is a strongly typed, object-oriented
  programming language similar to JAVA that allows
  programmers to execute their code on Salesforce
  servers including API calls. It uses syntax that
  appears like Java and acts like database stored
  procedures. It enables programmers to implement
  logic to most system events which include button
  clicks, related record updates, and Visualforce
  pages. Its codes are often initiated by Web
  service requests, from triggers on objects, LWC,
  and aura components.

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As a language, Apex is

• Integrated
• It provides built-in support for common Lightning
  Platform idioms, including
• Data manipulation language (DML) calls, like
  INSERT, UPDATE, and DELETE, which include
  DmlException handling.
• Inline Salesforce Object Query Language (SOQL) to
  query records of an object and Salesforce Object
  Search Language (SOSL) queries that return lists
  of sObject records.
• Looping that permits for bulk processing of
  multiple records at a time
• Locking syntaxes that prevent record update
  conflicts while execution.
• Custom public API calls will be built from stored
  Apex methods
• Warnings and errors are issued when a user tries
  to edit or delete a custom object or field thats
  referenced by Apex

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Easy to use

• Apex is predicated on familiar Java idioms, like
  variable and expression syntax, block and
  conditional statement syntax, loop syntax,
  object, and array notation. Where it introduces
  new elements, it uses syntax and semantics that
  are easy to know and encourage efficient use of
  the Lightning Platform. Therefore, it produces
  code thats both succinct and straightforward to
  write down.

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Data focused

• Apex is predicated on familiar Java idioms, like
  variable and expression syntax, block and
  conditional statement syntax, loop syntax,
  object, and array notation. Where it introduces
  new elements, it uses syntax and semantics that
  are easy to know and encourage efficient use of
  the Lightning Platform. Therefore, it produces
  code thats both succinct and straightforward to
  write down.

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Rigorous

• Apex is a strongly typed language that uses the
  direct reference to schema objects like object
  and field names. It fails quickly at compile time
  if any references are not valid. It stores all
  custom field, object, and sophistication
  dependencies in metadata to make sure that
  theyre not deleted while required by active Apex
  code.
• Hosted
• Apex is interpreted, executed, and controlled
  entirely by the Lightning Platform.

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• Multi Tenant aware
• Like the remainder of the Lightning Platform,
  Apex runs during a multitenant environment. So,
  the Apex runtime engine is supposed to guard
  closely against runaway code, preventing it from
  monopolizing shared resources. If any code
  violates the limits system will throw
  easy-to-understand error messages.
• Easy to test
• Apex provides built-in support for unit test
  creation and execution. It includes test results
  that indicate what proportion code is roofed, and
  which parts of your code might be more efficient.
  Salesforce ensures that each one custom Apex code
  works needless to say by executing all unit tests
  before any platform upgrades.
• Versioned
• You can save your Apex code against different
  versions of the API. This enables you to maintain
  behavior.
• Apex is included in Performance Edition,
  Unlimited Edition, Developer Edition, Enterprise
  Edition, and Database.com.

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