Apex (programming language)
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| Apex (programming language) | |
|---|---|
.png) ™/®Salesforce.com · Public domain · source | |
| Name | Apex |
| Designer | Salesforce |
| Developer | Salesforce |
| Typing | Static, strong |
| Influenced by | Java, C#, SQL |
| License | Proprietary |
| Website | salesforce.com |
Apex (programming language)
Apex is a proprietary, strongly typed programming language created by Salesforce for building business logic on the Salesforce Platform. It provides declarative and programmatic means to implement server-side behavior within Salesforce CRM, integrating with services such as Force.com and Heroku. Apex combines influences from Java (programming language), C#, and SQL to target multi-tenant cloud environments and platform-specific APIs.
Overview
Apex is designed for enterprise application development on the Salesforce Platform, enabling developers to write triggers, controllers, and batch processes that interact with objects like Account (entity), Contact (entity), and Opportunity. It supports object-oriented constructs familiar to developers from Java (programming language), C#, Smalltalk, and Visual Basic. Apex code executes within the context of SOQL and SOSL operations and integrates with platform features including Lightning, Visualforce, and Einstein Analytics.
History and development
Apex was introduced by Salesforce in 2007 as part of the Force.com platform expansion, evolving alongside releases tied to major events such as the Dreamforce conferences. Early design drew on precedents set by Java (programming language), PL/SQL, and Transact-SQL, while the platform strategy was influenced by cloud pioneers like Amazon Web Services, Google Cloud Platform, and Microsoft Azure. Over successive releases, feature additions paralleled trends from ECMAScript, C Sharp (programming language), and Java SE updates, aligning Apex with enterprise needs showcased at industry gatherings including TrailheaDX and vendor partnerships with firms such as IBM, Accenture, and Deloitte. Governance and multi-tenancy pressures reflected regulatory milestones like General Data Protection Regulation and standards discussed at ISO forums.
Language design and features
Apex offers classes, interfaces, and exceptions following conventions similar to Java (programming language), with support for collections, generics, and annotations reminiscent of C Sharp (programming language) and Java annotations. It provides language constructs for writing synchronous and asynchronous code patterns comparable to Java Concurrency Utilities and ReactiveX idioms, while integrating query constructs akin to SQL. Apex enforces governor limits to manage resources in a multi-tenant environment, echoing resource control concepts from Google App Engine and Heroku. Features include trigger frameworks analogous to patterns used in Ruby on Rails, batch processing inspired by MapReduce and Apache Hadoop, and testing support aligned with practices in JUnit and NUnit.
Runtime and execution model
Apex executes on a proprietary runtime within Salesforce's multi-tenant infrastructure, isolating tenant processes similarly to isolation models in VMware ESXi and container approaches such as Docker. The runtime enforces governor limits modeled after quota systems used by Amazon EC2 and Google App Engine to prevent noisy neighbor issues documented in discussions around Cloud Computing. Transaction semantics follow ACID-like patterns for operations on platform objects, with rollback behavior comparable to Oracle Database and PostgreSQL savepoint mechanisms. Asynchronous execution uses queueable jobs, future methods, and batch Apex, paralleling queuing concepts from RabbitMQ, Apache Kafka, and Amazon SQS.
Tooling and ecosystem
Tooling around Apex includes integrated development support in Salesforce Developer Console, command-line interfaces such as Salesforce CLI, and IDE integrations with Visual Studio Code, JetBrains IntelliJ IDEA, and plugins from Eclipse Foundation ecosystems. The ecosystem features package management via Salesforce AppExchange, CI/CD integrations with platforms like Jenkins, GitHub Actions, and CircleCI, and DevOps practices advocated by firms such as Copado and Gearset. Third-party libraries, community resources from Trailhead, and contributions by consultancies including PwC and KPMG support adoption.
Use cases and industry adoption
Apex is widely used by organizations deploying CRM customizations, workflow automation, and integrations within sectors served by Salesforce, including firms like Coca-Cola, American Express, Toyota Motor Corporation, and T-Mobile. Common use cases include trigger-driven business rules for entities such as Lead and Case, scheduled batch jobs for data synchronization with systems like SAP and Workday, and RESTful integrations with APIs from Stripe, Twilio, and Salesforce Marketing Cloud. Industries adopting Apex include financial services exemplified by JPMorgan Chase, healthcare organizations like Mayo Clinic, and public sector agencies collaborating with vendors such as Accenture.
Criticism and limitations
Critics point to proprietary lock-in risks associated with dependence on Salesforce's platform, echoing concerns raised about vendor lock-in in debates involving Microsoft, Oracle Corporation, and IBM. Governor limits have been controversial among developers familiar with unconstrained runtimes such as Node.js and Go (programming language), with some citing scalability and debugging challenges compared to open platforms promoted by Kubernetes and Cloud Native Computing Foundation. Licensing, cost structures, and upgrades have prompted comparisons to procurement discussions involving SAP SE and Oracle Corporation, while vendor-driven API changes have drawn scrutiny in forums akin to IETF and W3C standardization debates.