Salesforce Developer

1---2name: salesforce-developer3description: Writes and debugs Apex code, builds Lightning Web Components, optimizes SOQL queries, implements triggers, batch jobs, platform events, and integrations on the Salesforce platform. Use when developing Salesforce applications, customizing CRM workflows, managing governor limits, bulk processing, or setting up Salesforce DX and CI/CD pipelines.4license: MIT5metadata:6  author: https://github.com/Jeffallan7  version: "1.1.0"8  domain: platform9  triggers: Salesforce, Apex, Lightning Web Components, LWC, SOQL, SOSL, Visualforce, Salesforce DX, governor limits, triggers, platform events, CRM integration, Sales Cloud, Service Cloud10  role: expert11  scope: implementation12  output-format: code13  related-skills: api-designer, java-architect, cloud-architect, devops-engineer14---15 16# Salesforce Developer17 18## Core Workflow19 201. **Analyze requirements** - Understand business needs, data model, governor limits, scalability212. **Design solution** - Choose declarative vs programmatic, plan bulkification, design integrations223. **Implement** - Write Apex classes, LWC components, SOQL queries with best practices234. **Validate governor limits** - Verify SOQL/DML counts, heap size, and CPU time stay within platform limits before proceeding245. **Test thoroughly** - Write test classes with 90%+ coverage, test bulk scenarios (200-record batches)256. **Deploy** - Use Salesforce DX, scratch orgs, CI/CD for metadata deployment26 27## Reference Guide28 29Load detailed guidance based on context:30 31| Topic | Reference | Load When |32|-------|-----------|-----------|33| Apex Development | `references/apex-development.md` | Classes, triggers, async patterns, batch processing |34| Lightning Web Components | `references/lightning-web-components.md` | LWC framework, component design, events, wire service |35| SOQL/SOSL | `references/soql-sosl.md` | Query optimization, relationships, governor limits |36| Integration Patterns | `references/integration-patterns.md` | REST/SOAP APIs, platform events, external services |37| Deployment & DevOps | `references/deployment-devops.md` | Salesforce DX, CI/CD, scratch orgs, metadata API |38 39## Constraints40 41### MUST DO42- Bulkify Apex code — collect IDs/records before loops, query/DML outside loops43- Write test classes with minimum 90% code coverage, including bulk scenarios44- Use selective SOQL queries with indexed fields; leverage relationship queries45- Use appropriate async processing (batch, queueable, future) for long-running work46- Implement proper error handling and logging; use `Database.update(scope, false)` for partial success47- Use Salesforce DX for source-driven development and metadata deployment48 49### MUST NOT DO50- Execute SOQL/DML inside loops (governor limit violation — see bulkified trigger pattern below)51- Hard-code IDs or credentials in code52- Create recursive triggers without safeguards53- Skip field-level security and sharing rules checks54- Use deprecated Salesforce APIs or components55 56## Code Patterns57 58### Bulkified Trigger (Correct Pattern)59 60```apex61// CORRECT: collect IDs, query once outside the loop62trigger AccountTrigger on Account (before insert, before update) {63    AccountTriggerHandler.handleBeforeInsert(Trigger.new);64}65 66public class AccountTriggerHandler {67    public static void handleBeforeInsert(List<Account> newAccounts) {68        Set<Id> parentIds = new Set<Id>();69        for (Account acc : newAccounts) {70            if (acc.ParentId != null) parentIds.add(acc.ParentId);71        }72        Map<Id, Account> parentMap = new Map<Id, Account>(73            [SELECT Id, Name FROM Account WHERE Id IN :parentIds]74        );75        for (Account acc : newAccounts) {76            if (acc.ParentId != null && parentMap.containsKey(acc.ParentId)) {77                acc.Description = 'Child of: ' + parentMap.get(acc.ParentId).Name;78            }79        }80    }81}82```83 84```apex85// INCORRECT: SOQL inside loop — governor limit violation86trigger AccountTrigger on Account (before insert) {87    for (Account acc : Trigger.new) {88        Account parent = [SELECT Id, Name FROM Account WHERE Id = :acc.ParentId]; // BAD89        acc.Description = 'Child of: ' + parent.Name;90    }91}92```93 94### Batch Apex95 96```apex97public class ContactBatchUpdate implements Database.Batchable<SObject> {98    public Database.QueryLocator start(Database.BatchableContext bc) {99        return Database.getQueryLocator([SELECT Id, Email FROM Contact WHERE Email = null]);100    }101    public void execute(Database.BatchableContext bc, List<Contact> scope) {102        for (Contact c : scope) {103            c.Email = 'unknown@example.com';104        }105        Database.update(scope, false); // partial success allowed106    }107    public void finish(Database.BatchableContext bc) {108        // Send notification or chain next batch109    }110}111// Execute: Database.executeBatch(new ContactBatchUpdate(), 200);112```113 114### Test Class115 116```apex117@IsTest118private class AccountTriggerHandlerTest {119    @TestSetup120    static void makeData() {121        Account parent = new Account(Name = 'Parent Co');122        insert parent;123        Account child = new Account(Name = 'Child Co', ParentId = parent.Id);124        insert child;125    }126 127    @IsTest128    static void testBulkInsert() {129        Account parent = [SELECT Id FROM Account WHERE Name = 'Parent Co' LIMIT 1];130        List<Account> children = new List<Account>();131        for (Integer i = 0; i < 200; i++) {132            children.add(new Account(Name = 'Child ' + i, ParentId = parent.Id));133        }134        Test.startTest();135        insert children;136        Test.stopTest();137 138        List<Account> updated = [SELECT Description FROM Account WHERE ParentId = :parent.Id];139        System.assert(!updated.isEmpty(), 'Children should have descriptions set');140        System.assert(updated[0].Description.startsWith('Child of:'), 'Description format mismatch');141    }142}143```144 145### SOQL Best Practices146 147```apex148// Selective query — use indexed fields in WHERE clause149List<Opportunity> opps = [150    SELECT Id, Name, Amount, StageName151    FROM Opportunity152    WHERE AccountId IN :accountIds      // indexed field153      AND CloseDate >= :Date.today()    // indexed field154    ORDER BY CloseDate ASC155    LIMIT 200156];157 158// Relationship query to avoid extra round-trips159List<Account> accounts = [160    SELECT Id, Name,161           (SELECT Id, LastName, Email FROM Contacts WHERE Email != null)162    FROM Account163    WHERE Id IN :accountIds164];165```166 167### Lightning Web Component (Counter Example)168 169```html170<!-- counterComponent.html -->171<template>172    <lightning-card title="Counter">173        <div class="slds-p-around_medium">174            <p>Count: {count}</p>175            <lightning-button label="Increment" onclick={handleIncrement}></lightning-button>176        </div>177    </lightning-card>178</template>179```180 181```javascript182// counterComponent.js183import { LightningElement, track } from 'lwc';184export default class CounterComponent extends LightningElement {185    @track count = 0;186    handleIncrement() {187        this.count += 1;188    }189}190```191 192```xml193<!-- counterComponent.js-meta.xml -->194<?xml version="1.0" encoding="UTF-8"?>195<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">196    <apiVersion>59.0</apiVersion>197    <isExposed>true</isExposed>198    <targets>199        <target>lightning__AppPage</target>200        <target>lightning__RecordPage</target>201    </targets>202</LightningComponentBundle>203```