Salesforce Basic Development
Download as PPTX, PDF3 likes678 views
This document provides an overview and agenda for a Salesforce development training. It covers Apex, the programming language used to write business logic in Salesforce. It discusses Apex architecture, data types, objects, collections like lists, sets and maps, queries using SOQL and SOSL, testing with test classes, and Visualforce pages. Visualforce allows customizing the user interface. The document also outlines best practices for test classes and limits in the Salesforce platform like limits on queries, DML statements and heap size.
![sObject
Contact c= [Select email from Contact where
name = “Dazeworks"]
String e = c.email;
if(e == null)
delete c;
If Email is not there then record with contact
name will be deleted.](https://image.slidesharecdn.com/apexpresentation-161017105020/85/Salesforce-Basic-Development-10-320.jpg)
Salesforce Basic Development
- 1. SALESFORCE DEVELOPMENT - MOUSUMI CHATTERJEE - NAVEEN DHANARAJ
- 2. Agenda • Introduction • Apex • Architecture of Apex • Collections • List • Set • map • Query • SOQL • SOSL • Test class • Visualforce Pages • Architecture of visualforce pages
- 3. Introduction: Salesforce.com is Sales(CRM) and Service applications which were developed and running on the Force.com Platform. Force.com is a platform where you can develop your own application
- 4. APEX What is Apex? • Strongly Typed object oriented programming language and running on Force.com Platform. • Apex is Easy to use, Multitenant Environment, Upgrades Automatically, Easy Testing, Versioned, Integrated. • Apex allows developement of business logics to get executed system events including button click related record updates and vf pages.
- 5. Why we use APEX? • When we have complex business processes that are unsupported by the existing functionality. • When this is the case, the Force.com platform includes a number of ways for advanced administrators and developers to implement custom functionality. • These include Apex, Visualforce, and the SOAP API.
- 7. Datatype 1.Primitive - Basically found in any other programming language eg. Boolean, decimal double , ID (any Id in salesforce .com). 2. sObjects - It refer to Salesforce object . Datatype very specific to Salesforce. It represents a row of data. 3.Collections:
- 8. sObject • Account a= new Account(name=“Dw",Type="Customer-Type" , Industry="Technology");
- 9. sObject • Account a= new Account(name=“Dw",Type="Customer-Type" , Industry="Technology"); • Account a = new Account( Select name, type, Industry where name="Dazeworks Technologies);
- 10. sObject Contact c= [Select email from Contact where name = “Dazeworks"] String e = c.email; if(e == null) delete c; If Email is not there then record with contact name will be deleted.
- 11. Writing APEX Class Setup Build Develop Apex Class New
- 12. COLLECTION
- 13. Collections • Collection work somewhat like array, except their size can change dynamically. • Collection is an object that can hold reference of other object or sObject. • Collection are more advanced in behavior and have easy access methods .
- 14. Types of Collection •LIST •SET •MAP They are collections used in APEX.
- 15. LIST • <List> is a collection of records which is an ordered collection. • <List> can contain duplicate values.
- 16. Example List<String> animal= new List<String>("pig", "earthworm", "chimpanzee", "panda"); • pig--0 • earthworm--1 • chimpanzee -2 • panda ---3 String first_animal =animals.get(0); It will return pig
- 17. SET • Set is a collection of unique, unordered primitive datatypes or sobjects. • Set does not contain duplicate values.
- 18. Example Set<Integer> s = new set<Integer>(); s.add(1); //adds an element to the set System.asserts(s.contains(1)); // Asserts that the set contains an element s.remove(1); removes an element
- 19. MAP • MAP is a collection of key-pair values. • The key is unique and can be of any data- type like String , sObjects. Pair-values can have duplicate values.
- 20. SOQL Query • Salesforce Object Query Language(SOQL) is a query-only language , similar to SQL . • It uses relationship for navigating data. • This is main language used for data retrieval of a single sObjects.
- 21. SOQL Query
- 22. SOSL Query • Salesforce Object Search Language(SOSL) is a simple language for searching all multiple persisted objects simultaneously. • A SOSL Query begins with the required FIND clause
- 23. SOSL Query
- 24. Difference B/w SOQL and SOSL SOQL SOSL Retrieves the records from the database by using “SELECT” keyword. Retrieves the records from the database by using the “FIND” keyword. Using SOQL we can know in Which objects or fields the data resides. Using SOSL, we don’t know in which object or field the data resides. We can retrieve data from single object or from multiple objects that are related to each other. We can retrieve multiple objects and field values efficiently when the objects may or may not be related to each other We can Query on only one object. We can query on multiple objects. Total number of records retrieved by SOQL queries is 50,000 Total number of records retrieved by a single SOSL query is 2000
- 25. TEST CLASS
- 26. APEX Unit Test • There must be 75% test coverage to be able to deploy apex code to your production organization. • Testing is key to ensuring the quality of any application • Salesforce executes Apex Unit Tests of all organization to ensure quality and that no existing behaviour has been altered for customers.
- 27. APEX Unit Test Below is the test class for the APEX Example shown
- 28. Best Practice for Test Class • Test class must start with @isTest annotation. • To deploy to production at-least 75% code coverage is required. • System.debug statement are not counted as a part of apex code limit. • Test method should static and no void return type. • Test method and test classes are not counted as a part of code limit.
- 29. Visualforce Page
- 30. Visualforce Page • Visualforce is a framework that allows developers to build sophisticated, custom user interfaces that can be hosted natively on the Force.com platform. • Maximum response size for a Visualforce page is less than 15Mb. • Maximum file size for a file uploaded using a Visualforce page is 10Mb.
- 31. When to use Visualforce? Visualforce page is a tag based mark-up language to develop customised user interface in Salesforce.
- 33. Writing Visualforce Page Language style: Tag Mark-up Page override model: Assemble standard and custom components using Tags. Performance Required technical Skills: HTML , XML , Bootstrap Interaction with Apex Direct, by binding to a custom controller
- 34. Example
- 35. Example contd…
- 36. Tags in Visualforce Page Tags : Used for : <apex:page/> Calls an action when the page is loaded. <apex:Form/> Creates a BUTTON that calls an action . <apex:pageBlock/> Creates a LINK that calls an action . <apex:pageblocksection /> Create a section within page block. <apex:inputfield/> HTML input element for a value to a field on a Salesforce object. <apex:outputfield/> A read-only display of a label and value for a field on a Salesforce object
- 37. Governor Limits • Apex runs in a multitenant environment, the Apex run time engine strictly enforces a number of limits to ensure that runaway Apex does not monopolize shared resources. Description Limits Total number of SOQL queries issued 100 Total number of SOSL queries issued 20 Total number of DML statements issued 150 Total heap size 6MB Total heap size for Batch Apex and future methods 12MB Maximum size of a Visualforce email template 1MB Total number of records retrieved by a single SOSL query 200
- 38. THANK YOU