Tag Archives: Salesforce.com

Testing HTTP Callouts by Implementing the HttpCalloutMock Interface in Salesforce

Callout Class:

public class CalloutClass {
    public static HttpResponse getInfoFromExternalService() {
        HttpRequest req = new HttpRequest();
        Http h = new Http();
        HttpResponse res = h.send(req);
        return res;

Mock Http Response Generator Class:

global class MockHttpResponseGenerator implements HttpCalloutMock {
    global HTTPResponse respond(HTTPRequest req) {
        System.assertEquals('http://api.salesforce.com/foo/bar', req.getEndpoint());
        System.assertEquals('GET', req.getMethod());
        HttpResponse res = new HttpResponse();
        res.setHeader('Content-Type', 'application/json');
        return res;

Callout Test Class:

private class CalloutClassTest {
     @isTest static void testCallout() {
        Test.setMock(HttpCalloutMock.class, new MockHttpResponseGenerator());
        HttpResponse res = CalloutClass.getInfoFromExternalService();
        String contentType = res.getHeader('Content-Type');
        System.assert(contentType == 'application/json');
        String actualValue = res.getBody();
        String expectedValue = '{"foo":"bar"}';
        System.assertEquals(actualValue, expectedValue);
        System.assertEquals(200, res.getStatusCode());

Limit Class and Limit Methods in Salesforce

The Limits methods return the specific limit for the particular governor, such as the number of calls of a method or the amount of heap size remaining.

Because Apex runs in a multitenant environment, the Apex runtime engine strictly enforces a number of limits to ensure that runaway Apex doesn’t monopolize shared resources.

None of the Limits methods require an argument. The format of the limits methods is as follows:

 Integer queryLimitRows = Limits.getLimitQueryRows();

There are two versions of every method: the first returns the amount of the resource that has been used while the second version contains the word limit and returns the total amount of the resource that is available.

Limits Methods:
The following are methods for Limits. All methods are static.

System.debug('Limits.getAggregateQueries - '+ Limits.getAggregateQueries());
System.debug('Limits.getLimitAggregateQueries - '+ Limits.getLimitAggregateQueries());
System.debug('Limits.getCallouts - '+ Limits.getCallouts());
System.debug('Limits.getLimitCallouts - '+ Limits.getLimitCallouts());
System.debug('Limits.getCpuTime - '+ Limits.getCpuTime());
System.debug('Limits.getLimitCpuTime - '+ Limits.getLimitCpuTime());
System.debug('Limits.getDMLRows - '+ Limits.getDMLRows());
System.debug('Limits.getLimitDMLRows - '+ Limits.getLimitDMLRows());
System.debug('Limits.getDMLStatements - '+ Limits.getDMLStatements());
System.debug('Limits.getLimitDMLStatements - '+ Limits.getLimitDMLStatements());
System.debug('Limits.getEmailInvocations - '+ Limits.getEmailInvocations());
System.debug('Limits.getLimitEmailInvocations - '+ Limits.getLimitEmailInvocations());
System.debug('Limits.getFutureCalls - '+ Limits.getFutureCalls());
System.debug('Limits.getLimitFutureCalls - '+ Limits.getLimitFutureCalls());
System.debug('Limits.getHeapSize - '+ Limits.getHeapSize());
System.debug('Limits.getLimitHeapSize - '+ Limits.getLimitHeapSize());
System.debug('Limits.getMobilePushApexCalls - '+ Limits.getMobilePushApexCalls());
System.debug('Limits.getLimitMobilePushApexCalls - '+ Limits.getLimitMobilePushApexCalls());
System.debug('Limits.getQueries - '+ Limits.getQueries());
System.debug('Limits.getLimitQueries - '+ Limits.getLimitQueries());
System.debug('Limits.getQueryLocatorRows - '+ Limits.getQueryLocatorRows());
System.debug('Limits.getLimitQueryLocatorRows - '+ Limits.getLimitQueryLocatorRows());
System.debug('Limits.getQueryRows - '+ Limits.getQueryRows());
System.debug('Limits.getLimitQueryRows - '+ Limits.getLimitQueryRows());
System.debug('Limits.getQueueableJobs - '+ Limits.getQueueableJobs());
System.debug('Limits.getLimitQueueableJobs - '+ Limits.getLimitQueueableJobs());
System.debug('Limits.getSoslQueries - '+ Limits.getSoslQueries());
System.debug('Limits.getLimitSoslQueries - '+ Limits.getLimitSoslQueries());

Insert Records in Salesforce by using JavaScript

In this article I’ll demonstrate how to insert record in Salesforce object by using javascript, in VF page without any standard or custom controller or by apex class.

By using AJAX Toolkit we can do this task easily. There are two types of AJAX Toolkit one is synchronous and another one is asynchronous call.

Here is a simple example of data insert using Javascript in Visualforce page. In below example I’m using synchronous call.
These are the steps to insert data using Javascript:

  1. Connecting to the AJAX Toolkit(By using login methods or getting Session_ID).
  2. Embedding the API methods in JavaScript.
  3. Processing the results.

Sample Code:

<apex:page id="pg">
    <script src="/soap/ajax/20.0/connection.js" type="text/javascript"></script>
		function insertAcc(){

			// Getting Session ID.
			sforce.connection.sessionId = "{!$Api.Session_ID}";

			//Creating New Account Record.
			var account = new sforce.SObject("Account");

			//Getting Account Name from inputText.
			account.Name = document.getElementById("pg:frm:pb:pbs:pbsi:txtName").value;

			//Create method 
			var result = sforce.connection.create([account]);

			//Getting result 
			if (result[0].getBoolean("success")) {
				alert("New Account is created with id " + result[0].id);
			else {
				alert("failed to create new Account " + result[0]);
	<apex:form id="frm">
		<apex:pageBlock title="Insert Account" tabStyle="Account" id="pb">
			<apex:pageBlockSection title="Account Name" columns="1" id="pbs">
				<apex:pageBlockSectionItem id="pbsi">
					<apex:outputLabel value="Name" />
					<apex:inputText title="Name" id="txtName" />
				<apex:commandButton onclick="return insertAcc();" value="Save"/>

URL Class in Salesforce

//Create a new account called "Test Account" that we will create a link for later.
Account acc = new Account(Name = 'Test Account');
Insert acc;

//Get the base URL.
String baseURL = URL.getSalesforceBaseUrl().toExternalForm();
System.debug('Base URL: ' + baseURL);       

//Get the URL for the current request.
String currentReqURL = URL.getCurrentRequestUrl().toExternalForm();
System.debug('Current request URL: ' + currentReqURL);        

//Create the account URL from the base URL.
String accURL = URL.getSalesforceBaseUrl().toExternalForm() + '/' + acc.Id;
System.debug('URL of a particular account: ' + accURL); 

//Get some parts of the base URL.
System.debug('Host: ' + URL.getSalesforceBaseUrl().getHost());   
System.debug('Protocol: ' + URL.getSalesforceBaseUrl().getProtocol());

//Get the query string of the current request.
System.debug('Query: ' + URL.getCurrentRequestUrl().getQuery());

Generate Json Data Using Apex in Salesforce

Child Class:

public class Child{

    public String Name;
    public Child(String name) {
        this.Name = name;

Parent Class:

public class Parent{

    public Child[] ChildRecords;
    public String Name;
    public Parent(String Name) {
        this.Name = name;
        ChildRecords = new Child[0];

Pass parameters to above class using below code:

//Select Account Id from Account Object
String accountId = '0012800001A4UgG';

//Select Account & Contact Records
Account acc = [SELECT Id, Name, (SELECT Id, Name FROM Contacts) FROM Account WHERE Id =: accountId];

//Create a parent record
Parent par = new Parent(acc.Name);

//Loop on Contacts
for(Contact con: acc.Contacts) {
    par.childRecords.add(new Child(con.Name));

//Get the Json data
String jsonData = JSON.serialize(par);
System.debug('JsonData-' + jsonData);

Here is the debug log snapshot of Json data:
Json Data

Note: This is the sample class. You can modify it as per your requirement.