Apex programming WSDL can be downloaded from the “Setup” area of your Salesforce org. Just land on the “App Setup > Develop > API” page. Instructions to download are shown below:

Retrying web service call failures/exceptions is important because not every exception means it’s the “end of the world." There is always some hope for some exceptions, like Session timeouts or Invalid session IDs. One can always renew the session (if credentials are available) and make those failing web service calls work again.

As mentioned in my previous post, I was researching/benchmarking on how HTTP Compression with Apache Axis improves performance. The results I got post HTTP compression, are surprisingly amazing…

I have been speaking a lot about using WSC above Apache Axis, but today I found an interesting old post about HTTP compression with Apache Axis. This is interesting because it can boost performance for those who are integrating with Salesforce web services using Java Apache Axis.

One can get errors like: No such column ‘SmallPhotoUrl’ on entity ‘Name’ OR No such ‘column CompanyName’ on entity ‘Name’. On an SOQL statement like:

Force.com sites redirects to “Authorization Required” page in case something goes wrong behind the scenes, for ex…

The key to write a good apex test case is isolate test-data from actual org/user data. If your test case in anyway depends on org data, then it will fail for sure in deployments across different Salesforce orgs…

Apex static is always confusing for me. I am from a Java background, so it took a while for me to really understand the differences between Apex and Java static. This post discusses apex controller static behavior, i.e., in relation to Visualforce only.

What if you want to create a Batch Apex Job that uses SOQL having aggregate functions like SUM, MAX, and COUNT on top of results grouped by the “GROUP BY” clause? You can’t easily create a Batch job via QueryLocator, as shown below. When working with Batch Apex in Salesforce, you might encounter a scenario where you need to run SOQL queries with aggregate functions like SUM, MAX, or COUNT while grouping results using the GROUP BY clause.

You must be stuck up with Apex, when sorting is required on instances of user defined classes and pre-loaded Sobjects. Unfortunately standard Apex API just gives a method List.sort(), that just works with primitive data types…

This post tries to cover a common night mare while developing solutions on top of Salesforce using Partner/Enterprise WSDL web services. So this post can be super helpful for developers working with following technologies with Salesforce Partner/Enterpise WSDLs…

This post is for developers working on Visual Force. I came across an interesting way to control the rendering of HTML markup; previously, I was using “<apex:outputPanel .. />” for controlling the rendering of some HTML markup. This approach works….

Sometimes while working with Salesforce Web Service APIs, we get a “No Operation Available for Request” error. This error comes because the “Web service ENDPOINT URL” is not correct. In my case, this error came when I was trying to use “apex.wsdl” for executing Apex test cases via my Java code.

501 error comes when we cross the governor limit, that is, “total number of records retrieved by SOQL queries”. As per this limit, a single Apex testMethod can only retrieve 500 rows in all SOQL calls.

Apex wrapper on Apex DOM classes(Document, XmlNode). It exposes W3C DOM API for XML manipulation, which is pretty popular and known to most developers, so saves…

YUI Dependency Configurator is a great tool for getting a single unified JS or CSS instead of several css/js files. Only problem with that is it doesn't works over "HTTPS". Browser's like Internet Explorer fail to load a web page delivered over HTTPS containing JS/CSS delivered over un-secure(HTTP) URLs…

Singleton is pretty popular and one of the most simple design patterns. On many occasions, we want an Apex class to have a single instance only. Fortunately, it's possible and pretty easy with Apex. There can be different strategies to implement singleton in Apex (inspired by my Java days learning). Before that, the following are the prerequisites to make a class Singleton.

Custom settings in Salesforce are a valuable tool for development, but they can trigger unexpected Null Pointer Exceptions when deployed to new orgs without predefined records. This common issue arises from calling CustomSetting__c.getInstance() without any available data, resulting in runtime errors.

While doing some coding using the new Apex DOM classes, I felt so frustrated regarding the BAD class design, that I decided to write a post covering my experiences.