I stumbled upon a strange Batch Apex issue today. My batch job was going well in a few SFDC orgs; after deploying the same to a new org it stopped working completely. I just see, “First error: Attempt to de-reference a null object” in debug and apex logs. 

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 is especially for those with a Java application (production) working with SFDC web services via Apache Axis stubs (WSDL2Java). However, due to the known advantages of WSC, you want to add some new functionality, such as the Bulk API.

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….

I am working and doing R&D with the Salesforce WSC library to get Tolerado ported to it. Most of the pieces worked well, but I was initially stuck with Metadata WSDL issues. I faced the following two major blockers: Metadata WSDL Compilation Issue and Metadata Connector Config Issue.

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.

I was going through the code sample and apex docs for new Spring 10 Apex DOM Classes. I feel these new classes are really a great missing piece for apex developers that work on integrations via web services(XML) for ex gdata api’s…

This post is for those who want to make AJAX calls in VisualForce using 3rd party JavaScript frameworks like JQuery, Yui, Dojo, etc. Though most of the time the built-in visual force Ajax works pretty well, you don’t need to make your hands dirty by doing this.

force.com standard and custom objects allow you to define fields with default values. However, there is a major confusion regarding the usage and availability of default values in Apex code.

There are many ways to handle XSS or cross-site scripting problems in Java, J2EE, Struts, Spring, and JSP. This post covers the most popular tools and ways to do that. In this post, I will explain tools like: