Friday, 26 June 2015

UNABLE_TO_LOCK_ROW Error during deployment.

Hi All,

I came across an issue (UNABLE_TO_LOCK_ROW) while deploying and validating change set. As you know all the test classes run when a change set is validated or deployed,one of the test class was throwing UNABLE_TO_LOCK_ROW exception.

How will you handle above exception?

Ans- Setup--Develop-- Apex Test Execution--Click Options--Checked Disable Parallel Apex Testing.

Sunday, 21 June 2015

Passing JavaScript in Page reference method.

The below post is all about closing child window and refreshing parent window after updating record.

But let's think there is a requirement like we have to validate before updating and closing child window then above approach wont work.

For the above requirement we have to pass javascript code in pagereference method instead of calling javascript on button click.

public PageRefeRence savingAccount(){
        PageRefeRence pageRef ;
        if( == ''){
            ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.Error,'You must enter some value...');
            upsert account;  
        pageRef = new PageReference('javascript:window.opener.location.href='+'\'/'+account.ID+'\';window.close();');
        return pageRef ;

Thursday, 11 June 2015

Closing the child window and Refreshing parent window.

As we all know there are many window properties are available so it is quite easy even i had thought same thing but while implementing i faced many issue so i thought of sharing.

Below are few window property which are useful.

·         window.opener refers to the window that called ... ) to open the window from which it's called
·         window.parent refers to the parent of a window in a <frame> or <iframe>
· refers to the top-most window from a window nested in one or more layers of <iframe> sub-windows.

Lets say there is button on account "Change Account Name" ,On clicked one popup is opening and which would allow you to change Account name and one button "Save" is there in popup window. On clicked child window will be closed and account name will updated with the new name.

Step-1 Create vf page

<apex:page standardController="Account" extensions="PopuptestForAccount" showHeader="false" sidebar="false">
<script type="text/javascript">
     function Callmefunc(){ = "/"+'{!account.ID}';
       window.close();// optional.not required but better to keep it. 
    <apex:form > 
    <apex:pagemessages />
        <apex:pageBlock id="testblock">
            <apex:pageBlockSection >
                <apex:inputField value="{!}"/>
                <apex:commandButton value="save"  action="{!savingAccount}" oncomplete="Callmefunc();" />
Step-2:-Create an extension class
public class PopuptestForAccount{
    public Account account{get;set;}
    public PopuptestForAccount(ApexPages.StandardController controller){
        this.account = (Account)controller.getRecord(); 
    public PageRefeRence savingAccount(){
        if( == ''){
            ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.Error,'You must enter some value...');
            upsert account;
         return null;
Step-3 :-Create custom button on account and choose above page as content source.

Refer this link for to create custom button.

Wednesday, 10 June 2015

How to schedule one class to run in every 1 mins?

Sometimes we need to run a class in every minute to do some operation.

    // This section of code will schedule the next execution 1 minutes from now
   global class Scheduling_Svc_WS_CreateBatch implements Schedulable{

 // Execute method
    global void execute(SchedulableContext SC) {

         datetime nextScheduleTime =;
         string minute = string.valueof(nextScheduleTime.minute());
         string second = string.valueof(nextScheduleTime.second ());
         string cronvalue = second+' '+minute+' 0-23 * * ?' ;
         string jobName = 'selfReschedulingClass ' +nextScheduleTime.format('hh:mm');
         Scheduling_Svc_WS_CreateBatch p = new Scheduling_Svc_WS_CreateBatch();
          system.schedule(jobName, cronvalue , p);
         // this section of code will abort the current schedule job