System Debug

Its very hectic to debug when we have too many script statements. Most of the time when we apply System.debug in our code with many script statement we get :


*********** MAXIMUM DEBUG LOG SIZE REACHED ***********


I get frustrated with this and started rolling over the pdf which says there is a solution for this. Now if I want to see a specific line debug which is coming almost in the end of our code so I will simply write this where I want to get the debug in my code :

System.debug(Logginglevel.ERROR , ' ::::::: My Debug :::::::::::::') ;

And after this some steps to be done

1. Create Debug logs from "Monitoring"
2. Create Filters :
• Database : NONE
• Workflow : NONE
• Validation : NONE
• Callouts : NONE
• Apex Code : ERROR
• Apex Profiling : NONE
• Visualforce : NONE

So when I execute my code only debug with Logginglevel.ERROR will be displayed. Isn't this useful. 

Enjoy the power of salesforce.

Pagination in Salesforce

We sometimes need to display many records on UI, so it doesn't look good when you display 10000 records on single page. Pagination is the best option you can opt for.


Now question is how you can apply pagination in salesforce with native salesforce look and feel. So here is the answer of this.


Visualforce Page Code :

<apex:page controller="pagingControllerForUser">
    <apex:form >
        <apex:pageBlock >
            
            <apex:pageMessages id="pgm"/>
            
            <apex:pageBlockButtons >
                <apex:commandButton value="Search" action="{!Search}"/>
            </apex:pageBlockButtons>
            
            <apex:pageBlockSection >
                <apex:pageBlockSectionItem >
                    <apex:outputLabel value="User Name"/>
                    <apex:inputText value="{!usr.Name}"/>
                </apex:pageBlockSectionItem>
            </apex:pageBlockSection>

        </apex:pageBlock>

        <apex:pageBlock rendered="{!IF(AllSearchUsers.size != null && AllSearchUsers.size > 0, true , false)}">

            <apex:outputPanel layout="block" styleClass="pSearchShowMore" id="otpNav2">
              Total Records Found: <apex:outputText rendered="{!IF(Con.resultSize==10000,true,false)}">10000 +</apex:outputText><apex:outputText rendered="{!IF(Con.resultSize < 10000,true,false)}">{!Con.resultSize}</apex:outputText>
                  <apex:image url="/img/search_prevarrow_disabled.gif" styleClass="prevArrow" rendered="{!NOT(Con.HasPrevious)}"/>
                  <apex:image url="/img/search_prevarrow.gif" title="Previous Page" styleClass="prevArrow" rendered="{!Con.HasPrevious}"/>
                  <apex:commandLink action="{!Previous}" title="Previous Page" value="Previous Page" rendered="{!Con.HasPrevious}"/>
                  <apex:outputPanel styleClass="pShowLess noLink" style="color:grey" rendered="{!NOT(Con.HasPrevious)}">Previous Page</apex:outputPanel>         
                  &nbsp;({!IF(Con.PageNumber == 1,1,((Con.PageNumber -1) * Con.PageSize)+1)}-{!IF(Con.resultSize < Con.PageSize,Con.resultSize,Con.PageNumber * Con.pageSize)})&nbsp;
                  <apex:outputPanel styleClass="pShowLess noLink" style="color:grey" rendered="{!NOT(Con.HasNext)}">Next Page</apex:outputPanel>         
                  <apex:commandLink title="Next Page" value="Next Page" rendered="{!Con.HasNext}" action="{!Next}"/>&nbsp;
                  <apex:image url="/img/search_nextarrow.gif" title="Next Page" styleClass="nextArrow" rendered="{!Con.HasNext}"/>
                  <apex:image url="/img/search_nextarrow_disabled.gif" rendered="{!NOT(Con.HasNext)}"/>          
              </apex:outputPanel>
            
            <apex:pageBlockSection columns="1">
                <apex:pageBlockTable value="{!AllSearchUsers}" var="UR">
                    <apex:column headerValue="Name" value="{!UR.Name}"/>
                    <apex:column headerValue="Email" value="{!UR.Email}"/>
                    <apex:column headerValue="Phone" value="{!UR.Phone}"/>
                    <apex:column headerValue="Department" value="{!UR.Department}"/>
                </apex:pageBlockTable>
            </apex:pageBlockSection>
            
            <apex:outputPanel layout="block" styleClass="pSearchShowMore" id="otpNav">
              Total Records Found: <apex:outputText rendered="{!IF(Con.resultSize==10000,true,false)}">10000 +</apex:outputText><apex:outputText rendered="{!IF(Con.resultSize < 10000,true,false)}">{!Con.resultSize}</apex:outputText>
                  <apex:image url="/img/search_prevarrow_disabled.gif" styleClass="prevArrow" rendered="{!NOT(Con.HasPrevious)}"/>
                  <apex:image url="/img/search_prevarrow.gif" title="Previous Page" styleClass="prevArrow" rendered="{!Con.HasPrevious}"/>
                  <apex:commandLink action="{!Previous}" title="Previous Page" value="Previous Page" rendered="{!Con.HasPrevious}"/>
                  <apex:outputPanel styleClass="pShowLess noLink" style="color:grey" rendered="{!NOT(Con.HasPrevious)}">Previous Page</apex:outputPanel>         
                  &nbsp;({!IF(Con.PageNumber == 1,1,((Con.PageNumber -1) * Con.PageSize)+1)}-{!IF(Con.resultSize < Con.PageSize,Con.resultSize,Con.PageNumber * Con.pageSize)})&nbsp;
                  <apex:outputPanel styleClass="pShowLess noLink" style="color:grey" rendered="{!NOT(Con.HasNext)}">Next Page</apex:outputPanel>         
                  <apex:commandLink title="Next Page" value="Next Page" rendered="{!Con.HasNext}" action="{!Next}"/>&nbsp;
                  <apex:image url="/img/search_nextarrow.gif" title="Next Page" styleClass="nextArrow" rendered="{!Con.HasNext}"/>
                  <apex:image url="/img/search_nextarrow_disabled.gif" rendered="{!NOT(Con.HasNext)}"/>          
              </apex:outputPanel>

        </apex:pageBlock>

    </apex:form>
</apex:page>

This page will show a input field where you can enter user name to be searched. Now when you click search all user by that name get searched, lets say I search with "Test Test". I have 8 users with that name in my organisation. 5 record will be shown at a time on screen, it will be displayed like this.





When we click "Next Page" next 5 records will be displayed, in this case 3 records. Screen will come up like this.





Apex Code :

public class pagingControllerForUser
{
    public List<User> AllSearchUsers
    {
        get
        {
            if(con != null)
                return (List<User>)con.getRecords();
            else
                return null ;
        }
        set;}
    
    public User usr {get; set;}
    
    //Controller
    public pagingControllerForUser()
    {
        AllSearchUsers = new List<User>() ;
        usr = new User() ;
    }
    
     public PageReference Search()
    {   
        if(usr.Name != null)
        {
            con = new ApexPages.StandardSetController(Database.getQueryLocator([select Id , name , email , phone, Department from User where name = :usr.Name]));
 
            // sets the number of records in each page set
            con.setPageSize(5);
        }
        else
        {
            con = null;
        }
        return null ;
    }
    
    //Instantiate the StandardSetController
    public ApexPages.StandardSetController con{get; set;}
    
    //Boolean to check if there are more records after the present displaying records
    public Boolean hasNext
    {
        get
        {
            return con.getHasNext();
        }
        set;
    }
 
    //Boolean to check if there are more records before the present displaying records
    public Boolean hasPrevious
    {
        get
        {
            return con.getHasPrevious();
        }
        set;
    }
 
    //Page number of the current displaying records
    public Integer pageNumber
    {
        get
        {
            return con.getPageNumber();
        }
        set;
    }

    //Returns the previous page of records
    public void previous()
    {
        con.previous();
    }
 
    //Returns the next page of records
    public void next()
    {
        con.next();
    }
}

Any query about this is welcomed.


Cheers

Saving Script Statements

Hi All,


Many of you must aware of this but would like to share with all.


Generally when we write a apex code we don't focus on saving the script statements, but when we are working with code in bulk then we should take care of our script statements to reduce the processing of our code and also to avoid the governor limit of 200,000.


Now if we want to fetch ids of all account from my organisation, one generally use this code:

//Fetching all accounts
List<account> accObj = [select Id from account limit 50000] ;

//Creating set of all account Ids
List<id> accIds = new List<id>() ;

//Fetching Account ids
for(Account acc : accObj)
{
 accIds.add(acc) ;
}
//Now we use this list of account ids in other queries

Now if the query will return 50000 records then for loop will execute 50000 script statements. Now to avoid this we can simply write:

//Fetching all account in map
Map<id,account> aMap = new Map<id,account>([Select Id,Name from Account limit 50000]);

//Creating list of accounts
List<account> accList = aMap.values() ;

//Creating set of ids
Set<id> accIds = aMap.keySet() ;

Now if any query returns sObject as return type then also we can use this approach by typecasting it like this :

//Your dynamic query
String accountDynamicQuery = 'select id from account limit 50000' ;

//Typecasting it to map
Map<id,account> mapAcc = new Map<id,account>((List<account>)Database.query(accountDynamicQuery));

Now when we insert a object lets say if we want to insert account with values in some fields then we write:

Account accObj = new Account();
accObj.Name = 'Test' ;
accObj.Fax = '123445657' ;
accObj.Phone = '123456789' ;
insert accObj ;

Instead of this we can write this to save our script statements:

Account accObj = new Account(Name = 'Test' , Fax = '12345657' , Phone = '123456789') ;
insert accObj ;

Cheers