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Tyler HarrisTyler Harris 

Error Implementing Database.batchable

I'm getting the following error in my batchable class. I want to pull all training records with an expiration date older than today and then ultimately mass update their Training Status to expired. I plan on making it schedulable. 

I'm getting the following error:

BatchUpdateTraining: Class must implement the global interface method: Iterable<Training__c> start(Database.BatchableContext) from Database.Batchable<Training__c>

Apex:
global class BatchUpdateTraining implements Database.Batchable<Training__c>{
    public String Query;

    public Database.QueryLocator start(Database.BatchableContext BC) 
    {   
        Query = 'SELECT id,Training_Status__c,Expiry_Date__c FROM Training__c WHERE Expiry_Date__c > Today';
        return Database.getQueryLocator(Query);
    }

    public void execute(Database.BatchableContext BC, List<Training__c> scope) 
    {   
        for (Training__c ac : scope) 
        {
        
        }
        update scope;
    }

    public void finish(Database.BatchableContext BC) { }    
}


 
Best Answer chosen by Tyler Harris
sfdc Beginnersfdc Beginner
Hi Tyler,

Update your Code Like this, it will work.

global class BatchUpdateTraining implements Database.Batchable<sobject>{

     public String Query;

 

     public Database.QueryLocator start(Database.BatchableContext BC)  {  

        Query = 'SELECT id,Training_Status__c,Expiry_Date__c FROM Training__c WHERE Expiry_Date__c > Today';

        return Database.getQueryLocator(Query);

    }



     public void execute(Database.BatchableContext BC, List<Training__c> scope) {  

        for (Training__c ac : scope)  {

       

       }

           update scope;

     }

 

    public void finish(Database.BatchableContext BC) { }   

   }


If this solves your Problem, Mark it as the Best Answer.

Thanks,
SFDC Beginner
 

All Answers

sfdc Beginnersfdc Beginner
Hi Tyler,

Update your Code Like this, it will work.

global class BatchUpdateTraining implements Database.Batchable<sobject>{

     public String Query;

 

     public Database.QueryLocator start(Database.BatchableContext BC)  {  

        Query = 'SELECT id,Training_Status__c,Expiry_Date__c FROM Training__c WHERE Expiry_Date__c > Today';

        return Database.getQueryLocator(Query);

    }



     public void execute(Database.BatchableContext BC, List<Training__c> scope) {  

        for (Training__c ac : scope)  {

       

       }

           update scope;

     }

 

    public void finish(Database.BatchableContext BC) { }   

   }


If this solves your Problem, Mark it as the Best Answer.

Thanks,
SFDC Beginner
 
This was selected as the best answer
naresh singhalnaresh singhal
What is the purpose of using <sobject> in Database.Batchable<sobject> ?