#batch class

[sunilkhuwal]

How to call Future methods from Batch?

Yes you heard it/seen it right, we cannot make call to the future methods directly from the batch, if you do then, the batch will fail with error that you cannot make call to the future methods from Batch. 00:03:41:690 EXCEPTION_THROWN [41]|System.AsyncException: Future method cannot be called from a future or batch method:…

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[salesforceblog]

Fire Platform Events from Batch Apex Classes

Automatic Event Generator Batch Class

public with sharing class BatchLeadConvert implements Database.Batchable<SObject>,Database.RaisesPlatformEvents{

   private final String CONVERTED_STATUS = [SELECT Id, MasterLabel FROM LeadStatus WHERE IsConverted=true LIMIT 1].MasterLabel;

   public Database.QueryLocator start(Database.BatchableContext ctx){        return Database.getQueryLocator([SELECT Id FROM Lead WHERE ConvertedContactId = null]);    }

   public void execute(Database.BatchableContext ctx, List<Lead> records){        List<Database.LeadConvert> leadConverts = new List<Database.LeadConvert>();        for(Lead record:records){            Database.LeadConvert lc = new Database.LeadConvert();            lc.setConvertedStatus(CONVERTED_STATUS);            lc.setLeadId(record.Id);

           leadConverts.add(lc);        }        Database.convertLead(leadConverts, true);    }

   public void finish(Database.BatchableContext ctx){

   } }

Event Subscriber Trigger

trigger BatchApexErrorTrigger on BatchApexErrorEvent (after insert) { List<BatchLeadConvertErrors__c> errorLogList = new List<BatchLeadConvertErrors__c>();    for(BatchApexErrorEvent evt : Trigger.new){     BatchLeadConvertErrors__c errorLog = new BatchLeadConvertErrors__c();        errorLog.AsyncApexJobId__c = evt.AsyncApexJobId;        errorLog.Records__c = evt.JobScope;        errorLog.StackTrace__c = evt.StackTrace;        errorLogList.add(errorLog);    }    insert errorLogList; }

Note : Here  BatchLeadConvertErrors__c is a custom object we used to track the error logs.