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Shravan Kumar 71Shravan Kumar 71 

Maintaining State across Batch job

Hello Ohana,

If I understood correctly, if I pass 1000 records in the below batch, it will divide across 5 sub batch(200 each). The List<CSVGenerator.Values>  will hold value only for the final batch. What I am looking at is the List<CSVGenerator.Values>  should store the values of all the 5 sub batches which I will be passing to another method in my FINISH method. Need help here.
  
public class BatchToGenerateCSVForMarin implements Database.Batchable<sObject>, Database.Stateful {
    
    public List<CSVGenerator.Values> indiaGoogleValList = new List<CSVGenerator.Values>();
    public List<CSVGenerator.Values> indiaFacebookValList = new List<CSVGenerator.Values>();
    
    public Database.QueryLocator start(Database.BatchableContext BC){
        String query = 'SELECT ID,Email,Status,CreatedDate,Lead_GEO__c,GCLID__c,MKWID__c,MSCLICKID__c,FBCLID__c FROM Lead WHERE RecordType.Name=\'B2C\' AND Status!=\'Duplicate\'';
        return Database.getQueryLocator(query);
    }
    
    public void execute(Database.BatchableContext BC, List<Lead>scope){
        try{
            Set<Id> indiaLeadID = new Set<Id>();
            Set<Id> ROWLeadID = new Set<Id>();
            Set<Id> USLeadID = new Set<Id>();
            for(Lead l : scope){
                if(l.Lead_GEO__c!=null && l.Lead_GEO__c =='INDIA'){
                    indiaLeadID.add(l.Id);
                }
            }
            
            Map<String,Integer> googleIDIndiaMap = new Map<String,Integer>();
            Map<String,Integer> marinIDIndiaMap = new Map<String,Integer>();
            
            List<AggregateResult> leadMarketingIDAgg = [SELECT Count(ID)id, GCLID__c googleID, MKWID__c marinID, MSCLICKID__c bingID, FBCLID__c facebookID FROM Lead WHERE ID IN:indiaLeadID Group By GCLID__c,MKWID__c,MSCLICKID__c,FBCLID__c];
            
            for(AggregateResult agg : leadMarketingIDAgg){
                if((String)agg.get('googleID')!=null){
                    googleIDIndiaMap.put((String)agg.get('googleID'), (Integer)agg.get('id'));
                }
                if((String)agg.get('marinID')!=null){
                    marinIDIndiaMap.put((String)agg.get('marinID'), (Integer)agg.get('id'));
                }
            }
            
            for(String s : googleIDIndiaMap.keySet()){
                CSVGenerator.Values val = new CSVGenerator.Values();
                val.recordDate = String.valueof(System.today());
                val.conversionType = 'Lead';
                val.conversions = string.valueof(googleIDIndiaMap.get(s));
                val.revenue = '0';
                val.currencyCode = '';
                val.comments = s;
                indiaGoogleValList.add(val);
            }
            
            for(String s : marinIDIndiaMap.keySet()){
                CSVGenerator.Values val = new CSVGenerator.Values();
                val.recordDate = String.valueof(System.today());
                val.conversionType = 'Lead';
                val.conversions = string.valueof(marinIDIndiaMap.get(s));
                val.revenue = '0';
                val.currencyCode = '';
                val.comments = s;
                indiaMarinValList.add(val);
            }
    }
    
    public void finish(Database.BatchableContext BC){
        if(indiaGoogleValList.size() > 0){
            CSVGenerator.generateCsv('Marin', indiaGoogleValList, 'Google', 'INDIA');
        }       
        if(indiaMarinValList.size() > 0){
            CSVGenerator.generateCsv('Marin', indiaMarinValList, 'Marin', 'INDIA');
        }
    } 
}

 
Ravi Dutt SharmaRavi Dutt Sharma
I see that you have already implemented Database.Stateful and that should do the trick to maintain state across batches. I have done some minor tweak in your code, please see if this helps.
  
public class BatchToGenerateCSVForMarin implements Database.Batchable<sObject>, Database.Stateful {
    
    public List<CSVGenerator.Values> indiaGoogleValList;
    public List<CSVGenerator.Values> indiaFacebookValList;
    
    public BatchToGenerateCSVForMarin(){
        this.indiaGoogleValList = new List<CSVGenerator.Values>();
        this.indiaFacebookValList = new List<CSVGenerator.Values>();
    }

    public Database.QueryLocator start(Database.BatchableContext BC){
        String query = 'SELECT ID,Email,Status,CreatedDate,Lead_GEO__c,GCLID__c,MKWID__c,MSCLICKID__c,FBCLID__c FROM Lead WHERE RecordType.Name=\'B2C\' AND Status!=\'Duplicate\'';
        return Database.getQueryLocator(query);
    }
    
    public void execute(Database.BatchableContext BC, List<Lead>scope){
        try{
            Set<Id> indiaLeadID = new Set<Id>();
            Set<Id> ROWLeadID = new Set<Id>();
            Set<Id> USLeadID = new Set<Id>();
            for(Lead l : scope){
                if(l.Lead_GEO__c!=null && l.Lead_GEO__c =='INDIA'){
                    indiaLeadID.add(l.Id);
                }
            }
            
            Map<String,Integer> googleIDIndiaMap = new Map<String,Integer>();
            Map<String,Integer> marinIDIndiaMap = new Map<String,Integer>();
            
            List<AggregateResult> leadMarketingIDAgg = [SELECT Count(ID)id, GCLID__c googleID, MKWID__c marinID, MSCLICKID__c bingID, FBCLID__c facebookID FROM Lead WHERE ID IN:indiaLeadID Group By GCLID__c,MKWID__c,MSCLICKID__c,FBCLID__c];
            
            for(AggregateResult agg : leadMarketingIDAgg){
                if((String)agg.get('googleID')!=null){
                    googleIDIndiaMap.put((String)agg.get('googleID'), (Integer)agg.get('id'));
                }
                if((String)agg.get('marinID')!=null){
                    marinIDIndiaMap.put((String)agg.get('marinID'), (Integer)agg.get('id'));
                }
            }
            
            for(String s : googleIDIndiaMap.keySet()){
                CSVGenerator.Values val = new CSVGenerator.Values();
                val.recordDate = String.valueof(System.today());
                val.conversionType = 'Lead';
                val.conversions = string.valueof(googleIDIndiaMap.get(s));
                val.revenue = '0';
                val.currencyCode = '';
                val.comments = s;
                indiaGoogleValList.add(val);
            }
            
            for(String s : marinIDIndiaMap.keySet()){
                CSVGenerator.Values val = new CSVGenerator.Values();
                val.recordDate = String.valueof(System.today());
                val.conversionType = 'Lead';
                val.conversions = string.valueof(marinIDIndiaMap.get(s));
                val.revenue = '0';
                val.currencyCode = '';
                val.comments = s;
                indiaMarinValList.add(val);
            }
    }
    
    public void finish(Database.BatchableContext BC){
        if(indiaGoogleValList.size() > 0){
            CSVGenerator.generateCsv('Marin', indiaGoogleValList, 'Google', 'INDIA');
        }       
        if(indiaMarinValList.size() > 0){
            CSVGenerator.generateCsv('Marin', indiaMarinValList, 'Marin', 'INDIA');
        }
    } 
}