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How to create a batch class to just update the Contacts defined in a trigger?
I have a trigger on Account that updates all child Contact objects but I am hitting a DML error due to number of Contacts on the Account. I want to call a batch class from the trigger if the list of Contacts is larger than 10000 (DML limit).
Is there a way to define the batch class in a way that it just takes the list of Contacts and updates them in batch? This is what I have for the batch and it is giving bunch of errors
This is how I am calling from the trigger
Is there a way to define the batch class in a way that it just takes the list of Contacts and updates them in batch? This is what I have for the batch and it is giving bunch of errors
global class SG_BatchContactUpdate implements Database.Batchable<sObject>{
Map<Id, Contact> contactmap = new Map<Id, Contact>();
global SG_BatchContactUpdate (Map<Id, Contact> contacts) {
contactmap=contacts;
}
global Database.QueryLocator start(Database.BatchableContext BC) {
return DataBase.getQueryLocator([SELECT Id FROM Contact WHERE Id IN : contactmap.keySet()]);
}
//Execute Method.
global void execute(Database.BatchableContext BC) {
}
}
This is how I am calling from the trigger
Database.executeBatch(new SG_BatchContactUpdate(contactsToUpdate));
global class BatchContactUpdate implements Database.Batchable<sObject>{ List <Account> mapAccount = new List <Account> (); List <Contact> contactlist1 = new List <Contact> (); global BatchContactUpdate(List <Account> AccountUpdate) { mapAccount=AccountUpdate; } global Database.QueryLocator start(Database.BatchableContext BC) { return DataBase.getQueryLocator([SELECT Id, AccountID FROM Contact WHERE AccountID IN :mapAccount ]); } global void execute(Database.BatchableContext BC , List <Contact> contactlist) { for (Account acct : mapAccount){ for (Contact con : contactList){ if (con.AccountID == acct.Id){ contactlist1.add(new Contact( Id = con.Id, ); } } } update contactlist1; } global void finish(Database.BatchableContext BC){ } }All Answers
if (contactsToUpdate.isEmpty()){ try{ if (contactsToUpdate.size()>1000) { BatchContact_Update(contactsToUpdate); } else { update contactsToUpdate; }Thanks for the reply, it is not in the loop. I just want to use the batch if the list if more than 10000 because it fails after 10000global class BatchContactUpdate implements Database.Batchable<sObject>{ List <Account> mapAccount = new List <Account> (); List <Contact> contactlist1 = new List <Contact> (); global BatchContactUpdate(List <Account> AccountUpdate) { mapAccount=AccountUpdate; } global Database.QueryLocator start(Database.BatchableContext BC) { return DataBase.getQueryLocator([SELECT Id, AccountID FROM Contact WHERE AccountID IN :mapAccount ]); } global void execute(Database.BatchableContext BC , List <Contact> contactlist) { for (Account acct : mapAccount){ for (Contact con : contactList){ if (con.AccountID == acct.Id){ contactlist1.add(new Contact( Id = con.Id, ); } } } update contactlist1; } global void finish(Database.BatchableContext BC){ } }