In Salesforce we can use serialize and deserialize methods to pass required data from trigger to future method.
Simple Example below.
Apex Trigger Code:
trigger updatePhone on Account (after update) {
String triggerNewList = JSON.serialize(Trigger.new);
String oldMap = JSON.serialize(Trigger.oldMap);
UpdatePhoneOnContact.updatePhone(triggerNewList,oldMap);
}
ApexClass Code:
public class UpdatePhoneOnContact {
public static void updatePhone(String triggerNewList,String oldMap) {
Set <Id> accountIdSet = new Set <Id>();
Map <Id,String> accountMap = new Map <Id,string> ();
List<Account> lstAccount = (List<Account>) JSON.deserialize(triggerNewList,List<Account>.class);
Map<id,Account> accountOldMap = (Map<id,Account>) JSON.deserialize(oldMap,Map<id,Account>.class);
for(Account acc:lstAccount) {
if(accountOldMap.get(acc.Id).phone != acc.phone) {
accountIdSet.add(acc.id);
}
if(acc.phone != null) {
accountMap.put(acc.id,acc.phone);
}
}
List <contact> contactList = new List <Contact>();
for(Contact con:[select id,accountId,Phone from contact where accountId in:accountIdSet]) {
if(accountMap != null && accountMap.containsKey(con.accountId)) {
con.phone = accountMap.get(con.accountId);
contactList.add(con);
}
}
if(contactList.size() >0) {
update contactList;
}
}
}
Enjoy Coding...
