You want to write a trigger that creates a new record as part of its processing logic; however, that record may then cause another trigger to fire, which in turn causes another to fire, and so on. You don\’t know how to stop that recursion.
Example:
Suppose there is a scenario where in one trigger perform update operation, which results in invocation of second trigger and the update operation in second trigger acts as triggering criteria for trigger one.
Solution:
{
public static boolean isFutureUpdate;
}
Trigger:
trigger updateSomething on Account (after insert, after update)
{
/* This trigger performs its logic when the call is not from @future */
if(Utility.isFutureUpdate != true)
{
Set<Id> idsToProcess = new Se<Id>();
for(Account acct : trigger.new)
{
if(acct.NumberOfEmployees > 500)
{
idsToProcess.add(acct.Id);
}
}
/* Sending Ids to @future method for processing */
futureMethods.processLargeAccounts(idsToProcess);
}
}
public class FutureMethods
{
@future
public static void processLargeAccounts(Set<Id> acctIDs)
{
List<Account> acctsToUpdate = new List<Account>();
/* isFutureUpdate is set to true to avoid recursion */
Utility.isFutureUpdate = true;
update acctsToUpdate;
}
}
Cheers!!!
