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What is the return type of Trigger.Old and Trigger.OldMap in Salesforce?
What is the return type of Trigger.Old and Trigger.OldMap in Salesforce?
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6 Replies
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Hello Sanjana,
Trigger.old: Returns a list of the old versions of the sObject records. Trigger.old should return a type ofList<sObject__c>.Note that this sObject list is only available in the update and delete triggers.
Trigger.oldMap: A map of IDs to the old versions of the sObject records. Trigger.oldMap should return a type of Map<Id, sObject__c>.Note that this map is only available in the update and delete triggers.
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Trigger.oldMap & Trigger.New are returning the same information on after update trigger
Trigger.old: Returns a list of the old versions of the sObject records.
Note that this sObject list is only available in the update and delete triggers.Trigger.oldMap: A map of IDs to the old versions of the sObject records.
Note that this map is only available in the update and delete triggers.
suppose you have a custom object Custom_obj__cExample:
Trigger.old means it is a List<Custom_obj__c>
andExample:
Trigger.oldMap means it is a map<Id, Custom_obj__c>THanks
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Hi,
Trigger.old - It returns a list of sobject records.
Trigger.oldMap - It returns a map of Id vs Sobject record.
Hope this helps.
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Hello sanjana,
Trigger.old will return list of sObject like {name:'xyz', id:'sasdasdabcgyaASD'}, and
Trigger.OldMap will return Map of ID,sObject like (id:'asdmsudbhjSAD':{name:'xys',AccountId:'asdasdasdDSA'})
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Trigger.old: Returns a list of the old versions of the sObject records. Trigger.old should return a type ofList<sObject__c>.Note that this sObject list is only available in the update and delete triggers.
Trigger.oldMap: A map of IDs to the old versions of the sObject records. Trigger.oldMap should return a type of Map<Id, sObject__c>.Note that this map is only available in the update and delete triggers.
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Trigger.old: Returns a list of the old versions of the sObject records.
Note that this sObject list is only available in the update and delete triggers.Trigger.oldMap: A map of IDs to the old versions of the sObject records.
Note that this map is only available in the update and delete triggers.
suppose you have a custom object Custom_obj__c
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