This table is a comprehensive list of all context variables available for triggers.
| Variable | Usage |
|---|---|
| isExecuting | Returns true if the current context for the Apex code is a trigger, not a Visualforce page, a Web service, or an executeanonymous() API call. |
| isInsert | Returns true if this trigger was fired due to an insert operation, from the Salesforce user interface, Apex, or the API. |
| isUpdate | Returns true if this trigger was fired due to an update operation, from the Salesforce user interface, Apex, or the API. |
| isDelete | Returns true if this trigger was fired due to a delete operation, from the Salesforce user interface, Apex, or the API. |
| isBefore | Returns true if this trigger was fired before any record was saved. |
| isAfter | Returns true if this trigger was fired after all records were saved. |
| isUndelete | Returns true if this trigger was fired after a record is recovered from the Recycle Bin. This recovery can occur after an undelete operation from the Salesforce user interface, Apex, or the API. |
| new | Returns a list of the new versions of the sObject records.This sObject list is only available in insert, update, and undelete triggers, and the records can only be modified in before triggers. |
| newMap | A map of IDs to the new versions of the sObject records.This map is only available in before update, after insert, after update, and after undelete triggers. |
| old | Returns a list of the old versions of the sObject records.This sObject list is only available in update and delete triggers. |
| oldMap | A map of IDs to the old versions of the sObject records.This map is only available in update and delete triggers. |
| operationType | Returns an enum of type System.TriggerOperation corresponding to the current operation.Possible values of the System.TriggerOperation enum are: BEFORE_INSERT, BEFORE_UPDATE, BEFORE_DELETE,AFTER_INSERT, AFTER_UPDATE, AFTER_DELETE, and AFTER_UNDELETE. If you vary your programming logic based on different trigger types, consider using the switch statement with different permutations of unique trigger execution enum states. |
| size | The total number of records in a trigger invocation, both old and new. |