Notes
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.
trigger myAccountTrigger on Account(before insert) {
for(Account acc: Trigger.New){
acc.Description ='Test Description';
}
if(Trigger.isExecuting){
System.debug(Trigger.New[0].Name + ' is created. ');
}
else {
System.debug('Trigger did not execute');
}
}
Account ac = new Account(Name='Blue Moon Hotel');
insert ac;
22:22:40:153 USER_DEBUG [8]|DEBUG|Blue Moon Hotel is created.
isInsert:
Returns true if this trigger was fired due to an insert operation, from the Salesforce user interface, Apex, or the API.
trigger myAccountTrigger on Account(before insert,
before update,
before delete,
after insert,
after update,
after delete,
after undelete ) {
if(Trigger.isInsert){
System.debug(Trigger.New[0].Name + ' is created. ');
}
}
Account ac = new Account(Name='White House');
insert ac;
USER_DEBUG [11]|DEBUG|White House is created.
isUpdate:
Returns true if this trigger was fired due to an update operation, from the Salesforce user interface, Apex, or the API.
trigger myAccountTrigger on Account(before insert,
before update,
before delete,
after insert,
after update,
after delete,
after undelete )
{
if(Trigger.isInsert){
System.debug(Trigger.New[0].Name + ' is created. ');
}
if(Trigger.isUpdate){
System.debug(Trigger.New[0].Name + ' has been updated. ');
}
}
Account ac =[SELECT Id, Name FROM Account WHERE Name='White House' LIMIt 1];
update ac;
22:30:20:168 USER_DEBUG [13]|DEBUG|White House has been updated.
isDelete:
Returns true if this trigger was fired due to a delete operation, from the Salesforce user interface, Apex, or the API.
trigger myAccountTrigger on Account(before insert,
before update,
before delete,
after insert,
after update,
after delete,
after undelete )
{
if(Trigger.isInsert){
System.debug(Trigger.New[0].Name + ' is created.');
}
if(Trigger.isUpdate){
System.debug(Trigger.New[0].Name + ' has been updated.');
}
if(Trigger.isDelete){
System.debug(Trigger.Old[0].Name + ' has been deleted.');
}
}
Account ac =[SELECT Id, Name FROM Account WHERE Name='White House' LIMIT 1];
delete ac;
22:36:01:262 USER_DEBUG [16]|DEBUG|White House has been deleted.
isBefore:
Returns true if this trigger was fired before any record was saved.
trigger myAccountTrigger on Account(before insert,
before update,
before delete,
after insert,
after update,
after delete,
after undelete )
{
if(Trigger.isInsert){
System.debug(Trigger.New[0].Name + ' has been created.(INSERT)');
}
if(Trigger.isUpdate){
System.debug(Trigger.New[0].Name + ' has been updated.');
}
if(Trigger.isDelete){
System.debug(Trigger.Old[0].Name + ' has been deleted.');
}
if(Trigger.isBefore){
System.debug(Trigger.New[0].Name + ' has been created.(BEFORE)');
}
}
Account ac = new Account(Name='New Kingdom');
insert ac;
22:39:04:209 USER_DEBUG [10]|DEBUG|New Kingdom has been created.(INSERT)
22:39:04:120 USER_DEBUG [19]|DEBUG|New Kingdom has been created.(BEFORE)
isAfter:
Returns true if this trigger was fired after all records were saved.
trigger myAccountTrigger on Account(before insert,
before update,
before delete,
after insert,
after update,
after delete,
after undelete )
{
if(Trigger.isInsert){
System.debug(Trigger.New[0].Name + ' has been created.(INSERT)');
}
if(Trigger.isUpdate){
System.debug(Trigger.New[0].Name + ' has been updated.');
}
if(Trigger.isDelete){
System.debug(Trigger.Old[0].Name + ' has been deleted.');
}
if(Trigger.isBefore){
System.debug(Trigger.New[0].Name + ' has been created.(BEFORE)');
}
if(Trigger.isAfter){
System.debug(Trigger.New[0].Name + ' has been created.(AFTER)');
}
}
Account ac = new Account(Name='AssistRX');
insert ac;
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.
trigger myAccountTrigger on Account(before insert,
before update,
before delete,
after insert,
after update,
after delete,
after undelete )
{
if(Trigger.isInsert){
System.debug(Trigger.New[0].Name + ' has been created.(INSERT)');
}
if(Trigger.isUpdate){
System.debug(Trigger.New[0].Name + ' has been updated.');
}
if(Trigger.isDelete){
System.debug(Trigger.Old[0].Name + ' has been deleted.');
}
if(Trigger.isBefore){
System.debug(Trigger.New[0].Name + ' has been created.(BEFORE)');
}
if(Trigger.isAfter){
System.debug(Trigger.New[0].Name + ' has been created.(AFTER)');
}
if(Trigger.isundelete){
System.debug(Trigger.New[0].Name + ' has been undeleted.');
}
}
List<Account> acList =[SELECT Id, Name, isdeleted
FROM ACCOUNT
WHERE isdeleted=true AND Name='White House'
ALL ROWS];
undelete acList;
newMap:
newMap and oldMap:
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.
oldMap: A map of IDs to the old versions of the sObject records. This map is only available in update and delete triggers.
trigger AccountTrigger on Account (before update) {
System.debug(Trigger.oldMap.values()[0].Name + ' is updated to: ' + Trigger.newMap.values()[0].Name);
}
Account ac = [SELECT Id, Name from Account WHERE Name ='Blue Hotel' LIMIT 1];
ac.Name='New Blue Hotel';
update ac;
trigger AccountTrigger on Account (before update) {
for(Account ac : Trigger.oldMap.values()){
System.debug(ac.name);
}
for(Id acId : Trigger.oldMap.keySet()){
System.debug(acId);
}
}
Account ac = [SELECT Id, Name from Account WHERE Name ='White House' LIMIT 1];
ac.Name='New Blue Hotel';
update ac;
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.
