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Nati Kiren
create record if does not exist
Hello,
I am newhere and I'm trying to develop a page that receive a record id of a custom object check if a record with this id exsist, if not creat one.
can anyone show how to do it.
Thanks
I am newhere and I'm trying to develop a page that receive a record id of a custom object check if a record with this id exsist, if not creat one.
can anyone show how to do it.
Thanks
A Small Quick Code to make you understand the bascis ..
Use the <apex:inputText> for fields and Save button will call the action SaveResults. Let me know if you need any clearance over Visualforce Page as well.
Important :
If this is what you where looking for then please mark it as a solution for others benefits.
Thank You
System.NullPointerException: Attempted to upsert a null list
Just FYI
The execution of a trigger will sometimes generate an error message like the following:
execution of [EventName] caused by: System.NullPointerException: Attempt to de-reference a null object: Trigger.[TriggerName]: line [XX], column [XX]
This error is caused by a line of code that is trying to use an object that has not been instantiated, or an object's attribute that has not been initialized.
For example, if the get() method in the following code cannot find the value oldAccount.Name in the map accountMap, the object newAccount will be null, and trying to use it will generate this error message:
trigger SampleTrigger on Account (before insert, before update) {
integer i = 0;
Map<String, Account> accountMap = new Map<String, Account>{};
for (Account acct : System.Trigger.new)
accountMap.put(acct.Name, acct);
for (Account oldAccount : [SELECT Id, Name, Site FROM Account WHERE Name IN :accountMap.KeySet()]) {
Account newAccount = accountMap.get(oldAccount.Name);
i = newAccount.Site.length;
}
Also in this example, if the field Site was left empty, trying to use it as above will generate the error message as well.
The solution is to make sure the object and/or the attribute to be used is not null. In this example, the code needs to be modified as follows:
Account newAccount = accountMap.get(oldAccount.Name);
if (newAccount != null)
if (newAccount.Site != null)
i = newAccount.Site.length();
or an exception handling routine can be used, such as
Account newAccount = accountMap.get(oldAccount.Name);
try {
i = newAccount.Site.length();
} catch (System.NullPointerException e) {
e1 = e; // can be assigned to a variable to display a user-friendly error message
}
For more information on handling exceptions, check the Apex Language Reference, under "Using Exception Methods", or "Using Exception Variables".
For more information on initializing variables, look under Chapter 2, "Language Constructs", in the topics "Variables", and "Case Sensitivity".
Regards
Pramod