Contents
- 1 What happens when a sobject field is null?
- 2 Can a sobject field be set or not set?
- 3 When does an expression with sobject field evaluate to true?
- 4 How to change field type and deploy when field is referenced in code?
- 5 Do you need to check empty sobject fields in apex?
- 6 Where to find dynamic get methods in sobject?
What happens when a sobject field is null?
If the field is false or null, the expression evaluates to false. This example code shows an expression that checks if the IsActive field of a Campaign object is null. Because this expression always evaluates to false, the code in the if statement is never executed.
Can a sobject field be set or not set?
Once you have converted the generic SObject record into a Contact, Lead, or Account, you can modify its fields accordingly: SObject fields can be initially set or not set (unset); unset fields are not the same as null or blank fields.
How can I access a sobject field in apex?
As in Java, SObject fields can be accessed or changed with simple dot notation. For example: System-generated fields, such as Created By or Last Modified Date, cannot be modified. If you try, the Apex runtime engine generates an error.
When does an expression with sobject field evaluate to true?
An expression with SObject fields of type Boolean evaluates to true only if the SObject field is true. If the field is false or null, the expression evaluates to false.
How to change field type and deploy when field is referenced in code?
1 thanks for the answer, would you recommend creating a temporary field, changing all the code references to the temporary field in order to change the existing field type, and restoring the code references to the changed field afterward? – AlexandreJMar 24 ’14 at 20:10
How to set null to objects in Java?
If you passed an ArrayList to a method then list = null will have no effect if there is a live reference to the list somewhere eg in the calling code. If you call list.clear() anywhere in the code the references to the objects from this list will be nulled.
Do you need to check empty sobject fields in apex?
I’m writing some apex code that needs to check to see if a contact has an account assigned via the AccountId field. Do I need to check for an empty or null value? as in? Use NULL. Just FYI …. for String fields, you should use ” check and for number/Id fields, you should use NULL check.
Where to find dynamic get methods in sobject?
Check all dynamic get* methods in the Sobject instance methods docs. Thanks for contributing an answer to Salesforce Stack Exchange! Please be sure to answer the question. Provide details and share your research!