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What is namespace in Salesforce Apex?
A namespace is a 1–15 character alphanumeric identifier that distinguishes your package and its contents from other packages in your customer’s org. A namespace is assigned to a package at the time that it’s created, and can’t be changed. When creating a namespace, use something that’s useful and informative to users.
Why namespace is used in Salesforce?
The Salesforce application supports the use of namespace prefixes . Namespace prefixes are used in managed AppExchange packages to differentiate custom object and field names from names used by other organizations. When creating a namespace, use something that’s useful and informative to users.
How do you define a namespace?
A namespace is a declarative region that provides a scope to the identifiers (the names of types, functions, variables, etc) inside it. Namespaces are used to organize code into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries.
How to use the system namespace in apex?
To solve this problem, add the System namespace prefix to the class name to explicitly instruct the Apex runtime to call the query method on the built-in Database class in the System namespace: Sorry, the document you are looking for doesn’t exist or could not be retrieved.
When does apex default to the custom class?
If your organization contains Apex classes that you’ve defined with the same name as a built-in class, the Apex runtime defaults to your custom class and calls the methods in your class. Let’s take a look at the following example.
Is there a prefix to the sobjecttype in apex?
To invoke a method that is defined in a managed package, Apex allows fully qualified identifiers of the form: In API version 34.0 and later, Schema.DescribeSObjectResult on a custom SObjectType includes map keys prefixed with the namespace, even if the namespace is that of currently executing code.
Is there code to run after a call to apex?
Any code defined following the call to apex.message.alert will run before the user presses OK. Therefore code to run after the user closes the dialog must be done from within the callback, as shown in the example. If either of the following two pre requisites are not met, the function falls back to using the browser’s built-in alert: