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BindingScope enum

Scope for binding values

Signature:

export declare enum BindingScope 

Enumeration Members

Member Value Description
APPLICATION `"Application"` Application scope
CONTEXT `"Context"`
REQUEST `"Request"` Request scope
SERVER `"Server"` Server scope
SINGLETON `"Singleton"` The binding provides a value as a singleton within the context hierarchy (the owning context and its descendants). The value is calculated only once for the owning context and cached for subsequential uses. Child contexts share the same value as their ancestors. For example, with the following context hierarchy: - `app` (with a binding `'b1'` that produces sequential values 0, 1, ...) - req1 - req2 1. `0` is the singleton for `app` afterward - app.get('b1') ==> 0 (always) 2. `'b1'` is resolved in `app`, reuse it for `req1` - req1.get('b1') ==> 0 (always) 3. `'b1'` is resolved in `app`, reuse it for `req2` - req2.get('b1') ==> 0 (always)
TRANSIENT `"Transient"` The binding provides a value that is calculated each time. This will be the default scope if not set. For example, with the following context hierarchy: - `app` (with a binding `'b1'` that produces sequential values 0, 1, ...) - req1 - req2 Now `'b1'` is resolved to a new value each time for `app` and its descendants `req1` and `req2`: - app.get('b1') ==> 0 - req1.get('b1') ==> 1 - req2.get('b1') ==> 2 - req2.get('b1') ==> 3 - app.get('b1') ==> 4