Don’t miss the AEM Skill Exchange in SF on Nov 14—hear from industry leaders, learn best practices, and enhance your AEM strategy with practical tips.
SOLVED
What is the difference between @inject and @Valuemapvalue.
1 Accepted Solution
Correct answer by
Lets explore with an example of @inject v/s @ValueMapValue
@inject is a general-purpose annotation that retrieves values from various injectors, while @ValueMapValue is an injector-specific annotation designed to fetch values from the ValueMap injector.
When an injected value is exclusively available from a single injector, @inject and @ValueMapValue will behave the same. However, if a property can be provided by multiple injectors (e.g., script-binding and ValueMap), they may inject different values.
It’s advisable to prefer injector-specific annotations like @ValueMapValue or @ChildResource over @inject. This is because value injection occurs at runtime, and using @inject can introduce ambiguity, requiring the framework to make educated guesses. When using @ValueMapValue, especially in the context of retrieving properties from the ValueMap, the process is automatic, resulting in less code to write and increased clarity.
For more details on how annotations affect performance, refer to Sling Model Performance by Jörg Hoh
Aanchal Sikka
Correct answer by
Lets explore with an example of @inject v/s @ValueMapValue
@inject is a general-purpose annotation that retrieves values from various injectors, while @ValueMapValue is an injector-specific annotation designed to fetch values from the ValueMap injector.
When an injected value is exclusively available from a single injector, @inject and @ValueMapValue will behave the same. However, if a property can be provided by multiple injectors (e.g., script-binding and ValueMap), they may inject different values.
It’s advisable to prefer injector-specific annotations like @ValueMapValue or @ChildResource over @inject. This is because value injection occurs at runtime, and using @inject can introduce ambiguity, requiring the framework to make educated guesses. When using @ValueMapValue, especially in the context of retrieving properties from the ValueMap, the process is automatic, resulting in less code to write and increased clarity.
For more details on how annotations affect performance, refer to Sling Model Performance by Jörg Hoh
Aanchal Sikka
Related Conversations
