how to call sling model only once

问题

Lets say I have a component A and component B. In component A, html file I am writing

   data-sly-use.head="com.Mymodel"

now in Component B also I need to use the same class, so in html file I have written

   data-sly-use.head="com.Mymodel"

Component A and Component B can be available in a page or may not be available at a time. What I want is that if both Component A and B present in a page then I do not want to initialise Sling model (com.Mymodel) twice. I would like to initialise only one time. How to do it?

回答1:

Take a look at Sling Model Caching. This does exactly what you want, as long as it is adaptable from Resource.

https://sling.apache.org/documentation/bundles/models.html#caching

You only have to specify cache=true in the Model-annotation.

@Model(adaptable = SlingHttpServletRequest.class, cache = true)
public class ModelClass {
   ...
}

来源：https://stackoverflow.com/questions/53204646/how-to-call-sling-model-only-once