Justin Edelson created SLING-7015:
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Summary: Add Utility Method to ModelFactory to help proper model
creation from child resources in a request context
Key: SLING-7015
URL: https://issues.apache.org/jira/browse/SLING-7015
Project: Sling
Issue Type: Improvement
Components: Extensions
Reporter: Justin Edelson
At present, it is somewhat complex to generate Sling Model objects (or really,
any adapter class) from an included resource. This is especially true when the
adaptable is the SlingHttpServletRequest object.
There are a few different cases which are problematic:
1. When you want to inject an object adapted from a child resource where the
adaptable is a request object (i.e. you want to override the
request.getResource() to the child resource)
2. When you want to inject an object adapted from a child resource (regardless
of the adaptable) and the model class depends upon the Script Bindings.
In the first case, this currently requires creating a wrapper request. The
second case is more complex to solve as (to do it correctly) requires
re-invoking all of the BindingsValuesProviders (which entails creating a fake
ScriptEngine).
To solve both issues, I would like to add a new method named
{{getModelFromWrappedRequest}}. Parameters would be
{{SlingHttpServletRequest}}, {{Resource}}, {{Class}}.
This method would create a wrapped request with the passed resource, set the
bindings to a new object and reinvoke the BVPs.
Patch to follow, but I wanted to file this early to get any feedback.
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