Konrad Windszus created SLING-4178:
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Summary: ValueMapDecorator.convertToArray will never return null
(even if type conversion does not work)
Key: SLING-4178
URL: https://issues.apache.org/jira/browse/SLING-4178
Project: Sling
Issue Type: Bug
Components: API
Affects Versions: API 2.4.2
Reporter: Konrad Windszus
Currently the {{ValueMapDecorator}} will never return {{null}} in case type
conversion fails and an array type was requested.
This is neither the case if the underlying map did not contain multiple values
(and it was converted a single element array), nor if the underlying array was
of a different (incompatible) type.
For the first case a single element array with value null is returned, for the
second case an array is returned which only contains null values (as many as
original values).
I would propose the following change:
# if array was requested and underlying data is an array: return null instead
of array with null items if no item could be converted to the requested array
type.
# if array was requested and underlying data is an array: only return those
items which could be converted to the requested type (leave out the others)
# if array was requested and underlying data is not an array: return null if
value could not be converted to the requested array type.
This should still be in sync with the behaviour described in SLING-662.
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