Dmitri Blinov created JEXL-222:
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Summary: The ability to declare indexed property getter/setter in
customised JexlArithmetic implementation
Key: JEXL-222
URL: https://issues.apache.org/jira/browse/JEXL-222
Project: Commons JEXL
Issue Type: Improvement
Affects Versions: 3.0
Reporter: Dmitri Blinov
Priority: Minor
At the moment we have the ability to declare a specific getter/setter method in
customized JexlArithmetic class that will be used by Jexl engine when engine
tries to get access to a property of some object. This is great extension point
of the Jexl but I have come to a situation where I need the same technics to be
applied to indexed properties. For example I'm scripting org.w3c.dom.Element
object by setting its attributes via its
{code}Element.setAttribute(java.lang.String name, java.lang.String value)
{code} method. In Jexl I use standard indexed property access syntax like the
following: {code} node.attribute.id = "12345"; {code} The problem lies with the
last argument of the setAttribute method which is of String class. And for Jexl
standard indexed property setter to work I should always remember that in
script I need to cast specified property value to a string, which is
error-prone and lacks, in my understanding, scripting easiness. I see the
solution as to introduce custom indexed property setter in more generalized
form, accepting Object type as a value so it could cast a value to String
before calling {{Element.setAttribute}}
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