David Defour - Université de Perpignan

Drawbacks of JSONification
• Sends state, not behavior, of object
–So, properties that are derived from other properties will be
inconsistent on client if other properties are changed
• Example: Java “Circle” class
–getRadius
• Returns instance variable
–getArea
• Returns Math.PI*radius*radius
• JSONified instance
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jeudi 26 janvier 12
–Example
• Make new Circle(10). Pass to JSONObject, call toString
• Result: { "radius": 10.0, "area": 314.15927…}
–Problem
• If client-side code changes radius, area doesn’t match