equals method

[fixje]

I have implemented equals methods for JSONObject and JSONArray in order to achieve duplicate-elimination in Sets. It is just a first step, beacuse there is still a hashCode() method missing. I didn't find an nice way to realize that for now.

Hope I could help

Best Regards,
Markus

[douglascrockford]

What happens if a JSON object contains a cycle?
What happens if the other object contains an extra property?

[fixje]

What happens if the other object contains an extra property?
dumb mistake of mine... additionally checking the if the length of both keysets (respectively length of both arrays) is the same solves this

What happens if a JSON object contains a cycle?
There is no general solution for this issue if you consider equality as the equality of referenced objects.
One could make the same assumption like for toString()
"Warning: This method assumes that the data structure is acyclical."
But equals() is too often used implicitly, such that making this assumption unavoidably leads to problems.
In fact, it doesn't make sense to go on in this direction.