I'm trying to convert a Javascript array in Java to a Java array. I tested this example here, but the type "NativeArray" was not recognized: http://stackoverflow.com/a/1433489/975097
How can I get the NativeArray type to be recognized?
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Friday, January 13, 2012
Converting a Javascript array to a Java array
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java,
javascript,
javax.script
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I would recommend Doug Crockfords JSON-java library. This allows you to convert json to native JAVA objects.
ReplyDeletePer this answer it looks like your best bet is to write a JavaScript converter function which transforms the native JavaScript array into a Java array using Rhino's Java binding functionality. Note that you'll have to take some care to use the correct type when converting the individual elements.
ReplyDeleteI would simply use json-lib and parse the array that way.
ReplyDeletefor example see How to parse a JSON and turn its values into an Array?
Rhino offers this:
ReplyDeletehttp://www.mozilla.org/rhino/tutorial.html#usingJSObjs
Also Scriptable interface offers get() and set() so you can easily enumerate the properties of an object and add it to an array:
Scriptable arr = (Scriptable) result;
Object [] array = new Object[arr.getIds().length];
for (Object o : arr.getIds()) {
int index = (Integer) o;
array[index] = arr.get(index, null);
}
Same thing but not using NativeArray since that appears to be a Rhino specific thing. You could easily drop a breakpoint and see what type of object you were given then downcast to that. It's some sort of JS Array implementation that's pretty close to NativeArray.