The enumerator callback returns what is used for eg Object.getOwnPropertyNames(queryObj)
If you want queryObj["foo"] to return an array, just create on in the getter callback and set it as return value. The getter takes a PropertyCallbackInfo<Value> and Array drives from Value Best Jochen Abhishek Singh <[email protected]> schrieb am Mi., 29. Juni 2016, 05:40: > I'm exposing C++ objects in javascript as a map using > NamedPropertyHandlerConfiguration. So operations like below in javascript > are intercepted by Getter/Setter/Deleter callbacks as defined in v8 binding > code. > > var obj = beer-sample["test_key2"]; // "beer-sample" is the keyword I'm > exposing to JS from v8 binding code, it's encapsulating a C++ object > beer-sample["test_key1"] = "test_value1"; > delete beer-sample["test_key3"]; > > Next step in this use-case I'm looking at is to enumerate result-set > obtained. I've looked at GenericNamedPropertyEnumeratorCallback but that > doesn't look to be helpful in this case. Signature looks like below: > > void GenericNamedPropertyEnumeratorCallback(PropertyCallbackInfo<Array>& > info); > > It doesn't allow to pass Local<Name> property to it like > Getter/Setter/Deleter callback and I understand Enumerator Callback's > purpose is different by looking at the unit tests within V8 code. > > === > > Here is what I'm specifically after: > > In javascript a user could write something like this: > > ``` > var queryResult = queryObj["select * from `beer-sample`;"] > > var resultLength = queryResult.length; > > for (var i = 0; i < resultLength; i++) { > //Do some computation and bookkeeping on each row > log(queryResult[i]); > } > ``` > > So queryResult needs to of type PropertyCallbackInfo<Array> type and I'm > not sure correct way to do this. What would be the recommended to achieve > this? > > Thanks, > Abhishek > -- > Thanks, > > Abhishek Singh > > -- > -- > v8-users mailing list > [email protected] > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
