Working with Array(ROArrayType & ROStructType) in JavaScript

Data Abstract
1

Hello,

I have an RO struct:

// Struct: ChronicleKeyValueStrings
__namespace.ChronicleKeyValueStrings = function ChronicleKeyValueStrings() {
    this.Key = {dataType : "AnsiString", value : null};
    this.Value = {dataType : "AnsiString", value : null};
};
__namespace.ChronicleKeyValueStrings.prototype = new RemObjects.SDK.ROStructType();
__namespace.ChronicleKeyValueStrings.prototype.constructor = __namespace.ChronicleKeyValueStrings;
RemObjects.SDK.RTTI["ChronicleKeyValueStrings"] = __namespace.ChronicleKeyValueStrings;

and I have an array of these items:

// Array: ChronicleKeyValueStringsArray

__namespace.ChronicleKeyValueStringsArray = function ChronicleKeyValueStringsArray() {
RemObjects.SDK.ROArrayType.call(this);
this.elementType = "ChronicleKeyValueStrings";
};
__namespace.ChronicleKeyValueStringsArray.prototype = new RemObjects.SDK.ROArrayType();
__namespace.ChronicleKeyValueStringsArray.prototype.constructor = __namespace.ChronicleKeyValueStringsArray;
RemObjects.SDK.RTTI["ChronicleKeyValueStringsArray"] = __namespace.ChronicleKeyValueStringsArray;

I need to know how to represent my data so that it is a valid return object. Here is what I have but it does not appear to be working:

	var cvs = new ChronicleKeyValueStrings();
	cvs.Key = "Version";
	cvs.Value = "3.0";
	var cvsl = new ChronicleKeyValueStringsArray();
	cvsl.writeTo(cvs);

Not sure what I am missing here either?

Thanks again!
Todd

2

This one

var cvsl = new ChronicleKeyValueStringsArray();
cvsl.writeTo(cvs);

should be

var cvsl = new ChronicleKeyValueStringsArray();
cvsl.items.push(cvs);

items here is an JavaScript array so it supports all JS array methods like push, map etc

3

So that makes sense, however console.log(typeof cvsl); displays object and produces this error:

BinMessage.write: Unknown type of Key - undefined

When I test the values of cvs.Key and cvs.Value they come back correct.

cvs = new ChronicleKeyValueStrings();
cvs.Key = "Version";
cvs.Value = "3.0";
cvsl = new ChronicleKeyValueStringsArray();
console.log("cvs type: " + typeof cvs);
console.log("cvs.Key: " + cvs.Key);
console.log("cvs.Value: " + cvs.Value);

cvsl.items.push(cvs);
console.log("cvsl type: " + typeof cvsl);
console.log("cvsl: " + cvsl.items[0].Key);

Results:
cvs type: object
cvs.Key: Version
cvs.Value: 3.0
cvsl type: object
cvsl: Version

The error appears when I pass cvsl even though it is clearly assigned. This is what the service is expecting:

msg.write(“ClientData”, “ChronicleKeyValueStringsArray”, ClientData);

and when I do this:

console.log("cvsl: " + cvsl.items[0].Key);

I get this:

Results:
cvsl: Version

if I want to pass into a function ChronicleKeyValueStringsArray I would just use cvsl correct?

Thanks again,
Todd

4

Hello

cvs.Key is a complex object containing info about data type and value of that type. It should be assigned as

cvs.Key.value = "Version";

Same goes for other fields of complex structure.

When in doubt you can do something like

var cvs = new ChronicleKeyValueStrings();
console.log(JSON.stringify(cvs));
cvs.Key = "Version";
console.log(JSON.stringify(cvs));

So you’ll the object internal structure (f.e. for the code above you would notice that the Key initially had some internal structure removed by assignment)

5

Anton,

I want to thank you for your time. I know I need to know JavaScript better and that I am working on. But you got me through a proof of concept and I appreciate that!

Todd