Re: JsInterop Shared Model + REST API
Paul,
If I go with T Broyer's suggestion of making User extend JavaScriptObject
then would interop-utils be able to handle an array property User[] users
within User for deserialization?
I'm trying to work around the issue of having a list deserialized as its
correct type. Ultimately I'd like to get my User[] back in browser
JavaScript and be able to do
var users = ...deserialized User[]
users[0].getValue();
where getValue() is a @JsMethod
I'm realizing now that I can't do that unless @JsType(isNative = false
because overlay methods can't be accessed from JavaScript. Doing that
causes a casting issue when using gwt.interop.utils.client.JSON to parse my
incoming JSON string.
On Saturday, November 18, 2017 at 7:02:37 AM UTC-5, Paul Stockley wrote:
>
> gwt-interop-utils shows one way of doing it. This assumes you are OK using
> intermediate collection types.
>
> https://github.com/GWTReact/gwt-interop-utils/blob/master/DOCUMENTATION.md
>
>
>
> On Saturday, November 18, 2017 at 3:52:09 AM UTC-5, Chris L wrote:
>>
>> I'm trying to create a shared model in my GWT 2.8.2 application that I
>> can use both at the server and in GWT client code.
>>
>> My research/Google Fu tells me that this might be possible with JsInterop
>> but since I'm new to JsInterop I'm just not sure.
>> I've done some experiments but I've run into a couple of issues with the
>> biggest being that I can't have my model accessor methods if I make the
>> model native. The compiler tells me that they have to be native or
>> abstract.
>>
>> What I'd like to do with my model is:
>> @JsType
>> public class User {
>> private double id;
>> private String code;
>> private String name;
>>
>> @JsConstructor
>> public User() {
>> }
>>
>> @JsIgnore
>> public User(double id, String code, String name) {
>> this();
>>
>> this.id = id;
>> this.code = code;
>> this.name = name;
>> }
>>
>> ...
>> @JsProperty
>> public double getId() {
>> return id;
>> }
>>
>> @JsProperty
>> public double setId(double id) {
>> this.id = id;
>> }
>> ...
>> }
>>
>> Then in my GWT application I'd like to do this:
>>
>> public class JsTypes {
>>
>> public static native T getJsTypeObject(JavaScriptObject
>> result)/*-{
>> return result;
>> }-*/;
>> }
>>
>> //called after REST response from server
>> private void onCallback(String json) {
>> Console.log("JSON:" + json);
>> JavaScriptObject result = JsonUtils.safeEval(json);
>> User user = JsTypes.getJsTypeObject(result);
>> ...
>> //do something with user
>>}
>>
>> Any ideas or suggestions would be greatly appreciated.
>>
>
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Re: JsInterop Shared Model + REST API
On Saturday, November 18, 2017 at 9:52:09 AM UTC+1, Chris L wrote:
>
> I'm trying to create a shared model in my GWT 2.8.2 application that I can
> use both at the server and in GWT client code.
>
> My research/Google Fu tells me that this might be possible with JsInterop
> but since I'm new to JsInterop I'm just not sure.
> I've done some experiments but I've run into a couple of issues with the
> biggest being that I can't have my model accessor methods if I make the
> model native. The compiler tells me that they have to be native or
> abstract.
>
> What I'd like to do with my model is:
> @JsType
> public class User {
> private double id;
> private String code;
> private String name;
>
> @JsConstructor
> public User() {
> }
>
> @JsIgnore
> public User(double id, String code, String name) {
> this();
>
> this.id = id;
> this.code = code;
> this.name = name;
> }
>
> ...
> @JsProperty
> public double getId() {
> return id;
> }
>
> @JsProperty
> public double setId(double id) {
> this.id = id;
> }
> ...
> }
>
> Then in my GWT application I'd like to do this:
>
> public class JsTypes {
>
> public static native T getJsTypeObject(JavaScriptObject
> result)/*-{
> return result;
> }-*/;
> }
>
> //called after REST response from server
> private void onCallback(String json) {
> Console.log("JSON:" + json);
> JavaScriptObject result = JsonUtils.safeEval(json);
> User user = JsTypes.getJsTypeObject(result);
> ...
> //do something with user
>}
>
> Any ideas or suggestions would be greatly appreciated.
>
If you're going to use the type from a JSON.parse(), you might want to use
a native type mapping to a simple JS Object, rather than exporting a to a
JS class that you'll never actually use (and that could cause
ClassCastException⋅s at runtime).
@JsType(isNative = true, namespace = JsPackage.GLOBAL, name = "Object")
public class User {
@JsProperty private double id;
@JsProperty private String code;
@JsProperty private String name;
@JsIgnore
public User(double id, String code, String name) {
…
}
// Didn't check if you still need the 0-args constructor
@JsOverlay public double getId() { return id; }
@JsOverlay public void setId(double id) { this.id = id; }
…
}
User user = (User) JsonUtils.safeEval(json);
or use elemental2-core & jsinterop-base:
User user = Js.cast(Global.JSON.parse(json));
or a custom JsInterop mapping for JSON.parse:
@JsMethod(namespace = "JSON") private static native User parse(String json);
…
User user = parse(json);
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Re: JsInterop Shared Model + REST API
gwt-interop-utils shows one way of doing it. This assumes you are OK using
intermediate collection types.
https://github.com/GWTReact/gwt-interop-utils/blob/master/DOCUMENTATION.md
On Saturday, November 18, 2017 at 3:52:09 AM UTC-5, Chris L wrote:
>
> I'm trying to create a shared model in my GWT 2.8.2 application that I can
> use both at the server and in GWT client code.
>
> My research/Google Fu tells me that this might be possible with JsInterop
> but since I'm new to JsInterop I'm just not sure.
> I've done some experiments but I've run into a couple of issues with the
> biggest being that I can't have my model accessor methods if I make the
> model native. The compiler tells me that they have to be native or
> abstract.
>
> What I'd like to do with my model is:
> @JsType
> public class User {
> private double id;
> private String code;
> private String name;
>
> @JsConstructor
> public User() {
> }
>
> @JsIgnore
> public User(double id, String code, String name) {
> this();
>
> this.id = id;
> this.code = code;
> this.name = name;
> }
>
> ...
> @JsProperty
> public double getId() {
> return id;
> }
>
> @JsProperty
> public double setId(double id) {
> this.id = id;
> }
> ...
> }
>
> Then in my GWT application I'd like to do this:
>
> public class JsTypes {
>
> public static native T getJsTypeObject(JavaScriptObject
> result)/*-{
> return result;
> }-*/;
> }
>
> //called after REST response from server
> private void onCallback(String json) {
> Console.log("JSON:" + json);
> JavaScriptObject result = JsonUtils.safeEval(json);
> User user = JsTypes.getJsTypeObject(result);
> ...
> //do something with user
>}
>
> Any ideas or suggestions would be greatly appreciated.
>
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JsInterop Shared Model + REST API
I'm trying to create a shared model in my GWT 2.8.2 application that I can
use both at the server and in GWT client code.
My research/Google Fu tells me that this might be possible with JsInterop
but since I'm new to JsInterop I'm just not sure.
I've done some experiments but I've run into a couple of issues with the
biggest being that I can't have my model accessor methods if I make the
model native. The compiler tells me that they have to be native or
abstract.
What I'd like to do with my model is:
@JsType
public class User {
private double id;
private String code;
private String name;
@JsConstructor
public User() {
}
@JsIgnore
public User(double id, String code, String name) {
this();
this.id = id;
this.code = code;
this.name = name;
}
...
@JsProperty
public double getId() {
return id;
}
@JsProperty
public double setId(double id) {
this.id = id;
}
...
}
Then in my GWT application I'd like to do this:
public class JsTypes {
public static native T getJsTypeObject(JavaScriptObject
result)/*-{
return result;
}-*/;
}
//called after REST response from server
private void onCallback(String json) {
Console.log("JSON:" + json);
JavaScriptObject result = JsonUtils.safeEval(json);
User user = JsTypes.getJsTypeObject(result);
...
//do something with user
}
Any ideas or suggestions would be greatly appreciated.
--
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Users" group.
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