Re: GWT native to long conversion
Thanks!
суббота, 1 августа 2015 г., 18:07:56 UTC-4 пользователь Alberto Mancini
написал:
>
> Hello,
> in your example you are returning id (a numeric value) as a string ant
> this is the origin of the unexpected behavior.
> Indeed this works
>
> public final native String _getIdString()/*-{ return ''+this.id; }-*/;
>
> as well as returning a java numeric value:
>
> public final native int _getIdInt()/*-{ return this.id; }-*/;
> (see
> http://www.gwtproject.org/doc/latest/DevGuideCodingBasicsJSNI.html#passing-javascript
>
> for details)
>
> Anyway, in general, is probably not a good idea to use Long for a numeric
> 'native' value
> because in js you cannot represent a long number (see f.e.
> http://stackoverflow.com/questions/17320706/javascript-long-integer).
>
> Hope it helps.
>
> Alberto.
>
>
>
> On Sat, Aug 1, 2015 at 3:38 PM Nikolay Prokofiev > wrote:
>
>> Hi.
>>
>> I'm trying to convert js native number to GWT Long and send it over
>> gwt-rpc. But I got very weird results..
>>
>> public class gwtbugEntryPoint implements EntryPoint {
>> @Override
>> public void onModuleLoad() {
>> String data = "{\"type\":\"upd\", \"id\":123}";
>> ServerEvent serverEvent = JsonUtils.safeEval(data);
>> RootPanel.get().add(new HTML("GWT id="+serverEvent.getId()));
>> }
>> }class ServerEvent extends JavaScriptObject {
>> protected ServerEvent() {
>> }
>> public final native String getType()/*-{ return this.type; }-*/;
>> public final Long getId(){
>> String idStr = _getId();
>> GWT.log("idSTr:" + idStr);
>> Long id = new Long(idStr);
>> GWT.log("id:"+id);
>> return id;}
>> public final native String _getId()/*-{ return this.id; }-*/;}
>>
>> console output:
>>
>> idSTr:123
>>
>> id:0
>>
>> Can anyone explain me, how that could happen?
>>
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>
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Re: GWT native to long conversion
instead of
Long id = new Long(idStr);
try
Long id = Long.parseLong(idStr);
On Sun, Aug 2, 2015 at 3:37 AM, Alberto Mancini
wrote:
> Hello,
> in your example you are returning id (a numeric value) as a string ant
> this is the origin of the unexpected behavior.
> Indeed this works
>
> public final native String _getIdString()/*-{ return ''+this.id; }-*/;
>
> as well as returning a java numeric value:
>
> public final native int _getIdInt()/*-{ return this.id; }-*/;
> (see
> http://www.gwtproject.org/doc/latest/DevGuideCodingBasicsJSNI.html#passing-javascript
> for details)
>
> Anyway, in general, is probably not a good idea to use Long for a numeric
> 'native' value
> because in js you cannot represent a long number (see f.e.
> http://stackoverflow.com/questions/17320706/javascript-long-integer).
>
> Hope it helps.
>
> Alberto.
>
>
>
> On Sat, Aug 1, 2015 at 3:38 PM Nikolay Prokofiev
> wrote:
>
>> Hi.
>>
>> I'm trying to convert js native number to GWT Long and send it over
>> gwt-rpc. But I got very weird results..
>>
>> public class gwtbugEntryPoint implements EntryPoint {
>> @Override
>> public void onModuleLoad() {
>> String data = "{\"type\":\"upd\", \"id\":123}";
>> ServerEvent serverEvent = JsonUtils.safeEval(data);
>> RootPanel.get().add(new HTML("GWT id="+serverEvent.getId()));
>> }
>> }class ServerEvent extends JavaScriptObject {
>> protected ServerEvent() {
>> }
>> public final native String getType()/*-{ return this.type; }-*/;
>> public final Long getId(){
>> String idStr = _getId();
>> GWT.log("idSTr:" + idStr);
>> Long id = new Long(idStr);
>> GWT.log("id:"+id);
>> return id;}
>> public final native String _getId()/*-{ return this.id; }-*/;}
>>
>> console output:
>>
>> idSTr:123
>>
>> id:0
>>
>> Can anyone explain me, how that could happen?
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Google Web Toolkit" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to google-web-toolkit+unsubscr...@googlegroups.com.
>> To post to this group, send email to google-web-toolkit@googlegroups.com.
>> Visit this group at http://groups.google.com/group/google-web-toolkit.
>> For more options, visit https://groups.google.com/d/optout.
>>
> --
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>
--
Nagin Kothari
Co-founder,
Zilicus Solutions
www.zilicus.com
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Re: GWT native to long conversion
Hello,
in your example you are returning id (a numeric value) as a string ant
this is the origin of the unexpected behavior.
Indeed this works
public final native String _getIdString()/*-{ return ''+this.id; }-*/;
as well as returning a java numeric value:
public final native int _getIdInt()/*-{ return this.id; }-*/;
(see
http://www.gwtproject.org/doc/latest/DevGuideCodingBasicsJSNI.html#passing-javascript
for details)
Anyway, in general, is probably not a good idea to use Long for a numeric
'native' value
because in js you cannot represent a long number (see f.e.
http://stackoverflow.com/questions/17320706/javascript-long-integer).
Hope it helps.
Alberto.
On Sat, Aug 1, 2015 at 3:38 PM Nikolay Prokofiev
wrote:
> Hi.
>
> I'm trying to convert js native number to GWT Long and send it over
> gwt-rpc. But I got very weird results..
>
> public class gwtbugEntryPoint implements EntryPoint {
> @Override
> public void onModuleLoad() {
> String data = "{\"type\":\"upd\", \"id\":123}";
> ServerEvent serverEvent = JsonUtils.safeEval(data);
> RootPanel.get().add(new HTML("GWT id="+serverEvent.getId()));
> }
> }class ServerEvent extends JavaScriptObject {
> protected ServerEvent() {
> }
> public final native String getType()/*-{ return this.type; }-*/;
> public final Long getId(){
> String idStr = _getId();
> GWT.log("idSTr:" + idStr);
> Long id = new Long(idStr);
> GWT.log("id:"+id);
> return id;}
> public final native String _getId()/*-{ return this.id; }-*/;}
>
> console output:
>
> idSTr:123
>
> id:0
>
> Can anyone explain me, how that could happen?
>
> --
> You received this message because you are subscribed to the Google Groups
> "Google Web Toolkit" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to google-web-toolkit+unsubscr...@googlegroups.com.
> To post to this group, send email to google-web-toolkit@googlegroups.com.
> Visit this group at http://groups.google.com/group/google-web-toolkit.
> For more options, visit https://groups.google.com/d/optout.
>
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GWT native to long conversion
Hi.
I'm trying to convert js native number to GWT Long and send it over
gwt-rpc. But I got very weird results..
public class gwtbugEntryPoint implements EntryPoint {
@Override
public void onModuleLoad() {
String data = "{\"type\":\"upd\", \"id\":123}";
ServerEvent serverEvent = JsonUtils.safeEval(data);
RootPanel.get().add(new HTML("GWT id="+serverEvent.getId()));
}
}class ServerEvent extends JavaScriptObject {
protected ServerEvent() {
}
public final native String getType()/*-{ return this.type; }-*/;
public final Long getId(){
String idStr = _getId();
GWT.log("idSTr:" + idStr);
Long id = new Long(idStr);
GWT.log("id:"+id);
return id;}
public final native String _getId()/*-{ return this.id; }-*/;}
console output:
idSTr:123
id:0
Can anyone explain me, how that could happen?
--
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