Catching 500 internal server errors on Query send

[lesfreeman]

Hello,
I'm trying to catch server errors and display a custom error message.
Unfortunetly, I can't seem to catch the error on the JS side. Here's
the short version of my code:

try{
var query = new google.visualization.Query("http://some-server.com/
api");
query.send(function(response){
//some stuff gets done here
});
}catch(e){
console.log(e.name+" "+e.message);
}

Unfortunately, the error does not get caught. I my JS console I get:

Uncaught Error: google.visualization.Query: Internal Server Error
[500]

If I throw a custom error in the try block, it gets caught.

Any ideas?

Thanks
Les

[Jinji]

The query.send() function doesn't throw exceptions. Instead, in your response function (the one you pass to query.send), you should do:

if (response.isError()) {

  alert(response.getMessage());

  return;

}

dataTable = response.getDataTable();

I hope that helps.

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[lesfreeman]

I've tried that method as well:

var query = new google.visualization.Query("http://some-server.com/
api");

console.log("about to send query");
query.send(function(response){
console.log("in response function");
if (response.isError()) {
alert(response.getMessage());
return;
}
var data = response.getDataTable();
...
});

The "about to send query" message is logged to the console but the "in
response function is not. Instead, I still get the Uncaught Error
message:

about to send query

Uncaught Error: google.visualization.Query: Internal Server Error

[500] -
default,browserchart,columnchart,barchart,piechart,table,gauge,annotatedtimeline
+en_US.I.js:151

Same thing if I move the console.log to after the if statement:

query.send(function(response){
if (response.isError()) {
alert(response.getMessage());
return;
}
console.log("in response function");
var data = response.getDataTable();
...
});

Really appreciate your time and your help!
Les

On Jun 27, 6:33 am, Jinji <ji...@google.com> wrote:
> The query.send() function doesn't throw exceptions. Instead, in your
> response function (the one you pass to query.send), you should do:
>
> if (response.isError()) {
>   alert(response.getMessage());
>   return;}
>
> dataTable = response.getDataTable();
>
> I hope that helps.
>

> > google-visualizati...@googlegroups.com<google-visualization- api%2Bunsu...@googlegroups.com>
> > .

[ChartMan]

Trying looking at the network console and see what is the response coming back from your server, maybe its malformed.

ChartMan

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[h]

Please note that the error mechanism is based on a server that is using the charts data source library and returning a valid JSON response (error or not).

If there is a communication error the JavaScript callback is not called. However, Query does have a timeout for each request and after 30 seconds you will see an error

"request timed out".

HTH

ChartMan

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> > To unsubscribe from this group, send email to

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