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author's profile photo Vincent Dechandon
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Vincent Dechandon

Problem when retrieving metadata in Additional Properties after the user binded a datasource

Posted on Dec 05, 2014 at 04:37 PM 14 Views

Hi guyz.

After a user binds a data source to a custom component, I have a function that is launched.

Inside this function, I'm doing a

datasource_metadata = that.callRuntimeHandler("getMetadataAsString");

To get the metadata from the component

this.getMetadataAsString = function() {

return JSON.stringify(that.resultSetOwner()); // returns the resultSet-typed property

}

The problem is that the getter seems to be faster than the setter.

So when this.getMetadataAsString is called, the metadata value has been not set yet inside the resultSetOwner property.

What can I do to go through this problem (no answer based on setTimeout please 😊).

PS : I read this post :

but in the example given, the developer seems to use hard-coded data in case of he got no metadata coming back.

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    author's profile photo Karol Kalisz
    Karol Kalisz
    Posted on Dec 05, 2014 at 04:46 PM
    2

    what is the method "resultSetOwner" doing?

    as long there is no datasource assigned to the component, the data and metadata are not set, meaning undefined, this is why Mike sets some "dummy" values for this.

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    • Vincent Dechandon Michael Howles
      Dec 05, 2014 at 08:37 PM

      Thanks for your reply.

      It was the answer I feared, but eh 😭.

      I think I'll go for a 10 setInterval call I think, and thus if nothing is found, well I'll accept the fact that no data source has been bounded.

      Anyway, the matter of time before the set executes and the get retrieves the value is very short, if you delay the runtimeHandler for 0.5s, seems like the data are always already set (maybe it depends of the size of the data source).

      Imo, the component part misses a callRuntimeHandler that would work the same than APS, but in the other way around.

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