Query

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Query

Query objects are the javascript variables generated for every Query created under a datasource

Run
Each query object contains a run function that is used to execute the query. The run function is asynchronous by nature and can be chained using the callbacks in the function signature.
Signature
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run(onSuccess: Function, onError: Function, params: Object): void
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Arguments
Argument Name
Description
onSuccess
The function to be executed when the run method succeeds
onError
The function to be executed when the run method fails
params
The additional params to be passed to the run method
Passing Params to Run
Most Queries read values directly from entities as global variables. In some cases such as running a query inside a loop, parameters may need to be passed to the query with values contextual to the execution. This can be achieved using the params argument of the run signature. Params sent to a query can be accessed using the this keyword
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{{ this.params.key }}
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onSuccess
The onSuccess Function is run when a query is run successfully. The function returns the response of the query and the params passed to it in the callback arguments.
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onSuccess(response, params): void
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onError
The onError Function is run when a query execution fails. The function returns the response of the query and the params passed to it.
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onError(response, params): void
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Data
Each query stores the data from its latest run inside its data property. This property is populated only if the query successfully executes and can be accessed as
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{{ Query1.data }}
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The data type of this property depends on the data

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Contents

Run

Signature

Arguments

Passing Params to Run

onSuccess

onError

Data