iCloud.recordQuery()

Overview

Retrieves existing records based on a defined query and passes the results to the onComplete listener function as iCloudRecordEvent.recordArray.

Gotchas

You must pass a predicate to filter records. Predicates are formed according to Apple's documentation.

Syntax

iCloud.recordQuery( params )

Parameter Reference

Valid keys for the params table include:

• type — Required string value indicating the type of records to be queried.

• query — Required string value indicating the query. Use "TRUEPREDICATE" to retrieve all records, or consult Apple's documentation for more sophisticated query options.

• onComplete — Required listener function to be invoked with an iCloudRecordEvent.

• queryParams — Optional table value used to search for certain values and escape them with Apple's predicate mechanism. See Apple's documentation for more information.

• database — Optional string value indicating the database to query.

• containerId — Optional string value indicating a specific iCloud Container to query. Do not pass this parameter if you have only one iCloud Container associated with your app.

Example

local json = require( "json" )

function queryResults( event )

    if event.recordArray then
        print( "Total records retrieved: ", #event.recordArray )
        if #event.recordArray > 0 then
            for r = 1,#event.recordArray do
                print( "----------" )
                print( json.prettify( event.recordArray[r]:table() ) )
                print( "----------" )
            end
        end
    else
        print( "No records found!" )
    end
end

iCloud.recordQuery(
    {
        type = "people",
        query = "TRUEPREDICATE",
        onComplete = queryResults
    }
)