private void RunQuery()
{
// The objective-c version takes a format string and a variadic argument
// list for substititon, but we only support sending an unformatted string
// down. Marshalling variadic arguments is tricky....
// Just do your formatting on the C# side.
// Note that passing a bad predicate string will throw an exception
// Pick a random name out of the hat
var queryStr = string.Format("name = '{0}'", names[UnityEngine.Random.Range(0, names.Length)]);
Debug.Log(string.Format("Running query with predicate ({0})", queryStr));
// Queries are made with NSPredicate which sorta like SQL and sorta
// like regular expressions.
// See https://nshipster.com/nspredicate/ for a quick intro to the kinds
// of queries you can run. Were just going to do a simple key,value search
CKQuery query = new CKQuery("Person", NSPredicate.PredicateWithFormat(queryStr));
// The second argument here is the container to search in. Unless you
// are using custom containers, you'll want to pass null for the
// default container
database.PerformQuery(query, null, OnQueryComplete);
}
private IEnumerator RunQueryCo()
{
Debug.Log("waiting 5 seconds before running query...");
yield return(new WaitForSeconds(5f));
Debug.Log("fetching sorted...");
// Sort - alphabetically for the primary key, reverse alphabetically for the second
var primarySort = new CKQuery(recordType, NSPredicate.PredicateWithValue(true));
primarySort.SortDescriptors = new NSSortDescriptor[]
{
new NSSortDescriptor(primaryFieldKey, true),
new NSSortDescriptor(secondaryFieldKey, false)
};
database.PerformQuery(primarySort, null, OnQuery);
}
