Set.single()
Create a Set containing a single provided element.
Description
Creates a Set containing a single element. The element is passed to the method as an argument.
You can use an event source to track changes to a Set containing a single document. These event sources only emit events when the document changes.
You typically use Set.single() to create a Set from a Document
for a document event source.
Examples
The following uses single() to creates a Set from a single document.
// Uses the `Product` collection's `byName()` index and
// the `first()` method to get a single document.
let product = Product.byName("cups").first()
Set.single(product){
data: [
{
id: "111",
coll: Product,
ts: Time("2099-03-21T19:40:45.430Z"),
name: "cups",
description: "Translucent 9 Oz, 100 ct",
price: 698,
stock: 100,
category: Category("123")
}
]
}You can call set.eventsOn() or
set.eventSource() on the Set
to create a document event sources.
let product = Product.byName("cups").first()
Set.single(product).eventSource()The query returns an event source:
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