Readonly
collectionThe collection the receiver is operating on.
Readonly
queryThe query the receiver is operating with.
Readonly
queryThe named arguments for the query.
Evicts all documents that match the query generated by the preceding function chaining.
An array promise containing the IDs of the documents that were evicted.
Limits the number of documents that get returned when querying a collection for matching documents.
A cursor that you can chain further function calls and then either get the matching documents immediately or get updates about them over time.
The maximum number of documents that will be returned.
Enables you to listen for changes that occur in a collection locally.
The handler
block will be called when local changes are
made to documents that match the query generated by the chain of operations
that precedes the call to observeLocal().
The returned LiveQuery object must be kept in scope for as long as
you want the provided handler
to be called when an update occurs.
This won't subscribe to receive changes made remotely by others and so it
will only fire updates when a local change is made. If you want to receive
remotely performed updates as well, you'll have to create a subscription
via subscribe() with the
relevant query. The returned LiveQuery object must be kept in scope
for as long as you want the provided eventHandler
to be called when an
update occurs.
A LiveQuery object that must be kept in scope for as long as you want to keep receiving updates.
A closure that will be called every time there is a transaction committed to the store that involves modifications to documents matching the query in the collection this method was called on.
Enables you to listen for changes that occur in a collection locally and to signal when you are ready for the live query to deliver the next event.
The handler
block will be called when local changes are
made to documents that match the query generated by the chain of operations
that precedes the call to observeLocalWithNextSignal().
The returned LiveQuery object must be kept in scope for as long as
you want the provided handler
to be called when an update occurs.
This won't subscribe to receive changes made remotely by others and so it
will only fire updates when a local change is made. If you want to receive
remotely performed updates as well, you'll have to create a subscription
via subscribe() with the
relevant query. The returned LiveQuery object must be kept in scope
for as long as you want the provided eventHandler
to be called when an
update occurs.
A LiveQuery object that must be kept in scope for as long as you want to keep receiving updates.
A closure that will be called every time there is a transaction committed to the store that involves modifications to documents matching the query in the collection that this method was called on.
Offsets the resulting set of matching documents.
This is useful if you aren't interested in the first N matching documents
for one reason or another. For example, you might already have queried the
collection and obtained the first 20 matching documents and so you might
want to run the same query as you did previously but ignore the first 20
matching documents, and that is when you would use offset
.
A cursor that you can chain further function calls and then either get the matching documents immediately or get updates about them over time.
The number of matching documents that you want the eventual resulting set of matching documents to be offset by (and thus not include).
Removes all documents that match the query generated by the preceding function chaining.
An array promise containing the IDs of the documents that were removed.
Sorts the documents that match the query provided in the preceding
find
-like function call.
A cursor that you can chain further function calls and then either get the matching documents immediately or get updates about them over time.
Optional
direction: SortDirectionSpecify whether you want the sorting order to be
Ascending
or Descending
.
Enables you to subscribe to changes that occur in a collection remotely.
Having a subscription acts as a signal to other peers that you are interested in receiving updates when local or remote changes are made to documents that match the query generated by the chain of operations that precedes the call to subscribe().
The returned Subscription object must be kept in scope for as long as you want to keep receiving updates.
A Subscription object that must be kept in scope for as long as you want to keep receiving updates for documents that match the query specified in the preceding chain.
Updates documents that match the query generated by the preceding function chaining.
An UpdateResultsMap promise mapping document IDs to lists of update results that describe the updates that were performed for each document.
A closure that gets called with all of the documents matching the query. The documents are instances of MutableDocument so you can call update-related functions on them.
These objects are returned when using
find
-like functionality on Collection.They allow chaining of further query-related functions to do things like add a limit to the number of documents you want returned or specify how you want the documents to be sorted and ordered.
You can either call exec() on the object to get an array of documents as an immediate return value, or you can establish either a live query or a subscription, which both work over time.
A live query, established by calling observeLocal(), will notify you every time there's an update to a document that matches the query you provided in the preceding
find
-like call.A subscription, established by calling subscribe(), will act as a signal to other peers that the device connects to that you would like to receive updates from them about documents that match the query you provided in the preceding
find
-like call.Update and remove functionality is also exposed through this object.