The UpdateManager is a helper object for a store. Just as a Fetcher provides the store with the ability to read and write, the Update Manager provides functionality for making small patches in real time, and also looking out for concurrent updates from other agents
Object of namespaces
Index of objects for coordinating incoming and outgoing patches
We want to start counting websocket notifications to distinguish the ones from others from our own.
Tests whether a file is editable. Files have to have a specific annotation that they are machine written, for safety. We don't actually check for write access on files.
The method string SPARQL or DAV or LOCALFILE or false if known, undefined if not known.
This is suitable for an initial creation of a document.
Reloads a document.
Fast and cheap, no metadata. Measure times for the document. Load it provisionally. Don't delete the statements before the load, or it will leave a broken document in the meantime.
Requests a now or future action to refresh changes coming downstream This is designed to allow the system to re-request the server version, when a websocket has pinged to say there are changes. If the websocket, by contrast, has sent a patch, then this may not be necessary.
Sets up websocket to listen on
There is coordination between upstream changes and downstream ones so that a reload is not done in the middle of an upstream patch. If you use this API then you get called when a change happens, and you have to reload the file yourself, and then refresh the UI. Alternative is addDownstreamChangeListener(), where you do not have to do the reload yourself. Do mot mix them.
kb contains the HTTP metadata from previous operations
This high-level function updates the local store iff the web is changed successfully.
Deletions, insertions may be undefined or single statements or lists or formulae (may contain bnodes which can be indirectly identified by a where clause).
why property of each statement must be the same and give the web document to be updated.
Statement or statements to be deleted.
Statement or statements to be inserted.
called as callbackFunction(uri, success, errorbody) OR returns a promise
Likely deprecated, since this lib no longer deals with browser extension
return a statemnet updating function
This does NOT update the statement. It returns an object which includes function which can be used to change the object of the statement.