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96 lines
2.8 KiB
Plaintext
96 lines
2.8 KiB
Plaintext
title: SyncAdaptorModules
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tags: internals
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! Introduction
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SyncAdaptorModules encapsulate storage mechanisms that can be used by the SyncMechanism. Two examples are:
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* The TiddlyWebAdaptor interfaces with servers compatible with TiddlyWeb's HTTP API, such as TiddlyWeb itself and TiddlyWiki5's built-in ServerMechanism.
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* The LocalFileAdaptor interfaces with file systems with an API compatible with node.js's `fs` module
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SyncAdaptorModules are represented as JavaScript tiddlers with the field `module-type` set to `syncadaptor`.
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! Exports
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The following properties should be exposed via the `exports` object:
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|!Property |!Description |
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|adaptorClass |The JavaScript class for the adaptor |
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Nothing should be exported if the adaptor detects that it isn't capable of operating successfully (eg, because it only runs on either the browser or the server, or because a dependency is missing).
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! Adaptor Module Methods
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Adaptor modules must handle the following methods.
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!! `Constructor(syncer)`
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Initialises a new adaptor instance.
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|!Parameter |!Description |
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|syncer |Syncer object that is using this adaptor |
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!! `getTiddlerInfo(tiddler)`
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Gets the supplemental information that the adaptor needs to keep track of for a particular tiddler. For example, the TiddlyWeb adaptor includes a `bag` field indicating the original bag of the tiddler.
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|!Parameter |!Description |
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|tiddler |Target tiddler |
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Returns an object storing any additional information required by the adaptor.
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!! `getStatus(callback)`
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Retrieves status information from the server.
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|!Parameter |!Description |
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|callback |Callback function invoked with parameters `err,isLoggedIn,username` |
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!! `login(username,password,callback)`
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Attempts to login to the server with specified credentials.
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|!Parameter |!Description |
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|username |Username |
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|password |Password |
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|callback |Callback function invoked with parameter `err` |
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!! `logout(callback)`
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Attempts to logout of the server.
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|!Parameter |!Description |
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|callback |Callback function invoked with parameter `err` |
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!! `getSkinnyTiddlers(callback)`
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Retrieves a list of skinny tiddlers from the server.
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|!Parameter |!Description |
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|callback |Callback function invoked with parameter `err,tiddlers`, where `tiddlers` is an array of tiddler field objects |
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!! `saveTiddler(tiddler,callback)`
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Saves a tiddler to the server.
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|!Parameter |!Description |
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|tiddler |Tiddler to be saved |
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|callback |Callback function invoked with parameter `err,adaptorInfo,revision` |
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!! `loadTiddler(title,callback)`
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Loads a tiddler from the server.
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|!Parameter |!Description |
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|title |Title of tiddler to be retrieved |
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|callback |Callback function invoked with parameter `err,tiddlerFields` |
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!! `deleteTiddler(title,callback)`
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Delete a tiddler from the server.
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|!Parameter |!Description |
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|title |Title of tiddler to be deleted |
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|callback |Callback function invoked with parameter `err` |
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