Support for other storage backends for larger data storage

Makefile

@@ -1,7 +1,8 @@
 compile:
-	coffee -c backbone.dualstorage.coffee spec/*.coffee
-	coffee -cbo spec backbone.dualstorage.coffee
-	cat amd.header.js spec/backbone.dualstorage.js amd.footer.js > backbone.dualstorage.amd.js
+	coffee -cj backbone.dualstorage.js backbone.dualstorage.adapters.coffee backbone.dualstorage.coffee
+	coffee -c spec/*.coffee
+	coffee -cbj spec/backbone.dualstorage.js backbone.dualstorage.adapters.coffee backbone.dualstorage.coffee
+	cat amd.header.js backbone.dualstorage.js amd.footer.js > backbone.dualstorage.amd.js
 
 infinite: compile
 	read # (press Enter to recompile)

SpecRunner.html

@@ -9,6 +9,7 @@
   <script type="text/javascript" src="lib/jquery-1.9.1.min.js"></script>
   <script type="text/javascript" src="lib/underscore.js"></script>
   <script type="text/javascript" src="lib/backbone-1.1.0.js"></script>
+  <script type="text/javascript" src="lib/sticky-2.9.js"></script>
   <script type="text/javascript" src="lib/jasmine-1.3.1/jasmine.js"></script>
   <script type="text/javascript" src="lib/jasmine-1.3.1/jasmine-html.js"></script>
   <script type="text/javascript" src="spec/spec_helper.js"></script>
@@ -23,6 +24,7 @@
   <script type="text/javascript" src="spec/backbone_extensions_spec.js"></script>
   <script type="text/javascript" src="spec/integration_spec.js"></script>
   <script type="text/javascript" src="spec/bugs_spec.js"></script>
+  <script type="text/javascript" src="spec/stickystorage_spec.js"></script>
 
   <script type="text/javascript">
     (function() {

backbone.dualstorage.adapters.coffee

@@ -0,0 +1,97 @@
+# Async storage adapters classes.
+
+class LocalStorageAdapter
+  # Reference implementation with LocalStorage.
+  constructor: (name) ->
+    @name = name || 'Backbone.dualStorage.LocalStorage'
+    @store = localStorage
+
+  initialize: ->
+    $.Deferred().resolve()
+
+  set: (key, value) ->
+    @store.setItem key, JSON.stringify value
+    $.Deferred().resolve value
+
+  get: (key) ->
+    $.Deferred().resolve JSON.parse @store.getItem key
+
+  remove: (key) ->
+    @store.removeItem key
+    $.Deferred().resolve()
+
+  clear: ->
+    @store.clear()
+    $.Deferred().resolve()
+
+
+class LawnchairStorageAdapter
+  constructor: (name) ->
+    @name = name || 'Backbone.dualStorage.Lawnchair'
+
+  initialize: ->
+    promise = $.Deferred()
+    @store = new Lawnchair
+      name: @name
+      adapter: ['indexed-db'], -> promise.resolve()
+    return promise
+
+  set: (key, value) ->
+    promise = $.Deferred()
+    @store.save {key: key, value: value}, (data) -> promise.resolve data.value
+    return promise
+
+  get: (key) ->
+    promise = $.Deferred()
+    @store.get key, (data) -> promise.resolve data?.value
+    return promise
+
+  remove: (key) ->
+    promise = $.Deferred()
+    @store.remove key, -> promise.resolve()
+    return promise
+
+  clear: ->
+    promise = $.Deferred()
+    @store.nuke -> promise.resolve()
+    return promise
+
+
+class StickyStorageAdapter
+  constructor: (name) ->
+    @name = name || 'Backbone.dualStorage.Sticky'
+
+  initialize: ->
+    promise = $.Deferred()
+    @store = new StickyStore
+      name: @name
+      adapters: ['indexedDB']
+      ready: -> promise.resolve()
+    return promise
+
+  set: (key, value) ->
+    promise = $.Deferred()
+    @store.set {key: key, value: value}, (data) -> promise.resolve data.value
+    return promise
+
+  get: (key) ->
+    promise = $.Deferred()
+    @store.get key, (data) -> promise.resolve data?.value
+    return promise
+
+  remove: (key) ->
+    promise = $.Deferred()
+    @store.remove key, -> promise.resolve()
+    return promise
+
+  clear: ->
+    promise = $.Deferred()
+    @store.removeAll -> promise.resolve()
+    return promise
+
+
+Backbone.storageAdapters =
+  LocalStorageAdapter: LocalStorageAdapter
+  LawnchairStorageAdapter: LawnchairStorageAdapter
+  # IndexedDB store is not working with Sticky.
+  # StickyStorageAdapter: StickyStorageAdapter