/usr/share/javascript/yui3/datasource-cache/datasource-cache.js is in libjs-yui3-full 3.5.1-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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YUI 3.5.1 (build 22)
Copyright 2012 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/
YUI.add('datasource-cache', function(Y) {
/**
* Plugs DataSource with caching functionality.
*
* @module datasource
* @submodule datasource-cache
*/
/**
* DataSourceCache extension binds Cache to DataSource.
* @class DataSourceCacheExtension
*/
var DataSourceCacheExtension = function() {
};
Y.mix(DataSourceCacheExtension, {
/**
* The namespace for the plugin. This will be the property on the host which
* references the plugin instance.
*
* @property NS
* @type String
* @static
* @final
* @value "cache"
*/
NS: "cache",
/**
* Class name.
*
* @property NAME
* @type String
* @static
* @final
* @value "dataSourceCacheExtension"
*/
NAME: "dataSourceCacheExtension"
});
DataSourceCacheExtension.prototype = {
/**
* Internal init() handler.
*
* @method initializer
* @param config {Object} Config object.
* @private
*/
initializer: function(config) {
this.doBefore("_defRequestFn", this._beforeDefRequestFn);
this.doBefore("_defResponseFn", this._beforeDefResponseFn);
},
/**
* First look for cached response, then send request to live data.
*
* @method _beforeDefRequestFn
* @param e {Event.Facade} Event Facade with the following properties:
* <dl>
* <dt>tId (Number)</dt> <dd>Unique transaction ID.</dd>
* <dt>request (Object)</dt> <dd>The request.</dd>
* <dt>callback (Object)</dt> <dd>The callback object.</dd>
* <dt>cfg (Object)</dt> <dd>Configuration object.</dd>
* </dl>
* @protected
*/
_beforeDefRequestFn: function(e) {
// Is response already in the Cache?
var entry = (this.retrieve(e.request)) || null,
payload = e.details[0];
if (entry && entry.response) {
payload.cached = entry.cached;
payload.response = entry.response;
payload.data = entry.data;
this.get("host").fire("response", payload);
return new Y.Do.Halt("DataSourceCache extension halted _defRequestFn");
}
},
/**
* Adds data to cache before returning data.
*
* @method _beforeDefResponseFn
* @param e {Event.Facade} Event Facade with the following properties:
* <dl>
* <dt>tId (Number)</dt> <dd>Unique transaction ID.</dd>
* <dt>request (Object)</dt> <dd>The request.</dd>
* <dt>callback (Object)</dt> <dd>The callback object with the following properties:
* <dl>
* <dt>success (Function)</dt> <dd>Success handler.</dd>
* <dt>failure (Function)</dt> <dd>Failure handler.</dd>
* </dl>
* </dd>
* <dt>data (Object)</dt> <dd>Raw data.</dd>
* <dt>response (Object)</dt> <dd>Normalized response object with the following properties:
* <dl>
* <dt>cached (Object)</dt> <dd>True when response is cached.</dd>
* <dt>results (Object)</dt> <dd>Parsed results.</dd>
* <dt>meta (Object)</dt> <dd>Parsed meta data.</dd>
* <dt>error (Object)</dt> <dd>Error object.</dd>
* </dl>
* </dd>
* <dt>cfg (Object)</dt> <dd>Configuration object.</dd>
* </dl>
* @protected
*/
_beforeDefResponseFn: function(e) {
// Add to Cache before returning
if(e.response && !e.cached) {
this.add(e.request, e.response);
}
}
};
Y.namespace("Plugin").DataSourceCacheExtension = DataSourceCacheExtension;
/**
* DataSource plugin adds cache functionality.
* @class DataSourceCache
* @extends Cache
* @uses Plugin.Base, DataSourceCachePlugin
*/
function DataSourceCache(config) {
var cache = config && config.cache ? config.cache : Y.Cache,
tmpclass = Y.Base.create("dataSourceCache", cache, [Y.Plugin.Base, Y.Plugin.DataSourceCacheExtension]),
tmpinstance = new tmpclass(config);
tmpclass.NS = "tmpClass";
return tmpinstance;
}
Y.mix(DataSourceCache, {
/**
* The namespace for the plugin. This will be the property on the host which
* references the plugin instance.
*
* @property NS
* @type String
* @static
* @final
* @value "cache"
*/
NS: "cache",
/**
* Class name.
*
* @property NAME
* @type String
* @static
* @final
* @value "dataSourceCache"
*/
NAME: "dataSourceCache"
});
Y.namespace("Plugin").DataSourceCache = DataSourceCache;
}, '3.5.1' ,{requires:['datasource-local', 'cache-base', 'plugin']});
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