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The RichFaces Core Implementation.

There is a newer version: 4.3.7.Final

// RichFaces.utils
// RichFaces.utils.cache
(function ($, rf) {
	rf.utils = rf.utils || {};

	rf.utils.Cache = function (key, items, values, useCache) {
		this.key = key.toLowerCase();
		this.cache = {};
		this.cache[this.key] = items || [];
		this.originalValues = typeof values == "function" ? values(items) : values || this.cache[this.key];
		this.values = processValues(this.originalValues);
		this.useCache = useCache || checkValuesPrefix.call(this);
	};
	
	var processValues = function (values) {
		var processedValues = [];
		for (var i = 0; i 0) {
				this.cache[key] = newCache;
				if (newCache.length==1) {
					this.lastKey = key;
				}
			}
		}

		return newCache;
	};
	
	var getItemValue = function (item) {
		return this.originalValues[this.cache[this.key].index(item)];
	};
	
	var isCached = function (key) {
		key = key.toLowerCase();
		return this.cache[key] || this.useCache && key.indexOf(this.key)==0;
	};

	$.extend(rf.utils.Cache.prototype, (function () {
		return  {
			getItems: getItems,
			getItemValue: getItemValue,
			isCached: isCached
		};
	})());

})(jQuery, RichFaces);