Imported Debian patch 4.8.10-2

debian/missing-sources/dojo/store/util/SimpleQueryEngine.js

@@ -0,0 +1,110 @@
+define(["../../_base/array" /*=====, "../api/Store" =====*/], function(arrayUtil /*=====, Store =====*/){
+
+// module:
+//		dojo/store/util/SimpleQueryEngine
+
+return function(query, options){
+	// summary:
+	//		Simple query engine that matches using filter functions, named filter
+	//		functions or objects by name-value on a query object hash
+	//
+	// description:
+	//		The SimpleQueryEngine provides a way of getting a QueryResults through
+	//		the use of a simple object hash as a filter.  The hash will be used to
+	//		match properties on data objects with the corresponding value given. In
+	//		other words, only exact matches will be returned.
+	//
+	//		This function can be used as a template for more complex query engines;
+	//		for example, an engine can be created that accepts an object hash that
+	//		contains filtering functions, or a string that gets evaluated, etc.
+	//
+	//		When creating a new dojo.store, simply set the store's queryEngine
+	//		field as a reference to this function.
+	//
+	// query: Object
+	//		An object hash with fields that may match fields of items in the store.
+	//		Values in the hash will be compared by normal == operator, but regular expressions
+	//		or any object that provides a test() method are also supported and can be
+	//		used to match strings by more complex expressions
+	//		(and then the regex's or object's test() method will be used to match values).
+	//
+	// options: dojo/store/api/Store.QueryOptions?
+	//		An object that contains optional information such as sort, start, and count.
+	//
+	// returns: Function
+	//		A function that caches the passed query under the field "matches".  See any
+	//		of the "query" methods on dojo.stores.
+	//
+	// example:
+	//		Define a store with a reference to this engine, and set up a query method.
+	//
+	//	|	var myStore = function(options){
+	//	|		//	...more properties here
+	//	|		this.queryEngine = SimpleQueryEngine;
+	//	|		//	define our query method
+	//	|		this.query = function(query, options){
+	//	|			return QueryResults(this.queryEngine(query, options)(this.data));
+	//	|		};
+	//	|	};
+
+	// create our matching query function
+	switch(typeof query){
+		default:
+			throw new Error("Can not query with a " + typeof query);
+		case "object": case "undefined":
+			var queryObject = query;
+			query = function(object){
+				for(var key in queryObject){
+					var required = queryObject[key];
+					if(required && required.test){
+						// an object can provide a test method, which makes it work with regex
+						if(!required.test(object[key], object)){
+							return false;
+						}
+					}else if(required != object[key]){
+						return false;
+					}
+				}
+				return true;
+			};
+			break;
+		case "string":
+			// named query
+			if(!this[query]){
+				throw new Error("No filter function " + query + " was found in store");
+			}
+			query = this[query];
+			// fall through
+		case "function":
+			// fall through
+	}
+	function execute(array){
+		// execute the whole query, first we filter
+		var results = arrayUtil.filter(array, query);
+		// next we sort
+		var sortSet = options && options.sort;
+		if(sortSet){
+			results.sort(typeof sortSet == "function" ? sortSet : function(a, b){
+				for(var sort, i=0; sort = sortSet[i]; i++){
+					var aValue = a[sort.attribute];
+					var bValue = b[sort.attribute];
+					if (aValue != bValue){
+						return !!sort.descending == (aValue == null || aValue > bValue) ? -1 : 1;
+					}
+				}
+				return 0;
+			});
+		}
+		// now we paginate
+		if(options && (options.start || options.count)){
+			var total = results.length;
+			results = results.slice(options.start || 0, (options.start || 0) + (options.count || Infinity));
+			results.total = total;
+		}
+		return results;
+	}
+	execute.matches = query;
+	return execute;
+};
+
+});