keyvaluestore.js

这是一个ajax的例子大家好好的看看就是一个鱼眼的效果

if(!dojo._hasResource["dojox.data.tests.stores.KeyValueStore"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.data.tests.stores.KeyValueStore"] = true;
dojo.provide("dojox.data.tests.stores.KeyValueStore");
dojo.require("dojox.data.KeyValueStore");
dojo.require("dojo.data.api.Read");
dojo.require("dojo.data.api.Identity");

dojox.data.tests.stores.KeyValueStore.getDatasource = function(type){
	//  summary:
	//		A simple helper function for getting the sample data used in each of the tests.
	//  description:
	//		A simple helper function for getting the sample data used in each of the tests.

	var dataSource = {};
	var filepath = "stores/properties.js";
	if(dojo.isBrowser){
		dataSource.url = dojo.moduleUrl("dojox.data.tests", filepath).toString();            
	}else{
		// When running tests in Rhino, xhrGet is not available,
		// so we have the file data in the code below.
		var keyData = "/*[";
		// Properties of December 1, 2007 
		keyData += '{ "year": "2007" },';
		keyData += '{ "nmonth": "12" },';
		keyData += '{ "month": "December" },';
		keyData += '{ "nday": "1" },';
		keyData += '{ "day": "Saturday" },';
		keyData += '{ "dayOfYear": "335" },';
		keyData += '{ "weekOfYear": "48" }';
		keyData += ']*/';
		dataSource.data = keyData;
	}
	return dataSource; //Object
}

dojox.data.tests.stores.KeyValueStore.verifyItems = function(keyStore, items, attribute, compareArray){
	//  summary:
	//		A helper function for validating that the items array is ordered
	//		the same as the compareArray
	if(items.length != compareArray.length){ return false; }
	for(var i = 0; i < items.length; i++){
		if(!(keyStore.getValue(items[i], attribute) === compareArray[i])){
			return false; //Boolean
		}
	}
	return true; //Boolean
}

dojox.data.tests.stores.KeyValueStore.error = function(t, d, errData){
	//  summary:
	//		The error callback function to be used for all of the tests.
	for (i in errData) {
		console.log(errData[i]);
	}
	d.errback(errData);	
}

doh.register("dojox.data.tests.stores.KeyValueStore", 
	[
		function testReadAPI_fetch_all(t){
			//	summary: 
			//		Simple test of a basic fetch on KeyValueStore.
			//	description:
			//		Simple test of a basic fetch on KeyValueStore.
			
			var args = dojox.data.tests.stores.KeyValueStore.getDatasource("stores/properties.js");
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();
			function completedAll(items){
				t.assertTrue((items.length === 7));
				d.callback(true);
			}

			//Get everything...
			keyStore.fetch({ onComplete: completedAll, onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)});
			return d; //Object
		},
		function testReadAPI_fetch_all_withEmptyStringField(t){
			//	summary: 
			//		Simple test of a basic fetch on KeyValueStore.
			//	description:
			//		Simple test of a basic fetch on KeyValueStore.
			
			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();
			function completedAll(items){
				t.assertTrue((items.length === 7));
				d.callback(true);
			}

			//Get everything...
			keyStore.fetch({ onComplete: completedAll, onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)});
			return d; //Object
		},
		function testReadAPI_fetch_one(t){
			//	summary: 
			//		Simple test of a basic fetch on KeyValueStore of a single item.
			//	description:
			//		Simple test of a basic fetch on KeyValueStore of a single item.

			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();
			function onComplete(items, request){
				t.is(1, items.length);
				d.callback(true);
			}
			keyStore.fetch({ 	query: {key: "year"}, 
								onComplete: onComplete, 
								onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)
							});
			return d; //Object
		},
		function testReadAPI_fetch_Multiple(t){
			//	summary: 
			//		Simple test of a basic fetch on KeyValueStore of a single item.
			//	description:
			//		Simple test of a basic fetch on KeyValueStore of a single item.

			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();

			var done = [false, false];

			function onCompleteOne(items, request){
				done[0] = true;
				t.is(1, items.length);
				if(done[0] && done[1]){
					d.callback(true);
				}
			}
			
			function onCompleteTwo(items, request){
				done[1] = true;
				t.is(1, items.length);
				if(done[0] && done[1]){
					d.callback(true);
				}
			}
			
			try
			{
				keyStore.fetch({ 	query: {key: "year"}, 
									onComplete: onCompleteOne, 
									onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)
								});
				keyStore.fetch({ 	query: {key: "month"}, 
									onComplete: onCompleteTwo, 
									onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)
								});
			}
			catch(e)
			{
				for (i in e) {
					console.log(e[i]);
				}
			}

			return d; //Object
		},
		function testReadAPI_fetch_MultipleMixed(t){
			//	summary: 
			//		Simple test of a basic fetch on KeyValueStore of a single item.
			//	description:
			//		Simple test of a basic fetch on KeyValueStore of a single item.

			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();

			var done = [false, false];
			function onComplete(items, request){
				done[0] = true;
				t.is(1, items.length);
				if(done[0] && done[1]){
					d.callback(true);
				}
			}
			
			function onItem(item){
				done[1] = true;
				t.assertTrue(item !== null);
				t.is('year', keyStore.getValue(item,"key"));
				t.is(2007, keyStore.getValue(item,"value"));
				t.is(2007, keyStore.getValue(item,"year"));
				if(done[0] && done[1]){
					d.callback(true);
				}
			}

			keyStore.fetch({ 	query: {key: "day"}, 
								onComplete: onComplete, 
								onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)
							});
			
			keyStore.fetchItemByIdentity({identity: "year", onItem: onItem, onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)});
			return d; //Object
		},
		function testReadAPI_fetch_all_streaming(t){
			//	summary: 
			//		Simple test of a basic fetch on KeyValueStore.
			//	description:
			//		Simple test of a basic fetch on KeyValueStore.

			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);

			var d = new doh.Deferred();
			count = 0;

			function onBegin(size, requestObj){
				t.assertTrue(size === 7);
			}
			function onItem(item, requestObj){
				t.assertTrue(keyStore.isItem(item));
				count++;
			}
			function onComplete(items, request){
				t.is(7, count);
				t.is(null, items);
			    d.callback(true);
			}

			//Get everything...
			keyStore.fetch({	onBegin: onBegin,
								onItem: onItem, 
								onComplete: onComplete,
								onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)
							});
			return d; //Object
		},
		function testReadAPI_fetch_paging(t){
			 //	summary: 
			 //		Test of multiple fetches on a single result.  Paging, if you will.
			 //	description:
			 //		Test of multiple fetches on a single result.  Paging, if you will.

			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();
			function dumpFirstFetch(items, request){
				t.is(5, items.length);
				request.start = 3;
				request.count = 1;
				request.onComplete = dumpSecondFetch;
				keyStore.fetch(request);
			}

			function dumpSecondFetch(items, request){
				t.is(1, items.length);
				request.start = 0;
				request.count = 5;
				request.onComplete = dumpThirdFetch;
				keyStore.fetch(request);
			}

			function dumpThirdFetch(items, request){
				t.is(5, items.length);
				request.start = 2;
				request.count = 20;
				request.onComplete = dumpFourthFetch;
				keyStore.fetch(request);
			}

			function dumpFourthFetch(items, request){
				t.is(5, items.length);
				request.start = 9;
				request.count = 100;
				request.onComplete = dumpFifthFetch;
				keyStore.fetch(request);
			}

			function dumpFifthFetch(items, request){
				t.is(0, items.length);
				request.start = 2;
				request.count = 20;
				request.onComplete = dumpSixthFetch;
				keyStore.fetch(request);
			}

			function dumpSixthFetch(items, request){
				t.is(5, items.length);
			    d.callback(true);
			}

			function completed(items, request){
				t.is(7, items.length);
				request.start = 1;
				request.count = 5;
				request.onComplete = dumpFirstFetch;
				keyStore.fetch(request);
			}

			keyStore.fetch({onComplete: completed, onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)});
			return d; //Object
		},
		
		function testReadAPI_getLabel(t){
			//	summary: 
			//		Simple test of the getLabel function against a store set that has a label defined.
			//	description:
			//		Simple test of the getLabel function against a store set that has a label defined.

			var args = dojox.data.tests.stores.KeyValueStore.getDatasource();
			var keyStore = new dojox.data.KeyValueStore(args);
			
			var d = new doh.Deferred();
			function onComplete(items, request){
				t.assertEqual(items.length, 1);
				var label = keyStore.getLabel(items[0]);
				t.assertTrue(label !== null);
				t.assertEqual("year", label);
				d.callback(true);
			}
			keyStore.fetch({ 	query: {key: "year"}, 
								onComplete: onComplete, 
								onError: dojo.partial(dojox.data.tests.stores.KeyValueStore.error, t, d)
							});
			return d;
		},
		function testReadAPI_getLabelAttributes(t){
			//	summary: 
			//		Simple test of the getLabelAttributes function against a store set that has a label defined.
			//	description:
			//		Simple test of the getLabelAttributes function against a store set that has a label defined.

			 var args = dojox.data.tests.stores.KeyValueStore.getDatasource();