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有一個模型,我希望能夠通過這樣做是爲了記錄一個連接的devicetypes:此錯誤JayData「未捕獲的RangeError:最大調用堆棧大小超出」
var connections = DataLayer.context.ConnectionSet.filter(function(item) {
return item.Id == id;
}, {id: 1});
connections.forEach(function(item) {
console.log(item.Sender.Device.DeviceType);
});
item.Sender.Device.DeviceType
結果: Uncaught RangeError: Maximum call stack size exceeded
這是我的模型:
$data.Entity.extend('SubliminalData.Connection', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'Sender': { 'type':'SubliminalData.DevicePort','required':true },
'Receiver': { 'type':'SubliminalData.DevicePort','required':true }
});
$data.Entity.extend('SubliminalData.Device', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'DeviceType': { 'type':'Edm.String','nullable':false,'required':true }
});
$data.Entity.extend('SubliminalData.Port', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true }
});
$data.Entity.extend('SubliminalData.DevicePort', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'Device': { 'type':'SubliminalData.Device','required':true },
'Port': { 'type':'SubliminalData.Port','required':true }
});
爲什麼這給了我一個最大的呼叫例外,我該如何解決?我找不到它。
--UPDATE--
我一直在努力得到它最近的工作,我已經改變了我的模型,使我有倒退的導航性能。現在它更有意義,但現在我有另一個問題。
新模式:
$data.Entity.extend('SubliminalData.Connection', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'Sender': { 'type':'SubliminalData.DevicePort','required':true,'inverseProperty':'SendingConnections' },
'Receiver': { 'type':'SubliminalData.DevicePort','required':true,'inverseProperty':'ReceivingConnections' }
});
$data.Entity.extend('SubliminalData.Device', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'DeviceType': { 'type':'Edm.String','nullable':false,'required':true },
'DevicePorts': { 'type':'Array','elementType':'SubliminalData.DevicePort','inverseProperty':'Device' }
});
$data.Entity.extend('SubliminalData.Port', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'PortType': { 'type':'Edm.String','nullable':false,'required':true },
'DevicePorts': { 'type':'Array','elementType':'SubliminalData.DevicePort','inverseProperty':'Port' }
});
$data.Entity.extend('SubliminalData.DevicePort', {
'Id': { 'key':true,'type':'Edm.Int32','nullable':false,'computed':true },
'Device': { 'type':'SubliminalData.Device','required':true,'inverseProperty':'DevicePorts' },
'Port': { 'type':'SubliminalData.Port','required':true,'inverseProperty':'DevicePorts' },
'SendingConnections': { 'type':'Array','elementType':'SubliminalData.Connection','inverseProperty':'Sender' },
'ReceivingConnections': { 'type':'Array','elementType':'SubliminalData.Connection','inverseProperty':'Receiver' }
});
$data.EntityContext.extend('DataLayer.SubliminalDataContainer', {
'ConnectionSet': { type: $data.EntitySet, elementType: SubliminalData.Connection },
'DeviceSet': { type: $data.EntitySet, elementType: SubliminalData.Device },
'PortSet': { type: $data.EntitySet, elementType: SubliminalData.Port },
'DevicePortSet': { type: $data.EntitySet, elementType: SubliminalData.DevicePort }
});
$data.generatedContexts = $data.generatedContexts || [];
$data.generatedContexts.push(DataLayer.SubliminalDataContainer);
/*Context Instance*/
DataLayer.context = new DataLayer.SubliminalDataContainer({ name:'oData', oDataServiceHost: 'http://localhost:57703/WcfDataService1.svc' });
我的新問題是這樣的:
var connections = DataLayer.context.ConnectionSet.filter(function(item) {
return item.Id == id;
}, {id: 1});
connections.forEach(function(item) {
l(item); //works great!
l(item.Sender); //undefined :[
});
爲什麼我的發件人未定義?我以爲我瞭解JayData,但我相信我不知道。
這將無法正常工作,因爲我使用本地主機。思想的? – HansElsen 2013-02-22 07:40:50
對不起,我們無法提供如此詳細的信息,請提供更多 – 2013-02-22 09:41:03
我的問題已改變,也許您可以提供幫助嗎?我已經更新了描述 – HansElsen 2013-02-22 09:56:39