public override void Load()
{
_hiddenFiledPagePersister.Load();
string viewStateStr = _hiddenFiledPagePersister.ViewState as string; // Page.Request.Form[STATE_KEY];
trace.WriteTrace(TraceSeverity.InformationEvent, TraceCategory.Content, "View state: " + viewStateStr);
if (viewStateStr != null && viewStateStr.StartsWith(CacheKeyPrefix)) // state not inline check the cached state key
{
string state = LoadState(viewStateStr);
if (state == null)
{
trace.WriteTrace(TraceSeverity.CriticalEvent, TraceCategory.Content, "View state lost. Probably cached item expired.");
}
else
{
try
{
Pair data = (Pair)StateFormatter.Deserialize(state);
ViewState = data.First;
ControlState = data.Second;
}
catch
{
trace.WriteTrace(TraceSeverity.Exception, TraceCategory.Content, String.Format("Could not deserialize view state. View state is invalid."));
}
}
}
else
{
ViewState = _hiddenFiledPagePersister.ViewState;
ControlState = _hiddenFiledPagePersister.ControlState;
}
}
public DictionaryObjectTreeItem(ObjectTreeItem parent, string propertyName, DictionaryData source, int depth) : base(parent, propertyName, source)
{
var builder = new List <ObjectTreeItem>(source.Dictionary.Count);
foreach (var item in source.Dictionary)
{
builder.Add(StateFormatter.ToTreeHierarchy(this, item.Value, depth + 1, Convert.ToString(item.Key)));
}
Children = builder.ToArray();
}
public StateObjectTreeItem(ObjectTreeItem parent, string propertyName, StateObjectData source, int depth) :
base(parent, propertyName, source)
{
var properties = new List <ObjectTreeItem>(source.Properties.Count);
foreach (var item in source.Properties)
{
properties.Add(StateFormatter.ToTreeHierarchy(this, item.Value, depth + 1, item.Key));
}
Children = properties.ToArray();
}
public ListObjectTreeItem(ObjectTreeItem parent, string propertyName, ListData source, int depth) :
base(parent, propertyName, source)
{
var builder = new List <ObjectTreeItem>(source.List.Length);
foreach (var item in source.List)
{
builder.Add(StateFormatter.ToTreeHierarchy(this, item, depth + 1, null));
}
Children = builder.ToArray();
}
/// <summary>
/// 保存ViewState。如果ViewState的尺寸小于配置信息中的值（缺省为10K），保存到隐藏域中，否则保存到数据库中
/// </summary>
public override void Save()
{
if (ViewState != null || ControlState != null)
{
string hiddenFieldData = string.Empty;
string serializedState = StateFormatter.Serialize(ViewState);
if (serializedState.Length >= ViewStatePersistSettings.GetConfig().Threshold)
{
ViewState = SaveStateToDB(serializedState);
}
}
}
/// <summary>
/// Десериализация ViewState
/// </summary>
/// <param name="serializedViewState"></param>
protected void Deserialize(string serializedViewState)
{
object vsPair = StateFormatter.Deserialize(serializedViewState);
if (vsPair != null && (vsPair is Pair))
{
var myPair = vsPair as Pair;
ViewState = myPair.First;
ControlState = myPair.Second;
}
else
{
ViewState = vsPair;
}
}
/// <summary>
/// 加载ViewState。如果ViewState的尺寸小于配置信息中的值（缺省为10K），从隐藏域中加载，否则从数据库中加载
/// </summary>
public override void Load()
{
string data = this.Page.Request.Form["__VIEWSTATE"];
if (string.IsNullOrEmpty(data) == false)
{
#region 注释掉原有的逻辑
//Pair statePair = (Pair)StateFormatter.Deserialize(data);
//ControlState = statePair.Second;
//ViewState = statePair.First;
#endregion
long id;
if (long.TryParse(ViewState.ToString(), out id))
{
string stateStr = LoadStateFromDB(id);
ViewState = StateFormatter.Deserialize(stateStr);
}
}
}
public override void Save()
{
if (cache.Loaded)
{
string cacheKey = CacheKeyPrefix + Guid.NewGuid().ToString("N"); // dynamic guid
Pair data = new Pair(ViewState, ControlState);
string state = StateFormatter.Serialize(data);
bool cached = false;
try
{
cached = cache.Insert(cacheKey, state); //insert without grouping
}
catch (Exception e)
{
if (!cached)
{
trace.WriteTrace(TraceSeverity.WarningEvent, TraceCategory.Content, "Could not cache view state." + e.Message);
}
}
if (cached)
{
_hiddenFiledPagePersister.ViewState = cacheKey; // send dynamic guid to client
ContentPerfCounters.Current.UpdateViewstateSize(state.Length);
ContentPerfCounters.Current.IncrementViewstateAdditions();
trace.WriteTrace(TraceSeverity.InformationEvent, TraceCategory.Content, "view state cached: " + cacheKey);
}
}
else
{
trace.WriteTrace(TraceSeverity.CriticalEvent, TraceCategory.Content, " Cache is not loaded. ");
_hiddenFiledPagePersister.ViewState = ViewState;
_hiddenFiledPagePersister.ControlState = ControlState;
}
_hiddenFiledPagePersister.Save();
}
protected override Object LoadPageStateFromPersistenceMedium()
{
Object state = null;
String clientViewStateString = _requestValueCollection[ViewStateID];
if (clientViewStateString != null)
{
_privateViewState =
StateFormatter.Deserialize(clientViewStateString) as Hashtable;
if (_privateViewState != null)
{
String[] arr = _privateViewState[PageClientViewStateKey] as String[];
if (arr != null)
{
_activeFormID = arr[0];
String id = arr[1];
if (id != null)
{
_sessionViewState.Load(this, id);
state = _sessionViewState.ViewState;
if (state == null)
{
OnViewStateExpire(EventArgs.Empty);
}
else
{
Object[] arrState = state as Object[];
if (arrState != null)
{
_privateViewState = (Hashtable)arrState[1];
state = arrState[0];
}
}
}
}
_privateViewState.Remove(PageClientViewStateKey);
// If the page had no view state, but had controls requiring postback,
// this information was saved in client view state.
Object controlsRequiringPostBack =
_privateViewState[_controlsRequiringPostBackKey];
if (controlsRequiringPostBack != null)
{
state = new Triplet(GetTypeHashCode().ToString(),
null,
controlsRequiringPostBack);
_privateViewState.Remove(_controlsRequiringPostBackKey);
}
// Apply whatever private view state can be applied now.
foreach (DictionaryEntry entry in _privateViewState)
{
if (entry.Value != null)
{
MobileControl ctl = FindControl((String)entry.Key) as MobileControl;
if (ctl != null)
{
ctl.LoadPrivateViewStateInternal(entry.Value);
}
}
}
}
}
_privateViewStateLoaded = true;
if (state == null)
{
// Give framework back an empty page view state
state = new Triplet(GetTypeHashCode().ToString(), null, null);
}
return(state);
}
public static ObjectTreeItem ToTreeItem(object state)
{
var currentData = PropertiesCollector.Collect(state);
return(StateFormatter.ToTreeHierarchy(currentData));
}
/// <summary>
/// Сериализация ViewState
/// </summary>
/// <returns></returns>
protected string Serialize()
{
var vsPair = new Pair(ViewState, ControlState);
return(StateFormatter.Serialize(vsPair));
}
public async Task <RootState> ReduceAsync(RootState state, ReduxAction action, CancellationToken ct)
{
RootState result;
switch (action)
{
case InsertNewAction insertNew:
int key = state.Steps.Length;
var actionDataTask = Task.Run(() => PropertiesCollector.Collect(insertNew.Action), ct);
var stateDataTask = Task.Run(() => PropertiesCollector.Collect(insertNew.State), ct);
await actionDataTask.ConfigureAwait(false);
var actionTreeItem = await Task.Run(() => {
string actionName = StateFormatter.GetActionName(insertNew.Action);
return(StateFormatter.ToTreeHierarchy(actionDataTask.Result, actionName));
}).ConfigureAwait(false);
await stateDataTask.ConfigureAwait(false);
result = state.Clone(steps: state.Steps.Spread(
new Step(key, insertNew.Action, insertNew.State, actionData: actionDataTask.Result,
actionTreeItem: actionTreeItem,
stateData: stateDataTask.Result, stateTreeItem: null, differenceItem: null, differenceCalculated: false)));
break;
case GenerateTreeHierarchyAction generateTreeHierarchy:
{
Step selectedStep = state.SelectedStep;
result = state;
if (selectedStep != null)
{
if (selectedStep.StateTreeItem is null)
{
var hierarchy = StateFormatter.ToTreeHierarchy(selectedStep.StateData);
Step updated = selectedStep.Clone(stateTreeItem: hierarchy);
result = result.Clone(steps: state.Steps.Replace(selectedStep, updated), selectedStep: updated);
selectedStep = updated;
}
if (!selectedStep.DifferenceCalculated)
{
// first check if previous step has StateTree
var selectedStepIndex = Array.IndexOf(result.Steps, selectedStep);
var previousStep = selectedStepIndex > 0 ? result.Steps[selectedStepIndex - 1] : null;
ObjectTreeItem previousHierarchy = null;
if (previousStep != null)
{
if (previousStep.StateTreeItem == null)
{
previousHierarchy = StateFormatter.ToTreeHierarchy(previousStep.StateData);
Step previousUpdated = previousStep.Clone(stateTreeItem: previousHierarchy);
result = result.Clone(steps: result.Steps.Replace(previousStep, previousUpdated));
}
else
{
previousHierarchy = previousStep.StateTreeItem;
}
}
var difference = TreeComparer.CreateDifferenceTree(previousHierarchy, selectedStep.StateTreeItem);
Step updated = selectedStep.Clone(differenceItem: difference, differenceCalculated: true);
result = result.Clone(steps: result.Steps.Replace(selectedStep, updated), selectedStep: updated);
}
}
}
break;
case SelectedStepChangedAction selectedStepChanged:
{
var selectedStep = selectedStepChanged.Key.HasValue ? state.Steps.Single(s => s.Key == selectedStepChanged.Key) : null;
result = state.Clone(selectedStep: selectedStep);
}
break;
default:
result = state;
break;
}
return(result);
}
