/// <summary>
/// Clone the specified ApplicationContext and create a new DependentApplicationContext />.
/// </summary>
/// <param name="context">The DependentApplicationContext to be cloned.</param>
/// <returns>The DependentApplicationContext</returns>
/// .
public static DependentApplicationContext DepedentClone(this ApplicationContext context)
{
Guard.ArgumentNotNull(context, "context");
var currentContext = context.ContextLocator.GetCurrentContext();
var contextItemCollection = new ContextItemCollection();
foreach (var current in currentContext)
{
var obj = current.Value;
var cloneable = obj as ICloneable;
if (cloneable != null)
{
obj = cloneable.Clone();
}
var contextItem = new ContextItem(current.Key, obj, current.IsLocal);
if (current.ReadOnly)
{
contextItem.ReadOnly = true;
}
contextItemCollection.Add(contextItem);
}
return new DependentApplicationContext(contextItemCollection);
}
private void EnsureCanWrite(ContextItem contextItem)
{
Guard.ArgumentNotNull(contextItem, "contextItem");
var contextItem2 = GetContextItem(contextItem.Key);
if (contextItem2 != null && contextItem2.ReadOnly)
{
throw new InvalidOperationException(
ResourceUtility.Format(Resources.ExceptionCannotChangeReadonlyContextItem));
}
}
/// <summary> /// Set context item inernally. /// </summary> /// <param name="contextItem">The context item.</param> protected abstract void SetContextItemCore(ContextItem contextItem);
/// <summary>
/// Add a new context item or use the new context item to override the exiting one.
/// </summary>
/// <param name="contextItem">The new <see cref="T:Cedar.Core.ApplicationContexts.ContextItem" /> to set.</param>
public void SetContextItem(ContextItem contextItem)
{
EnsureCanWrite(contextItem);
SetContextItemCore(contextItem);
}
/// <summary>
/// Add a new context item or use the new context item to override the exiting one.
/// </summary>
/// <param name="contextItem">The new <see cref="T:Cedar.Core.ApplicationContexts.ContextItem" /> to set.</param>
protected override void SetContextItemCore(ContextItem contextItem)
{
Guard.ArgumentNotNull(contextItem, "contextItem");
if (SessionStateAvailabe)
{
HttpContext.Current.Session[contextItem.Key] = contextItem;
if (!ContextItemKeys.Contains(contextItem.Key))
{
ContextItemKeys.Add(contextItem.Key);
}
}
else
{
CallContextLocator.SetContextItem(contextItem);
}
}
/// <summary>
/// Add a new context item or use the new context item to override the exiting one.
/// </summary>
/// <param name="contextItem">The new <see cref="T:Cedar.Core.ApplicationContexts.ContextItem" /> to set.</param>
protected override void SetContextItemCore(ContextItem contextItem)
{
Guard.ArgumentNotNull(contextItem, "contextItem");
CallContext.FreeNamedDataSlot(contextItem.Key);
CallContext.SetData(contextItem.Key, contextItem);
if (!Keys.Contains(contextItem.Key))
{
Keys.Add(contextItem.Key);
}
}