/// <summary>
/// Copy constructor to create a navigation link with content scope from an existing navigation link scope.
/// </summary>
/// <param name="other">The navigation link scope to copy.</param>
internal NavigationLinkScope(NavigationLinkScope other)
: base(WriterState.NavigationLinkWithContent, other.Item, other.SkipWriting)
{
DebugUtils.CheckNoExternalCallers();
this.navigationPropertyType = other.navigationPropertyType;
}
private void PushScope(WriterState state, ODataItem item, bool skipWriting)
{
Debug.Assert(
state == WriterState.Error ||
state == WriterState.Entry && (item == null || item is ODataEntry) ||
state == WriterState.Feed && item is ODataFeed ||
state == WriterState.NavigationLink && item is ODataNavigationLink ||
state == WriterState.NavigationLinkWithContent && item is ODataNavigationLink ||
state == WriterState.Start && item == null ||
state == WriterState.Completed && item == null,
"Writer state and associated item do not match.");
Scope scope;
switch (state)
{
case WriterState.Entry:
scope = this.CreateEntryScope((ODataEntry)item, skipWriting);
break;
case WriterState.Feed:
scope = this.CreateFeedScope((ODataFeed)item, skipWriting);
break;
case WriterState.NavigationLink: // fall through
case WriterState.NavigationLinkWithContent:
scope = new NavigationLinkScope(state, (ODataNavigationLink)item, skipWriting);
break;
case WriterState.Start: // fall through
case WriterState.Completed: // fall through
case WriterState.Error:
scope = new Scope(state, item, skipWriting);
break;
default:
string errorMessage = Strings.General_InternalError(InternalErrorCodes.ODataWriterCore_Scope_Create_UnreachableCodePath);
Debug.Assert(false, errorMessage);
throw new ODataException(errorMessage);
}
this.scopes.Push(scope);
}
private void PushScope(WriterState state, ODataItem item, bool skipWriting)
{
Scope scope;
switch (state)
{
case WriterState.Start:
case WriterState.Completed:
scope = new Scope(state, item, skipWriting);
break;
case WriterState.Error:
scope = new Scope(state, item, skipWriting);
break;
case WriterState.Entry:
scope = this.CreateEntryScope((ODataEntry) item, skipWriting);
break;
case WriterState.Feed:
scope = this.CreateFeedScope((ODataFeed) item, skipWriting);
break;
case WriterState.NavigationLink:
case WriterState.NavigationLinkWithContent:
scope = new NavigationLinkScope(state, (ODataNavigationLink) item, skipWriting);
break;
default:
throw new ODataException(Microsoft.Data.OData.Strings.General_InternalError(InternalErrorCodes.ODataWriterCore_Scope_Create_UnreachableCodePath));
}
this.scopes.Push(scope);
}
private void PromoteNavigationLinkScope()
{
Debug.Assert(
this.State == WriterState.NavigationLink,
"Only a NavigationLink state can be promoted right now. If this changes please review the scope replacement code below.");
Debug.Assert(
this.CurrentScope.Item != null && this.CurrentScope.Item is ODataNavigationLink,
"Item must be a non-null navigation link.");
this.ValidateTransition(WriterState.NavigationLinkWithContent);
NavigationLinkScope previousScope = (NavigationLinkScope)this.scopes.Pop();
NavigationLinkScope newScope = new NavigationLinkScope(previousScope);
this.scopes.Push(newScope);
}
private void PromoteNavigationLinkScope()
{
this.ValidateTransition(WriterState.NavigationLinkWithContent);
NavigationLinkScope other = (NavigationLinkScope) this.scopes.Pop();
NavigationLinkScope item = new NavigationLinkScope(other);
this.scopes.Push(item);
}
