public bool IsOrderable(OrderByClause orderByClause, OeModelBoundSettings entitySettings)
{
while (orderByClause != null)
{
var propertyNode = (SingleValuePropertyAccessNode)orderByClause.Expression;
if (!IsAllowed(propertyNode.Property, entitySettings, OeModelBoundKind.OrderBy))
{
return(false);
}
if (propertyNode.Source is SingleNavigationNode navigationNode)
{
do
{
if (!IsAllowed(navigationNode.NavigationProperty, null, OeModelBoundKind.OrderBy))
{
return(false);
}
}while ((navigationNode = navigationNode.Source as SingleNavigationNode) != null);
}
orderByClause = orderByClause.ThenBy;
}
return(true);
}
public FilterableVisitor(OeModelBoundProvider modelBoundProvider, OeModelBoundSettings settings)
{
_modelBoundProvider = modelBoundProvider;
_settings = new Stack <OeModelBoundSettings>();
IsFilterable = true;
_settings.Push(settings);
}
public bool IsFilterable(FilterClause filterClause, OeModelBoundSettings settings)
{
if (settings != null)
{
var filterableVisitor = new FilterableVisitor(this, settings);
filterClause.Expression.Accept(filterableVisitor);
return(filterableVisitor.IsFilterable);
}
return(true);
}
private bool PushPropertySettings(IEdmNavigationProperty navigationProperty)
{
OeModelBoundSettings navigationSettings = _modelBoundProvider.GetSettings(navigationProperty);
if (navigationSettings == null)
{
return(false);
}
_settings.Push(navigationSettings);
return(true);
}
private bool IsAllowed(IEdmProperty property, OeModelBoundSettings entitySettings, OeModelBoundKind modelBoundKind)
{
if (entitySettings == null)
{
entitySettings = GetSettings((IEdmEntityType)property.DeclaringType);
if (entitySettings == null)
{
return(true);
}
}
return(entitySettings.IsAllowed(this, property, modelBoundKind));
}
private bool IsSelectable(ODataPath path, OeModelBoundSettings entitySettings)
{
IEdmProperty property;
if (path.LastSegment is NavigationPropertySegment navigationPropertySegment)
{
property = navigationPropertySegment.NavigationProperty;
}
else if (path.LastSegment is PropertySegment propertySegment)
{
property = propertySegment.Property;
}
else
{
return(false);
}
return(IsAllowed(property, entitySettings, OeModelBoundKind.Select));
}
public bool IsOrderable(OrderByClause orderByClause, OeModelBoundSettings entitySettings)
{
while (orderByClause != null)
{
if (orderByClause.Expression is SingleValuePropertyAccessNode propertyNode)
{
if (!IsAllowed(propertyNode.Property, entitySettings, OeModelBoundKind.OrderBy))
{
return(false);
}
if (propertyNode.Source is SingleNavigationNode navigationNode)
{
for (; ;)
{
if (!IsAllowed(navigationNode.NavigationProperty, null, OeModelBoundKind.OrderBy))
{
return(false);
}
if (navigationNode.Source is SingleNavigationNode navigationNode2)
{
navigationNode = navigationNode2;
}
else
{
break;
}
}
}
}
orderByClause = orderByClause.ThenBy;
}
return(true);
}
public bool IsTop(long top, IEdmNavigationProperty navigationProperty)
{
OeModelBoundSettings settings = GetSettings(navigationProperty);
return(top <= (settings == null || settings.MaxTop == 0 ? Int32.MaxValue : settings.MaxTop));
}
public bool IsTop(long top, IEdmEntityType entityType)
{
OeModelBoundSettings settings = GetSettings(entityType);
return(top <= (settings == null || settings.MaxTop == 0 ? Int32.MaxValue : settings.MaxTop));
}
public bool IsNavigationNextLink(IEdmNavigationProperty navigationProperty)
{
OeModelBoundSettings settings = GetSettings(navigationProperty);
return(settings == null ? false : settings.NavigationNextLink);
}
public bool IsCountable(IEdmNavigationProperty navigationProperty)
{
OeModelBoundSettings settings = GetSettings(navigationProperty);
return(settings == null ? true : settings.Countable);
}
public bool IsCountable(IEdmEntityType entityType)
{
OeModelBoundSettings settings = GetSettings(entityType);
return(settings == null ? true : settings.Countable);
}
public int GetPageSize(IEdmNavigationProperty navigationProperty)
{
OeModelBoundSettings settings = GetSettings(navigationProperty);
return(settings == null ? 0 : settings.PageSize);
}
public int GetPageSize(IEdmEntityType entityType)
{
OeModelBoundSettings settings = GetSettings(entityType);
return(settings == null ? 0 : settings.PageSize);
}
