private IEdmNavigationProperty ComputePartner()
{
string partnerPropertyName = this.navigationProperty.Partner;
IEdmEntityType targetEntityType = this.TargetEntityType;
if (partnerPropertyName != null)
{
var partner = targetEntityType.FindProperty(partnerPropertyName) as IEdmNavigationProperty;
if (partner == null)
{
partner = new UnresolvedNavigationPropertyPath(targetEntityType, partnerPropertyName, this.Location);
}
return(partner);
}
foreach (IEdmNavigationProperty potentialPartner in targetEntityType.NavigationProperties())
{
if (potentialPartner == this)
{
continue;
}
if (potentialPartner.Partner == this)
{
return(potentialPartner);
}
}
return(null);
}
private IEdmNavigationProperty ResolveNavigationPropertyPathForBinding(CsdlNavigationPropertyBinding binding)
{
Debug.Assert(binding != null, "binding != null");
string bindingPath = binding.Path;
Debug.Assert(bindingPath != null, "bindingPath != null");
IEdmEntityType definingType = this.typeCache.GetValue(this, ComputeElementTypeFunc, null);
const char Slash = '/';
if (bindingPath.Length == 0 || bindingPath[bindingPath.Length - 1] == Slash)
{
// if the path did not actually contain a navigation property, then treat it as an unresolved path.
// TODO: improve the error given in this case?
return(new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location));
}
IEdmNavigationProperty navigationProperty;
string[] pathSegements = bindingPath.Split(Slash);
for (int index = 0; index < pathSegements.Length - 1; index++)
{
string pathSegement = pathSegements[index];
if (pathSegement.Length == 0)
{
// TODO: improve the error given in this case?
return(new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location));
}
IEdmEntityType derivedType = this.container.Context.FindType(pathSegement) as IEdmEntityType;
if (derivedType == null)
{
IEdmProperty property = definingType.FindProperty(pathSegement);
navigationProperty = property as IEdmNavigationProperty;
if (navigationProperty == null)
{
return(new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location));
}
definingType = navigationProperty.ToEntityType();
}
else
{
definingType = derivedType;
}
}
navigationProperty = definingType.FindProperty(pathSegements.Last()) as IEdmNavigationProperty;
if (navigationProperty == null)
{
// TODO: improve the error given in this case?
navigationProperty = new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location);
}
return(navigationProperty);
}
private IEdmNavigationProperty ComputePartner()
{
string partnerPropertyName = this.navigationProperty.Partner;
IEdmEntityType targetEntityType = this.TargetEntityType;
if (partnerPropertyName != null)
{
var partner = targetEntityType.FindProperty(partnerPropertyName) as IEdmNavigationProperty;
if (partner == null)
{
partner = new UnresolvedNavigationPropertyPath(targetEntityType, partnerPropertyName, this.Location);
}
return partner;
}
foreach (IEdmNavigationProperty potentialPartner in targetEntityType.NavigationProperties())
{
if (potentialPartner == this)
{
continue;
}
if (potentialPartner.Partner == this)
{
return potentialPartner;
}
}
return null;
}
private IEdmNavigationProperty ResolveNavigationPropertyPathForBinding(CsdlNavigationPropertyBinding binding)
{
Debug.Assert(binding != null, "binding != null");
string bindingPath = binding.Path;
Debug.Assert(bindingPath != null, "bindingPath != null");
IEdmEntityType definingType = this.typeCache.GetValue(this, ComputeElementTypeFunc, null);
const char Slash = '/';
if (bindingPath.Length == 0 || bindingPath[bindingPath.Length - 1] == Slash)
{
// if the path did not actually contain a navigation property, then treat it as an unresolved path.
// TODO: improve the error given in this case?
return new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location);
}
IEdmNavigationProperty navigationProperty;
string[] pathSegements = bindingPath.Split(Slash);
for (int index = 0; index < pathSegements.Length - 1; index++)
{
string pathSegement = pathSegements[index];
if (pathSegement.Length == 0)
{
// TODO: improve the error given in this case?
return new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location);
}
IEdmEntityType derivedType = this.container.Context.FindType(pathSegement) as IEdmEntityType;
if (derivedType == null)
{
IEdmProperty property = definingType.FindProperty(pathSegement);
navigationProperty = property as IEdmNavigationProperty;
if (navigationProperty == null)
{
return new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location);
}
definingType = navigationProperty.ToEntityType();
}
else
{
definingType = derivedType;
}
}
navigationProperty = definingType.FindProperty(pathSegements.Last()) as IEdmNavigationProperty;
if (navigationProperty == null)
{
// TODO: improve the error given in this case?
navigationProperty = new UnresolvedNavigationPropertyPath(definingType, bindingPath, binding.Location);
}
return navigationProperty;
}
