/// <summary>
/// Finds the navigation source that a navigation property targets.
/// </summary>
/// <param name="navigationProperty">The navigation property.</param>
/// <param name="bindingPath">The binding path of the navigation property.</param>
/// <returns>The navigation source that the navigation property targets</returns>
public virtual IEdmNavigationSource FindNavigationTarget(IEdmNavigationProperty navigationProperty, IEdmPathExpression bindingPath)
{
EdmUtil.CheckArgumentNull(navigationProperty, "navigationProperty");
bindingPath = bindingPath ?? new EdmPathExpression(navigationProperty.Name);
Dictionary <string, IEdmNavigationPropertyBinding> result = EdmUtil.DictionarySafeGet(this.navigationPropertyMappings, navigationProperty);
if (result != null)
{
IEdmNavigationPropertyBinding binding = EdmUtil.DictionarySafeGet(result, bindingPath.Path);
{
if (binding != null)
{
return(binding.Target);
}
}
}
if (navigationProperty.ContainsTarget)
{
return(AddNavigationPropertyBinding(
navigationProperty,
new EdmContainedEntitySet(this, navigationProperty, bindingPath),
bindingPath)
.Target);
}
return(EdmUtil.DictionaryGetOrUpdate(
this.unknownNavigationPropertyCache,
navigationProperty,
navProperty => new EdmUnknownEntitySet(this, navProperty)));
}
/// <summary>
/// Finds the navigation source that a navigation property targets.
/// </summary>
/// <param name="navigationProperty">The navigation property.</param>
/// <param name="bindingPath">The binding path of the navigation property.</param>
/// <returns>The navigation source that the navigation property targets</returns>
public virtual IEdmNavigationSource FindNavigationTarget(IEdmNavigationProperty navigationProperty, IEdmPathExpression bindingPath)
{
EdmUtil.CheckArgumentNull(navigationProperty, "navigationProperty");
if (!navigationProperty.ContainsTarget && bindingPath != null)
{
Dictionary <string, IEdmNavigationPropertyBinding> result;
IEdmNavigationPropertyBinding binding;
if (this.navigationPropertyMappings.TryGetValue(navigationProperty, out result) && result.TryGetValue(bindingPath.Path, out binding))
{
return(binding.Target);
}
}
else if (navigationProperty.ContainsTarget)
{
return(EdmUtil.DictionaryGetOrUpdate(
this.containedNavigationPropertyCache,
navigationProperty,
navProperty => new EdmContainedEntitySet(this, navProperty)));
}
return(EdmUtil.DictionaryGetOrUpdate(
this.unknownNavigationPropertyCache,
navigationProperty,
navProperty => new EdmUnknownEntitySet(this, navProperty)));
}
private IEdmNavigationPropertyBinding AddNavigationPropertyBinding(IEdmNavigationProperty navigationProperty, IEdmNavigationSource target, IEdmPathExpression bindingPath)
{
Dictionary <string, IEdmNavigationPropertyBinding> mapping = EdmUtil.DictionaryGetOrUpdate(
this.navigationPropertyMappings,
navigationProperty,
navProperty => new Dictionary <string, IEdmNavigationPropertyBinding>());
IEdmNavigationPropertyBinding containedBinding = EdmUtil.DictionaryGetOrUpdate <string, IEdmNavigationPropertyBinding>(
mapping,
bindingPath.Path,
path => new EdmNavigationPropertyBinding(navigationProperty, target, new EdmPathExpression(path)));
return(containedBinding);
}
private static HashEntry GetHashEntry(IEdmEnumType enumType)
{
if (fieldInfoHash.Count > MaxHashElements)
{
lock (fieldInfoHash)
{
if (fieldInfoHash.Count > MaxHashElements)
{
fieldInfoHash.Clear();
}
}
}
return(EdmUtil.DictionaryGetOrUpdate(fieldInfoHash, enumType, type => new HashEntry(null, null)));
}
