/// <summary>
/// Creates two navigation properties representing an association between two entity types.
/// </summary>
/// <param name="propertyInfo">Information to create the navigation property.</param>
/// <param name="partnerInfo">Information to create the partner navigation property.</param>
/// <returns>Created navigation property.</returns>
public static EdmNavigationProperty CreateNavigationPropertyWithPartner(EdmNavigationPropertyInfo propertyInfo, EdmNavigationPropertyInfo partnerInfo)
{
EdmUtil.CheckArgumentNull(propertyInfo, "propertyInfo");
EdmUtil.CheckArgumentNull(propertyInfo.Name, "propertyInfo.Name");
EdmUtil.CheckArgumentNull(propertyInfo.Target, "propertyInfo.Target");
EdmUtil.CheckArgumentNull(partnerInfo, "partnerInfo");
EdmUtil.CheckArgumentNull(partnerInfo.Name, "partnerInfo.Name");
EdmUtil.CheckArgumentNull(partnerInfo.Target, "partnerInfo.Target");
EdmNavigationProperty end1 = new EdmNavigationProperty(
partnerInfo.Target,
propertyInfo.Name,
CreateNavigationPropertyType(propertyInfo.Target, propertyInfo.TargetMultiplicity, "propertyInfo.TargetMultiplicity"),
propertyInfo.DependentProperties,
propertyInfo.PrincipalProperties,
propertyInfo.ContainsTarget,
propertyInfo.OnDelete);
EdmNavigationProperty end2 = new EdmNavigationProperty(
propertyInfo.Target,
partnerInfo.Name,
CreateNavigationPropertyType(partnerInfo.Target, partnerInfo.TargetMultiplicity, "partnerInfo.TargetMultiplicity"),
partnerInfo.DependentProperties,
partnerInfo.PrincipalProperties,
partnerInfo.ContainsTarget,
partnerInfo.OnDelete);
end1.SetPartner(end2, new EdmPathExpression(end2.Name));
end2.SetPartner(end1, new EdmPathExpression(end1.Name));
return(end1);
}
/// <summary>
/// Creates and adds a unidirectional navigation property to this type.
/// </summary>
/// <param name="propertyInfo">Information to create the navigation property.</param>
/// <returns>Created navigation property.</returns>
public EdmNavigationProperty AddUnidirectionalNavigation(EdmNavigationPropertyInfo propertyInfo)
{
EdmUtil.CheckArgumentNull(propertyInfo, "propertyInfo");
EdmNavigationProperty property = EdmNavigationProperty.CreateNavigationProperty(this, propertyInfo);
this.AddProperty(property);
return(property);
}
/// <summary>
/// Creates and adds a navigation property to this type and adds its navigation partner to the navigation target type.
/// </summary>
/// <param name="propertyInfo">Information to create the navigation property.</param>
/// <param name="partnerInfo">Information to create the partner navigation property.</param>
/// <returns>Created navigation property.</returns>
public EdmNavigationProperty AddBidirectionalNavigation(EdmNavigationPropertyInfo propertyInfo, EdmNavigationPropertyInfo partnerInfo)
{
EdmUtil.CheckArgumentNull(propertyInfo, "propertyInfo");
EdmUtil.CheckArgumentNull(propertyInfo.Target, "propertyInfo.Target");
EdmEntityType targetType = propertyInfo.Target as EdmEntityType;
if (targetType == null)
{
throw new ArgumentException("propertyInfo.Target", Strings.Constructable_TargetMustBeStock(typeof(EdmEntityType).FullName));
}
EdmNavigationProperty property = EdmNavigationProperty.CreateNavigationPropertyWithPartner(propertyInfo, this.FixUpDefaultPartnerInfo(propertyInfo, partnerInfo));
this.AddProperty(property);
targetType.AddProperty(property.Partner);
return(property);
}
/// <summary>
/// The purpose of this method is to make sure that some of the <paramref name="partnerInfo"/> fields are set to valid partner defaults.
/// For example if <paramref name="partnerInfo"/>.Target is null, it will be set to this entity type. If <paramref name="partnerInfo"/>.TargetMultiplicity
/// is unknown, it will be set to 0..1, etc.
/// Whenever this method applies new values to <paramref name="partnerInfo"/>, it will return a copy of it (thus won't modify the original).
/// If <paramref name="partnerInfo"/> is null, a new info object will be produced.
/// </summary>
/// <param name="propertyInfo">Primary navigation property info.</param>
/// <param name="partnerInfo">Partner navigation property info. May be null.</param>
/// <returns>Partner info.</returns>
private EdmNavigationPropertyInfo FixUpDefaultPartnerInfo(EdmNavigationPropertyInfo propertyInfo, EdmNavigationPropertyInfo partnerInfo)
{
EdmNavigationPropertyInfo partnerInfoOverride = null;
if (partnerInfo == null)
{
partnerInfo = partnerInfoOverride = new EdmNavigationPropertyInfo();
}
if (partnerInfo.Name == null)
{
if (partnerInfoOverride == null)
{
partnerInfoOverride = partnerInfo.Clone();
}
partnerInfoOverride.Name = (propertyInfo.Name ?? String.Empty) + "Partner";
}
if (partnerInfo.Target == null)
{
if (partnerInfoOverride == null)
{
partnerInfoOverride = partnerInfo.Clone();
}
partnerInfoOverride.Target = this;
}
if (partnerInfo.TargetMultiplicity == EdmMultiplicity.Unknown)
{
if (partnerInfoOverride == null)
{
partnerInfoOverride = partnerInfo.Clone();
}
partnerInfoOverride.TargetMultiplicity = EdmMultiplicity.ZeroOrOne;
}
return(partnerInfoOverride ?? partnerInfo);
}
/// <summary>
/// Creates a navigation property from the given information.
/// </summary>
/// <param name="declaringType">The type that declares this property.</param>
/// <param name="propertyInfo">Information to create the navigation property.</param>
/// <returns>Created navigation property.</returns>
public static EdmNavigationProperty CreateNavigationProperty(IEdmStructuredType declaringType, EdmNavigationPropertyInfo propertyInfo)
{
EdmUtil.CheckArgumentNull(propertyInfo, "propertyInfo");
EdmUtil.CheckArgumentNull(propertyInfo.Name, "propertyInfo.Name");
EdmUtil.CheckArgumentNull(propertyInfo.Target, "propertyInfo.Target");
return(new EdmNavigationProperty(
declaringType,
propertyInfo.Name,
CreateNavigationPropertyType(propertyInfo.Target, propertyInfo.TargetMultiplicity, "propertyInfo.TargetMultiplicity"),
propertyInfo.DependentProperties,
propertyInfo.PrincipalProperties,
propertyInfo.ContainsTarget,
propertyInfo.OnDelete));
}
