internal void InitializeAccessors(
NavigationPropertyAccessor fromAccessor,
NavigationPropertyAccessor toAccessor)
{
this._fromAccessor = fromAccessor;
this._toAccessor = toAccessor;
}
private static Func <RelationshipManager, RelatedEnd, RelatedEnd> CreateGetRelatedEndMethod <TSource, TTarget>(
AssociationEndMember sourceMember, AssociationEndMember targetMember, NavigationPropertyAccessor sourceAccessor,
NavigationPropertyAccessor targetAccessor)
where TSource : class
where TTarget : class
{
Func <RelationshipManager, RelatedEnd, RelatedEnd> getRelatedEnd;
// Get the appropriate method, either collection or reference depending on the target multiplicity
switch (targetMember.RelationshipMultiplicity)
{
case RelationshipMultiplicity.ZeroOrOne:
case RelationshipMultiplicity.One:
{
getRelatedEnd = (manager, relatedEnd) =>
manager.GetRelatedReference <TSource, TTarget>(
sourceMember.DeclaringType.FullName,
sourceMember.Name,
targetMember.Name,
sourceAccessor,
targetAccessor,
sourceMember.RelationshipMultiplicity,
relatedEnd);
break;
}
case RelationshipMultiplicity.Many:
{
getRelatedEnd = (manager, relatedEnd) =>
manager.GetRelatedCollection <TSource, TTarget>(
sourceMember.DeclaringType.FullName,
sourceMember.Name,
targetMember.Name,
sourceAccessor,
targetAccessor,
sourceMember.RelationshipMultiplicity,
relatedEnd);
break;
}
default:
var type = typeof(RelationshipMultiplicity);
throw new ArgumentOutOfRangeException(
type.Name,
Strings.ADP_InvalidEnumerationValue(
type.Name, ((int)targetMember.RelationshipMultiplicity).ToString(CultureInfo.InvariantCulture)));
}
return(getRelatedEnd);
}
// ------------
// Constructors
// ------------
/// <summary>
/// Creates a navigation object with the given relationship
/// name, role name for the source and role name for the
/// destination.
/// </summary>
/// <param name="relationshipName">Canonical-space name of the relationship.</param>
/// <param name="from">Name of the role which is the source of the navigation.</param>
/// <param name="to">Name of the role which is the destination of the navigation.</param>
/// <param name="fromAccessor">The navigation property which is the source of the navigation.</param>
/// <param name="toAccessor">The navigation property which is the destination of the navigation.</param>
internal RelationshipNavigation(string relationshipName, string from, string to, NavigationPropertyAccessor fromAccessor, NavigationPropertyAccessor toAccessor)
{
EntityUtil.CheckStringArgument(relationshipName, "relationshipName");
EntityUtil.CheckStringArgument(from, "from");
EntityUtil.CheckStringArgument(to, "to");
_relationshipName = relationshipName;
_from = from;
_to = to;
_fromAccessor = fromAccessor;
_toAccessor = toAccessor;
}
internal RelationshipNavigation(
AssociationType associationType,
string from,
string to,
NavigationPropertyAccessor fromAccessor,
NavigationPropertyAccessor toAccessor)
{
this._associationType = associationType;
this._relationshipName = associationType.FullName;
this._from = from;
this._to = to;
this._fromAccessor = fromAccessor;
this._toAccessor = toAccessor;
}
// ------------
// Constructors
// ------------
// <summary>
// Creates a navigation object with the given relationship
// name, role name for the source and role name for the
// destination.
// </summary>
// <param name="relationshipName"> Canonical-space name of the relationship. </param>
// <param name="from"> Name of the role which is the source of the navigation. </param>
// <param name="to"> Name of the role which is the destination of the navigation. </param>
// <param name="fromAccessor"> The navigation property which is the source of the navigation. </param>
// <param name="toAccessor"> The navigation property which is the destination of the navigation. </param>
internal RelationshipNavigation(
string relationshipName, string from, string to, NavigationPropertyAccessor fromAccessor, NavigationPropertyAccessor toAccessor)
{
Check.NotEmpty(relationshipName, "relationshipName");
Check.NotEmpty(@from, "from");
Check.NotEmpty(to, "to");
_relationshipName = relationshipName;
_from = from;
_to = to;
_fromAccessor = fromAccessor;
_toAccessor = toAccessor;
}
internal RelationshipNavigation(
string relationshipName,
string from,
string to,
NavigationPropertyAccessor fromAccessor,
NavigationPropertyAccessor toAccessor)
{
Check.NotEmpty(relationshipName, nameof(relationshipName));
Check.NotEmpty(from, nameof(from));
Check.NotEmpty(to, nameof(to));
this._relationshipName = relationshipName;
this._from = from;
this._to = to;
this._fromAccessor = fromAccessor;
this._toAccessor = toAccessor;
}
// <summary>
// Creates a navigation object with the given relationship
// name, role name for the source and role name for the
// destination.
// </summary>
// <param name="associationType"> The association type representing the relationship. </param>
// <param name="from"> Name of the role which is the source of the navigation. </param>
// <param name="to"> Name of the role which is the destination of the navigation. </param>
// <param name="fromAccessor"> The navigation property which is the source of the navigation. </param>
// <param name="toAccessor"> The navigation property which is the destination of the navigation. </param>
internal RelationshipNavigation(AssociationType associationType, string from, string to,
NavigationPropertyAccessor fromAccessor, NavigationPropertyAccessor toAccessor)
{
DebugCheck.NotNull(associationType);
DebugCheck.NotEmpty(@from);
DebugCheck.NotEmpty(to);
_associationType = associationType;
_relationshipName = associationType.FullName;
_from = from;
_to = to;
_fromAccessor = fromAccessor;
_toAccessor = toAccessor;
}
private static Func <RelationshipManager, RelatedEnd, RelatedEnd> CreateGetRelatedEndMethod(
AssociationEndMember sourceMember,
AssociationEndMember targetMember)
{
EntityType entityTypeForEnd1 = MetadataHelper.GetEntityTypeForEnd(sourceMember);
EntityType entityTypeForEnd2 = MetadataHelper.GetEntityTypeForEnd(targetMember);
NavigationPropertyAccessor propertyAccessor1 = MetadataHelper.GetNavigationPropertyAccessor(entityTypeForEnd2, targetMember, sourceMember);
NavigationPropertyAccessor propertyAccessor2 = MetadataHelper.GetNavigationPropertyAccessor(entityTypeForEnd1, sourceMember, targetMember);
return((Func <RelationshipManager, RelatedEnd, RelatedEnd>) typeof(DelegateFactory).GetDeclaredMethod(nameof(CreateGetRelatedEndMethod), typeof(AssociationEndMember), typeof(AssociationEndMember), typeof(NavigationPropertyAccessor), typeof(NavigationPropertyAccessor)).MakeGenericMethod(entityTypeForEnd1.ClrType, entityTypeForEnd2.ClrType).Invoke((object)null, new object[4]
{
(object)sourceMember,
(object)targetMember,
(object)propertyAccessor1,
(object)propertyAccessor2
}));
}
private static Func <RelationshipManager, RelatedEnd, RelatedEnd> CreateGetRelatedEndMethod(AssociationEndMember sourceMember, AssociationEndMember targetMember)
{
Debug.Assert(sourceMember.DeclaringType == targetMember.DeclaringType, "Source and Target members must be in the same DeclaringType");
EntityType sourceEntityType = MetadataHelper.GetEntityTypeForEnd(sourceMember);
EntityType targetEntityType = MetadataHelper.GetEntityTypeForEnd(targetMember);
NavigationPropertyAccessor sourceAccessor = MetadataHelper.GetNavigationPropertyAccessor(targetEntityType, targetMember, sourceMember);
NavigationPropertyAccessor targetAccessor = MetadataHelper.GetNavigationPropertyAccessor(sourceEntityType, sourceMember, targetMember);
MethodInfo genericCreateRelatedEndMethod = typeof(LightweightCodeGenerator).GetMethod("CreateGetRelatedEndMethod", BindingFlags.NonPublic | BindingFlags.Static, null, new Type[] { typeof(AssociationEndMember), typeof(AssociationEndMember), typeof(NavigationPropertyAccessor), typeof(NavigationPropertyAccessor) }, null);
Debug.Assert(genericCreateRelatedEndMethod != null, "Could not find method LightweightCodeGenerator.CreateGetRelatedEndMethod");
MethodInfo createRelatedEndMethod = genericCreateRelatedEndMethod.MakeGenericMethod(sourceEntityType.ClrType, targetEntityType.ClrType);
object getRelatedEndDelegate = createRelatedEndMethod.Invoke(null, new object[] { sourceMember, targetMember, sourceAccessor, targetAccessor });
return((Func <RelationshipManager, RelatedEnd, RelatedEnd>)getRelatedEndDelegate);
}
private static Func <RelationshipManager, RelatedEnd, RelatedEnd> CreateGetRelatedEndMethod <TSource, TTarget>(
AssociationEndMember sourceMember,
AssociationEndMember targetMember,
NavigationPropertyAccessor sourceAccessor,
NavigationPropertyAccessor targetAccessor)
where TSource : class
where TTarget : class
{
switch (targetMember.RelationshipMultiplicity)
{
case RelationshipMultiplicity.ZeroOrOne:
case RelationshipMultiplicity.One:
return((Func <RelationshipManager, RelatedEnd, RelatedEnd>)((manager, relatedEnd) => (RelatedEnd)manager.GetRelatedReference <TSource, TTarget>(sourceMember, targetMember, sourceAccessor, targetAccessor, relatedEnd)));
case RelationshipMultiplicity.Many:
return((Func <RelationshipManager, RelatedEnd, RelatedEnd>)((manager, relatedEnd) => (RelatedEnd)manager.GetRelatedCollection <TSource, TTarget>(sourceMember, targetMember, sourceAccessor, targetAccessor, relatedEnd)));
default:
Type type = typeof(RelationshipMultiplicity);
throw new ArgumentOutOfRangeException(type.Name, Strings.ADP_InvalidEnumerationValue((object)type.Name, (object)((int)targetMember.RelationshipMultiplicity).ToString((IFormatProvider)CultureInfo.InvariantCulture)));
}
}
