/// <summary>
/// Creates a delegate that will set the value of this property.
/// </summary>
/// <returns> The delegate. </returns>
protected override Action <object, object> CreateSetter()
{
var parentGetter = _parentPropertyEntry.Getter;
if (parentGetter == null)
{
return(null);
}
Action <object, object> setter;
if (!DbHelpers.GetPropertySetters(EntryMetadata.DeclaringType).TryGetValue(Name, out setter))
{
return(null);
}
return((o, v) =>
{
var parent = parentGetter(o);
if (parent == null)
{
throw Error.DbPropertyValues_CannotSetPropertyOnNullCurrentValue(
Name, ParentPropertyEntry.Name);
}
setter(parentGetter(o), v);
});
}
/// <summary>
/// Creates an object of the underlying type for this dictionary and hydrates it with property
/// values from this dictionary.
/// </summary>
/// <returns> The properties of this dictionary copied into a new object. </returns>
public object ToObject()
{
// Create an instance of the object either using the CreateObject method for an entity or
// a compiled delegate call to the constructor for other types.
var clone = CreateObject();
var setters = DbHelpers.GetPropertySetters(_type);
foreach (var propertyName in PropertyNames)
{
var value = GetItem(propertyName).Value;
var asValues = value as InternalPropertyValues;
if (asValues != null)
{
value = asValues.ToObject();
}
// If the CLR type doesn't have a property with the given name, then we simply ignore it.
// This cannot happen currently but will be possible when we have shadow state.
Action <object, object> setterDelegate;
if (setters.TryGetValue(propertyName, out setterDelegate))
{
setterDelegate(clone, value);
}
}
return(clone);
}
/// <summary>
/// Creates a delegate that will set the value of this property.
/// </summary>
/// <returns> The delegate. </returns>
protected override Action <object, object> CreateSetter()
{
Action <object, object> setter;
DbHelpers.GetPropertySetters(InternalEntityEntry.EntityType).TryGetValue(Name, out setter);
return(setter); // May be null
}
protected override Action <object, object> CreateSetter()
{
Action <object, object> action;
DbHelpers.GetPropertySetters(this.InternalEntityEntry.EntityType).TryGetValue(this.Name, out action);
return(action);
}
public static PropertyEntryMetadata ValidateNameAndGetMetadata(
InternalContext internalContext,
Type declaringType,
Type requestedType,
string propertyName)
{
Type type;
DbHelpers.GetPropertyTypes(declaringType).TryGetValue(propertyName, out type);
MetadataWorkspace metadataWorkspace = internalContext.ObjectContext.MetadataWorkspace;
StructuralType structuralType = metadataWorkspace.GetItem <StructuralType>(declaringType.FullNameWithNesting(), DataSpace.OSpace);
bool isMapped = false;
bool isComplex = false;
EdmMember edmMember;
structuralType.Members.TryGetValue(propertyName, false, out edmMember);
if (edmMember != null)
{
EdmProperty edmProperty = edmMember as EdmProperty;
if (edmProperty == null)
{
return((PropertyEntryMetadata)null);
}
if (type == (Type)null)
{
PrimitiveType edmType = edmProperty.TypeUsage.EdmType as PrimitiveType;
type = edmType == null ? ((ObjectItemCollection)metadataWorkspace.GetItemCollection(DataSpace.OSpace)).GetClrType((StructuralType)edmProperty.TypeUsage.EdmType) : edmType.ClrEquivalentType;
}
isMapped = true;
isComplex = edmProperty.TypeUsage.EdmType.BuiltInTypeKind == BuiltInTypeKind.ComplexType;
}
else
{
IDictionary <string, Func <object, object> > propertyGetters = DbHelpers.GetPropertyGetters(declaringType);
IDictionary <string, Action <object, object> > propertySetters = DbHelpers.GetPropertySetters(declaringType);
if (!propertyGetters.ContainsKey(propertyName) && !propertySetters.ContainsKey(propertyName))
{
return((PropertyEntryMetadata)null);
}
}
if (!requestedType.IsAssignableFrom(type))
{
throw Error.DbEntityEntry_WrongGenericForProp((object)propertyName, (object)declaringType.Name, (object)requestedType.Name, (object)type.Name);
}
return(new PropertyEntryMetadata(declaringType, type, propertyName, isMapped, isComplex));
}
public object ToObject()
{
object obj1 = this.CreateObject();
IDictionary <string, Action <object, object> > propertySetters = DbHelpers.GetPropertySetters(this._type);
foreach (string propertyName in (IEnumerable <string>) this.PropertyNames)
{
object obj2 = this.GetItem(propertyName).Value;
InternalPropertyValues internalPropertyValues = obj2 as InternalPropertyValues;
if (internalPropertyValues != null)
{
obj2 = internalPropertyValues.ToObject();
}
Action <object, object> action;
if (propertySetters.TryGetValue(propertyName, out action))
{
action(obj1, obj2);
}
}
return(obj1);
}
protected override Action <object, object> CreateSetter()
{
Func <object, object> parentGetter = this._parentPropertyEntry.Getter;
if (parentGetter == null)
{
return((Action <object, object>)null);
}
Action <object, object> setter;
if (!DbHelpers.GetPropertySetters(this.EntryMetadata.DeclaringType).TryGetValue(this.Name, out setter))
{
return((Action <object, object>)null);
}
return((Action <object, object>)((o, v) =>
{
if (parentGetter(o) == null)
{
throw Error.DbPropertyValues_CannotSetPropertyOnNullCurrentValue((object)this.Name, (object)this.ParentPropertyEntry.Name);
}
setter(parentGetter(o), v);
}));
}
// <summary>
// Validates that the given name is a property of the declaring type (either on the CLR type or in the EDM)
// and that it is a complex or scalar property rather than a nav property and then returns metadata about
// the property.
// </summary>
// <param name="internalContext"> The internal context. </param>
// <param name="declaringType"> The type that the property is declared on. </param>
// <param name="requestedType"> The type of property requested, which may be 'object' if any type can be accepted. </param>
// <param name="propertyName"> Name of the property. </param>
// <returns> Metadata about the property, or null if the property does not exist or is a navigation property. </returns>
public static PropertyEntryMetadata ValidateNameAndGetMetadata(
InternalContext internalContext, Type declaringType, Type requestedType, string propertyName)
{
DebugCheck.NotNull(internalContext);
DebugCheck.NotNull(declaringType);
DebugCheck.NotNull(requestedType);
DebugCheck.NotEmpty(propertyName);
Type propertyType;
DbHelpers.GetPropertyTypes(declaringType).TryGetValue(propertyName, out propertyType);
var metadataWorkspace = internalContext.ObjectContext.MetadataWorkspace;
var edmType = metadataWorkspace.GetItem <StructuralType>(declaringType.FullNameWithNesting(), DataSpace.OSpace);
var isMapped = false;
var isComplex = false;
EdmMember member;
edmType.Members.TryGetValue(propertyName, false, out member);
if (member != null)
{
// If the property is in the model, then it must be a scalar or complex property, not a nav prop
var edmProperty = member as EdmProperty;
if (edmProperty == null)
{
return(null);
}
if (propertyType == null)
{
var asPrimitive = edmProperty.TypeUsage.EdmType as PrimitiveType;
if (asPrimitive != null)
{
propertyType = asPrimitive.ClrEquivalentType;
}
else
{
Debug.Assert(
edmProperty.TypeUsage.EdmType is StructuralType, "Expected a structural type if property type is not primitive.");
var objectItemCollection =
(ObjectItemCollection)metadataWorkspace.GetItemCollection(DataSpace.OSpace);
propertyType = objectItemCollection.GetClrType((StructuralType)edmProperty.TypeUsage.EdmType);
}
}
isMapped = true;
isComplex = edmProperty.TypeUsage.EdmType.BuiltInTypeKind == BuiltInTypeKind.ComplexType;
}
else
{
// If the prop is not in the model, then it must have a getter or a setter
var propertyGetters = DbHelpers.GetPropertyGetters(declaringType);
var propertySetters = DbHelpers.GetPropertySetters(declaringType);
if (!(propertyGetters.ContainsKey(propertyName) || propertySetters.ContainsKey(propertyName)))
{
return(null);
}
Debug.Assert(propertyType != null, "If the property has a getter or setter, then it must exist and have a type.");
}
if (!requestedType.IsAssignableFrom(propertyType))
{
throw Error.DbEntityEntry_WrongGenericForProp(
propertyName, declaringType.Name, requestedType.Name, propertyType.Name);
}
return(new PropertyEntryMetadata(declaringType, propertyType, propertyName, isMapped, isComplex));
}
