Class Delta<TEntityType>

Namespace

System.Web.Http.OData

Assembly

System.Web.Http.OData.dll

A class the tracks changes (i.e. the delta) for a particular TEntityType.

public class Delta<TEntityType> : TypedDelta, IDynamicMetaObjectProvider, IDelta where TEntityType : class

Type Parameters

TEntityType

TEntityType is the base type of entity this delta tracks changes for.

Inheritance

object

DynamicObject

Delta

TypedDelta

Delta<TEntityType>

Implements

IDynamicMetaObjectProvider

IDelta

Inherited Members

Delta.TrySetMember(SetMemberBinder, object)

Delta.TryGetMember(GetMemberBinder, out object)

DynamicObject.TryDeleteMember(DeleteMemberBinder)

DynamicObject.TryInvokeMember(InvokeMemberBinder, object[], out object)

DynamicObject.TryConvert(ConvertBinder, out object)

DynamicObject.TryCreateInstance(CreateInstanceBinder, object[], out object)

DynamicObject.TryInvoke(InvokeBinder, object[], out object)

DynamicObject.TryBinaryOperation(BinaryOperationBinder, object, out object)

DynamicObject.TryUnaryOperation(UnaryOperationBinder, out object)

DynamicObject.TryGetIndex(GetIndexBinder, object[], out object)

DynamicObject.TrySetIndex(SetIndexBinder, object[], object)

DynamicObject.TryDeleteIndex(DeleteIndexBinder, object[])

DynamicObject.GetMetaObject(Expression)

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

Delta()

Initializes a new instance of Delta<TEntityType>.

public Delta()

Delta(Type)

Initializes a new instance of Delta<TEntityType>.

public Delta(Type entityType)

Parameters

entityType Type

The derived entity type for which the changes would be tracked. entityType should be assignable to instances of TEntityType.

Delta(Type, IEnumerable<string>)

Initializes a new instance of Delta<TEntityType>.

public Delta(Type entityType, IEnumerable<string> updatableProperties)

Parameters

entityType Type

The derived entity type for which the changes would be tracked. entityType should be assignable to instances of TEntityType.

updatableProperties IEnumerable<string>

The set of properties that can be updated or reset.

Properties

EntityType

Gets the actual type of the entity for which the changes are tracked.

public override Type EntityType { get; }

Property Value

Type

The actual type of the entity for which the changes are tracked.

ExpectedClrType

public override Type ExpectedClrType { get; }

Property Value

Type

Returns Type.

Methods

Clear()

Clears the Delta and resets the underlying Entity.

public override void Clear()

CopyChangedValues(TEntityType)

Copies the changed property values from the underlying entity (accessible via GetEntity() to the original entity.

public void CopyChangedValues(TEntityType original)

Parameters

original TEntityType

The entity to be updated.

CopyUnchangedValues(TEntityType)

Copies the unchanged property values from the underlying entity (accessible via GetEntity() ) to the original entity.

public void CopyUnchangedValues(TEntityType original)

Parameters

original TEntityType

The entity to be updated.

GetChangedPropertyNames()

Returns the Properties that have been modified through this Delta as an enumeration of property names.

public override IEnumerable<string> GetChangedPropertyNames()

Returns

IEnumerable<string>

The property names.

GetDynamicMemberNames()

public override IEnumerable<string> GetDynamicMemberNames()

Returns

IEnumerable<string>

Returns IEnumerable<T>.

GetEntity()

Returns the EntityType instance that holds all the changes (and original values) being tracked by this Delta.

public TEntityType GetEntity()

Returns

TEntityType

The EntityType istance.

GetUnchangedPropertyNames()

Returns the properties that have not been modified through this Delta as an enumeration of property names.

public override IEnumerable<string> GetUnchangedPropertyNames()

Returns

IEnumerable<string>

The properties that have not been modified through this Delta as an enumeration of property names.

Patch(TEntityType)

Overwrites the original entity with the changes tracked by this Delta.

public void Patch(TEntityType original)

Parameters

original TEntityType

The entity to be updated.

Put(TEntityType)

Overwrites the original entity with the values stored in this Delta.

public void Put(TEntityType original)

Parameters

original TEntityType

The entity to be updated.

TryGetPropertyType(string, out Type)

Attempts to get the Type of the property called name from the underlying entity.

public override bool TryGetPropertyType(string name, out Type type)

Parameters

name string

The name of the property.

type Type

The type of the property.

Returns

bool

true if the property was found; otherwise, false.

TryGetPropertyValue(string, out object)

Attempts to get the value of the property called name from the underlying entity.

public override bool TryGetPropertyValue(string name, out object value)

Parameters

name string

The name of the property.

value object

The value of the property.

Returns

bool

true if the property was found.

TrySetPropertyValue(string, object)

Attempts to set the property called name to the value specified.

public override bool TrySetPropertyValue(string name, object value)

Parameters

name string

The name of the property.

value object

The new value of the property.

Returns

bool

true if successful; otherwise, false.