ObjectStateEntryDbUpdatableDataRecord.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Objects / ObjectStateEntryDbUpdatableDataRecord.cs / 1305376 / ObjectStateEntryDbUpdatableDataRecord.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 
using System;
using System.ComponentModel; 
using System.Data;
using System.Data.Common;
using System.Data.Metadata.Edm;
using System.Data.Objects; 
using System.Diagnostics;
using System.Reflection; 
 
namespace System.Data.Objects
{ 
    internal sealed class ObjectStateEntryDbUpdatableDataRecord : CurrentValueRecord
    {
        internal ObjectStateEntryDbUpdatableDataRecord(EntityEntry cacheEntry, StateManagerTypeMetadata metadata, object userObject)
            : base(cacheEntry, metadata, userObject) 
        {
            EntityUtil.CheckArgumentNull(cacheEntry, "cacheEntry"); 
            EntityUtil.CheckArgumentNull(userObject, "userObject"); 
            EntityUtil.CheckArgumentNull(metadata, "metadata");
            Debug.Assert(!cacheEntry.IsKeyEntry, "Cannot create an ObjectStateEntryDbUpdatableDataRecord for a key entry"); 
            switch (cacheEntry.State)
            {
                case EntityState.Unchanged:
                case EntityState.Modified: 
                case EntityState.Added:
                    break; 
                default: 
                    Debug.Assert(false, "A CurrentValueRecord cannot be created for an entity object that is in a deleted or detached state.");
                    break; 
            }
        }
        internal ObjectStateEntryDbUpdatableDataRecord(RelationshipEntry cacheEntry)
            : base(cacheEntry) 
        {
            EntityUtil.CheckArgumentNull(cacheEntry, "cacheEntry"); 
            switch (cacheEntry.State) 
            {
                case EntityState.Unchanged: 
                case EntityState.Modified:
                case EntityState.Added:
                    break;
                default: 
                    Debug.Assert(false, "A CurrentValueRecord cannot be created for an entity object that is in a deleted or detached state.");
                    break; 
            } 
        }
        protected override object GetRecordValue(int ordinal) 
        {
            if (_cacheEntry.IsRelationship)
            {
                return (_cacheEntry as RelationshipEntry).GetCurrentRelationValue(ordinal); 
            }
            else 
            { 
                return (_cacheEntry as EntityEntry).GetCurrentEntityValue(_metadata, ordinal, _userObject, ObjectStateValueRecord.CurrentUpdatable);
            } 
        }
        protected override void SetRecordValue(int ordinal, object value)
        {
            if (_cacheEntry.IsRelationship) 
            {
                // Cannot modify relation values from the public API 
                throw EntityUtil.CantModifyRelationValues(); 
            }
            else 
            {
                (_cacheEntry as EntityEntry).SetCurrentEntityValue(_metadata, ordinal, _userObject, value);
            }
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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