OnOperation.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 / EntityModel / SchemaObjectModel / OnOperation.cs / 1305376 / OnOperation.cs
                        

                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 
using System;
using System.Diagnostics; 
using System.Xml;
using System.Data;
using System.Data.Objects.DataClasses;
using System.Data.Metadata.Edm; 

 
namespace System.Data.EntityModel.SchemaObjectModel 
{
    ///  
    /// Represents an OnDelete, OnCopy, OnSecure, OnLock or OnSerialize element
    /// 
    internal sealed class OnOperation : SchemaElement
    { 
        private Operation _Operation;
        private Action _Action; 
        ///  
        ///
        ///  
        /// 
        /// 
        public OnOperation(RelationshipEnd parentElement, Operation operation)
        : base(parentElement) 
        {
            Operation = operation; 
        } 

        ///  
        /// The operation
        /// 
        public Operation Operation
        { 
            get
            { 
                return _Operation; 
            }
            private set 
            {
                _Operation = value;
            }
        } 

        ///  
        /// The action 
        /// 
        public Action Action 
        {
            get
            {
                return _Action; 
            }
            private set 
            { 
                _Action = value;
            } 
        }

        protected override bool ProhibitAttribute(string namespaceUri, string localName)
        { 
            if (base.ProhibitAttribute(namespaceUri, localName))
            { 
                return true; 
            }
 
            if (namespaceUri == null && localName == XmlConstants.Name)
            {
                return false;
            } 
            return false;
 
        } 

        protected override bool HandleAttribute(XmlReader reader) 
        {
            if (base.HandleAttribute(reader))
            {
                return true; 
            }
            else if (CanHandleAttribute(reader, XmlConstants.Action)) 
            { 
                HandleActionAttribute(reader);
                return true; 
            }

            return false;
        } 

        ///  
        /// Handle the Action attribute 
        /// 
        /// reader positioned at Action attribute 
        private void HandleActionAttribute(XmlReader reader)
        {
            Debug.Assert(reader != null);
 
            RelationshipKind relationshipKind = ParentElement.ParentElement.RelationshipKind;
 
            switch ( reader.Value.Trim() ) 
            {
                case "None": 
                    Action = Action.None;
                    break;
                case "Cascade":
                    Action = Action.Cascade; 
                    break;
                default: 
                    AddError( ErrorCode.InvalidAction, EdmSchemaErrorSeverity.Error, reader, System.Data.Entity.Strings.InvalidAction(reader.Value, ParentElement.FQName ) ); 
                    break;
            } 
        }

        /// 
        /// the parent element. 
            /// 
        private new RelationshipEnd ParentElement 
        { 
            get
            { 
                return (RelationshipEnd)base.ParentElement;
            }
        }
    } 
}

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

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