131 lines
3.5 KiB
C#
131 lines
3.5 KiB
C#
//---------------------------------------------------------------------
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// <copyright file="OnOperation.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//
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// @owner [....]
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// @backupOwner [....]
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//---------------------------------------------------------------------
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namespace System.Data.EntityModel.SchemaObjectModel
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{
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using System.Data.Metadata.Edm;
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using System.Data.Objects.DataClasses;
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using System.Diagnostics;
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using System.Xml;
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/// <summary>
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/// Represents an OnDelete, OnCopy, OnSecure, OnLock or OnSerialize element
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/// </summary>
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internal sealed class OnOperation : SchemaElement
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{
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private Operation _Operation;
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private Action _Action;
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/// <summary>
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///
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/// </summary>
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/// <param name="parentElement"></param>
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/// <param name="operation"></param>
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public OnOperation(RelationshipEnd parentElement, Operation operation)
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: base(parentElement)
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{
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Operation = operation;
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}
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/// <summary>
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/// The operation
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/// </summary>
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public Operation Operation
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{
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get
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{
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return _Operation;
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}
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private set
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{
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_Operation = value;
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}
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}
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/// <summary>
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/// The action
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/// </summary>
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public Action Action
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{
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get
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{
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return _Action;
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}
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private set
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{
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_Action = value;
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}
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}
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protected override bool ProhibitAttribute(string namespaceUri, string localName)
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{
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if (base.ProhibitAttribute(namespaceUri, localName))
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{
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return true;
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}
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if (namespaceUri == null && localName == XmlConstants.Name)
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{
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return false;
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}
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return false;
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}
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protected override bool HandleAttribute(XmlReader reader)
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{
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if (base.HandleAttribute(reader))
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{
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return true;
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}
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else if (CanHandleAttribute(reader, XmlConstants.Action))
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{
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HandleActionAttribute(reader);
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return true;
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}
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return false;
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}
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/// <summary>
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/// Handle the Action attribute
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/// </summary>
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/// <param name="reader">reader positioned at Action attribute</param>
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private void HandleActionAttribute(XmlReader reader)
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{
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Debug.Assert(reader != null);
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RelationshipKind relationshipKind = ParentElement.ParentElement.RelationshipKind;
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switch ( reader.Value.Trim() )
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{
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case "None":
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Action = Action.None;
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break;
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case "Cascade":
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Action = Action.Cascade;
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break;
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default:
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AddError( ErrorCode.InvalidAction, EdmSchemaErrorSeverity.Error, reader, System.Data.Entity.Strings.InvalidAction(reader.Value, ParentElement.FQName ) );
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break;
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}
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}
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/// <summary>
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/// the parent element.
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/// </summary>
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private new RelationshipEnd ParentElement
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{
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get
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{
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return (RelationshipEnd)base.ParentElement;
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}
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}
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}
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}
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