mcs/class/referencesource/System.Data.Entity/System/Data/EntityModel/SchemaObjectModel/EntityContainerEntitySetDefiningQuery.cs

   1 //---------------------------------------------------------------------
   2 // <copyright file="EntityContainerEntitySetDefiningQuery.cs" company="Microsoft">
   3 //      Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //
   6 // @owner       Microsoft
   7 // @backupOwner Microsoft
   8 //---------------------------------------------------------------------
   9
  10 namespace System.Data.EntityModel.SchemaObjectModel
  11 {
  12     using System;
  13     using System.Data.Metadata.Edm;
  14     using System.Xml;
  15
  16     /// <summary>
  17     /// Represents an DefiningQuery element.
  18     /// </summary>
  19     internal sealed class EntityContainerEntitySetDefiningQuery : SchemaElement
  20     {
  21         private string _query;
  22
  23         /// <summary>
  24         /// Constructs an EntityContainerEntitySet
  25         /// </summary>
  26         /// <param name="parentElement">Reference to the schema element.</param>
  27         public EntityContainerEntitySetDefiningQuery(EntityContainerEntitySet parentElement)
  28             : base( parentElement )
  29         {
  30         }
  31
  32         public string Query
  33         {
  34             get { return _query; }
  35         }
  36
  37         protected override bool HandleText(XmlReader reader)
  38         {
  39             _query = reader.Value;
  40             return true;
  41         }
  42
  43         internal override void Validate()
  44         {
  45             base.Validate();
  46
  47             if(String.IsNullOrEmpty(_query))
  48             {
  49                 AddError(ErrorCode.EmptyDefiningQuery, EdmSchemaErrorSeverity.Error,
  50                     System.Data.Entity.Strings.EmptyDefiningQuery);
  51             }
  52         }
  53    }
  54 }