SqlUserDefinedTypeAttribute.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / Sql / SqlUserDefinedTypeAttribute.cs / 1 / SqlUserDefinedTypeAttribute.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation. All Rights Reserved.
//     Information Contained Herein is Proprietary and Confidential.
//   
// [....]
// [....] 
// daltudov 
// [....]
// beysims 
// [....]
// vadimt
// venkar
// [....] 
//-----------------------------------------------------------------------------
 
namespace Microsoft.SqlServer.Server { 

    using System; 
    using System.Data.Common;

    public enum Format { //: byte
        Unknown                    = 0, 
        Native                     = 1,
        UserDefined                = 2, 
#if WINFSFunctionality 
        // Only applies to WinFS
        Structured                 = 4 
#endif
    }

    // This custom attribute indicates that the given type is 
    // a SqlServer udt. The properties on the attribute reflect the
    // physical attributes that will be used when the type is registered 
    // with SqlServer. 
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct, AllowMultiple=false, Inherited=true)]
    public sealed class SqlUserDefinedTypeAttribute: Attribute { 
        private int m_MaxByteSize;
        private bool m_IsFixedLength;
        private bool m_IsByteOrdered;
        private Format m_format; 
        private string m_fName;
 
        // The maximum value for the maxbytesize field, in bytes. 
        internal const int YukonMaxByteSizeValue = 8000;
        private String m_ValidationMethodName = null; 


        // A required attribute on all udts, used to indicate that the
        // given type is a udt, and its storage format. 
        public SqlUserDefinedTypeAttribute(Format format) {
            switch(format) { 
            case Format.Unknown: 
                throw ADP.NotSupportedUserDefinedTypeSerializationFormat((Microsoft.SqlServer.Server.Format)format, "format");
            case Format.Native: 
            case Format.UserDefined:
#if WINFSFunctionality
            case Format.Structured:
#endif 
                this.m_format = format;
                break; 
            default: 
                throw ADP.InvalidUserDefinedTypeSerializationFormat((Microsoft.SqlServer.Server.Format)format);
            } 
        }

        // The maximum size of this instance, in bytes. Does not have to be
        // specified for Native serialization. The maximum value 
        // for this property is specified by MaxByteSizeValue.
        public int MaxByteSize { 
            get { 
                return this.m_MaxByteSize;
            } 
            set {
                if (value < -1) {
                    throw ADP.ArgumentOutOfRange("MaxByteSize");
                } 
                this.m_MaxByteSize = value;
            } 
        } 

        // Are all instances of this udt the same size on disk? 
        public bool IsFixedLength {
            get {
                return this.m_IsFixedLength;
            } 
            set {
                this.m_IsFixedLength = value; 
            } 
        }
 
        // Is this type byte ordered, i.e. is the on disk representation
        // consistent with the ordering semantics for this type?
        // If true, the binary representation of the type will be used
        // in comparison by SqlServer. This property enables indexing on the 
        // udt and faster comparisons.
        public bool IsByteOrdered { 
            get { 
                return this.m_IsByteOrdered;
            } 
            set {
                this.m_IsByteOrdered = value;
            }
        } 

        // The on-disk format for this type. 
        public Format Format { 
            get {
                return this.m_format; 
            }
        }

        // An Optional method used to validate this UDT 
        // Signature: bool <ValidationMethodName>();
        public String ValidationMethodName { 
            get 
            {
                return this.m_ValidationMethodName; 
            }
            set
            {
                this.m_ValidationMethodName = value; 
            }
        } 
 
        public string Name {
            get { 
                return m_fName;
            }
            set {
                m_fName = value; 
            }
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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