TdsParameterSetter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / SqlClient / TdsParameterSetter.cs / 1305376 / TdsParameterSetter.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
// [....] 
//----------------------------------------------------------------------------- 

namespace System.Data.SqlClient { 
    using System;
    using System.Data;
    using System.Data.SqlTypes;
    using System.Diagnostics; 

    using Microsoft.SqlServer.Server; 
 
    // Simple Getter/Setter for structured parameters to allow using common ValueUtilsSmi code.
    //  This is a stand-in to having a true SmiRequestExecutor class for TDS. 
    internal class TdsParameterSetter : SmiTypedGetterSetter {

        #region Private fields
 
        private TdsRecordBufferSetter _target;
 
#if UseSmiForTds 
        private TdsValueSetter _scalarTarget;
#endif 
        #endregion

        #region ctor & control
 
        internal TdsParameterSetter(TdsParserStateObject stateObj, SmiMetaData md) {
#if UseSmiForTds 
            if (SqlDbType.Structured == md.SqlDbType) { 
#endif
            _target = new TdsRecordBufferSetter(stateObj, md); 
#if UseSmiForTds
            }
            else {
                _scalarTarget = new TdsValueSetter(stateObj, md); 
            }
#endif 
        } 

        #endregion 

        #region TypedGetterSetter overrides
        // Are calls to Get methods allowed?
        internal override bool CanGet { 
            get {
                return false; 
            } 
        }
 
        // Are calls to Set methods allowed?
        internal override bool CanSet {
            get {
                return true; 
            }
        } 
 
        // valid for structured types
        //  This method called for both get and set. 
        internal override SmiTypedGetterSetter GetTypedGetterSetter(SmiEventSink sink, int ordinal) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            return _target;
        } 

        // Set value to null 
        //  valid for all types 
        public override void SetDBNull(SmiEventSink sink, int ordinal) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal); 

#if UseSmiForTds
            if (SqlDbType.Structured == md.SqlDbType) {
#endif 
                _target.EndElements(sink);
 
#if UseSmiForTds 
            }
            else { 
                _scalarTarget.SetDBNull();
            }
#endif
        } 

#if UseSmiForTds 
        //  valid for SqlDbType.Bit 
        public override void SetBoolean(SmiEventSink sink, int ordinal, Boolean value) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal); 
            _scalarTarget.SetBoolean(value);
        }

        //  valid for SqlDbType.TinyInt 
        public override void SetByte(SmiEventSink sink, int ordinal, Byte value) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal); 
            _scalarTarget.SetByte(value); 
        }
 
        // Semantics for SetBytes are to modify existing value, not overwrite
        //  Use in combination with SetLength to ensure overwriting when necessary
        // valid for SqlDbTypes: Binary, VarBinary, Image, Udt, Xml
        //      (VarBinary assumed for variants) 
        public override int SetBytes(SmiEventSink sink, int ordinal, long fieldOffset, byte[] buffer, int bufferOffset, int length) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal); 
            return _scalarTarget.SetBytes(fieldOffset, buffer, bufferOffset, length); 
        }
        public override void SetBytesLength(SmiEventSink sink, int ordinal, long length) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetBytesLength(length);
        }
 
        // Semantics for SetChars are to modify existing value, not overwrite
        //  Use in combination with SetLength to ensure overwriting when necessary 
        // valid for character types: Char, VarChar, Text, NChar, NVarChar, NText 
        //      (NVarChar and global clr collation assumed for variants)
        public override int SetChars(SmiEventSink sink, int ordinal, long fieldOffset, char[] buffer, int bufferOffset, int length) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            return _scalarTarget.SetChars(fieldOffset, buffer, bufferOffset, length);
        }
        public override void SetCharsLength(SmiEventSink sink, int ordinal, long length) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetCharsLength(length); 
        } 

        // valid for character types: Char, VarChar, Text, NChar, NVarChar, NText 
        public override void SetString(SmiEventSink sink, int ordinal, string value, int offset, int length) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetString(value, offset, length);
        } 

        // valid for SqlDbType.SmallInt 
        public override void SetInt16(SmiEventSink sink, int ordinal, Int16 value) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetInt16(value); 
        }

        // valid for SqlDbType.Int
        public override void SetInt32(SmiEventSink sink, int ordinal, Int32 value) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetInt32(value); 
        } 

        // valid for SqlDbType.BigInt, SqlDbType.Money, SqlDbType.SmallMoney 
        public override void SetInt64(SmiEventSink sink, int ordinal, Int64 value) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetInt64(value);
        } 

        // valid for SqlDbType.Real 
        public override void SetSingle(SmiEventSink sink, int ordinal, Single value) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetSingle(value); 
        }

        // valid for SqlDbType.Float
        public override void SetDouble(SmiEventSink sink, int ordinal,  Double value) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetDouble(value); 
        } 

        // valid for SqlDbType.Numeric (uses SqlDecimal since Decimal cannot hold full range) 
        public override void SetSqlDecimal(SmiEventSink sink, int ordinal, SqlDecimal value) {
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetSqlDecimal(value);
        } 

        // valid for DateTime & SmallDateTime 
        public override void SetDateTime(SmiEventSink sink, int ordinal, DateTime value) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetDateTime(value); 
        }

        // valid for UniqueIdentifier
        public override void SetGuid(SmiEventSink sink, int ordinal, Guid value) { 
            Debug.Assert(0==ordinal, "TdsParameterSetter only supports 0 for ordinal.  Actual = " + ordinal);
            _scalarTarget.SetGuid(value); 
        } 
#endif
        #endregion 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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TdsParameterSetter.cs source code in C# .NET

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