private SetToNullOfType ( StorageType storageType ) : void | ||
storageType | StorageType | |
리턴 | void |
private static void GetNullOutputParameterSmi(SmiMetaData metaData, SqlBuffer targetBuffer, ref object result) { if (SqlDbType.Udt == metaData.SqlDbType) { result = NullUdtInstance(metaData); } else { SqlBuffer.StorageType stype = SqlDbTypeToStorageType(metaData.SqlDbType); if ( SqlBuffer.StorageType.Empty == stype ) { result = DBNull.Value; } else if (SqlBuffer.StorageType.SqlBinary == stype) { // special case SqlBinary, 'cause tds parser never sets SqlBuffer to null, just to empty! targetBuffer.SqlBinary = SqlBinary.Null; } else if (SqlBuffer.StorageType.SqlGuid == stype) { targetBuffer.SqlGuid = SqlGuid.Null; } else { targetBuffer.SetToNullOfType( stype ); } } }
internal object GetNullSqlValue(SqlBuffer nullVal, SqlMetaDataPriv md) { switch (md.type) { case SqlDbType.Real: nullVal.SetToNullOfType(SqlBuffer.StorageType.Single); break; case SqlDbType.Float: nullVal.SetToNullOfType(SqlBuffer.StorageType.Double); break; case SqlDbType.Udt: case SqlDbType.Binary: case SqlDbType.VarBinary: case SqlDbType.Image: nullVal.SqlBinary = SqlBinary.Null; break; case SqlDbType.UniqueIdentifier: nullVal.SqlGuid = SqlGuid.Null; break; case SqlDbType.Bit: nullVal.SetToNullOfType(SqlBuffer.StorageType.Boolean); break; case SqlDbType.TinyInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Byte); break; case SqlDbType.SmallInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int16); break; case SqlDbType.Int: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int32); break; case SqlDbType.BigInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int64); break; case SqlDbType.Char: case SqlDbType.VarChar: case SqlDbType.NChar: case SqlDbType.NVarChar: case SqlDbType.Text: case SqlDbType.NText: nullVal.SetToNullOfType(SqlBuffer.StorageType.String); break; case SqlDbType.Decimal: nullVal.SetToNullOfType(SqlBuffer.StorageType.Decimal); break; case SqlDbType.DateTime: case SqlDbType.SmallDateTime: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTime); break; case SqlDbType.Money: case SqlDbType.SmallMoney: nullVal.SetToNullOfType(SqlBuffer.StorageType.Money); break; case SqlDbType.Variant: // DBNull.Value will have to work here nullVal.SetToNullOfType(SqlBuffer.StorageType.Empty); break; case SqlDbType.Xml: nullVal.SqlCachedBuffer = SqlCachedBuffer.Null; break; case SqlDbType.Date: nullVal.SetToNullOfType(SqlBuffer.StorageType.Date); break; case SqlDbType.Time: nullVal.SetToNullOfType(SqlBuffer.StorageType.Time); break; case SqlDbType.DateTime2: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTime2); break; case SqlDbType.DateTimeOffset: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTimeOffset); break; case SqlDbType.Timestamp: break; default: Debug.Assert(false, "unknown null sqlType!" + md.type.ToString()); break; } return nullVal; }
internal static object GetNullSqlValue( SqlBuffer nullVal, SqlMetaDataPriv md, SqlCommandColumnEncryptionSetting columnEncryptionSetting, SqlInternalConnectionTds connection) { SqlDbType type = md.type; if (type == SqlDbType.VarBinary && // if its a varbinary md.isEncrypted &&// and encrypted ShouldHonorTceForRead(columnEncryptionSetting, connection)){ type = md.baseTI.type; // the use the actual (plaintext) type } switch (type) { case SqlDbType.Real: nullVal.SetToNullOfType(SqlBuffer.StorageType.Single); break; case SqlDbType.Float: nullVal.SetToNullOfType(SqlBuffer.StorageType.Double); break; case SqlDbType.Udt: case SqlDbType.Binary: case SqlDbType.VarBinary: case SqlDbType.Image: nullVal.SqlBinary = SqlBinary.Null; break; case SqlDbType.UniqueIdentifier: nullVal.SqlGuid = SqlGuid.Null; break; case SqlDbType.Bit: nullVal.SetToNullOfType(SqlBuffer.StorageType.Boolean); break; case SqlDbType.TinyInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Byte); break; case SqlDbType.SmallInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int16); break; case SqlDbType.Int: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int32); break; case SqlDbType.BigInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int64); break; case SqlDbType.Char: case SqlDbType.VarChar: case SqlDbType.NChar: case SqlDbType.NVarChar: case SqlDbType.Text: case SqlDbType.NText: nullVal.SetToNullOfType(SqlBuffer.StorageType.String); break; case SqlDbType.Decimal: nullVal.SetToNullOfType(SqlBuffer.StorageType.Decimal); break; case SqlDbType.DateTime: case SqlDbType.SmallDateTime: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTime); break; case SqlDbType.Money: case SqlDbType.SmallMoney: nullVal.SetToNullOfType(SqlBuffer.StorageType.Money); break; case SqlDbType.Variant: // DBNull.Value will have to work here nullVal.SetToNullOfType(SqlBuffer.StorageType.Empty); break; case SqlDbType.Xml: nullVal.SqlCachedBuffer = SqlCachedBuffer.Null; break; case SqlDbType.Date: nullVal.SetToNullOfType(SqlBuffer.StorageType.Date); break; case SqlDbType.Time: nullVal.SetToNullOfType(SqlBuffer.StorageType.Time); break; case SqlDbType.DateTime2: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTime2); break; case SqlDbType.DateTimeOffset: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTimeOffset); break; case SqlDbType.Timestamp: // Dev10 Bug #479607 - this should have been the same as SqlDbType.Binary, but it's a rejected breaking change // Dev10 Bug #752790 - don't assert when it does happen break; default: Debug.Assert(false, "unknown null sqlType!" + md.type.ToString()); break; } return nullVal; }
private static void GetNullOutputParameterSmi(SmiMetaData metaData, SqlBuffer targetBuffer, ref object result) { if (SqlDbType.Udt == metaData.SqlDbType) { result = NullUdtInstance(metaData); } else { SqlBuffer.StorageType storageType = __dbTypeToStorageType[(int) metaData.SqlDbType]; if (storageType == SqlBuffer.StorageType.Empty) { result = DBNull.Value; } else if (SqlBuffer.StorageType.SqlBinary == storageType) { targetBuffer.SqlBinary = SqlBinary.Null; } else if (SqlBuffer.StorageType.SqlGuid == storageType) { targetBuffer.SqlGuid = SqlGuid.Null; } else { targetBuffer.SetToNullOfType(storageType); } } }
internal object GetNullSqlValue(SqlBuffer nullVal, SqlMetaDataPriv md) { switch (md.type) { case SqlDbType.BigInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int64); return nullVal; case SqlDbType.Binary: case SqlDbType.Image: case SqlDbType.VarBinary: case SqlDbType.Udt: nullVal.SqlBinary = SqlBinary.Null; return nullVal; case SqlDbType.Bit: nullVal.SetToNullOfType(SqlBuffer.StorageType.Boolean); return nullVal; case SqlDbType.Char: case SqlDbType.NChar: case SqlDbType.NText: case SqlDbType.NVarChar: case SqlDbType.Text: case SqlDbType.VarChar: nullVal.SetToNullOfType(SqlBuffer.StorageType.String); return nullVal; case SqlDbType.DateTime: case SqlDbType.SmallDateTime: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTime); return nullVal; case SqlDbType.Decimal: nullVal.SetToNullOfType(SqlBuffer.StorageType.Decimal); return nullVal; case SqlDbType.Float: nullVal.SetToNullOfType(SqlBuffer.StorageType.Double); return nullVal; case SqlDbType.Int: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int32); return nullVal; case SqlDbType.Money: case SqlDbType.SmallMoney: nullVal.SetToNullOfType(SqlBuffer.StorageType.Money); return nullVal; case SqlDbType.Real: nullVal.SetToNullOfType(SqlBuffer.StorageType.Single); return nullVal; case SqlDbType.UniqueIdentifier: nullVal.SqlGuid = SqlGuid.Null; return nullVal; case SqlDbType.SmallInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Int16); return nullVal; case SqlDbType.Timestamp: case (SqlDbType.SmallInt | SqlDbType.Int): case (SqlDbType.Text | SqlDbType.Int): case (SqlDbType.Xml | SqlDbType.Bit): case (SqlDbType.TinyInt | SqlDbType.Int): case SqlDbType.Structured: return nullVal; case SqlDbType.TinyInt: nullVal.SetToNullOfType(SqlBuffer.StorageType.Byte); return nullVal; case SqlDbType.Variant: nullVal.SetToNullOfType(SqlBuffer.StorageType.Empty); return nullVal; case SqlDbType.Xml: nullVal.SqlCachedBuffer = SqlCachedBuffer.Null; return nullVal; case SqlDbType.Date: nullVal.SetToNullOfType(SqlBuffer.StorageType.Date); return nullVal; case SqlDbType.Time: nullVal.SetToNullOfType(SqlBuffer.StorageType.Time); return nullVal; case SqlDbType.DateTime2: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTime2); return nullVal; case SqlDbType.DateTimeOffset: nullVal.SetToNullOfType(SqlBuffer.StorageType.DateTimeOffset); return nullVal; } return nullVal; }