2 // Mono.Data.Tds.Protocol.TdsBulkCopy.cs
5 // Nagappan A (anagappan@novell.com)
7 // Copyright (C) 2007 Novell Inc
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 namespace Mono.Data.Tds.Protocol {
33 public class TdsBulkCopy
42 public TdsBulkCopy (Tds tds)
50 public bool SendColumnMetaData (string colMetaData)
52 tds.Comm.StartPacket (TdsPacketType.Query);
53 tds.Comm.Append (colMetaData);
54 tds.ExecBulkCopyMetaData (30, false);
58 public bool BulkCopyStart (TdsMetaParameterCollection parameters)
60 tds.Comm.StartPacket (TdsPacketType.Bulk);
61 tds.Comm.Append ((byte) TdsPacketSubType.ColumnMetadata);
63 foreach (TdsMetaParameter param in parameters) {
64 if (param.Value != null)
68 tds.Comm.Append (count);
69 if (parameters != null) {
70 foreach (TdsMetaParameter param in parameters) {
71 if (param.Value != null)
73 tds.Comm.Append ((short) 0x00);
74 tds.Comm.Append ((short) 0x0a);
75 WriteParameterInfo (param);
76 tds.Comm.Append ((byte) param.ParameterName.Length);
77 tds.Comm.Append (param.ParameterName);
83 public bool BulkCopyData (object o, int size, bool isNewRow)
86 tds.Comm.Append ((byte) TdsPacketSubType.Row);
89 tds.Comm.Append ((short) size);
95 public bool BulkCopyEnd ()
97 tds.Comm.Append ((short) TdsPacketSubType.Done);
98 tds.ExecBulkCopy (30, false);
102 private void WriteParameterInfo (TdsMetaParameter param)
105 Ms.net send non-nullable datatypes as nullable and allows setting null values
106 to int/float etc.. So, using Nullable form of type for all data
108 param.IsNullable = true;
109 TdsColumnType colType = param.GetMetaType ();
110 param.IsNullable = false;
112 tds.Comm.Append ((byte)colType); // type
116 size = param.GetActualSize ();
121 If column type is SqlDbType.NVarChar the size of parameter is multiplied by 2
122 FIXME: Need to check for other types
124 if (colType == TdsColumnType.BigNVarChar)
126 if (tds.IsLargeType (colType))
127 tds.Comm.Append ((short)size); // Parameter size passed in SqlParameter
128 else if (tds.IsBlobType (colType))
129 tds.Comm.Append (size); // Parameter size passed in SqlParameter
131 tds.Comm.Append ((byte)size);
133 // Precision and Scale are non-zero for only decimal/numeric
134 if ( param.TypeName == "decimal" || param.TypeName == "numeric") {
135 tds.Comm.Append ((param.Precision!=0)?param.Precision:(byte)29);
136 tds.Comm.Append (param.Scale);