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sql_variant #1293

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15d44a2
[Mono.Data.Tds] sql_variant tds reading ability
Sep 19, 2014
49313bc
[Mono.Data.Tds] Tds.cs remove 2 methods that don't need
Sep 19, 2014
10c0dce
Merge remote-tracking branch 'upstream/master'
psni May 19, 2015
48e2258
Merge remote-tracking branch 'upstream/master'
psni Jun 15, 2015
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27 changes: 26 additions & 1 deletion mcs/class/Mono.Data.Tds/Mono.Data.Tds.Protocol/Tds.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -762,6 +762,31 @@ private object GetColumnValue (
}

switch (colType) {
case TdsColumnType.Variant:
/* sql variant max size */
Comm.GetTdsInt ();
byte type = Comm.GetByte ();
byte propbyte = Comm.GetByte ();
TdsColumnType realType = (TdsColumnType)(type & 0xff);
if (realType == TdsColumnType.NVarChar ||
realType == TdsColumnType.BigNVarChar ||
realType == TdsColumnType.VarChar ||
realType == TdsColumnType.BigVarChar) {
byte[] collation = null;
collation = Comm.GetBytes (5, true);
lcid = TdsCollation.LCID (collation);
sortId = TdsCollation.SortId (collation);
#if NET_2_0
columns[ordinal].LCID = lcid;
columns[ordinal].SortOrder = sortId;
#else
columns[ordinal]["LCID"] = lcid;
columns[ordinal]["SortOrder"] = sortId;
#endif

}
element = GetColumnValue ((TdsColumnType)type, outParam, ordinal);
break;
case TdsColumnType.IntN :
if (outParam)
comm.Skip (1);
Expand Down Expand Up @@ -1248,7 +1273,7 @@ private object GetMoneyValue (
return DBNull.Value;
}
}

protected object GetStringValue (
TdsColumnType? colType,
bool wideChars, bool outputParam, Encoding encoder)
Expand Down
74 changes: 39 additions & 35 deletions mcs/class/Mono.Data.Tds/Mono.Data.Tds.Protocol/Tds80.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -94,24 +94,34 @@ protected override void ProcessColumnInfo ()
base.ProcessColumnInfo ();
return;
}

// VARADHAN: TDS 8 Debugging
//Console.WriteLine ("Tds80.cs: In ProcessColumnInfo... entry");
int numColumns = Comm.GetTdsShort ();

int columnSize = 0;
string tableName = null;
byte[] collation = null;
int lcid = 0, sortId = 0;

byte precision = 0;
byte scale = 0;

//Console.WriteLine ("Column count={0}", numColumns); TDS 8 Debugging
for (int i = 0; i < numColumns; i += 1) {
byte[] flagData = new byte[4];
for (int j = 0; j < 4; j += 1)
flagData[j] = Comm.GetByte ();
for (int j = 0; j < 4; j += 1) {
flagData [j] = Comm.GetByte ();
}

bool nullable = (flagData[2] & 0x01) > 0;
//bool caseSensitive = (flagData[2] & 0x02) > 0;
bool writable = (flagData[2] & 0x0c) > 0;
bool autoIncrement = (flagData[2] & 0x10) > 0;
bool isIdentity = (flagData[2] & 0x10) > 0;

TdsColumnType columnType = (TdsColumnType) (Comm.GetByte () & 0xff);
//Console.WriteLine ("Actual ColumnType: {0}", columnType); TDS 8 Debugging
byte nextbyte = Comm.GetByte();
string columnName = "";

TdsColumnType columnType = (TdsColumnType) (nextbyte & 0xff);
//Console.WriteLine ("Actual ColumnType: {0}", columnType); // TDS 8 Debugging

if ((byte) columnType == 0xef)
columnType = TdsColumnType.NChar;
Expand All @@ -121,39 +131,33 @@ protected override void ProcessColumnInfo ()
if (columnType != TdsColumnType.NChar)
columnType -= 128;
}

int columnSize;
string tableName = null;
byte[] collation = null;
int lcid = 0, sortId = 0;


if (IsBlobType (columnType)) {
columnSize = Comm.GetTdsInt ();
} else if (IsFixedSizeColumn (columnType)) {
columnSize = LookupBufferSize (columnType);
} else if (IsLargeType (xColumnType)) {
columnSize = Comm.GetTdsShort ();
} else {
columnSize = Comm.GetByte () & 0xff;
}

if (xColumnType == TdsColumnType.BigChar || xColumnType == TdsColumnType.BigNVarChar ||
xColumnType == TdsColumnType.BigVarChar || xColumnType == TdsColumnType.NChar ||
xColumnType == TdsColumnType.NVarChar || xColumnType == TdsColumnType.Text ||
xColumnType == TdsColumnType.NText) {
// Read collation for SqlServer 2000 and beyond
collation = Comm.GetBytes (5, true);
lcid = TdsCollation.LCID (collation);
sortId = TdsCollation.SortId (collation);
}

if (IsBlobType (columnType)) {
tableName = Comm.GetString (Comm.GetTdsShort ());
//Console.WriteLine ("Tablename: "+tableName); TDS 8 Debugging
}

byte precision = 0;
byte scale = 0;
} else if (columnType == TdsColumnType.Variant) {
columnSize = Comm.GetTdsInt ();
} else {
columnSize = Comm.GetByte () & 0xff;
}

if (xColumnType == TdsColumnType.BigChar || xColumnType == TdsColumnType.BigNVarChar ||
xColumnType == TdsColumnType.BigVarChar || xColumnType == TdsColumnType.NChar ||
xColumnType == TdsColumnType.NVarChar || xColumnType == TdsColumnType.Text ||
xColumnType == TdsColumnType.NText) {
// Read collation for SqlServer 2000 and beyond
collation = Comm.GetBytes (5, true);
lcid = TdsCollation.LCID (collation);
sortId = TdsCollation.SortId (collation);
}

if (IsBlobType (columnType)) {
tableName = Comm.GetString (Comm.GetTdsShort ());
//Console.WriteLine ("Tablename: "+tableName); TDS 8 Debugging
}

switch (columnType) {
case TdsColumnType.NText:
Expand All @@ -171,7 +175,7 @@ protected override void ProcessColumnInfo ()
break;
}

string columnName = Comm.GetString (Comm.GetByte ());
columnName = Comm.GetString (Comm.GetByte ());

TdsDataColumn col = new TdsDataColumn ();
Columns.Add (col);
Expand Down
11 changes: 11 additions & 0 deletions mcs/class/Mono.Data.Tds/Mono.Data.Tds.Protocol/TdsComm.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -513,6 +513,17 @@ public bool IsConnected ()
{
return socket != null && socket.Connected && !(socket.Poll (0, SelectMode.SelectRead) && socket.Available == 0);
}

/* this two methods need to read sql variant type from database */
public int GetInBufferIndex()
{
return inBufferIndex;
}

public void SetInBufferIndex(int index)
{
inBufferIndex = index;
}

public byte GetByte ()
{
Expand Down