| private SetToDateTime2 ( System.DateTime dateTime, byte scale ) : void | ||
| dateTime | System.DateTime | |
| scale | byte | |
| Результат | void | |
// UDTs and null variants come back via return value, all else is via targetBuffer.
// implements SqlClient 1.1-compatible output parameter semantics
internal static object GetOutputParameterV200Smi(
SmiEventSink_Default sink, // event sink for errors
SmiTypedGetterSetter getters, // getters interface to grab value from
int ordinal, // parameter within getters
SmiMetaData metaData, // Getter's type for this ordinal
SmiContext context, // used to obtain scratch streams
SqlBuffer targetBuffer // destination
) {
object result = null; // Workaround for UDT hack in non-Smi code paths.
if ( IsDBNull_Unchecked( sink, getters, ordinal ) ) {
GetNullOutputParameterSmi(metaData, targetBuffer, ref result);
}
else {
switch(metaData.SqlDbType) {
// new types go here
case SqlDbType.Variant: // Handle variants specifically for v200, since they could contain v200 types
// For variants, recur using the current value's sqldbtype
metaData = getters.GetVariantType( sink, ordinal );
sink.ProcessMessagesAndThrow();
Debug.Assert( SqlDbType.Variant != metaData.SqlDbType, "Variant-within-variant not supposed to be possible!" );
GetOutputParameterV200Smi( sink, getters, ordinal, metaData, context, targetBuffer );
break;
case SqlDbType.Date:
targetBuffer.SetToDate(GetDateTime_Unchecked(sink, getters, ordinal));
break;
case SqlDbType.DateTime2:
targetBuffer.SetToDateTime2(GetDateTime_Unchecked(sink, getters, ordinal), metaData.Scale);
break;
case SqlDbType.Time:
targetBuffer.SetToTime(GetTimeSpan_Unchecked(sink, getters, ordinal), metaData.Scale);
break;
case SqlDbType.DateTimeOffset:
targetBuffer.SetToDateTimeOffset(GetDateTimeOffset_Unchecked(sink, getters, ordinal), metaData.Scale);
break;
default:
result = GetOutputParameterV3Smi(sink, getters, ordinal, metaData, context, targetBuffer);
break;
}
}
return result;
}
private bool TryReadSqlDateTime(SqlBuffer value, byte tdsType, int length, byte scale, TdsParserStateObject stateObj)
{
byte[] datetimeBuffer = new byte[length];
if (!stateObj.TryReadByteArray(datetimeBuffer, 0, length))
{
return false;
}
switch (tdsType)
{
case TdsEnums.SQLDATE:
Debug.Assert(length == 3, "invalid length for date type!");
value.SetToDate(datetimeBuffer);
break;
case TdsEnums.SQLTIME:
Debug.Assert(3 <= length && length <= 5, "invalid length for time type!");
value.SetToTime(datetimeBuffer, length, scale);
break;
case TdsEnums.SQLDATETIME2:
Debug.Assert(6 <= length && length <= 8, "invalid length for datetime2 type!");
value.SetToDateTime2(datetimeBuffer, length, scale);
break;
case TdsEnums.SQLDATETIMEOFFSET:
Debug.Assert(8 <= length && length <= 10, "invalid length for datetimeoffset type!");
value.SetToDateTimeOffset(datetimeBuffer, length, scale);
break;
default:
Debug.Assert(false, "ReadSqlDateTime is called with the wrong tdsType");
break;
}
return true;
}
/// <summary>
/// Deserializes the unencrypted bytes into a value based on the target type info.
/// </summary>
internal bool DeserializeUnencryptedValue (SqlBuffer value, byte[] unencryptedBytes, SqlMetaDataPriv md, TdsParserStateObject stateObj, byte normalizationVersion) {
if (normalizationVersion != 0x01) {
throw SQL.UnsupportedNormalizationVersion(normalizationVersion);
}
byte tdsType = md.baseTI.tdsType;
int length = unencryptedBytes.Length;
// For normalized types, the length and scale of the actual type might be different than the value's.
int denormalizedLength = md.baseTI.length;
byte denormalizedScale = md.baseTI.scale;
Debug.Assert (false == md.baseTI.isEncrypted, "Double encryption detected");
switch (tdsType) {
// We normalize to allow conversion across data types. All data types below are serialized into a BIGINT.
case TdsEnums.SQLBIT:
case TdsEnums.SQLBITN:
case TdsEnums.SQLINTN:
case TdsEnums.SQLINT1:
case TdsEnums.SQLINT2:
case TdsEnums.SQLINT4:
case TdsEnums.SQLINT8:
Debug.Assert(length == 8, "invalid length for SqlInt64 type!");
byte byteValue;
long longValue;
if (unencryptedBytes.Length != 8) {
return false;
}
longValue = BitConverter.ToInt64(unencryptedBytes, 0);
if (tdsType == TdsEnums.SQLBIT ||
tdsType == TdsEnums.SQLBITN) {
value.Boolean = (longValue != 0);
break;
}
if (tdsType == TdsEnums.SQLINT1 || denormalizedLength == 1)
value.Byte = (byte)longValue;
else if (tdsType == TdsEnums.SQLINT2 || denormalizedLength == 2)
value.Int16 = (Int16)longValue;
else if (tdsType == TdsEnums.SQLINT4 || denormalizedLength == 4)
value.Int32 = (Int32)longValue;
else
value.Int64 = longValue;
break;
case TdsEnums.SQLFLTN:
if (length == 4) {
goto case TdsEnums.SQLFLT4;
}
else {
goto case TdsEnums.SQLFLT8;
}
case TdsEnums.SQLFLT4:
Debug.Assert(length == 4, "invalid length for SqlSingle type!");
float singleValue;
if (unencryptedBytes.Length != 4) {
return false;
}
singleValue = BitConverter.ToSingle(unencryptedBytes, 0);
value.Single = singleValue;
break;
case TdsEnums.SQLFLT8:
double doubleValue;
if (unencryptedBytes.Length != 8) {
return false;
}
doubleValue = BitConverter.ToDouble(unencryptedBytes, 0);
value.Double = doubleValue;
break;
// We normalize to allow conversion across data types. SMALLMONEY is serialized into a MONEY.
case TdsEnums.SQLMONEYN:
case TdsEnums.SQLMONEY4:
case TdsEnums.SQLMONEY:
{
int mid;
uint lo;
if (unencryptedBytes.Length != 8) {
return false;
}
mid = BitConverter.ToInt32(unencryptedBytes, 0);
lo = BitConverter.ToUInt32(unencryptedBytes, 4);
long l = (((long)mid) << 0x20) + ((long)lo);
value.SetToMoney(l);
break;
}
case TdsEnums.SQLDATETIMN:
if (length == 4) {
goto case TdsEnums.SQLDATETIM4;
}
else {
goto case TdsEnums.SQLDATETIME;
}
case TdsEnums.SQLDATETIM4:
ushort daypartShort, timepartShort;
if (unencryptedBytes.Length != 4) {
return false;
}
daypartShort = (UInt16)((unencryptedBytes[1] << 8) + unencryptedBytes[0]);
timepartShort = (UInt16)((unencryptedBytes[3] << 8) + unencryptedBytes[2]);
value.SetToDateTime(daypartShort, timepartShort * SqlDateTime.SQLTicksPerMinute);
break;
case TdsEnums.SQLDATETIME:
int daypart;
uint timepart;
if (unencryptedBytes.Length != 8) {
return false;
}
daypart = BitConverter.ToInt32(unencryptedBytes, 0);
timepart = BitConverter.ToUInt32(unencryptedBytes, 4);
value.SetToDateTime(daypart, (int)timepart);
break;
case TdsEnums.SQLUNIQUEID:
{
Debug.Assert(length == 16, "invalid length for SqlGuid type!");
value.SqlGuid = new SqlGuid(unencryptedBytes, true); // doesn't copy the byte array
break;
}
case TdsEnums.SQLBINARY:
case TdsEnums.SQLBIGBINARY:
case TdsEnums.SQLBIGVARBINARY:
case TdsEnums.SQLVARBINARY:
case TdsEnums.SQLIMAGE:
{
// Note: Better not come here with plp data!!
Debug.Assert(length <= TdsEnums.MAXSIZE, "Plp data decryption attempted");
// If this is a fixed length type, pad with zeros to get to the fixed length size.
if (tdsType == TdsEnums.SQLBINARY || tdsType == TdsEnums.SQLBIGBINARY) {
byte[] bytes = new byte[md.baseTI.length];
Buffer.BlockCopy(unencryptedBytes, 0, bytes, 0, unencryptedBytes.Length);
unencryptedBytes = bytes;
}
value.SqlBinary = new SqlBinary(unencryptedBytes, true); // doesn't copy the byte array
break;
}
case TdsEnums.SQLDECIMALN:
case TdsEnums.SQLNUMERICN:
// Check the sign from the first byte.
int index = 0;
byteValue = unencryptedBytes[index++];
bool fPositive = (1 == byteValue);
// Now read the 4 next integers which contain the actual value.
length = checked((int)length-1);
int[] bits = new int[4];
int decLength = length>>2;
for (int i = 0; i < decLength; i++) {
// up to 16 bytes of data following the sign byte
bits[i] = BitConverter.ToInt32(unencryptedBytes, index);
index += 4;
}
value.SetToDecimal (md.baseTI.precision, md.baseTI.scale, fPositive, bits);
break;
case TdsEnums.SQLCHAR:
case TdsEnums.SQLBIGCHAR:
case TdsEnums.SQLVARCHAR:
case TdsEnums.SQLBIGVARCHAR:
case TdsEnums.SQLTEXT:
{
System.Text.Encoding encoding = md.baseTI.encoding;
if (null == encoding) {
encoding = _defaultEncoding;
}
if (null == encoding) {
ThrowUnsupportedCollationEncountered(stateObj);
}
string strValue = encoding.GetString(unencryptedBytes, 0, length);
// If this is a fixed length type, pad with spaces to get to the fixed length size.
if (tdsType == TdsEnums.SQLCHAR || tdsType == TdsEnums.SQLBIGCHAR) {
strValue = strValue.PadRight(md.baseTI.length);
}
value.SetToString(strValue);
break;
}
case TdsEnums.SQLNCHAR:
case TdsEnums.SQLNVARCHAR:
case TdsEnums.SQLNTEXT:
{
string strValue = System.Text.Encoding.Unicode.GetString(unencryptedBytes, 0, length);
// If this is a fixed length type, pad with spaces to get to the fixed length size.
if (tdsType == TdsEnums.SQLNCHAR) {
strValue = strValue.PadRight(md.baseTI.length / ADP.CharSize);
}
value.SetToString(strValue);
break;
}
case TdsEnums.SQLDATE:
Debug.Assert(length == 3, "invalid length for date type!");
value.SetToDate(unencryptedBytes);
break;
case TdsEnums.SQLTIME:
// We normalize to maximum precision to allow conversion across different precisions.
Debug.Assert(length == 5, "invalid length for time type!");
value.SetToTime(unencryptedBytes, length, TdsEnums.MAX_TIME_SCALE, denormalizedScale);
break;
case TdsEnums.SQLDATETIME2:
// We normalize to maximum precision to allow conversion across different precisions.
Debug.Assert(length == 8, "invalid length for datetime2 type!");
value.SetToDateTime2(unencryptedBytes, length, TdsEnums.MAX_TIME_SCALE, denormalizedScale);
break;
case TdsEnums.SQLDATETIMEOFFSET:
// We normalize to maximum precision to allow conversion across different precisions.
Debug.Assert(length == 10, "invalid length for datetimeoffset type!");
value.SetToDateTimeOffset(unencryptedBytes, length, TdsEnums.MAX_TIME_SCALE, denormalizedScale);
break;
default:
MetaType metaType = md.baseTI.metaType;
// If we don't have a metatype already, construct one to get the proper type name.
if (metaType == null) {
metaType = MetaType.GetSqlDataType(tdsType, userType:0, length:length);
}
throw SQL.UnsupportedDatatypeEncryption(metaType.TypeName);
}
return true;
}
internal static object GetOutputParameterV200Smi(SmiEventSink_Default sink, SmiTypedGetterSetter getters, int ordinal, SmiMetaData metaData, SmiContext context, SqlBuffer targetBuffer)
{
object result = null;
if (IsDBNull_Unchecked(sink, getters, ordinal))
{
GetNullOutputParameterSmi(metaData, targetBuffer, ref result);
return result;
}
switch (metaData.SqlDbType)
{
case SqlDbType.Date:
targetBuffer.SetToDate(GetDateTime_Unchecked(sink, getters, ordinal));
return result;
case SqlDbType.Time:
targetBuffer.SetToTime(GetTimeSpan_Unchecked(sink, getters, ordinal), metaData.Scale);
return result;
case SqlDbType.DateTime2:
targetBuffer.SetToDateTime2(GetDateTime_Unchecked(sink, getters, ordinal), metaData.Scale);
return result;
case SqlDbType.DateTimeOffset:
targetBuffer.SetToDateTimeOffset(GetDateTimeOffset_Unchecked(sink, getters, ordinal), metaData.Scale);
return result;
case SqlDbType.Variant:
metaData = getters.GetVariantType(sink, ordinal);
sink.ProcessMessagesAndThrow();
GetOutputParameterV200Smi(sink, getters, ordinal, metaData, context, targetBuffer);
return result;
}
return GetOutputParameterV3Smi(sink, getters, ordinal, metaData, context, targetBuffer);
}
private void ReadSqlDateTime(SqlBuffer value, byte tdsType, int length, byte scale, TdsParserStateObject stateObj)
{
stateObj.ReadByteArray(this.datetimeBuffer, 0, length);
switch (tdsType)
{
case 40:
value.SetToDate(this.datetimeBuffer);
return;
case 0x29:
value.SetToTime(this.datetimeBuffer, length, scale);
return;
case 0x2a:
value.SetToDateTime2(this.datetimeBuffer, length, scale);
return;
case 0x2b:
value.SetToDateTimeOffset(this.datetimeBuffer, length, scale);
return;
}
}