internal static int GetLength(NativeBuffer buffer, int lengthOffset, MetaType metaType)
{
if (metaType.IsLong)
{
return(buffer.ReadInt32(lengthOffset));
}
return(buffer.ReadInt16(lengthOffset));
}
internal static byte[] GetBytesFromBuffer(NativeBuffer buffer, int valueOffset, int lengthOffset, MetaType metaType, OracleConnection connection)
{
uint num2;
OCI.DATATYPE ociType = metaType.OciType;
short length = buffer.ReadInt16(lengthOffset);
OCI.DATATYPE datatype = ociType;
if (datatype == OCI.DATATYPE.DATE)
{
num2 = 7;
}
else if (datatype == OCI.DATATYPE.INT_TIMESTAMP)
{
num2 = 11;
}
else if (datatype == OCI.DATATYPE.INT_TIMESTAMP_LTZ)
{
num2 = 13;
}
else
{
num2 = 13;
}
byte[] destination = new byte[num2];
buffer.ReadBytes(valueOffset, destination, 0, length);
if (OCI.DATATYPE.INT_TIMESTAMP_LTZ == ociType)
{
TimeSpan serverTimeZoneAdjustmentToUTC = connection.ServerTimeZoneAdjustmentToUTC;
destination[11] = (byte)(serverTimeZoneAdjustmentToUTC.Hours + 20);
destination[12] = (byte)(serverTimeZoneAdjustmentToUTC.Minutes + 60);
return(destination);
}
if ((OCI.DATATYPE.INT_TIMESTAMP_TZ == ociType) && (0x80 < destination[11]))
{
sbyte num3;
sbyte num4;
OciIntervalDescriptor reftz = new OciIntervalDescriptor(connection.EnvironmentHandle);
OciDateTimeDescriptor datetime = new OciDateTimeDescriptor(connection.EnvironmentHandle, OCI.HTYPE.OCI_DTYPE_TIMESTAMP_TZ);
int rc = System.Data.Common.UnsafeNativeMethods.OCIDateTimeFromArray(connection.EnvironmentHandle, connection.ErrorHandle, destination, num2, 0xbc, datetime, reftz, 0);
if (rc != 0)
{
connection.CheckError(connection.ErrorHandle, rc);
}
rc = System.Data.Common.UnsafeNativeMethods.OCIDateTimeGetTimeZoneOffset(connection.EnvironmentHandle, connection.ErrorHandle, datetime, out num4, out num3);
if (rc != 0)
{
connection.CheckError(connection.ErrorHandle, rc);
}
destination[11] = (byte)(num4 + 20);
destination[12] = (byte)(num3 + 60);
}
return(destination);
}
internal static int GetLength(NativeBuffer buffer, int lengthOffset, MetaType metaType)
{
int num;
if (metaType.IsLong)
{
num = buffer.ReadInt32(lengthOffset);
}
else
{
num = buffer.ReadInt16(lengthOffset);
}
GC.KeepAlive(buffer);
return(num);
}
internal static OracleString GetPersistedRowid(OracleConnection connection, OciRowidDescriptor rowidHandle)
{
OracleString @null = OracleString.Null;
if (rowidHandle != null)
{
OciErrorHandle errorHandle = connection.ErrorHandle;
NativeBuffer scratchBuffer = connection.GetScratchBuffer(0xf82);
bool success = false;
bool flag = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
int num;
scratchBuffer.DangerousAddRef(ref success);
if (OCI.ClientVersionAtLeastOracle9i)
{
int length = scratchBuffer.Length;
num = TracedNativeMethods.OCIRowidToChar(rowidHandle, scratchBuffer, ref length, errorHandle);
if (num != 0)
{
connection.CheckError(errorHandle, num);
}
return(new OracleString(scratchBuffer.PtrToStringAnsi(0, length)));
}
rowidHandle.DangerousAddRef(ref flag);
OciServiceContextHandle serviceContextHandle = connection.ServiceContextHandle;
OciStatementHandle stmtp = new OciStatementHandle(serviceContextHandle);
string stmt = "begin :rowid := :rdesc; end;";
int offset = 0;
int num6 = 4;
int num5 = 8;
int num3 = 12;
int num2 = 0x10;
int num4 = 20;
try
{
IntPtr ptr;
IntPtr ptr2;
num = TracedNativeMethods.OCIStmtPrepare(stmtp, errorHandle, stmt, OCI.SYNTAX.OCI_NTV_SYNTAX, OCI.MODE.OCI_DEFAULT, connection);
if (num != 0)
{
connection.CheckError(errorHandle, num);
}
scratchBuffer.WriteIntPtr(num5, rowidHandle.DangerousGetHandle());
scratchBuffer.WriteInt32(offset, 0);
scratchBuffer.WriteInt32(num6, 4);
scratchBuffer.WriteInt32(num3, 0);
scratchBuffer.WriteInt32(num2, 0xf6e);
num = TracedNativeMethods.OCIBindByName(stmtp, out ptr2, errorHandle, "rowid", 5, scratchBuffer.DangerousGetDataPtr(num4), 0xf6e, OCI.DATATYPE.VARCHAR2, scratchBuffer.DangerousGetDataPtr(num3), scratchBuffer.DangerousGetDataPtr(num2), OCI.MODE.OCI_DEFAULT);
if (num != 0)
{
connection.CheckError(errorHandle, num);
}
num = TracedNativeMethods.OCIBindByName(stmtp, out ptr, errorHandle, "rdesc", 5, scratchBuffer.DangerousGetDataPtr(num5), 4, OCI.DATATYPE.ROWID_DESC, scratchBuffer.DangerousGetDataPtr(offset), scratchBuffer.DangerousGetDataPtr(num6), OCI.MODE.OCI_DEFAULT);
if (num != 0)
{
connection.CheckError(errorHandle, num);
}
num = TracedNativeMethods.OCIStmtExecute(serviceContextHandle, stmtp, errorHandle, 1, OCI.MODE.OCI_DEFAULT);
if (num != 0)
{
connection.CheckError(errorHandle, num);
}
if (scratchBuffer.ReadInt16(num3) == -1)
{
return(@null);
}
@null = new OracleString(scratchBuffer, num4, num2, MetaType.GetMetaTypeForType(OracleType.RowId), connection, false, true);
GC.KeepAlive(rowidHandle);
}
finally
{
OciHandle.SafeDispose(ref stmtp);
}
}
finally
{
if (flag)
{
rowidHandle.DangerousRelease();
}
if (success)
{
scratchBuffer.DangerousRelease();
}
}
}
return(@null);
}
internal object GetOutputValue(NativeBuffer parameterBuffer, OracleConnection connection, bool needCLSType)
{
object obj2;
if (parameterBuffer.ReadInt16(this._indicatorOffset) == -1)
{
return(DBNull.Value);
}
switch (this._bindingMetaType.OciType)
{
case OCI.DATATYPE.VARCHAR2:
case OCI.DATATYPE.LONG:
case OCI.DATATYPE.LONGVARCHAR:
case OCI.DATATYPE.CHAR:
{
obj2 = new OracleString(parameterBuffer, this._valueOffset, this._lengthOffset, this._bindingMetaType, connection, this._bindAsUCS2, true);
int size = this._parameter.Size;
if (size != 0)
{
OracleString str4 = (OracleString)obj2;
if (size < str4.Length)
{
OracleString str3 = (OracleString)obj2;
string s = str3.Value.Substring(0, size);
if (needCLSType)
{
return(s);
}
return(new OracleString(s));
}
}
if (needCLSType)
{
OracleString str2 = (OracleString)obj2;
obj2 = str2.Value;
}
return(obj2);
}
case OCI.DATATYPE.INTEGER:
case OCI.DATATYPE.FLOAT:
case OCI.DATATYPE.UNSIGNEDINT:
return(parameterBuffer.PtrToStructure(this._valueOffset, this._bindingMetaType.BaseType));
case OCI.DATATYPE.VARNUM:
obj2 = new OracleNumber(parameterBuffer, this._valueOffset);
if (needCLSType)
{
OracleNumber number = (OracleNumber)obj2;
obj2 = number.Value;
}
return(obj2);
case OCI.DATATYPE.DATE:
obj2 = new OracleDateTime(parameterBuffer, this._valueOffset, this._lengthOffset, this._bindingMetaType, connection);
if (needCLSType)
{
OracleDateTime time2 = (OracleDateTime)obj2;
obj2 = time2.Value;
}
return(obj2);
case OCI.DATATYPE.RAW:
case OCI.DATATYPE.LONGRAW:
case OCI.DATATYPE.LONGVARRAW:
obj2 = new OracleBinary(parameterBuffer, this._valueOffset, this._lengthOffset, this._bindingMetaType);
if (needCLSType)
{
OracleBinary binary = (OracleBinary)obj2;
obj2 = binary.Value;
}
return(obj2);
case OCI.DATATYPE.CLOB:
case OCI.DATATYPE.BLOB:
return(new OracleLob(this._locator));
case OCI.DATATYPE.BFILE:
return(new OracleBFile(this._locator));
case OCI.DATATYPE.RSET:
return(new OracleDataReader(connection, this._descriptor));
case OCI.DATATYPE.INT_TIMESTAMP:
case OCI.DATATYPE.INT_TIMESTAMP_TZ:
case OCI.DATATYPE.INT_TIMESTAMP_LTZ:
obj2 = new OracleDateTime(this._dateTimeDescriptor, this._bindingMetaType, connection);
if (needCLSType)
{
OracleDateTime time = (OracleDateTime)obj2;
obj2 = time.Value;
}
return(obj2);
case OCI.DATATYPE.INT_INTERVAL_YM:
obj2 = new OracleMonthSpan(parameterBuffer, this._valueOffset);
if (needCLSType)
{
OracleMonthSpan span2 = (OracleMonthSpan)obj2;
obj2 = span2.Value;
}
return(obj2);
case OCI.DATATYPE.INT_INTERVAL_DS:
obj2 = new OracleTimeSpan(parameterBuffer, this._valueOffset);
if (needCLSType)
{
OracleTimeSpan span = (OracleTimeSpan)obj2;
obj2 = span.Value;
}
return(obj2);
}
throw System.Data.Common.ADP.TypeNotSupported(this._bindingMetaType.OciType);
}
