////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
//
// Methods
//
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// <include file='doc\OracleBinary.uex' path='docs/doc[@for="OracleBinary.CompareTo"]/*' />
public int CompareTo(
object obj
)
{
if (obj.GetType() == typeof(OracleBinary))
{
OracleBinary b = (OracleBinary)obj;
// If both values are Null, consider them equal.
// Otherwise, Null is less than anything.
if (IsNull)
{
return(b.IsNull ? 0 : -1);
}
if (b.IsNull)
{
return(1);
}
// Neither value is null, do the comparison.
int result = PerformCompareByte(_value, b._value);
return(result);
}
// Wrong type!
throw ADP.Argument();
}
private bool IsEmpty(object value)
{
bool flag = false;
if (value is string)
{
flag = 0 == ((string)value).Length;
}
if (value is OracleString)
{
OracleString str = (OracleString)value;
flag = 0 == str.Length;
}
if (value is char[])
{
flag = 0 == ((char[])value).Length;
}
if (value is byte[])
{
flag = 0 == ((byte[])value).Length;
}
if (value is OracleBinary)
{
OracleBinary binary = (OracleBinary)value;
flag = 0 == binary.Length;
}
return(flag);
}
public static OracleBoolean Equals(OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
{
return(OracleBoolean.Null);
}
return(new OracleBoolean(x.Value == y.Value));
}
public static OracleBoolean NotEquals(OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
{
return(OracleBoolean.Null);
}
//return (x.Value != y.Value);
throw new NotImplementedException();
}
public static OracleBoolean GreaterThanOrEqual(OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
{
return(OracleBoolean.Null);
}
//return (x.Value >= y.Value);
throw new NotImplementedException();
}
/// <include file='doc\OracleBinary.uex' path='docs/doc[@for="OracleBinary.operator+"]/*' />
public static OracleBinary operator+(OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
{
return(Null);
}
byte[] newValue = new byte[x._value.Length + y._value.Length];
x._value.CopyTo(newValue, 0);
y._value.CopyTo(newValue, x.Value.Length);
OracleBinary result = new OracleBinary(newValue);
return(result);
}
public int CompareTo(object obj)
{
if (!(obj.GetType() == typeof(OracleBinary)))
{
throw System.Data.Common.ADP.WrongType(obj.GetType(), typeof(OracleBinary));
}
OracleBinary binary = (OracleBinary)obj;
if (this.IsNull)
{
if (!binary.IsNull)
{
return(-1);
}
return(0);
}
if (binary.IsNull)
{
return(1);
}
return(PerformCompareByte(this._value, binary._value));
}
private int ValueSize(object value)
{
if (value is OracleString)
{
OracleString str = (OracleString)value;
return(str.Length);
}
if (value is string)
{
return(((string)value).Length);
}
if (value is char[])
{
return(((char[])value).Length);
}
if (value is OracleBinary)
{
OracleBinary binary = (OracleBinary)value;
return(binary.Length);
}
return(this.ValueSizeCore(value));
}
public static OracleBoolean LessThanOrEqual(OracleBinary x, OracleBinary y)
{
return (x <= y);
}
public static OracleBoolean LessThan(OracleBinary x, OracleBinary y)
{
return (x < y);
}
public static OracleBoolean GreaterThanOrEqual(OracleBinary x, OracleBinary y)
{
return (x >= y);
}
public static OracleBoolean GreaterThan(OracleBinary x, OracleBinary y)
{
return (x > y);
}
public static OracleBinary Concat(OracleBinary x, OracleBinary y)
{
return (x + y);
}
public static OracleBoolean GreaterThanOrEqual(OracleBinary x, OracleBinary y)
{
return(x >= y);
}
internal object GetOutputValue(
NativeBuffer parameterBuffer,
OracleConnection connection, // connection, so we can create LOB values
bool needCLSType
)
{
object result;
// Returns an object that contains the value of the column in the
// specified row buffer. This method returns Oracle-typed objects.
if (Marshal.ReadInt16((IntPtr)parameterBuffer.Ptr, _indicatorOffset) == (Int16)OCI.INDICATOR.ISNULL)
{
return(DBNull.Value);
}
switch (_bindingMetaType.OciType)
{
case OCI.DATATYPE.FLOAT:
case OCI.DATATYPE.INTEGER:
case OCI.DATATYPE.UNSIGNEDINT:
result = Marshal.PtrToStructure((IntPtr)parameterBuffer.PtrOffset(_valueOffset), _bindingMetaType.BaseType);
return(result);
case OCI.DATATYPE.BFILE:
result = new OracleBFile(_locator);
return(result);
case OCI.DATATYPE.RAW:
case OCI.DATATYPE.LONGRAW:
case OCI.DATATYPE.LONGVARRAW:
result = new OracleBinary(parameterBuffer, _valueOffset, _lengthOffset, _bindingMetaType);
if (needCLSType)
{
object newresult = ((OracleBinary)result).Value;
result = newresult;
}
return(result);
case OCI.DATATYPE.RSET:
result = new OracleDataReader(connection, _descriptor);
return(result);
case OCI.DATATYPE.DATE:
case OCI.DATATYPE.INT_TIMESTAMP:
case OCI.DATATYPE.INT_TIMESTAMP_TZ:
case OCI.DATATYPE.INT_TIMESTAMP_LTZ:
result = new OracleDateTime(parameterBuffer, _valueOffset, _bindingMetaType, connection);
if (needCLSType)
{
object newresult = ((OracleDateTime)result).Value;
result = newresult;
}
return(result);
case OCI.DATATYPE.BLOB:
case OCI.DATATYPE.CLOB:
result = new OracleLob(_locator);
return(result);
case OCI.DATATYPE.INT_INTERVAL_YM:
result = new OracleMonthSpan(parameterBuffer, _valueOffset);
if (needCLSType)
{
object newresult = ((OracleMonthSpan)result).Value;
result = newresult;
}
return(result);
case OCI.DATATYPE.VARNUM:
result = new OracleNumber(parameterBuffer, _valueOffset);
if (needCLSType)
{
object newresult = ((OracleNumber)result).Value;
result = newresult;
}
return(result);
case OCI.DATATYPE.CHAR:
case OCI.DATATYPE.VARCHAR2:
case OCI.DATATYPE.LONG:
case OCI.DATATYPE.LONGVARCHAR:
result = new OracleString(parameterBuffer,
_valueOffset,
_lengthOffset,
_bindingMetaType,
connection,
_bindAsUCS2,
true
);
int size = _parameter.Size;
if (0 != size && size < ((OracleString)result).Length)
{
string truncatedResult = ((OracleString)result).Value.Substring(0, size);
if (needCLSType)
{
result = truncatedResult;
}
else
{
result = new OracleString(truncatedResult);
}
}
else if (needCLSType)
{
object newresult = ((OracleString)result).Value;
result = newresult;
}
return(result);
case OCI.DATATYPE.INT_INTERVAL_DS:
result = new OracleTimeSpan(parameterBuffer, _valueOffset);
if (needCLSType)
{
object newresult = ((OracleTimeSpan)result).Value;
result = newresult;
}
return(result);
}
throw ADP.TypeNotSupported(_bindingMetaType.OciType);
}
internal int PutOracleValue(object value, NativeBuffer buffer, int bufferOffset, MetaType metaType, OracleConnection connection, ref SafeHandle handleToBind)
{
handleToBind = null;
OCI.DATATYPE ociType = metaType.OciType;
OracleParameter parameter = this.Parameter;
switch (ociType)
{
case OCI.DATATYPE.VARCHAR2:
case OCI.DATATYPE.LONG:
case OCI.DATATYPE.LONGVARCHAR:
case OCI.DATATYPE.CHAR:
return(OracleString.MarshalToNative(value, parameter.Offset, parameter.GetActualSize(), buffer, bufferOffset, ociType, this._bindAsUCS2));
case OCI.DATATYPE.INTEGER:
case OCI.DATATYPE.FLOAT:
case OCI.DATATYPE.UNSIGNEDINT:
buffer.StructureToPtr(bufferOffset, value);
return(metaType.BindSize);
case OCI.DATATYPE.VARNUM:
return(OracleNumber.MarshalToNative(value, buffer, bufferOffset, connection));
case OCI.DATATYPE.DATE:
return(OracleDateTime.MarshalDateToNative(value, buffer, bufferOffset, ociType, connection));
case OCI.DATATYPE.RAW:
case OCI.DATATYPE.LONGRAW:
case OCI.DATATYPE.LONGVARRAW:
{
int num;
byte[] buffer2;
if (this._coercedValue is OracleBinary)
{
OracleBinary binary = (OracleBinary)this._coercedValue;
buffer2 = binary.Value;
}
else
{
buffer2 = (byte[])this._coercedValue;
}
int num2 = buffer2.Length - parameter.Offset;
int actualSize = parameter.GetActualSize();
if (actualSize != 0)
{
num2 = Math.Min(num2, actualSize);
}
if (OCI.DATATYPE.LONGVARRAW == ociType)
{
buffer.WriteInt32(bufferOffset, num2);
bufferOffset += 4;
num = num2 + 4;
}
else
{
num = num2;
}
buffer.WriteBytes(bufferOffset, buffer2, parameter.Offset, num2);
return(num);
}
case OCI.DATATYPE.CLOB:
case OCI.DATATYPE.BLOB:
if (!(value is OracleLob))
{
throw System.Data.Common.ADP.BadBindValueType(value.GetType(), metaType.OracleType);
}
handleToBind = ((OracleLob)value).Descriptor;
return(IntPtr.Size);
case OCI.DATATYPE.BFILE:
if (!(value is OracleBFile))
{
throw System.Data.Common.ADP.BadBindValueType(value.GetType(), metaType.OracleType);
}
handleToBind = ((OracleBFile)value).Descriptor;
return(IntPtr.Size);
case OCI.DATATYPE.INT_TIMESTAMP:
case OCI.DATATYPE.INT_TIMESTAMP_LTZ:
if (value is OracleDateTime)
{
OracleDateTime time = (OracleDateTime)value;
if (!time.HasTimeInfo)
{
throw System.Data.Common.ADP.UnsupportedOracleDateTimeBinding(metaType.OracleType);
}
}
this._dateTimeDescriptor = OracleDateTime.CreateDescriptor(ociType, connection, value);
handleToBind = this._dateTimeDescriptor;
return(IntPtr.Size);
case OCI.DATATYPE.INT_TIMESTAMP_TZ:
if (value is OracleDateTime)
{
OracleDateTime time2 = (OracleDateTime)value;
if (!time2.HasTimeZoneInfo)
{
throw System.Data.Common.ADP.UnsupportedOracleDateTimeBinding(OracleType.TimestampWithTZ);
}
}
this._dateTimeDescriptor = OracleDateTime.CreateDescriptor(ociType, connection, value);
handleToBind = this._dateTimeDescriptor;
return(IntPtr.Size);
case OCI.DATATYPE.INT_INTERVAL_YM:
return(OracleMonthSpan.MarshalToNative(value, buffer, bufferOffset));
case OCI.DATATYPE.INT_INTERVAL_DS:
return(OracleTimeSpan.MarshalToNative(value, buffer, bufferOffset));
}
throw System.Data.Common.ADP.TypeNotSupported(ociType);
}
public static OracleBinary Concat(OracleBinary x, OracleBinary y)
{
return(x + y);
}
static OracleBinary()
{
Null = new OracleBinary(true);
}
public static OracleBoolean NotEquals(OracleBinary x, OracleBinary y)
{
return(x != y);
}
public static OracleBoolean LessThanOrEqual(OracleBinary x, OracleBinary y)
{
return(x <= y);
}
public static OracleBoolean LessThan(OracleBinary x, OracleBinary y)
{
return(x < y);
}
public static OracleBoolean NotEquals(OracleBinary x, OracleBinary y)
{
return (x != y);
}
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);
}
static OracleBinary()
{
Null = new OracleBinary(true);
}
public static OracleBoolean Equals (OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
return OracleBoolean.Null;
return new OracleBoolean (x.Value == y.Value);
}
internal int PutOracleValue(
object value,
HandleRef valueBuffer,
MetaType metaType,
OracleConnection connection
)
{
// writes the managed object into the buffer in the appropriate
// native Oracle format.
OCI.DATATYPE ociType = metaType.OciType;
int dataSize;
OracleParameter parameter = Parameter;
switch (ociType)
{
case OCI.DATATYPE.FLOAT:
case OCI.DATATYPE.INTEGER:
case OCI.DATATYPE.UNSIGNEDINT:
Marshal.StructureToPtr(value, (IntPtr)valueBuffer, false);
dataSize = metaType.BindSize;
break;
case OCI.DATATYPE.RAW:
case OCI.DATATYPE.LONGRAW:
case OCI.DATATYPE.LONGVARRAW:
dataSize = OracleBinary.MarshalToNative(value, parameter.Offset, parameter.Size, valueBuffer, ociType);
break;
case OCI.DATATYPE.DATE:
case OCI.DATATYPE.INT_TIMESTAMP:
case OCI.DATATYPE.INT_TIMESTAMP_TZ:
case OCI.DATATYPE.INT_TIMESTAMP_LTZ:
dataSize = OracleDateTime.MarshalToNative(value, valueBuffer, ociType);
break;
case OCI.DATATYPE.BFILE:
// We cannot construct lobs; if you want to bind a lob, you have to have
// a lob.
if (!(value is OracleBFile))
{
throw ADP.BadBindValueType(value.GetType(), metaType.OracleType);
}
Marshal.WriteIntPtr((IntPtr)valueBuffer, (IntPtr)((OracleBFile)value).Descriptor.Handle);
dataSize = IntPtr.Size;
break;
case OCI.DATATYPE.BLOB:
case OCI.DATATYPE.CLOB:
// We cannot construct lobs; if you want to bind a lob, you have to have
// a lob.
if (!(value is OracleLob))
{
throw ADP.BadBindValueType(value.GetType(), metaType.OracleType);
}
// If you don't disable the buffering, you'll cause the PL/SQL code that
// uses this LOB to have problems doing things like DBMS_LOB.GET_LENGTH()
((OracleLob)value).EnsureBuffering(false);
Marshal.WriteIntPtr((IntPtr)valueBuffer, (IntPtr)((OracleLob)value).Descriptor.Handle);
dataSize = IntPtr.Size;
break;
case OCI.DATATYPE.INT_INTERVAL_YM:
dataSize = OracleMonthSpan.MarshalToNative(value, valueBuffer);
break;
case OCI.DATATYPE.VARNUM:
dataSize = OracleNumber.MarshalToNative(value, valueBuffer, connection);
break;
case OCI.DATATYPE.CHAR:
case OCI.DATATYPE.VARCHAR2:
case OCI.DATATYPE.LONG:
case OCI.DATATYPE.LONGVARCHAR:
dataSize = OracleString.MarshalToNative(value, parameter.Offset, parameter.Size, valueBuffer, ociType, _bindAsUCS2);
break;
case OCI.DATATYPE.INT_INTERVAL_DS:
dataSize = OracleTimeSpan.MarshalToNative(value, valueBuffer);
break;
default:
throw ADP.TypeNotSupported(ociType);
}
Debug.Assert(dataSize <= _bufferLengthInBytes, String.Format("Internal Error: Exceeded Internal Buffer. DataSize={0} BufferLength={1}", dataSize, _bufferLengthInBytes));
return(dataSize);
}
public static OracleBoolean GreaterThan(OracleBinary x, OracleBinary y)
{
return(x > y);
}
public static OracleBoolean GreaterThan (OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
return OracleBoolean.Null;
//return (x.Value > y.Value);
throw new NotImplementedException ();
}
public static OracleBoolean NotEquals (OracleBinary x, OracleBinary y)
{
if (x.IsNull || y.IsNull)
return OracleBoolean.Null;
//return (x.Value != y.Value);
throw new NotImplementedException ();
}
public static OracleBinary Concat(OracleBinary x, OracleBinary y)
{
throw new NotImplementedException();
}
public static OracleBinary Concat (OracleBinary x, OracleBinary y)
{
throw new NotImplementedException ();
}
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);
}
internal long GetBytes(NativeBuffer_RowBuffer buffer, long fieldOffset, byte[] destinationBuffer, int destinationOffset, int length)
{
int num;
if (length < 0)
{
throw System.Data.Common.ADP.InvalidDataLength((long)length);
}
if ((destinationOffset < 0) || ((destinationBuffer != null) && (destinationOffset >= destinationBuffer.Length)))
{
throw System.Data.Common.ADP.InvalidDestinationBufferIndex(destinationBuffer.Length, destinationOffset, "bufferoffset");
}
if ((0L > fieldOffset) || (0xffffffffL < fieldOffset))
{
throw System.Data.Common.ADP.InvalidSourceOffset("fieldOffset", 0L, 0xffffffffL);
}
if (this.IsLob)
{
System.Data.OracleClient.OracleType oracleType = this._metaType.OracleType;
if ((System.Data.OracleClient.OracleType.Blob != oracleType) && (System.Data.OracleClient.OracleType.BFile != oracleType))
{
throw System.Data.Common.ADP.InvalidCast();
}
if (this.IsDBNull(buffer))
{
throw System.Data.Common.ADP.DataReaderNoData();
}
using (OracleLob lob = new OracleLob(this._lobLocator))
{
uint num3 = (uint)lob.Length;
uint num2 = (uint)fieldOffset;
if (num2 > num3)
{
throw System.Data.Common.ADP.InvalidSourceBufferIndex((int)num3, (long)num2, "fieldOffset");
}
num = (int)(num3 - num2);
if (destinationBuffer != null)
{
num = Math.Min(num, length);
if (0 < num)
{
lob.Seek((long)num2, SeekOrigin.Begin);
lob.Read(destinationBuffer, destinationOffset, num);
}
}
goto Label_0155;
}
}
if ((System.Data.OracleClient.OracleType.Raw != this.OracleType) && (System.Data.OracleClient.OracleType.LongRaw != this.OracleType))
{
throw System.Data.Common.ADP.InvalidCast();
}
if (this.IsDBNull(buffer))
{
throw System.Data.Common.ADP.DataReaderNoData();
}
this.FixupLongValueLength(buffer);
int num5 = OracleBinary.GetLength(buffer, this._lengthOffset, this._metaType);
int sourceOffset = (int)fieldOffset;
num = num5 - sourceOffset;
if (destinationBuffer != null)
{
num = Math.Min(num, length);
if (0 < num)
{
OracleBinary.GetBytes(buffer, this._valueOffset, this._metaType, sourceOffset, destinationBuffer, destinationOffset, num);
}
}
Label_0155:
return((long)Math.Max(0, num));
}