void DefineNumber(int position, OracleConnection connection)
{
fieldType = typeof(System.Decimal);
value = OciCalls.AllocateClear(definedSize);
ociType = OciDataType.Char;
int status = 0;
status = OciCalls.OCIDefineByPos(Parent,
out handle,
ErrorHandle,
position + 1,
value,
definedSize,
ociType,
indicator,
rlenp,
IntPtr.Zero,
0);
if (status != 0)
{
OciErrorInfo info = ErrorHandle.HandleError();
throw new OracleException(info.ErrorCode, info.ErrorMessage);
}
}
void DefineLongVarRaw(int position, OracleConnection connection)
{
ociType = OciDataType.LongVarRaw;
fieldType = typeof(byte[]);
// TODO: get via piece-wise - a chunk at a time
definedSize = LongVarRawMaxValue;
value = OciCalls.AllocateClear(definedSize);
int status = 0;
status = OciCalls.OCIDefineByPos(Parent,
out handle,
ErrorHandle,
position + 1,
value,
definedSize,
ociType,
indicator,
rlenp,
IntPtr.Zero, 0);
if (status != 0)
{
OciErrorInfo info = ErrorHandle.HandleError();
throw new OracleException(info.ErrorCode, info.ErrorMessage);
}
}
internal OciRowIdDescriptor GetAttributeRowIdDescriptor(OciErrorHandle errorHandle, OciHandle env)
{
OciRowIdDescriptor descriptor = null;
IntPtr outputPtr = IntPtr.Zero;
int outSize = 16;
int status = 0;
OciAttributeType attrType = OciAttributeType.RowId;
outputPtr = OciCalls.AllocateClear(outSize);
uint siz = (uint)outSize;
status = OCIAttrGetRowIdDesc(Handle,
HandleType,
outputPtr,
ref siz,
attrType,
errorHandle);
if (status != 0)
{
OciErrorInfo info = errorHandle.HandleError();
throw new OracleException(info.ErrorCode, info.ErrorMessage);
}
if (outputPtr != IntPtr.Zero && siz > 0)
{
descriptor = (OciRowIdDescriptor)env.Allocate(OciHandleType.RowId);
descriptor.SetHandle(outputPtr);
}
return(descriptor);
}
void DefineChar(int position, OracleConnection connection)
{
fieldType = typeof(System.String);
int maxByteCount = Encoding.UTF8.GetMaxByteCount(definedSize);
value = OciCalls.AllocateClear(maxByteCount);
ociType = OciDataType.Char;
int status = 0;
status = OciCalls.OCIDefineByPos(Parent,
out handle,
ErrorHandle,
position + 1,
value,
maxByteCount,
ociType,
indicator,
rlenp,
IntPtr.Zero,
0);
OciErrorHandle.ThrowExceptionIfError(ErrorHandle, status);
}
//[MonoTODO ("Only will work with 9i and above. Get it to work for 8i as well.")]
internal string GetRowIdToString(OciErrorHandle errorHandle)
{
string output = String.Empty;
int len = 18; // Universal ROWID has a length of 18
int maxByteCount = Encoding.UTF8.GetMaxByteCount(len);
IntPtr outputPtr = OciCalls.AllocateClear(maxByteCount);
int status = 0;
ushort u = (ushort)maxByteCount;
status = OCIRowidToChar(Handle,
outputPtr,
ref u,
errorHandle);
if (status != 0)
{
OciErrorInfo info = errorHandle.HandleError();
throw new OracleException(info.ErrorCode, info.ErrorMessage);
}
if (outputPtr != IntPtr.Zero && maxByteCount > 0)
{
object str = Marshal.PtrToStringAnsi(outputPtr, len);
if (str != null)
{
output = String.Copy((string)str);
}
}
return(output);
}
void DefineRaw(int position, OracleConnection connection)
{
ociType = OciDataType.Raw;
fieldType = typeof(byte[]);
value = OciCalls.AllocateClear(definedSize);
int status = 0;
status = OciCalls.OCIDefineByPos(Parent,
out handle,
ErrorHandle,
position + 1,
value,
definedSize * 2,
ociType,
ref indicator,
ref rlenp,
IntPtr.Zero, 0);
if (status != 0)
{
OciErrorInfo info = ErrorHandle.HandleError();
throw new OracleException(info.ErrorCode, info.ErrorMessage);
}
}
public static OciErrorInfo HandleError(OciHandle hand)
{
OciErrorInfo info;
info.ErrorCode = 0;
info.ErrorMessage = String.Empty;
ulong errbufSize = 4096;
UIntPtr errbufSizep = new UIntPtr(errbufSize);
IntPtr errbuf = OciCalls.AllocateClear((int)errbufSize);
OciCalls.OCIErrorGet(hand,
1,
IntPtr.Zero,
out info.ErrorCode,
errbuf,
(uint)errbufSize,
OciHandleType.Error);
byte[] bytea = new byte[errbufSize];
Marshal.Copy(errbuf, bytea, 0, (int)errbufSize);
errbufSize = 0;
OciHandle h = hand.Parent;
if (h == null)
{
h = hand;
}
if (h == null)
{
throw new Exception("Internal driver error: handle is null.");
}
// first call to OCICharSetToUnicode gets the size
OciCalls.OCICharSetToUnicode(h, null, bytea, ref errbufSizep);
errbufSize = errbufSizep.ToUInt64();
StringBuilder str = new StringBuilder((int)errbufSize);
// second call to OCICharSetToUnicode gets the string
OciCalls.OCICharSetToUnicode(h, str, bytea, ref errbufSizep);
string errmsg = String.Empty;
if (errbufSize > 0)
{
errmsg = str.ToString();
}
else
{
errmsg = "Internal driver error. Could not retrieve error message.";
}
info.ErrorMessage = String.Copy(errmsg);
Marshal.FreeHGlobal(errbuf);
return(info);
}
public static OciErrorInfo HandleError(OciHandle hwnd, int status)
{
OciErrorInfo info;
info.ErrorCode = status;
info.ErrorMessage = OciGlue.ReturnCodeToString(status);
if (status == OciGlue.OCI_ERROR || status == OciGlue.OCI_SUCCESS_WITH_INFO)
{
OciHandle h = hwnd;
if (h == null)
{
throw new Exception("Internal driver error: handle is null.");
}
ulong errbufSize = 4096;
UIntPtr errbufSizep = new UIntPtr(errbufSize);
IntPtr errbuf = OciCalls.AllocateClear((int)errbufSize);
OciCalls.OCIErrorGet(hwnd,
1,
IntPtr.Zero,
out info.ErrorCode,
errbuf,
(uint)errbufSize,
OciHandleType.Error);
byte[] bytea = new byte[errbufSize];
Marshal.Copy(errbuf, bytea, 0, (int)errbufSize);
errbufSize = 0;
// first call to OCICharSetToUnicode gets the size
OciCalls.OCICharSetToUnicode(h, null, bytea, ref errbufSizep);
errbufSize = errbufSizep.ToUInt64();
StringBuilder str = new StringBuilder((int)errbufSize);
// second call to OCICharSetToUnicode gets the string
OciCalls.OCICharSetToUnicode(h, str, bytea, ref errbufSizep);
string errmsg = String.Empty;
if (errbufSize > 0)
{
errmsg = str.ToString();
info.ErrorMessage = String.Copy(errmsg);
}
Marshal.FreeHGlobal(errbuf);
}
return(info);
}
internal void DefineByPosition(int position, OracleConnection connection)
{
OciParameterDescriptor parameter = ((OciStatementHandle)Parent).GetParameter(position);
name = parameter.GetName();
definedType = parameter.GetDataType();
definedSize = parameter.GetDataSize();
//precision = parameter.GetPrecision ();
scale = parameter.GetScale();
rlenp = OciCalls.AllocateClear(sizeof(short));
indicator = OciCalls.AllocateClear(sizeof(short));
Define(position, connection);
parameter.Dispose();
}
void DefineLongVarChar(int position, OracleConnection connection)
{
fieldType = typeof(System.String);
// LONG VARCHAR max length is 2 to the 31 power - 5
// the first 4 bytes of a LONG VARCHAR value contains the length
// Int32.MaxValue - 5 causes out of memory in mono on win32
// because I do not have 2GB of memory available
// so Int16.MaxValue - 5 is used instead.
// LAMESPEC for Oracle OCI - you can not get the length of the LONG VARCHAR value
// until after you get the value. This could be why Oracle deprecated LONG VARCHAR.
// If you specify a definedSize less then the length of the column value,
// then you will get an OCI_ERROR ORA-01406: fetched column value was truncated
// TODO: get via piece-wise - a chunk at a time
definedSize = LongVarCharMaxValue;
value = OciCalls.AllocateClear(definedSize);
ociType = OciDataType.LongVarChar;
int status = 0;
status = OciCalls.OCIDefineByPos(Parent,
out handle,
ErrorHandle,
position + 1,
value,
definedSize,
ociType,
indicator,
rlenp,
IntPtr.Zero, 0);
Size = (short)definedSize;
if (status != 0)
{
OciErrorInfo info = ErrorHandle.HandleError();
throw new OracleException(info.ErrorCode, info.ErrorMessage);
}
}