internal void Bind(
OciHandle statementHandle,
NativeBuffer buffer,
OciHandle errorHandle,
int rowBufferLength
)
{
// Binds the buffer for the column to the statement handle specified.
OciHandle defineHandle = null;
IntPtr h;
OCI.MODE mode = OCI.MODE.OCI_DEFAULT;
int bindSize;
OCI.DATATYPE ociType = _metaType.OciType;
_rowBuffer = buffer;
if (_metaType.IsLong)
{
mode = OCI.MODE.OCI_DYNAMIC_FETCH;
bindSize = Int32.MaxValue;
}
else
{
bindSize = _size;
}
HandleRef indicatorLocation = ADP.NullHandleRef;
HandleRef lengthLocation = ADP.NullHandleRef;
HandleRef valueLocation = _rowBuffer.PtrOffset(_valueOffset);
if (-1 != _indicatorOffset)
{
indicatorLocation = _rowBuffer.PtrOffset(_indicatorOffset);
}
if (-1 != _lengthOffset && !_metaType.IsLong)
{
lengthLocation = _rowBuffer.PtrOffset(_lengthOffset);
}
try
{
try
{
int rc = TracedNativeMethods.OCIDefineByPos(
statementHandle, // hndlp
out h, // defnpp
errorHandle, // errhp
_ordinal + 1, // position
valueLocation, // valuep
bindSize, // value_sz
ociType, // htype
indicatorLocation, // indp,
lengthLocation, // rlenp,
ADP.NullHandleRef, // rcodep,
mode // mode
);
if (rc != 0)
{
_connection.CheckError(errorHandle, rc);
}
defineHandle = new OciDefineHandle(statementHandle, h);
if (0 != rowBufferLength)
{
int valOffset = rowBufferLength;
int indOffset = (-1 != _indicatorOffset) ? rowBufferLength : 0;
int lenOffset = (-1 != _lengthOffset && !_metaType.IsLong) ? rowBufferLength : 0;
rc = TracedNativeMethods.OCIDefineArrayOfStruct(
defineHandle,
errorHandle,
valOffset,
indOffset,
lenOffset,
0 // never use rcodep above...
);
if (rc != 0)
{
_connection.CheckError(errorHandle, rc);
}
}
if (!_connection.UnicodeEnabled)
{
if (_metaType.UsesNationalCharacterSet)
{
Debug.Assert(!_metaType.IsLong, "LONG data may never be bound as NCHAR");
// NOTE: the order is important here; setting charsetForm will
// reset charsetId (I found this out the hard way...)
defineHandle.SetAttribute(OCI.ATTR.OCI_ATTR_CHARSET_FORM, (int)OCI.CHARSETFORM.SQLCS_NCHAR, errorHandle);
}
if (_bindAsUCS2)
{
// NOTE: the order is important here; setting charsetForm will
// reset charsetId (I found this out the hard way...)
defineHandle.SetAttribute(OCI.ATTR.OCI_ATTR_CHARSET_ID, OCI.OCI_UCS2ID, errorHandle);
}
}
if (_metaType.IsLong)
{
// Initialize the longBuffer in the rowBuffer to null
Marshal.WriteIntPtr((IntPtr)_rowBuffer.PtrOffset(_valueOffset), IntPtr.Zero);
if (null != _longBuffer)
{
_longBuffer.Dispose();
_longBuffer = null;
}
// We require MTxOCI8 to be in the path somewhere for us to handle LONG data
if (!OCI.IsNewMtxOci8Installed)
#if EVERETT
{ throw ADP.MustInstallNewMtxOciLONG(); }
#else //!EVERETT {
throw ADP.MustInstallNewMtxOci();
}
#endif //!EVERETT
_callback = new OCI.Callback.OCICallbackDefine(_callback_GetColumnPiecewise);
rc = TracedNativeMethods.MTxOciDefineDynamic(
defineHandle, // defnp
errorHandle, // errhp
ADP.NullHandleRef, // dvoid *octxp,
_callback // OCICallbackDefine ocbfp
);
if (rc != 0)
{
_connection.CheckError(errorHandle, rc);
}
}
}
finally
{
// We don't need this any longer, get rid of it.
OciHandle.SafeDispose(ref defineHandle);
}
}
