// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause

/*
 * Microsoft's own version of sqltypes.h relies on some typedefs and
 * macros in windows.h.  This next fragment tells VTK to include the
 * whole thing without any of its usual #defines to keep the size
 * manageable.  No WIN32_LEAN_AND_MEAN for us!
 */
#if defined(_WIN32) && !defined(__CYGWIN__)
#define VTK_WINDOWS_FULL
#include <vtkWindows.h>
#endif

#include "vtkODBCDatabase.h"
#include "vtkODBCInternals.h"
#include "vtkODBCQuery.h"

#include "vtkBitArray.h"
#include "vtkObjectFactory.h"
#include "vtkStringArray.h"
#include "vtkVariant.h"
#include "vtkVariantArray.h"

#include <cassert>

#include <sstream>
#include <vector>

#include <sql.h>
#include <sqlext.h>

//------------------------------------------------------------------------------

VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkODBCQuery);

static std::string GetErrorMessage(SQLSMALLINT handleType, SQLHANDLE handle, int* code = nullptr);

/*
 * Bound Parameters and ODBC
 *
 * ODBC handles bound parameters by requiring that the user pass in
 * buffers containing data for each parameter to be bound.  These are
 * bound to the statement using SQLBindParam.  The statement must have
 * been prepared using SQLPrepare.  Those buffers need to be freed
 * when they're no longer needed.
 *
 * I'm going to handle this by using my own class
 * (vtkODBCBoundParameter) to hold all the information the user passes
 * in.  This is the same sort of trick I use for the MySQL bound
 * parameter support.  At execution time I'll take the parameters and
 * attach them all to the statement.  The vtkODBCBoundParameter
 * instances will each own the buffesr for their data.
 *
 * This is slightly inefficient in that it will generate
 * a few tiny little new[] requests.  If this ever becomes a problem,
 * we can allocate a fixed-size buffer (8 or 16 bytes) inside
 * vtkODBCBoundParameter and use that for the data storage by
 * default.  That will still require special-case handling for blobs
 * and strings.
 *
 * The vtkODBCQueryInternals class will handle the bookkeeping for
 * which parameters are and aren't bound at any given time.
 */

//------------------------------------------------------------------------------

class vtkODBCBoundParameter
{
public:
  vtkODBCBoundParameter()
    : Data(nullptr)
    , DataLength(0)
    , BufferSize(0)
    , DataTypeC(0)
    , DataTypeSQL(0)
  {
  }

  ~vtkODBCBoundParameter() { delete[] this->Data; }

  void SetData(const char* data, unsigned long size)
  {
    delete[] this->Data;
    this->BufferSize = size;
    this->DataLength = size;
    this->Data = new char[size];
    memcpy(this->Data, data, size);
  }

  char* Data; // Buffer holding actual data
  unsigned long DataLength;
  SQLLEN BufferSize; // will be at least as large as DataLength
  SQLSMALLINT DataTypeC;
  SQLSMALLINT DataTypeSQL;
};

//------------------------------------------------------------------------------

class vtkODBCQueryInternals
{
public:
  vtkODBCQueryInternals()
  {
    this->Statement = nullptr;
    this->CurrentRow = vtkVariantArray::New();
    this->ColumnNames = vtkStringArray::New();
    this->ColumnIsSigned = vtkBitArray::New();
    this->ColumnTypes = nullptr;
    this->NullPermitted = vtkBitArray::New();
  }

  ~vtkODBCQueryInternals()
  {
    this->FreeUserParameterList();
    if (this->Statement != nullptr)
    {
      SQLFreeHandle(SQL_HANDLE_STMT, this->Statement);
    }
    this->CurrentRow->Delete();
    this->ColumnNames->Delete();
    this->ColumnIsSigned->Delete();
    this->NullPermitted->Delete();
    delete[] this->ColumnTypes;
  }

  void FreeStatement();
  void FreeUserParameterList();
  void ClearBoundParameters();
  bool PrepareQuery(const char* queryString, SQLHANDLE connection, std::string& error_message);
  bool SetBoundParameter(int index, vtkODBCBoundParameter* param);
  bool BindParametersToStatement();

  SQLHANDLE Statement;
  std::string Name;

  vtkVariantArray* CurrentRow;
  vtkStringArray* ColumnNames;
  vtkBitArray* ColumnIsSigned;
  vtkBitArray* NullPermitted;
  SQLSMALLINT* ColumnTypes;

  typedef std::vector<vtkODBCBoundParameter*> ParameterList;
  ParameterList UserParameterList;
};

//------------------------------------------------------------------------------

void vtkODBCQueryInternals::FreeStatement()
{
  if (this->Statement)
  {
    SQLRETURN status;
    status = SQLCloseCursor(this->Statement);
    if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
    {
      std::ostringstream errorBuf;
      errorBuf << "vtkODBCQuery: Unable to close SQL cursor.  Error: "
               << GetErrorMessage(SQL_HANDLE_STMT, this->Statement);
      cerr << errorBuf.str() << "\n";
    }

    status = SQLFreeHandle(SQL_HANDLE_STMT, this->Statement);
    if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
    {
      std::ostringstream errorBuf;
      errorBuf << "Unable to free statement handle.  Memory leak will occur. Error: "
               << GetErrorMessage(SQL_HANDLE_STMT, this->Statement);
      cerr << errorBuf.str() << "\n";
    }
    this->Statement = nullptr;
  }
}

//------------------------------------------------------------------------------

template <typename T>
SQLSMALLINT vtkODBCTypeNameC();

#define VTK_ODBC_C_TYPENAME_MACRO(type, return_type)                                               \
  template <>                                                                                      \
  SQLSMALLINT vtkODBCTypeNameC<type>()                                                             \
  {                                                                                                \
    return return_type;                                                                            \
  }

VTK_ODBC_C_TYPENAME_MACRO(signed char, SQL_C_STINYINT);
VTK_ODBC_C_TYPENAME_MACRO(unsigned char, SQL_C_UTINYINT);
VTK_ODBC_C_TYPENAME_MACRO(signed short, SQL_C_SSHORT);
VTK_ODBC_C_TYPENAME_MACRO(unsigned short, SQL_C_USHORT);
VTK_ODBC_C_TYPENAME_MACRO(signed int, SQL_C_SLONG);
VTK_ODBC_C_TYPENAME_MACRO(unsigned int, SQL_C_ULONG);
VTK_ODBC_C_TYPENAME_MACRO(signed long, SQL_C_SLONG);
VTK_ODBC_C_TYPENAME_MACRO(unsigned long, SQL_C_ULONG);
VTK_ODBC_C_TYPENAME_MACRO(float, SQL_C_FLOAT);
VTK_ODBC_C_TYPENAME_MACRO(double, SQL_C_DOUBLE);
VTK_ODBC_C_TYPENAME_MACRO(long long, SQL_C_SBIGINT);
VTK_ODBC_C_TYPENAME_MACRO(unsigned long long, SQL_C_UBIGINT);
VTK_ODBC_C_TYPENAME_MACRO(const char*, SQL_C_CHAR);
VTK_ODBC_C_TYPENAME_MACRO(char*, SQL_C_CHAR);
VTK_ODBC_C_TYPENAME_MACRO(unsigned char*, SQL_C_CHAR);
VTK_ODBC_C_TYPENAME_MACRO(void*, SQL_C_BINARY);

template <typename T>
SQLSMALLINT vtkODBCTypeNameSQL();

#define VTK_ODBC_SQL_TYPENAME_MACRO(type, return_type)                                             \
  template <>                                                                                      \
  SQLSMALLINT vtkODBCTypeNameSQL<type>()                                                           \
  {                                                                                                \
    return return_type;                                                                            \
  }

VTK_ODBC_SQL_TYPENAME_MACRO(signed char, SQL_TINYINT);
VTK_ODBC_SQL_TYPENAME_MACRO(unsigned char, SQL_TINYINT);
VTK_ODBC_SQL_TYPENAME_MACRO(signed short, SQL_SMALLINT);
VTK_ODBC_SQL_TYPENAME_MACRO(unsigned short, SQL_SMALLINT);
VTK_ODBC_SQL_TYPENAME_MACRO(signed int, SQL_INTEGER);
VTK_ODBC_SQL_TYPENAME_MACRO(unsigned int, SQL_INTEGER);
VTK_ODBC_SQL_TYPENAME_MACRO(signed long, SQL_INTEGER);
VTK_ODBC_SQL_TYPENAME_MACRO(unsigned long, SQL_INTEGER);
VTK_ODBC_SQL_TYPENAME_MACRO(float, SQL_REAL);
VTK_ODBC_SQL_TYPENAME_MACRO(double, SQL_DOUBLE);
VTK_ODBC_SQL_TYPENAME_MACRO(long long, SQL_BIGINT);
VTK_ODBC_SQL_TYPENAME_MACRO(unsigned long long, SQL_BIGINT);
VTK_ODBC_SQL_TYPENAME_MACRO(const char*, SQL_VARCHAR);
VTK_ODBC_SQL_TYPENAME_MACRO(char*, SQL_VARCHAR);
VTK_ODBC_SQL_TYPENAME_MACRO(unsigned char*, SQL_VARCHAR);
VTK_ODBC_SQL_TYPENAME_MACRO(void*, SQL_VARBINARY);

//------------------------------------------------------------------------------

// Description:
// This function will build and populate a vtkODBCBoundParameter
// struct.  The default implementation works for POD data types (char,
// int, long, etc).  I'll need to special-case strings and blobs.

template <typename T>
vtkODBCBoundParameter* vtkBuildODBCBoundParameter(T const& data_value)
{
  vtkODBCBoundParameter* param = new vtkODBCBoundParameter;

  param->DataTypeC = vtkODBCTypeNameC<T>();
  param->DataTypeSQL = vtkODBCTypeNameSQL<T>();
  param->BufferSize = sizeof(T);
  param->DataLength = sizeof(T);
  param->SetData(reinterpret_cast<const char*>(&data_value), sizeof(T));

  return param;
}

// Description:
// Specialization of vtkBuildBoundParameter for nullptr-terminated
// strings (i.e. CHAR and VARCHAR fields)

template <>
vtkODBCBoundParameter* vtkBuildODBCBoundParameter<const char*>(const char* const& data_value)
{
  vtkODBCBoundParameter* param = new vtkODBCBoundParameter;

  size_t len = strlen(data_value);
  param->DataTypeC = SQL_C_CHAR;
  param->DataTypeSQL = SQL_VARCHAR;
  param->BufferSize = len;
  param->DataLength = static_cast<unsigned long>(len);
  param->SetData(data_value, static_cast<unsigned long>(len));

  return param;
}

template <>
vtkODBCBoundParameter* vtkBuildODBCBoundParameter<vtkStdString>(vtkStdString const& data_value)
{
  return vtkBuildODBCBoundParameter(data_value.c_str());
}

// Description:
// Alternate signature for vtkBuildBoundParameter to handle blobs

vtkODBCBoundParameter* vtkBuildODBCBoundParameter(
  const char* data, unsigned long length, bool is_blob)
{
  vtkODBCBoundParameter* param = new vtkODBCBoundParameter;

  param->DataTypeC = SQL_C_CHAR;
  if (is_blob)
  {
    param->DataTypeSQL = SQL_VARBINARY;
  }
  else
  {
    param->DataTypeSQL = SQL_VARCHAR;
  }
  param->BufferSize = length;
  param->DataLength = length;
  param->SetData(data, length);

  return param;
}

//------------------------------------------------------------------------------

bool vtkODBCQueryInternals::PrepareQuery(
  const char* queryString, SQLHANDLE dbConnection, std::string& error_message)
{
  this->FreeStatement();
  this->FreeUserParameterList();

  // ODBC requires that drivers either support query preparation or
  // emulate it to the greatest extent possible.  It says nothing
  // about what queries may or may not be prepared.  I'm going to
  // close my eyes and pretend that all SQL is valid for preparation
  // even if bound parameters don't make sense.  If I'm wrong the
  // error messages will certainly tell me so.

  SQLRETURN status;
  status = SQLAllocHandle(SQL_HANDLE_STMT, dbConnection, &(this->Statement));
  if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
  {
    std::ostringstream errorBuf;
    errorBuf << "Unable to allocate new statement handle.  Error: "
             << GetErrorMessage(SQL_HANDLE_DBC, dbConnection);
    error_message = errorBuf.str();
    return false;
  }

  // Queries in VTK currently only support scrolling forward through
  // the results, not forward/backward/randomly.
  status = SQLSetStmtAttr(this->Statement, SQL_ATTR_CURSOR_TYPE,
    static_cast<SQLPOINTER>(SQL_CURSOR_FORWARD_ONLY), SQL_IS_UINTEGER);

  if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
  {
    error_message = GetErrorMessage(SQL_HANDLE_STMT, this->Statement);
    return false;
  }

  // ugh, I hate having to use const_cast
  status = SQLPrepare(this->Statement, reinterpret_cast<SQLCHAR*>(const_cast<char*>(queryString)),
    static_cast<SQLINTEGER>(strlen(queryString)));

  if (status != SQL_SUCCESS)
  {
    std::ostringstream errorBuf;
    errorBuf << "Unable to prepare query for execution: "
             << GetErrorMessage(SQL_HANDLE_STMT, this->Statement);
    error_message = errorBuf.str();
    return false;
  }
  else
  {
    error_message = {};
    SQLSMALLINT paramCount;
    status = SQLNumParams(this->Statement, &paramCount);
    if (status != SQL_SUCCESS)
    {
      error_message = GetErrorMessage(SQL_HANDLE_STMT, this->Statement);
      return false;
    }
    else
    {
      this->UserParameterList.resize(paramCount, nullptr);
      return true;
    }
  }
}

//------------------------------------------------------------------------------

void vtkODBCQueryInternals::FreeUserParameterList()
{
  for (unsigned int i = 0; i < this->UserParameterList.size(); ++i)
  {
    delete this->UserParameterList[i];
    this->UserParameterList[i] = nullptr;
  }
  this->UserParameterList.clear();
}

//------------------------------------------------------------------------------

bool vtkODBCQueryInternals::SetBoundParameter(int index, vtkODBCBoundParameter* param)
{
  if (index >= static_cast<int>(this->UserParameterList.size()))
  {
    vtkGenericWarningMacro(<< "ERROR: Illegal parameter index " << index
                           << ".  Did you forget to set the query?");
    return false;
  }
  else
  {
    delete this->UserParameterList[index];
    this->UserParameterList[index] = param;
    return true;
  }
}

//------------------------------------------------------------------------------

void vtkODBCQueryInternals::ClearBoundParameters()
{
  if (this->Statement)
  {
    SQLFreeStmt(this->Statement, SQL_RESET_PARAMS);
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQueryInternals::BindParametersToStatement()
{
  if (this->Statement == nullptr)
  {
    vtkGenericWarningMacro(<< "BindParametersToStatement: No prepared statement available");
    return false;
  }

  this->ClearBoundParameters();
  SQLUSMALLINT numParams = static_cast<SQLUSMALLINT>(this->UserParameterList.size());
  for (SQLUSMALLINT i = 0; i < numParams; ++i)
  {
    if (this->UserParameterList[i])
    {
      SQLRETURN status = SQLBindParameter(this->Statement,
        i + 1, // parameter indexing starts at 1
        SQL_PARAM_INPUT, this->UserParameterList[i]->DataTypeC,
        this->UserParameterList[i]->DataTypeSQL,
        0, // column size is irrelevant
        0, // decimal digits are irrelevant
        reinterpret_cast<SQLPOINTER>(this->UserParameterList[i]->Data),
        this->UserParameterList[i]->DataLength, &(this->UserParameterList[i]->BufferSize));

      if (status != SQL_SUCCESS)
      {
        vtkGenericWarningMacro(<< "Unable to bind parameter " << i
                               << " to SQL statement!  Return code: " << status);
        return false;
      }
    }
  }
  return true;
}

//------------------------------------------------------------------------------

static std::string GetErrorMessage(SQLSMALLINT handleType, SQLHANDLE handle, int* code)
{
  SQLINTEGER sqlNativeCode = 0;
  SQLSMALLINT messageLength = 0;
  SQLRETURN status;
  SQLCHAR state[SQL_SQLSTATE_SIZE + 1];
  SQLCHAR description[SQL_MAX_MESSAGE_LENGTH + 1];
  std::string finalResult;
  int i = 1;

  // There may be several error messages queued up so we need to loop
  // until we've got everything.
  std::ostringstream messagebuf;
  do
  {
    status = SQLGetDiagRec(handleType, handle, i, state, &sqlNativeCode, description,
      SQL_MAX_MESSAGE_LENGTH, &messageLength);

    description[SQL_MAX_MESSAGE_LENGTH] = 0;
    if (status == SQL_SUCCESS || status == SQL_SUCCESS_WITH_INFO)
    {
      if (code)
      {
        *code = sqlNativeCode;
      }
      if (i > 1)
      {
        messagebuf << ", ";
      }
      messagebuf << state << ' ' << description;
    }
    else if (status == SQL_ERROR || status == SQL_INVALID_HANDLE)
    {
      return messagebuf.str();
    }
    ++i;
  } while (status != SQL_NO_DATA);

  return messagebuf.str();
}

//------------------------------------------------------------------------------

vtkODBCQuery::vtkODBCQuery()
{
  this->Internals = new vtkODBCQueryInternals;
  this->InitialFetch = true;
  this->LastErrorText = nullptr;
  this->QueryText = nullptr;
}

//------------------------------------------------------------------------------

vtkODBCQuery::~vtkODBCQuery()
{
  this->SetLastErrorText(nullptr);
  this->SetQueryText(nullptr);
  delete this->Internals;
}

//------------------------------------------------------------------------------

void vtkODBCQuery::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os, indent);
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::SetQuery(const char* newQuery)
{
  this->Active = false;
  this->SetQueryText(newQuery);

  vtkODBCDatabase* db = vtkODBCDatabase::SafeDownCast(this->Database);
  if (db == nullptr)
  {
    vtkErrorMacro(<< "SHOULDN'T HAPPEN: SetQuery called with null database.  This can only happen "
                     "when you instantiate vtkODBCQuery directly.  You should always call "
                     "vtkODBCDatabase::GetQueryInstance to make a query object.");
    return false;
  }

  std::string error;
  bool prepareStatus = this->Internals->PrepareQuery(newQuery, db->Internals->Connection, error);
  if (prepareStatus)
  {
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    vtkErrorMacro(<< error);
    this->SetLastErrorText(error.c_str());
    return false;
  }
}

//------------------------------------------------------------------------------

const char* vtkODBCQuery::GetQuery()
{
  return this->GetQueryText();
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::Execute()
{
  // It's possible to call this function while a cursor is still open.
  // This is not an error, but we do need to close out the previous
  // cursor before opening up a new one.
  this->Active = false;
  SQLFreeStmt(this->Internals->Statement, SQL_CLOSE);

  this->Internals->BindParametersToStatement();

  SQLRETURN status = SQLExecute(this->Internals->Statement);

  if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
  {
    std::ostringstream errorBuf;

    errorBuf << "Unable to execute statement: "
             << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);

    this->SetLastErrorText(errorBuf.str().c_str());
    this->Active = false;
    return false;
  }
  else
  {
    vtkDebugMacro(<< "SQLExecute succeeded.");

    this->Active = true;

    this->Internals->ColumnNames->Reset();
    this->Internals->CurrentRow->Reset();
    this->Internals->ColumnIsSigned->Reset();
    this->Internals->NullPermitted->Reset();
    delete[] this->Internals->ColumnTypes;
    this->Internals->ColumnTypes = nullptr;

    // Populate the result information now, all at once, rather than
    // making a whole bunch of calls later and duplicating
    // (potentially expensive) operations.
    int numColumns = this->GetNumberOfFields();
    if (numColumns)
    {
      this->Internals->ColumnTypes = new SQLSMALLINT[numColumns];
      this->Internals->NullPermitted->SetNumberOfTuples(numColumns);
      this->Internals->CurrentRow->SetNumberOfTuples(numColumns);
      this->Internals->ColumnNames->SetNumberOfTuples(numColumns);
      this->Internals->ColumnIsSigned->SetNumberOfTuples(numColumns);

      for (int i = 0; i < numColumns; ++i)
      {
        SQLCHAR name[1024];
        SQLSMALLINT nameLength;
        SQLSMALLINT dataType;
        SQLULEN columnSize;
        SQLSMALLINT decimalDigits;
        SQLSMALLINT nullable;
        SQLLEN unsignedFlag = SQL_FALSE;

        status = SQLDescribeCol(this->Internals->Statement,
          i + 1, // 1-indexed, not 0
          name, 1024, &nameLength, &dataType, &columnSize, &decimalDigits, &nullable);

        if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
        {
          std::ostringstream errbuf;
          errbuf << "During vtkODBCQuery::Execute while looking up column " << i << ": "
                 << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
          this->SetLastErrorText(errbuf.str().c_str());
          vtkErrorMacro(<< errbuf.str());
        }

        status = SQLColAttribute(
          this->Internals->Statement, i + 1, SQL_DESC_UNSIGNED, nullptr, 0, nullptr, &unsignedFlag);

        if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
        {
          std::ostringstream errbuf;
          errbuf << "vtkODBCQuery::Execute: Unable to get unsigned flag for column " << i << ": "
                 << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
          this->SetLastErrorText(errbuf.str().c_str());
          vtkErrorMacro(<< errbuf.str());
        }

        this->Internals->ColumnNames->SetValue(i, reinterpret_cast<const char*>(name));
        this->Internals->ColumnIsSigned->SetValue(i, (unsignedFlag == SQL_FALSE));
        this->Internals->ColumnTypes[i] = dataType;
        this->Internals->NullPermitted->SetValue(i, nullable);
      } // done populating column information
    }
    this->SetLastErrorText(nullptr);
    return true;
  }
}

//------------------------------------------------------------------------------

int vtkODBCQuery::GetNumberOfFields()
{
  if (!this->Active)
  {
    return 0;
  }

  SQLSMALLINT count;
  SQLRETURN status;

  status = SQLNumResultCols(this->Internals->Statement, &count);
  if (status != SQL_SUCCESS && status != SQL_SUCCESS_WITH_INFO)
  {
    std::ostringstream errbuf;
    errbuf << "During vtkODBCQuery::GetNumberOfFields: "
           << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    return 0;
  }

  this->SetLastErrorText(nullptr);
  return count;
}

//------------------------------------------------------------------------------

const char* vtkODBCQuery::GetFieldName(int column)
{
  if (!this->Active)
  {
    vtkErrorMacro(<< "GetFieldName(): Query is not active!");
    return nullptr;
  }
  else if (column < 0 || column >= this->GetNumberOfFields())
  {
    vtkErrorMacro(<< "GetFieldName(): Illegal field index " << column);
    return nullptr;
  }
  else
  {
    return this->Internals->ColumnNames->GetValue(column).c_str();
  }
}

//------------------------------------------------------------------------------

int vtkODBCQuery::GetFieldType(int column)
{
  if (!this->Active)
  {
    vtkErrorMacro(<< "GetFieldType(): Query is not active!");
    return VTK_VOID;
  }
  else if (column < 0 || column >= this->GetNumberOfFields())
  {
    vtkErrorMacro(<< "GetFieldType(): Illegal field index " << column);
    return VTK_VOID;
  }
  else
  {

    switch (this->Internals->ColumnTypes[column])
    {
      case SQL_CHAR:
      case SQL_VARCHAR:
      case SQL_LONGVARCHAR:
      case SQL_WCHAR:
      case SQL_WVARCHAR:
      case SQL_WLONGVARCHAR:
        return VTK_STRING;

      case SQL_INTEGER:
      case SQL_NUMERIC:
        if (this->Internals->ColumnIsSigned->GetValue(column))
        {
          return VTK_INT;
        }
        else
        {
          return VTK_UNSIGNED_INT;
        }

      case SQL_TINYINT:
        if (this->Internals->ColumnIsSigned->GetValue(column))
        {
          return VTK_SIGNED_CHAR;
        }
        else
        {
          return VTK_UNSIGNED_CHAR;
        }

      case SQL_SMALLINT:
        if (this->Internals->ColumnIsSigned->GetValue(column))
        {
          return VTK_SHORT;
        }
        else
        {
          return VTK_UNSIGNED_SHORT;
        }

      case SQL_BIT:
        return VTK_BIT;

      case SQL_REAL:
      case SQL_FLOAT:
        return VTK_FLOAT;

      case SQL_DOUBLE:
        return VTK_DOUBLE;

      case SQL_BINARY:
      case SQL_VARBINARY:
      case SQL_LONGVARBINARY:
        return VTK_STRING;

      case SQL_BIGINT:
      case SQL_DECIMAL:
        return VTK_TYPE_INT64;

      case SQL_TYPE_TIMESTAMP:
        //      case SQL_TYPE_UTCDATETIME:
        //      case SQL_TYPE_UTCTIME:
      case SQL_TYPE_DATE:
      case SQL_TYPE_TIME:
        return VTK_TYPE_UINT64;

      case SQL_INTERVAL_MONTH:
      case SQL_INTERVAL_YEAR:
      case SQL_INTERVAL_DAY:
      case SQL_INTERVAL_HOUR:
      case SQL_INTERVAL_MINUTE:
      case SQL_INTERVAL_SECOND:
        return VTK_TYPE_UINT64;

        // unhandled: SQL_INTERVAL_YEAR_TO_MONTH,
        // SQL_INTERVAL_DAY_TO_HOUR, SQL_INTERVAL_DAY_TO_MINUTE,
        // SQL_INTERVAL_DAY_TO_SECOND, SQL_INTERVAL_HOUR_TO_MINUTE,
        // SQL_INTERVAL_HOUR_TO_SECOND, SQL_INTERVAL_MINUTE_TO_SECOND,
        // SQL_GUID

      default:
      {
        vtkWarningMacro(<< "Unknown type " << this->Internals->ColumnTypes[column]
                        << " returned from SQLDescribeCol");
        return VTK_VOID;
      }
    }
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::NextRow()
{
  if (!this->IsActive())
  {
    vtkErrorMacro(<< "NextRow(): Query is not active!");
    return false;
  }

  this->ClearCurrentRow();

  SQLRETURN status = SQLFetch(this->Internals->Statement);
  if (status == SQL_SUCCESS)
  {
    this->SetLastErrorText(nullptr);
    return this->CacheCurrentRow();
  }
  else if (status == SQL_NO_DATA)
  {
    this->SetLastErrorText(nullptr);
    return false;
  }
  else
  {
    return false;
  }
}

//------------------------------------------------------------------------------

vtkVariant vtkODBCQuery::DataValue(vtkIdType column)
{
  if (!this->IsActive())
  {
    vtkWarningMacro(<< "DataValue() called on inactive query");
    return vtkVariant();
  }
  else if (column < 0 || column >= this->GetNumberOfFields())
  {
    vtkWarningMacro(<< "DataValue() called with out-of-range column index " << column);
    return vtkVariant();
  }
  else
  {
    return this->Internals->CurrentRow->GetValue(column);
  }
}

//------------------------------------------------------------------------------

void vtkODBCQuery::ClearCurrentRow()
{
  for (vtkIdType i = 0; i < this->Internals->CurrentRow->GetNumberOfTuples(); ++i)
  {
    this->Internals->CurrentRow->SetValue(i, vtkVariant());
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheCurrentRow()
{
  int column;
  bool status = true;

  for (column = 0; column < this->GetNumberOfFields(); ++column)
  {
    switch (this->Internals->ColumnTypes[column])
    {
      case SQL_CHAR:
      case SQL_VARCHAR:
      case SQL_LONGVARCHAR:
        status = status & this->CacheStringColumn(column);
        break;

      case SQL_WCHAR:
      case SQL_WVARCHAR:
      case SQL_WLONGVARCHAR:
        status = status & this->CacheWideStringColumn(column);
        break;

      case SQL_DECIMAL:
        status = status & this->CacheDecimalColumn(column);
        break;

      case SQL_NUMERIC:
        status = status & this->CacheNumericColumn(column);
        break;

      case SQL_SMALLINT:
      case SQL_INTEGER:
        status = status & this->CacheIntColumn(column);
        break;

      case SQL_REAL:
      case SQL_FLOAT:
        status = status & this->CacheFloatColumn(column);
        break;

      case SQL_DOUBLE:
        status = status & this->CacheDoubleColumn(column);
        break;

      case SQL_BIT:
        status = status & this->CacheBooleanColumn(column);
        break;

      case SQL_TINYINT:
        status = status & this->CacheCharColumn(column);
        break;

      case SQL_BIGINT:
        status = status & this->CacheLongLongColumn(column);
        break;

      case SQL_BINARY:
      case SQL_VARBINARY:
      case SQL_LONGVARBINARY:
        status = status & this->CacheBinaryColumn(column);
        break;

      case SQL_TYPE_DATE:
      case SQL_TYPE_TIME:
      case SQL_TYPE_TIMESTAMP:
        //      case SQL_TYPE_UTCDATETIME:
        //      case SQL_TYPE_UTCTIME:
        status = status & this->CacheTimeColumn(column);
        break;

      case SQL_INTERVAL_MONTH:
      case SQL_INTERVAL_YEAR:
      case SQL_INTERVAL_DAY:
      case SQL_INTERVAL_HOUR:
      case SQL_INTERVAL_MINUTE:
      case SQL_INTERVAL_SECOND:
        status = status & this->CacheIntervalColumn(column);
        break;

      default:
      {
        vtkWarningMacro(<< "DataValue: Unsupported SQL data type "
                        << this->Internals->ColumnTypes[column] << " on column " << column);
        status = false;
        this->Internals->CurrentRow->SetValue(column, vtkVariant());
      };
      break;
    }
  }

  return status;
}

//------------------------------------------------------------------------------

const char* vtkODBCQuery::GetLastErrorText()
{
  return this->LastErrorText;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::HasError()
{
  return (this->LastErrorText != nullptr);
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BeginTransaction()
{
  if (!this->Database->IsOpen())
  {
    this->SetLastErrorText("Cannot begin transaction.  Database is closed.");
    return false;
  }

  vtkODBCDatabase* db = vtkODBCDatabase::SafeDownCast(this->Database);
  assert(db != nullptr);

  SQLUINTEGER ac = SQL_AUTOCOMMIT_OFF;
  SQLRETURN status = SQLSetConnectAttr(
    db->Internals->Connection, SQL_ATTR_AUTOCOMMIT, reinterpret_cast<SQLPOINTER>(ac), sizeof(ac));

  if (status != SQL_SUCCESS)
  {
    this->SetLastErrorText("Unable to disable autocommit.");
    return false;
  }
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CommitTransaction()
{
  if (!this->Database->IsOpen())
  {
    this->SetLastErrorText("Cannot commit transaction.  Database is closed.");
    return false;
  }

  vtkODBCDatabase* db = vtkODBCDatabase::SafeDownCast(this->Database);
  assert(db != nullptr);

  SQLRETURN status;
  status = SQLEndTran(SQL_HANDLE_DBC, db->Internals->Connection, SQL_COMMIT);
  if (status != SQL_SUCCESS)
  {
    this->SetLastErrorText("Unable to commit transaction.");
    return false;
  }

  // After the transaction has ended we need to turn autocommit back
  // on so the database goes back to treating every query like a
  // transaction unto itself.
  SQLUINTEGER ac = SQL_AUTOCOMMIT_ON;
  status = SQLSetConnectAttr(
    db->Internals->Connection, SQL_ATTR_AUTOCOMMIT, reinterpret_cast<SQLPOINTER>(ac), sizeof(ac));

  if (status != SQL_SUCCESS)
  {
    this->SetLastErrorText("Unable to re-enable autocommit.");
    return false;
  }

  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::RollbackTransaction()
{
  if (!this->Database->IsOpen())
  {
    this->SetLastErrorText("Cannot roll back transaction.  Database is closed.");
    return false;
  }

  vtkODBCDatabase* db = vtkODBCDatabase::SafeDownCast(this->Database);
  assert(db != nullptr);

  SQLRETURN status;
  status = SQLEndTran(SQL_HANDLE_DBC, db->Internals->Connection, SQL_ROLLBACK);
  if (status != SQL_SUCCESS)
  {
    this->SetLastErrorText("Unable to roll back transaction.");
    return false;
  }

  // After the transaction has ended we need to turn autocommit back
  // on so the database goes back to treating every query like a
  // transaction unto itself.
  SQLUINTEGER ac = SQL_AUTOCOMMIT_ON;
  status = SQLSetConnectAttr(
    db->Internals->Connection, SQL_ATTR_AUTOCOMMIT, reinterpret_cast<SQLPOINTER>(ac), sizeof(ac));

  if (status != SQL_SUCCESS)
  {
    this->SetLastErrorText("Unable to re-enable autocommit.");
    return false;
  }

  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheWideStringColumn(int column)
{
  return CacheStringColumn(column);
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheIntColumn(int column)
{
  SQLRETURN status;
  SQLINTEGER buffer;
  SQLLEN actualLength;
  SQLSMALLINT dataType;
  if (this->Internals->ColumnIsSigned->GetValue(column))
  {
    dataType = SQL_C_SLONG;
  }
  else
  {
    dataType = SQL_C_ULONG;
  }

  status = SQLGetData(this->Internals->Statement, column + 1, dataType,
    static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);

  if (status == SQL_SUCCESS)
  {
    vtkVariant result;
    if (this->Internals->ColumnIsSigned->GetValue(column))
    {
      result = vtkVariant(buffer);
    }
    else
    {
      unsigned int foo(buffer);
      result = vtkVariant(foo);
    }
    this->Internals->CurrentRow->SetValue(column, result);
    this->SetLastErrorText(nullptr);
    return true;
  }
  else if (status == SQL_NULL_DATA)
  {
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    std::ostringstream errbuf;
    errbuf << "CacheIntColumn (column " << column
           << "): ODBC error: " << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    return true;
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheLongLongColumn(int column)
{
  SQLRETURN status;
  SQLLEN actualLength;
  int dataType;
  vtkVariant result;

  if (this->Internals->ColumnIsSigned->GetValue(column))
  {
    dataType = SQL_C_SBIGINT;
    long long buffer;

    status = SQLGetData(this->Internals->Statement, column + 1, dataType,
      static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);
    result = vtkVariant(buffer);
  }
  else
  {
    dataType = SQL_C_UBIGINT;
    unsigned long long buffer;
    status = SQLGetData(this->Internals->Statement, column + 1, dataType,
      static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);
    result = vtkVariant(buffer);
  }

  if (status == SQL_SUCCESS)
  {
    this->Internals->CurrentRow->SetValue(column, result);
    this->SetLastErrorText(nullptr);
    return true;
  }
  else if (status == SQL_NULL_DATA)
  {
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    std::ostringstream errbuf;
    errbuf << "CacheLongLongColumn (column " << column
           << "): ODBC error: " << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    return false;
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheCharColumn(int column)
{
  SQLRETURN status;
  unsigned char buffer;
  SQLLEN actualLength;

  status = SQLGetData(this->Internals->Statement, column + 1, SQL_C_TINYINT,
    static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);

  if (status == SQL_SUCCESS)
  {
    vtkVariant result;
    if (this->Internals->ColumnIsSigned->GetValue(column))
    {
      result = vtkVariant(buffer);
    }
    else
    {
      unsigned char foo = buffer;
      result = vtkVariant(foo);
    }
    this->Internals->CurrentRow->SetValue(column, result);
    this->SetLastErrorText(nullptr);
    return true;
  }
  else if (status == SQL_NULL_DATA)
  {
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    std::ostringstream errbuf;
    errbuf << "CacheCharColumn (column " << column
           << "): ODBC error: " << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    return false;
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheBooleanColumn(int column)
{
  SQLRETURN status;
  unsigned char buffer;
  SQLLEN actualLength;

  status = SQLGetData(this->Internals->Statement, column + 1, SQL_C_TINYINT,
    static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);

  if (status == SQL_SUCCESS)
  {
    vtkVariant result(buffer != 0);
    this->Internals->CurrentRow->SetValue(column, result);
    this->SetLastErrorText(nullptr);
    return true;
  }
  else if (status == SQL_NULL_DATA)
  {
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    std::ostringstream errbuf;
    errbuf << "CacheCharColumn (column " << column
           << "): ODBC error: " << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    return false;
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheFloatColumn(int column)
{
  SQLRETURN status;
  SQLFLOAT buffer;
  SQLLEN actualLength;

  status = SQLGetData(this->Internals->Statement, column + 1,
    (sizeof(buffer) == sizeof(double) ? SQL_C_DOUBLE : SQL_C_FLOAT),
    static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);

  if (status == SQL_SUCCESS)
  {
    vtkVariant result(buffer);
    this->Internals->CurrentRow->SetValue(column, result);
    this->SetLastErrorText(nullptr);
    return true;
  }
  else if (status == SQL_NULL_DATA)
  {
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    std::ostringstream errbuf;
    errbuf << "CacheFloatColumn (column " << column
           << "): ODBC error: " << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    return false;
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheDoubleColumn(int column)
{
  SQLRETURN status;
  SQLDOUBLE buffer;
  SQLLEN actualLength;

  status = SQLGetData(this->Internals->Statement, column + 1, SQL_C_DOUBLE,
    static_cast<SQLPOINTER>(&buffer), sizeof(buffer), &actualLength);

  if (status == SQL_SUCCESS)
  {
    vtkVariant result(buffer);
    this->Internals->CurrentRow->SetValue(column, result);
    this->SetLastErrorText(nullptr);
    return true;
  }
  else if (status == SQL_NULL_DATA)
  {
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(nullptr);
    return true;
  }
  else
  {
    std::ostringstream errbuf;
    errbuf << "CacheDoubleColumn (column " << column
           << "): ODBC error: " << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->SetLastErrorText(errbuf.str().c_str());
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    return false;
  }
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheStringColumn(int column)
{
  SQLRETURN status;
  SQLLEN bufferLength;
  SQLLEN indicator;
  std::string result;
  std::ostringstream outbuf;

  bufferLength = 65536; // this is a pretty reasonable compromise
                        // between the expense of ODBC requests and
                        // application memory usage
  std::vector<char> buffer(bufferLength);

  while (true)
  {
    status = SQLGetData(this->Internals->Statement, column + 1, SQL_C_CHAR,
      static_cast<SQLPOINTER>(buffer.data()), bufferLength, &indicator);
    /*
        cerr << "once around the read loop for column " << column << ": status "
        << status << ", indicator " << indicator << "\n";
    */

    int bytesToWrite = 0;
    if (status == SQL_SUCCESS || status == SQL_SUCCESS_WITH_INFO)
    {
      if (status == SQL_NO_DATA)
      {
        // done reading!
        break;
      }
      else if (indicator == SQL_NULL_DATA)
      {
        //        cerr << "Wide string value for column " << column << " is null\n";
        break;
      }
      // If we get to this point then there's data to read.
      if (indicator == SQL_NO_TOTAL)
      {
        bytesToWrite = bufferLength;
      }
      else if (indicator > bufferLength)
      {
        bytesToWrite = bufferLength;
      }
      else
      {
        bytesToWrite = indicator;
      }

      //      cerr << "Writing " << bytesToWrite << " characters in string column\n";

      if (status == SQL_SUCCESS_WITH_INFO)
      {
        // eat the null terminator
        bytesToWrite -= 1;
      }
      outbuf.write(buffer.data(), bytesToWrite);
      if (status == SQL_SUCCESS)
      {
        // we retrieved everything in one pass
        break;
      }
    }
    else if (status == SQL_ERROR)
    {
      // there was some sort of error
      std::ostringstream errbuf;
      errbuf << "Error while reading wide string column " << column << ": "
             << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
      this->SetLastErrorText(errbuf.str().c_str());
      cerr << errbuf.str() << "\n";
      this->Internals->CurrentRow->SetValue(column, vtkVariant());
      return false;
    }
    else if (status == SQL_INVALID_HANDLE)
    {
      this->SetLastErrorText("CacheWideStringColumn: Attempted to read from invalid handle!");
      this->Internals->CurrentRow->SetValue(column, vtkVariant());
      return false;
    }
  }

  this->Internals->CurrentRow->SetValue(column, vtkVariant(outbuf.str()));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheBinaryColumn(int column)
{
  SQLRETURN status;
  std::string result;

  SQLSMALLINT nameLength;
  SQLSMALLINT columnType;
  SQLULEN columnSize;
  SQLSMALLINT columnScale;
  SQLSMALLINT nullable;
  SQLLEN indicator;
  SQLTCHAR namebuf[1024];

  status = SQLDescribeCol(this->Internals->Statement, column + 1, namebuf, 1024, &nameLength,
    &columnType, &columnSize, &columnScale, &nullable);

  if (status != SQL_SUCCESS)
  {
    std::ostringstream errbuf;
    errbuf << "CacheBinaryColumn: Unable to describe column " << column << ": "
           << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
    this->Internals->CurrentRow->SetValue(column, vtkVariant());
    this->SetLastErrorText(errbuf.str().c_str());
    return false;
  }

  // If the data is smaller than 64k just read it in one
  // chunk. Otherwise read it in multiple passes.
  if (columnSize == 0)
  {
    columnSize = 256; // maybe it can't be determined
  }
  else if (columnSize > 65536)
  {
    columnSize = 65536; // read in 64k chunks
  }
  std::vector<char> buffer(columnSize);

  this->SetLastErrorText(nullptr);

  std::ostringstream outbuf;

  while (true)
  {
    status = SQLGetData(this->Internals->Statement, column + 1, SQL_C_CHAR,
      static_cast<SQLPOINTER>(buffer.data()), columnSize, &indicator);
    /*
        cerr << "once around the read loop for column " << column << ": status "
        << status << ", indicator " << indicator << "\n";
    */

    int bytesToWrite = 0;
    if (status == SQL_SUCCESS || status == SQL_SUCCESS_WITH_INFO)
    {
      if (status == SQL_NO_DATA)
      {
        // done reading!
        break;
      }
      else if (indicator == SQL_NULL_DATA)
      {
        //        cerr << "Wide string value for column " << column << " is null\n";
        break;
      }
      // If we get to this point then there's data to read.
      if (indicator == SQL_NO_TOTAL)
      {
        bytesToWrite = columnSize;
      }
      else if (indicator > static_cast<SQLLEN>(columnSize))
      {
        bytesToWrite = columnSize;
      }
      else
      {
        bytesToWrite = indicator;
      }

      //      cerr << "Writing " << bytesToWrite << " characters in string column\n";

      if (status == SQL_SUCCESS_WITH_INFO)
      {
        // eat the null terminator
        bytesToWrite -= 1;
      }
      outbuf.write(buffer.data(), bytesToWrite);
      if (status == SQL_SUCCESS)
      {
        // we retrieved everything in one pass
        break;
      }
    }
    else if (status == SQL_ERROR)
    {
      // there was some sort of error
      std::ostringstream errbuf;
      errbuf << "Error while reading binary column " << column << ": "
             << GetErrorMessage(SQL_HANDLE_STMT, this->Internals->Statement);
      this->SetLastErrorText(errbuf.str().c_str());
      cerr << errbuf.str() << "\n";
      this->Internals->CurrentRow->SetValue(column, vtkVariant());
      return false;
    }
    else if (status == SQL_INVALID_HANDLE)
    {
      this->SetLastErrorText("CacheWideStringColumn: Attempted to read from invalid handle!");
      this->Internals->CurrentRow->SetValue(column, vtkVariant());
      return false;
    }
  }

  this->Internals->CurrentRow->SetValue(column, vtkVariant(outbuf.str()));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheDecimalColumn(int column)
{
  this->Internals->CurrentRow->SetValue(column, vtkVariant());
  this->SetLastErrorText(nullptr);
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheNumericColumn(int column)
{
  this->Internals->CurrentRow->SetValue(column, vtkVariant());
  this->SetLastErrorText(nullptr);
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheTimeColumn(int column)
{
  this->Internals->CurrentRow->SetValue(column, vtkVariant());
  this->SetLastErrorText(nullptr);
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::CacheIntervalColumn(int column)
{
  this->Internals->CurrentRow->SetValue(column, vtkVariant());
  this->SetLastErrorText(nullptr);
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, unsigned char value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, signed char value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, unsigned short value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, signed short value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, unsigned int value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, signed int value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, unsigned long value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, signed long value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, unsigned long long value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, long long value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, float value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, double value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, const char* value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, const vtkStdString& value)
{
  this->Internals->SetBoundParameter(index, vtkBuildODBCBoundParameter(value));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, const char* data, size_t length)
{
  this->Internals->SetBoundParameter(
    index, vtkBuildODBCBoundParameter(data, static_cast<unsigned long>(length), false));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::BindParameter(int index, const void* data, size_t length)
{
  this->Internals->SetBoundParameter(index,
    vtkBuildODBCBoundParameter(
      reinterpret_cast<const char*>(data), static_cast<unsigned long>(length), true));
  return true;
}

//------------------------------------------------------------------------------

bool vtkODBCQuery::ClearParameterBindings()
{
  this->Internals->ClearBoundParameters();
  return true;
}
VTK_ABI_NAMESPACE_END
