vtkPostgreSQLQuery.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkPostgreSQLQuery.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkPostgreSQLQuery_h
#define vtkPostgreSQLQuery_h

#include "vtkIOPostgreSQLModule.h" // For export macro
#include "vtkSQLQuery.h"

class vtkPostgreSQLDatabase;
class vtkVariant;
class vtkVariantArray;
class vtkPostgreSQLQueryPrivate;

class VTKIOPOSTGRESQL_EXPORT vtkPostgreSQLQuery : public vtkSQLQuery
{
public:
  static vtkPostgreSQLQuery* New();
  void PrintSelf( ostream& os, vtkIndent indent );
  vtkTypeMacro(vtkPostgreSQLQuery, vtkSQLQuery);

  bool Execute();

  int GetNumberOfFields();

  const char* GetFieldName( int i );

  int GetFieldType( int i );

  bool NextRow();

  bool HasError();


  bool BeginTransaction();
  bool RollbackTransaction();
  bool CommitTransaction();

  vtkVariant DataValue( vtkIdType c );

  const char* GetLastErrorText();

  virtual vtkStdString EscapeString( vtkStdString s, bool addSurroundingQuotes = true );

  int GetNumberOfRows();

protected:
  vtkPostgreSQLQuery();
  ~vtkPostgreSQLQuery();

  vtkSetStringMacro(LastErrorText);

  bool IsColumnBinary(int whichColumn);
  const char *GetColumnRawData(int whichColumn);

  bool TransactionInProgress;
  char *LastErrorText;
  int CurrentRow;

  vtkPostgreSQLQueryPrivate *QueryInternals;

  void DeleteQueryResults();

  friend class vtkPostgreSQLDatabase;

private:
  vtkPostgreSQLQuery( const vtkPostgreSQLQuery& ) VTK_DELETE_FUNCTION;
  void operator = ( const vtkPostgreSQLQuery& ) VTK_DELETE_FUNCTION;
};

#endif // vtkPostgreSQLQuery_h