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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPostgreSQLDatabasePrivate.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.
-------------------------------------------------------------------------*/
/**
* @class vtkPostgreSQLDatabasePrivate
* @brief internal details of a connection to a PostgreSQL database
*
*
*
* This class does two things. First, it holds the (pointer to the)
* PGconn struct that represents an actual database connection. Second,
* it holds a map from Postgres data types as they exist in the database
* to VTK data types.
*
* You should never have to deal with this class outside of
* vtkPostgreSQLDatabase and vtkPostgreSQLQuery.
*/
#ifndef vtkPostgreSQLDatabasePrivate_h
#define vtkPostgreSQLDatabasePrivate_h
#include "vtkStdString.h"
#include "vtkType.h"
#include "vtkTimeStamp.h"
#include <libpq-fe.h>
#include <map>
class vtkPostgreSQLDatabasePrivate
{
public:
vtkPostgreSQLDatabasePrivate()
{
this->Connection = NULL;
}
/**
* Destroy the database connection. Any uncommitted transaction will be aborted.
*/
virtual ~vtkPostgreSQLDatabasePrivate()
{
if (this->Connection)
{
PQfinish(this->Connection);
}
}
// Given a Postgres column type OID, return a VTK array type (see vtkType.h).
int GetVTKTypeFromOID( Oid pgtype )
{
std::map<Oid,int>::const_iterator it = this->DataTypeMap.find( pgtype );
if ( it == this->DataTypeMap.end() )
{
return VTK_STRING;
}
return it->second;
}
// This is the actual database connection. It will be NULL if no
// connection is open.
PGconn *Connection;
// Map Postgres column types to VTK types.
std::map<Oid,int> DataTypeMap;
};
#endif // vtkPostgreSQLDatabasePrivate_h
// VTK-HeaderTest-Exclude: vtkPostgreSQLDatabasePrivate.h
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