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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkSQLiteQuery.h,v $
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 (c) Sandia Corporation
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
----------------------------------------------------------------------------*/
// .NAME vtkSQLiteQuery - vtkSQLQuery implementation for SQLite databases
//
// .SECTION Description
//
// This is an implementation of vtkSQLQuery for SQLite databases. See
// the documentation for vtkSQLQuery for information about what the
// methods do.
//
// .SECTION Bugs
//
// Sometimes Execute() will return false (meaning an error) but
// GetLastErrorText() winds up null. I am not certain why this is
// happening.
//
// .SECTION Thanks
// Thanks to Andrew Wilson from Sandia National Laboratories for implementing
// this class.
//
// .SECTION See Also
// vtkSQLDatabase vtkSQLQuery vtkSQLiteDatabase
#ifndef __vtkSQLiteQuery_h
#define __vtkSQLiteQuery_h
#include "vtkSQLQuery.h"
class vtkSQLiteDatabase;
class vtkVariant;
class vtkVariantArray;
struct vtk_sqlite3_stmt;
class VTK_IO_EXPORT vtkSQLiteQuery : public vtkSQLQuery
{
//BTX
friend class vtkSQLiteDatabase;
//ETX
public:
vtkTypeRevisionMacro(vtkSQLiteQuery, vtkSQLQuery);
void PrintSelf(ostream& os, vtkIndent indent);
static vtkSQLiteQuery *New();
// Description:
// Execute the query. This must be performed
// before any field name or data access functions
// are used.
bool Execute();
// Description:
// The number of fields in the query result.
int GetNumberOfFields();
// Description:
// Return the name of the specified query field.
const char* GetFieldName(int i);
// Description:
// Return the type of the field, using the constants defined in vtkType.h.
int GetFieldType(int i);
// Description:
// Advance row, return false if past end.
bool NextRow();
// Description:
// Return true if there is an error on the current query.
bool HasError();
// Description:
// Begin, abort (roll back), or commit a transaction.
bool BeginTransaction();
bool RollbackTransaction();
bool CommitTransaction();
//BTX
// Description:
// Return data in current row, field c
vtkVariant DataValue(vtkIdType c);
//ETX
// Description:
// Get the last error text from the query
const char* GetLastErrorText();
protected:
vtkSQLiteQuery();
~vtkSQLiteQuery();
vtkSetStringMacro(LastErrorText);
private:
vtkSQLiteQuery(const vtkSQLiteQuery &); // Not implemented.
void operator=(const vtkSQLiteQuery &); // Not implemented.
vtk_sqlite3_stmt *Statement;
bool InitialFetch;
int InitialFetchResult;
char *LastErrorText;
bool TransactionInProgress;
};
#endif // __vtkSQLiteQuery_h
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