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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: TestSQLiteDatabase.cxx,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.
----------------------------------------------------------------------------*/
// .SECTION Thanks
// Thanks to Andrew Wilson from Sandia National Laboratories for implementing
// this test.
#include "vtkSQLiteDatabase.h"
#include "vtkSQLQuery.h"
#include "vtkSQLTableReader.h"
#include "vtkStdString.h"
#include "vtkTable.h"
#include "vtkVariant.h"
#include "vtkVariantArray.h"
int TestSQLiteDatabase(int /*argc*/, char* /*argv*/[])
{
const char *queryText = "SELECT name, age, weight FROM people WHERE age <= 20";
vtkSQLiteDatabase *db = vtkSQLiteDatabase::New();
db->SetFileName(":memory:");
bool status = db->Open();
if (!status)
{
cerr << "Couldn't open database.\n";
return 1;
}
vtkSQLQuery* query = db->GetQueryInstance();
vtkStdString createQuery("CREATE TABLE IF NOT EXISTS people (name TEXT, age INTEGER, weight FLOAT)");
cout << createQuery << endl;
query->SetQuery(createQuery.c_str());
if (!query->Execute())
{
cerr << "Create query failed" << endl;
return 1;
}
for (int i = 0; i < 40; i++)
{
char insertQuery[200];
sprintf(insertQuery, "INSERT INTO people VALUES('John Doe %d', %d, %d)",
i, i, 10*i);
cout << insertQuery << endl;
query->SetQuery(insertQuery);
if (!query->Execute())
{
cerr << "Insert query " << i << " failed" << endl;
return 1;
}
}
query->SetQuery(queryText);
cerr << endl << "Running query: " << query->GetQuery() << endl;
cerr << endl << "Using vtkSQLQuery directly to execute query:" << endl;
if (!query->Execute())
{
cerr << "Query failed" << endl;
return 1;
}
for (int col = 0; col < query->GetNumberOfFields(); col++)
{
if (col > 0)
{
cerr << ", ";
}
cerr << query->GetFieldName(col);
}
cerr << endl;
while (query->NextRow())
{
for (int field = 0; field < query->GetNumberOfFields(); field++)
{
if (field > 0)
{
cerr << ", ";
}
cerr << query->DataValue(field).ToString().c_str();
}
cerr << endl;
}
cerr << endl << "Using vtkSQLQuery to execute query and retrieve by row:" << endl;
if (!query->Execute())
{
cerr << "Query failed" << endl;
return 1;
}
for (int col = 0; col < query->GetNumberOfFields(); col++)
{
if (col > 0)
{
cerr << ", ";
}
cerr << query->GetFieldName(col);
}
cerr << endl;
vtkVariantArray* va = vtkVariantArray::New();
while (query->NextRow(va))
{
for (int field = 0; field < va->GetNumberOfValues(); field++)
{
if (field > 0)
{
cerr << ", ";
}
cerr << va->GetValue(field).ToString().c_str();
}
cerr << endl;
}
va->Delete();
cerr << endl << "Using vtkSQLTableReader to execute query:" << endl;
vtkSQLTableReader* reader = vtkSQLTableReader::New();
reader->SetQuery(query);
reader->Update();
vtkTable* table = reader->GetOutput();
for (vtkIdType col = 0; col < table->GetNumberOfColumns(); col++)
{
table->GetColumn(col)->Print(cerr);
}
cerr << endl;
for (vtkIdType row = 0; row < table->GetNumberOfRows(); row++)
{
for (vtkIdType col = 0; col < table->GetNumberOfColumns(); col++)
{
vtkVariant v = table->GetValue(row, col);
cerr << "row " << row << ", col " << col << " - "
<< v.ToString() << " (" << vtkImageScalarTypeNameMacro(v.GetType()) << ")" << endl;
}
}
reader->Delete();
query->Delete();
db->Delete();
return 0;
}
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