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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRowQueryToTable.cxx
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.
-------------------------------------------------------------------------*/
#include "vtkRowQueryToTable.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkRowQuery.h"
#include "vtkStringArray.h"
#include "vtkTable.h"
#include "vtkTypeUInt64Array.h"
#include "vtkVariant.h"
#include "vtkVariantArray.h"
#include <sstream>
vtkStandardNewMacro(vtkRowQueryToTable);
vtkRowQueryToTable::vtkRowQueryToTable()
{
this->SetNumberOfInputPorts(0);
this->Query = NULL;
}
vtkRowQueryToTable::~vtkRowQueryToTable()
{
if (this->Query)
{
this->Query->Delete();
this->Query = NULL;
}
}
void vtkRowQueryToTable::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Query: " << (this->Query ? "" : "NULL") << endl;
if (this->Query)
{
this->Query->PrintSelf(os, indent.GetNextIndent());
}
}
vtkCxxSetObjectMacro(vtkRowQueryToTable, Query, vtkRowQuery);
unsigned long vtkRowQueryToTable::GetMTime()
{
unsigned long mTime = this->Superclass::GetMTime();
if (this->Query != NULL)
{
unsigned long time = this->Query->GetMTime();
mTime = (time > mTime ? time : mTime);
}
return mTime;
}
int vtkRowQueryToTable::RequestData(
vtkInformation*,
vtkInformationVector** vtkNotUsed(inputVector),
vtkInformationVector* outputVector)
{
if (this->Query == NULL)
{
vtkErrorMacro("Query undefined.");
return 0;
}
vtkTable* output = vtkTable::GetData(outputVector);
// Set up the columns
this->Query->Execute();
// Check for query error
if (this->Query->HasError())
{
vtkErrorMacro("Query Error: " << this->Query->GetLastErrorText());
return 0;
}
int cols = this->Query->GetNumberOfFields();
for (int c = 0; c < cols; c++)
{
vtkAbstractArray* arr;
int type = this->Query->GetFieldType(c);
// Take care of the special case of uint64
// to ensure timepoints have specific array type
if (type == VTK_TYPE_UINT64)
{
arr = vtkTypeUInt64Array::New();
}
else if (type == 0)
{
arr = vtkAbstractArray::CreateArray(VTK_DOUBLE);
}
else
{
arr = vtkAbstractArray::CreateArray(type);
}
// Make sure name doesn't clash with existing name.
const char* name = this->Query->GetFieldName(c);
if (output->GetColumnByName(name))
{
int i = 1;
std::ostringstream oss;
vtkStdString newName;
do
{
oss.str("");
oss << name << "_" << i;
newName = oss.str();
++i;
} while (output->GetColumnByName(newName));
arr->SetName(newName);
}
else
{
arr->SetName(name);
}
// Add the column to the table.
output->AddColumn(arr);
arr->Delete();
}
// Fill the table
int numRows = 0;
float progressGuess = 0;
vtkVariantArray* rowArray = vtkVariantArray::New();
while (this->Query->NextRow(rowArray))
{
output->InsertNextRow(rowArray);
// Update progress every 100 rows
numRows++;
if ((numRows%100)==0)
{
// 1% for every 100 rows, and then 'spin around'
progressGuess = ((numRows/100)%100)*.01;
this->UpdateProgress(progressGuess);
}
}
rowArray->Delete();
return 1;
}
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