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/*=========================================================================
Program: Visualization Toolkit
Module: vtkTableToMySQLWriter.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.
=========================================================================*/
#include "vtkAbstractArray.h"
#include "vtkInformation.h"
#include "vtkObjectFactory.h"
#include "vtkMySQLDatabase.h"
#include "vtkMySQLQuery.h"
#include "vtkSmartPointer.h"
#include "vtkTable.h"
#include "vtkVariant.h"
#include "vtkTableToMySQLWriter.h"
//----------------------------------------------------------------------------
vtkStandardNewMacro(vtkTableToMySQLWriter);
//----------------------------------------------------------------------------
vtkTableToMySQLWriter::vtkTableToMySQLWriter()
{
this->Database = 0;
}
//----------------------------------------------------------------------------
vtkTableToMySQLWriter::~vtkTableToMySQLWriter()
{
}
//----------------------------------------------------------------------------
void vtkTableToMySQLWriter::WriteData()
{
//Make sure we have all the information we need to create a MySQL table
if(!this->Database)
{
vtkErrorMacro(<<"No open database connection");
return;
}
if(!this->Database->IsA("vtkMySQLDatabase"))
{
vtkErrorMacro(<<"Wrong type of database for this writer");
return;
}
if(this->TableName == "")
{
vtkErrorMacro(<<"No table name specified!");
return;
}
//converting this table to MySQL will require two queries: one to create
//the table, and another to populate its rows with data.
std::string createTableQuery = "CREATE table ";
createTableQuery += this->TableName;
createTableQuery += "(";
std::string insertPreamble = "INSERT into ";
insertPreamble += this->TableName;
insertPreamble += "(";
//get the columns from the vtkTable to finish the query
int numColumns = this->GetInput()->GetNumberOfColumns();
for(int i = 0; i < numColumns; i++)
{
//get this column's name
std::string columnName = this->GetInput()->GetColumn(i)->GetName();
createTableQuery += columnName;
insertPreamble += columnName;
//figure out what type of data is stored in this column
std::string columnType = this->GetInput()->GetColumn(i)->GetClassName();
if( (columnType.find("String") != std::string::npos) ||
(columnType.find("Data") != std::string::npos) ||
(columnType.find("Variant") != std::string::npos) )
{
createTableQuery += " TEXT";
}
else if( (columnType.find("Double") != std::string::npos) ||
(columnType.find("Float") != std::string::npos) )
{
createTableQuery += " DOUBLE";
}
else
{
createTableQuery += " INTEGER";
}
if(i == numColumns - 1)
{
createTableQuery += ");";
insertPreamble += ") VALUES (";
}
else
{
createTableQuery += ", ";
insertPreamble += ", ";
}
}
//perform the create table query
vtkMySQLQuery *query =
static_cast<vtkMySQLQuery*>(this->Database->GetQueryInstance());
query->SetQuery(createTableQuery.c_str());
if(!query->Execute())
{
vtkErrorMacro(<<"Error performing 'create table' query");
}
//iterate over the rows of the vtkTable to complete the insert query
int numRows = this->GetInput()->GetNumberOfRows();
for(int i = 0; i < numRows; i++)
{
std::string insertQuery = insertPreamble;
for (int j = 0; j < numColumns; j++)
{
insertQuery += "'" + this->GetInput()->GetValue(i, j).ToString() + "'";
if(j < numColumns - 1)
{
insertQuery += ", ";
}
}
insertQuery += ");";
//perform the insert query for this row
query->SetQuery(insertQuery.c_str());
if(!query->Execute())
{
vtkErrorMacro(<<"Error performing 'insert' query");
}
}
//cleanup and return
query->Delete();
return;
}
//----------------------------------------------------------------------------
int vtkTableToMySQLWriter::FillInputPortInformation(int, vtkInformation *info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
return 1;
}
//----------------------------------------------------------------------------
vtkTable* vtkTableToMySQLWriter::GetInput()
{
return vtkTable::SafeDownCast(this->Superclass::GetInput());
}
//----------------------------------------------------------------------------
vtkTable* vtkTableToMySQLWriter::GetInput(int port)
{
return vtkTable::SafeDownCast(this->Superclass::GetInput(port));
}
//----------------------------------------------------------------------------
void vtkTableToMySQLWriter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
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