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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkAbstractArray.h"
#include "vtkInformation.h"
#include "vtkObjectFactory.h"
#include "vtkPostgreSQLDatabase.h"
#include "vtkPostgreSQLQuery.h"
#include "vtkSmartPointer.h"
#include "vtkTable.h"
#include "vtkVariant.h"
#include "vtkTableToPostgreSQLWriter.h"
//------------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkTableToPostgreSQLWriter);
//------------------------------------------------------------------------------
vtkTableToPostgreSQLWriter::vtkTableToPostgreSQLWriter()
{
this->Database = nullptr;
}
//------------------------------------------------------------------------------
vtkTableToPostgreSQLWriter::~vtkTableToPostgreSQLWriter() = default;
//------------------------------------------------------------------------------
void vtkTableToPostgreSQLWriter::WriteData()
{
// Make sure we have all the information we need to create a PostgreSQL table
if (!this->Database)
{
vtkErrorMacro(<< "No open database connection");
return;
}
if (!this->Database->IsA("vtkPostgreSQLDatabase"))
{
vtkErrorMacro(<< "Wrong type of database for this writer");
return;
}
if (this->TableName.empty())
{
vtkErrorMacro(<< "No table name specified!");
return;
}
// converting this table to PostgreSQL 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
vtkPostgreSQLQuery* query = static_cast<vtkPostgreSQLQuery*>(this->Database->GetQueryInstance());
query->SetQuery(createTableQuery.c_str());
cout << createTableQuery << endl;
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();
}
//------------------------------------------------------------------------------
int vtkTableToPostgreSQLWriter::FillInputPortInformation(int, vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
return 1;
}
//------------------------------------------------------------------------------
vtkTable* vtkTableToPostgreSQLWriter::GetInput()
{
return vtkTable::SafeDownCast(this->Superclass::GetInput());
}
//------------------------------------------------------------------------------
vtkTable* vtkTableToPostgreSQLWriter::GetInput(int port)
{
return vtkTable::SafeDownCast(this->Superclass::GetInput(port));
}
//------------------------------------------------------------------------------
void vtkTableToPostgreSQLWriter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
VTK_ABI_NAMESPACE_END
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