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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2008 Sandia Corporation
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov
/**
* @class vtkPostgreSQLQuery
* @brief vtkSQLQuery implementation for PostgreSQL databases
*
*
*
* This is an implementation of vtkSQLQuery for PostgreSQL databases. See
* the documentation for vtkSQLQuery for information about what the
* methods do.
*
*
* @par Thanks:
* Thanks to David Thompson and Andy Wilson from Sandia National
* Laboratories for implementing this class.
*
* @sa
* vtkSQLDatabase vtkSQLQuery vtkPostgreSQLDatabase
*/
#ifndef vtkPostgreSQLQuery_h
#define vtkPostgreSQLQuery_h
#include "vtkIOPostgreSQLModule.h" // For export macro
#include "vtkSQLQuery.h"
VTK_ABI_NAMESPACE_BEGIN
class vtkPostgreSQLDatabase;
class vtkVariant;
class vtkVariantArray;
class vtkPostgreSQLQueryPrivate;
class VTKIOPOSTGRESQL_EXPORT vtkPostgreSQLQuery : public vtkSQLQuery
{
public:
static vtkPostgreSQLQuery* New();
void PrintSelf(ostream& os, vtkIndent indent) override;
vtkTypeMacro(vtkPostgreSQLQuery, vtkSQLQuery);
/**
* Execute the query. This must be performed
* before any field name or data access functions
* are used.
*/
bool Execute() override;
/**
* The number of fields in the query result.
*/
int GetNumberOfFields() override;
/**
* Return the name of the specified query field.
*/
const char* GetFieldName(int i) override;
/**
* Return the type of the field, using the constants defined in vtkType.h.
*/
int GetFieldType(int i) override;
/**
* Advance row, return false if past end.
*/
bool NextRow() override;
/**
* Return true if there is an error on the current query.
*/
bool HasError() override;
///@{
/**
* Begin, abort (roll back), or commit a transaction.
*/
bool BeginTransaction() override;
bool RollbackTransaction() override;
bool CommitTransaction() override;
///@}
/**
* Return data in current row, field c
*/
vtkVariant DataValue(vtkIdType c) override;
/**
* Get the last error text from the query
*/
const char* GetLastErrorText() override;
/**
* Escape a string for inclusion into an SQL query
*/
vtkStdString EscapeString(vtkStdString s, bool addSurroundingQuotes = true) override;
/**
* Unlike some databases, Postgres can tell you right away how many
* rows are in the results of your query.
*/
int GetNumberOfRows();
protected:
vtkPostgreSQLQuery();
~vtkPostgreSQLQuery() override;
vtkSetStringMacro(LastErrorText);
bool IsColumnBinary(int whichColumn);
const char* GetColumnRawData(int whichColumn);
bool TransactionInProgress;
char* LastErrorText;
int CurrentRow;
vtkPostgreSQLQueryPrivate* QueryInternals;
void DeleteQueryResults();
friend class vtkPostgreSQLDatabase;
private:
vtkPostgreSQLQuery(const vtkPostgreSQLQuery&) = delete;
void operator=(const vtkPostgreSQLQuery&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif // vtkPostgreSQLQuery_h
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