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vtkQtSQLQuery.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkQtSQLQuery.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
15 /*-------------------------------------------------------------------------
16  Copyright 2008 Sandia Corporation.
17  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
18  the U.S. Government retains certain rights in this software.
19 -------------------------------------------------------------------------*/
28 #ifndef vtkQtSQLQuery_h
29 #define vtkQtSQLQuery_h
30 
31 // Check for Qt SQL module before defining this class.
32 #include <qglobal.h> // Needed to check if SQL is available
33 #if (QT_EDITION & QT_MODULE_SQL)
34 
35 #include "vtkGUISupportQtSQLModule.h" // For export macro
36 #include "vtkSQLQuery.h"
37 
38 class vtkVariant;
39 class vtkQtSQLQueryInternals;
40 
41 class VTKGUISUPPORTQTSQL_EXPORT vtkQtSQLQuery : public vtkSQLQuery
42 {
43 public:
44  static vtkQtSQLQuery* New();
45  vtkTypeMacro(vtkQtSQLQuery, vtkSQLQuery);
46  void PrintSelf(ostream& os, vtkIndent indent);
47 
53  virtual bool Execute();
54 
58  virtual int GetNumberOfFields();
59 
63  virtual const char* GetFieldName(int col);
64 
68  virtual int GetFieldType(int col);
69 
73  virtual bool NextRow();
74 
78  virtual vtkVariant DataValue(vtkIdType c);
79 
83  virtual bool HasError();
84 
88  virtual const char* GetLastErrorText();
89 
90 protected:
91  vtkQtSQLQuery();
92  ~vtkQtSQLQuery();
93 
94  vtkQtSQLQueryInternals* Internals;
95  friend class vtkQtSQLDatabase;
96 
97 private:
98 
99  // Using the convenience function internally
100  vtkSetStringMacro(LastErrorText);
101 
102  char* LastErrorText;
103 
104  vtkQtSQLQuery(const vtkQtSQLQuery &) VTK_DELETE_FUNCTION;
105  void operator=(const vtkQtSQLQuery &) VTK_DELETE_FUNCTION;
106 };
107 
108 #endif // (QT_EDITION & QT_MODULE_SQL)
109 #endif // vtkQtSQLQuery_h
110 
virtual bool NextRow()=0
Advance row, return false if past end.
virtual const char * GetFieldName(int i)=0
Return the name of the specified query field.
int vtkIdType
Definition: vtkType.h:287
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
A atomic type representing the union of many types.
Definition: vtkVariant.h:75
virtual bool HasError()=0
Returns true if an error is set, otherwise false.
query class associated with vtkQtSQLDatabase
a simple class to control print indentation
Definition: vtkIndent.h:39
virtual int GetNumberOfFields()=0
The number of fields in the query result.
virtual int GetFieldType(int i)=0
Return the type of the field, using the constants defined in vtkType.h.
virtual bool Execute()=0
Execute the query.
virtual vtkVariant DataValue(vtkIdType c)=0
Return data in current row, field c.
executes an sql query and retrieves results
Definition: vtkSQLQuery.h:74
virtual const char * GetLastErrorText()=0
Get the last error text from the query.
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on...
maintains a connection to an sql database