abstract interface for queries that return row-oriented results. More...

#include <vtkRowQuery.h>

Inheritance diagram for vtkRowQuery:

Collaboration diagram for vtkRowQuery:

Public Types
typedef vtkObject	Superclass

Public Member Functions
virtual int	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

vtkRowQuery *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual bool	Execute ()=0
	Execute the query. More...

virtual int	GetNumberOfFields ()=0
	The number of fields in the query result. More...

virtual const char *	GetFieldName (int i)=0
	Return the name of the specified query field. More...

virtual int	GetFieldType (int i)=0
	Return the type of the field, using the constants defined in vtkType.h. More...

int	GetFieldIndex (char *name)
	Return the index of the specified query field. More...

virtual bool	NextRow ()=0
	Advance row, return false if past end. More...

virtual bool	IsActive ()=0
	Return true if the query is active (i.e. More...

bool	NextRow (vtkVariantArray *rowArray)
	Advance row, return false if past end. More...

virtual vtkVariant	DataValue (vtkIdType c)=0
	Return data in current row, field c. More...

virtual bool	HasError ()=0
	Returns true if an error is set, otherwise false. More...

virtual const char *	GetLastErrorText ()=0
	Get the last error text from the query. More...

virtual void	SetCaseSensitiveFieldNames (bool)
	Many databases do not preserve case in field names. More...

virtual bool	GetCaseSensitiveFieldNames ()

virtual void	CaseSensitiveFieldNamesOn ()

virtual void	CaseSensitiveFieldNamesOff ()

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

bool	GetDebug ()
	Get the value of the debug flag. More...

void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...

virtual void	Modified ()
	Update the modification time for this object. More...

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time. More...

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)

vtkCommand *	GetCommand (unsigned long tag)

void	RemoveObserver (vtkCommand *)

void	RemoveObservers (unsigned long event, vtkCommand *)

void	RemoveObservers (const char event, vtkCommand )

int	HasObserver (unsigned long event, vtkCommand *)

int	HasObserver (const char event, vtkCommand )

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	HasObserver (const char *event)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...

int	InvokeEvent (const char event, void callData)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

virtual void	Delete ()
	Delete a VTK object. More...

virtual void	FastDelete ()
	Delete a reference to this object. More...

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream. More...

virtual void	PrintSelf (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object). More...

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object). More...

int	GetReferenceCount ()
	Return the current reference count of this object. More...

void	SetReferenceCount (int)
	Sets the reference count. More...

void	PrintRevisions (ostream &)
	Legacy. More...

Static Public Member Functions
static int	IsTypeOf (const char *type)

static vtkRowQuery *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkRowQuery ()

	~vtkRowQuery ()

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)
	These methods allow a command to exclusively grab all events. More...

void	InternalReleaseFocus ()

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
bool	CaseSensitiveFieldNames

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

abstract interface for queries that return row-oriented results.

The abstract superclass of query classes that return row-oriented (table) results. A subclass will provide database-specific query parameters and implement the vtkRowQuery API to return query results:

Execute() - Execute the query. No results need to be retrieved at this point, unless you are performing caching.

GetNumberOfFields() - After Execute() is performed, returns the number of fields in the query results.

GetFieldName() - The name of the field at an index.

GetFieldType() - The data type of the field at an index.

NextRow() - Advances the query results by one row, and returns whether there are more rows left in the query.

DataValue() - Extract a single data value from the current row.

Thanks:: Thanks to Andrew Wilson from Sandia National Laboratories for his work on the database classes.

See also: vtkRowQueryToTable

Definition at line 62 of file vtkRowQuery.h.

Member Typedef Documentation

◆ Superclass

typedef vtkObject vtkRowQuery::Superclass

Definition at line 65 of file vtkRowQuery.h.

Constructor & Destructor Documentation

◆ vtkRowQuery()

vtkRowQuery::vtkRowQuery ( )

protected

◆ ~vtkRowQuery()

vtkRowQuery::~vtkRowQuery ( )

protected

Member Function Documentation

◆ IsTypeOf()

static int vtkRowQuery::IsTypeOf ( const char * type )

static

◆ IsA()

virtual int vtkRowQuery::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObjectBase.

Reimplemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, vtkSQLiteQuery, and vtkSQLQuery.

◆ SafeDownCast()

static vtkRowQuery * vtkRowQuery::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkRowQuery::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, vtkSQLiteQuery, and vtkSQLQuery.

◆ NewInstance()

vtkRowQuery * vtkRowQuery::NewInstance ( ) const

◆ PrintSelf()

void vtkRowQuery::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

virtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkObject.

Reimplemented in vtkSQLiteQuery, and vtkSQLQuery.

◆ Execute()

virtual bool vtkRowQuery::Execute ( )

pure virtual

Execute the query.

This must be performed before any field name or data access functions are used.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, vtkSQLiteQuery, and vtkSQLQuery.

◆ GetNumberOfFields()

virtual int vtkRowQuery::GetNumberOfFields ( )

pure virtual

The number of fields in the query result.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ GetFieldName()

virtual const char * vtkRowQuery::GetFieldName ( int i )

pure virtual

Return the name of the specified query field.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ GetFieldType()

virtual int vtkRowQuery::GetFieldType ( int i )

pure virtual

Return the type of the field, using the constants defined in vtkType.h.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ GetFieldIndex()

int vtkRowQuery::GetFieldIndex ( char * name )

Return the index of the specified query field.

Uses GetNumberOfFields() and GetFieldName() to match field name.

◆ NextRow() [1/2]

virtual bool vtkRowQuery::NextRow ( )

pure virtual

Advance row, return false if past end.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ IsActive()

virtual bool vtkRowQuery::IsActive ( )

pure virtual

Return true if the query is active (i.e.

execution was successful and results are ready to be fetched). Returns false on error or inactive query.

Implemented in vtkSQLQuery.

◆ NextRow() [2/2]

bool vtkRowQuery::NextRow ( vtkVariantArray * rowArray )

Advance row, return false if past end.

Also, fill array with row values.

◆ DataValue()

virtual vtkVariant vtkRowQuery::DataValue ( vtkIdType c )

pure virtual

Return data in current row, field c.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ HasError()

virtual bool vtkRowQuery::HasError ( )

pure virtual

Returns true if an error is set, otherwise false.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ GetLastErrorText()

virtual const char * vtkRowQuery::GetLastErrorText ( )

pure virtual

Get the last error text from the query.

Implemented in vtkMySQLQuery, vtkODBCQuery, vtkPostgreSQLQuery, and vtkSQLiteQuery.

◆ SetCaseSensitiveFieldNames()

virtual void vtkRowQuery::SetCaseSensitiveFieldNames ( bool )

virtual

Many databases do not preserve case in field names.

This can cause GetFieldIndex to fail if you search for a field named someFieldName when the database actually stores it as SOMEFIELDNAME. This ivar controls whether GetFieldIndex() expects field names to be case-sensitive. The default is OFF, i.e. case is not preserved.

◆ GetCaseSensitiveFieldNames()

virtual bool vtkRowQuery::GetCaseSensitiveFieldNames ( )

virtual

◆ CaseSensitiveFieldNamesOn()

virtual void vtkRowQuery::CaseSensitiveFieldNamesOn ( )

virtual

◆ CaseSensitiveFieldNamesOff()

virtual void vtkRowQuery::CaseSensitiveFieldNamesOff ( )

virtual

Member Data Documentation

◆ CaseSensitiveFieldNames

bool vtkRowQuery::CaseSensitiveFieldNames

protected

Definition at line 147 of file vtkRowQuery.h.

The documentation for this class was generated from the following file:

dox/IO/SQL/vtkRowQuery.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkRowQuery()

◆ ~vtkRowQuery()

Member Function Documentation

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ Execute()

◆ GetNumberOfFields()

◆ GetFieldName()

◆ GetFieldType()

◆ GetFieldIndex()

◆ NextRow() [1/2]

◆ IsActive()

◆ NextRow() [2/2]

◆ DataValue()

◆ HasError()

◆ GetLastErrorText()

◆ SetCaseSensitiveFieldNames()

◆ GetCaseSensitiveFieldNames()

◆ CaseSensitiveFieldNamesOn()

◆ CaseSensitiveFieldNamesOff()

Member Data Documentation

◆ CaseSensitiveFieldNames