#include <itkDOMReader.h>

Detailed Description

template<typename TOutput>
class itk::DOMReader< TOutput >

Class to read an ITK object from an XML file or a DOM object, using the DOM APIs.

End-users need to derive from this class to implement readers for user objects. In subclasses, users need to provide an implementation for the virtual functions GenerateData(-,-).

This class performs similar functions as the XMLReader - both provide the base for handling object reading from an XML source. The difference is that, readers derived from this class perform object reading using the easy-to-use DOM APIs, while XMLReader-based readers use the more error-prone SAX (Simple API for XML) APIs.

Internally, this class first implicitly creates an intermediate DOM object from the input XML file using the DOMNodeXMLReader, then performs output object generation by pulling information from the DOM object.

Note: Though this class behaves similar to ProcessObject, it is not derived from ProcessObject. This is because many user objects to be read, e.g., registrations, transforms, optimizers, and so on, are not objects of type DataObject, thus this class cannot be connected to an ITK process pipeline.

The following code snippet demonstrates how to use a DOM-based reader that is derived from this class:

itk::MyObjectType::Pointer output_object;
const char* input_xml_file_name = ...
auto reader = itk::MyObjectDOMReader::New();
reader->SetFileName( input_xml_file_name );
reader->Update();
output_object = reader->GetOutput();

See also: XMLReader; DOMNodeXMLReader; DOMNode

Definition at line 65 of file itkDOMReader.h.

Inheritance diagram for itk::DOMReader< TOutput >:

Collaboration diagram for itk::DOMReader< TOutput >:

Public Types
using	DOMNodePointer = typename DOMNodeType::Pointer

using	DOMNodeType = DOMNode

using	LoggerPointer = typename LoggerType::Pointer

using	LoggerType = Logger

using	OutputType = TOutput

using	Self = DOMReader

Public Types inherited from itk::Object
using	ConstPointer = SmartPointer< const Self >

using	Pointer = SmartPointer< Self >

using	Self = Object

using	Superclass = LightObject

Public Types inherited from itk::LightObject
using	ConstPointer = SmartPointer< const Self >

using	Pointer = SmartPointer< Self >

using	Self = LightObject

Public Member Functions
virtual const char *	GetFileName () const

virtual LoggerType *	GetLogger () const

const char *	GetNameOfClass () const override

OutputType *	GetOutput ()

const OutputType *	GetOutput () const

virtual void	SetFileName (const char *_arg)

virtual void	SetOutput (OutputType *output)

virtual void	Update ()

void	Update (const DOMNodeType inputdom, const void userdata=nullptr)

Public Member Functions inherited from itk::Object
unsigned long	AddObserver (const EventObject &event, Command *cmd) const

unsigned long	AddObserver (const EventObject &event, std::function< void(const EventObject &)> function) const

LightObject::Pointer	CreateAnother () const override

virtual void	DebugOff () const

virtual void	DebugOn () const

Command *	GetCommand (unsigned long tag)

bool	GetDebug () const

MetaDataDictionary &	GetMetaDataDictionary ()

const MetaDataDictionary &	GetMetaDataDictionary () const

virtual ModifiedTimeType	GetMTime () const

const char *	GetNameOfClass () const override

virtual const TimeStamp &	GetTimeStamp () const

bool	HasObserver (const EventObject &event) const

void	InvokeEvent (const EventObject &)

void	InvokeEvent (const EventObject &) const

virtual void	Modified () const

void	Register () const override

void	RemoveAllObservers ()

void	RemoveObserver (unsigned long tag) const

void	SetDebug (bool debugFlag) const

void	SetReferenceCount (int) override

void	UnRegister () const noexcept override

void	SetMetaDataDictionary (const MetaDataDictionary &rhs)

void	SetMetaDataDictionary (MetaDataDictionary &&rrhs)

virtual void	SetObjectName (std::string _arg)

virtual const std::string &	GetObjectName () const

Public Member Functions inherited from itk::LightObject
Pointer	Clone () const

virtual Pointer	CreateAnother () const

virtual void	Delete ()

virtual const char *	GetNameOfClass () const

virtual int	GetReferenceCount () const

void	Print (std::ostream &os, Indent indent=0) const

virtual void	Register () const

virtual void	SetReferenceCount (int)

virtual void	UnRegister () const noexcept

Protected Member Functions
	DOMReader ()

virtual void	GenerateData (const DOMNodeType inputdom, const void userdata)=0

Protected Member Functions inherited from itk::Object
	Object ()

bool	PrintObservers (std::ostream &os, Indent indent) const

void	PrintSelf (std::ostream &os, Indent indent) const override

virtual void	SetTimeStamp (const TimeStamp &timeStamp)

	~Object () override

Protected Member Functions inherited from itk::LightObject
virtual LightObject::Pointer	InternalClone () const

	LightObject ()

virtual void	PrintHeader (std::ostream &os, Indent indent) const

virtual void	PrintSelf (std::ostream &os, Indent indent) const

virtual void	PrintTrailer (std::ostream &os, Indent indent) const

virtual	~LightObject ()

Private Member Functions

virtual void	SetIntermediateDOM (DOMNodeType *_arg)

virtual DOMNodeType *	GetModifiableIntermediateDOM ()

Private Attributes
std::string	m_FileName {}

DOMNodePointer	m_IntermediateDOM {}

LoggerPointer	m_Logger {}

OutputType *	m_Output {}

LightObject::Pointer	m_OutputHolder {}

Additional Inherited Members
Static Public Member Functions inherited from itk::Object
static bool	GetGlobalWarningDisplay ()

static void	GlobalWarningDisplayOff ()

static void	GlobalWarningDisplayOn ()

static Pointer	New ()

static void	SetGlobalWarningDisplay (bool val)

Static Public Member Functions inherited from itk::LightObject
static void	BreakOnError ()

static Pointer	New ()

Protected Attributes inherited from itk::LightObject
std::atomic< int >	m_ReferenceCount {}

Member Typedef Documentation

◆ DOMNodePointer

template<typename TOutput >

using itk::DOMReader< TOutput >::DOMNodePointer = typename DOMNodeType::Pointer

Definition at line 79 of file itkDOMReader.h.

◆ DOMNodeType

template<typename TOutput >

using itk::DOMReader< TOutput >::DOMNodeType = DOMNode

Definition at line 78 of file itkDOMReader.h.

◆ LoggerPointer

template<typename TOutput >

using itk::DOMReader< TOutput >::LoggerPointer = typename LoggerType::Pointer

Definition at line 82 of file itkDOMReader.h.

◆ LoggerType

template<typename TOutput >

using itk::DOMReader< TOutput >::LoggerType = Logger

Definition at line 81 of file itkDOMReader.h.

◆ OutputType

template<typename TOutput >

using itk::DOMReader< TOutput >::OutputType = TOutput

Definition at line 76 of file itkDOMReader.h.

◆ Self

template<typename TOutput >

using itk::DOMReader< TOutput >::Self = DOMReader

Standard class type aliases.

Definition at line 72 of file itkDOMReader.h.

Constructor & Destructor Documentation

◆ DOMReader()

template<typename TOutput >

itk::DOMReader< TOutput >::DOMReader ( )

protected

Member Function Documentation

◆ GenerateData()

template<typename TOutput >

virtual void itk::DOMReader< TOutput >::GenerateData	(	const DOMNodeType *	inputdom,
		const void *	userdata
	)

protectedpure virtual

Function to be implemented in subclasses. It is called automatically when update functions are performed. It should fill the contents of the output object by pulling information from the intermediate DOM object. Some derived readers may accept an incomplete DOM object during the reading process, in those cases the optional argument 'userdata' can be used to provide the missed information.

◆ GetFileName()

template<typename TOutput >

virtual const char * itk::DOMReader< TOutput >::GetFileName ( ) const

virtual

Get the input XML filename.

◆ GetLogger()

template<typename TOutput >

virtual LoggerType * itk::DOMReader< TOutput >::GetLogger ( ) const

virtual

Return the internal logger so that users can change the output format or add/remove logging destinations.

◆ GetModifiableIntermediateDOM()

template<typename TOutput >

virtual DOMNodeType * itk::DOMReader< TOutput >::GetModifiableIntermediateDOM ( )

privatevirtual

Get/Set the intermediate DOM object.

◆ GetNameOfClass()

template<typename TOutput >

const char * itk::DOMReader< TOutput >::GetNameOfClass ( ) const

overridevirtual

See also: LightObject::GetNameOfClass()

Reimplemented from itk::Object.

◆ GetOutput() [1/2]

template<typename TOutput >

OutputType * itk::DOMReader< TOutput >::GetOutput ( )

Get the output object for full access.

◆ GetOutput() [2/2]

template<typename TOutput >

const OutputType * itk::DOMReader< TOutput >::GetOutput ( ) const

Get the output object for read-only access.

◆ SetFileName()

template<typename TOutput >

virtual void itk::DOMReader< TOutput >::SetFileName ( const char * _arg )

virtual

Set the input XML filename.

◆ SetIntermediateDOM()

template<typename TOutput >

virtual void itk::DOMReader< TOutput >::SetIntermediateDOM ( DOMNodeType * _arg )

privatevirtual

Get/Set the intermediate DOM object.

◆ SetOutput()

template<typename TOutput >

virtual void itk::DOMReader< TOutput >::SetOutput ( OutputType * output )

virtual

The output object will be created automatically, but the user can appoint a user object as the output by calling this function.

◆ Update() [1/2]

template<typename TOutput >

virtual void itk::DOMReader< TOutput >::Update ( )

virtual

Function called by end-users to generate the output object from the input XML file.

◆ Update() [2/2]

template<typename TOutput >

void itk::DOMReader< TOutput >::Update	(	const DOMNodeType *	inputdom,
		const void *	userdata = `nullptr`
	)

Function called by Update() or end-users to generate the output object from a DOM object. Some derived readers may accept an incomplete DOM object during the reading process, in those cases the optional argument 'userdata' can be used to provide the missed information.

Member Data Documentation

◆ m_FileName

template<typename TOutput >

std::string itk::DOMReader< TOutput >::m_FileName {}

private

Variable to hold the input XML file name.

Definition at line 145 of file itkDOMReader.h.

◆ m_IntermediateDOM

template<typename TOutput >

DOMNodePointer itk::DOMReader< TOutput >::m_IntermediateDOM {}

private

Variable to hold the intermediate DOM object.

Definition at line 154 of file itkDOMReader.h.

◆ m_Logger

template<typename TOutput >

LoggerPointer itk::DOMReader< TOutput >::m_Logger {}

mutableprivate

Variable to log various messages during the reading process.

Definition at line 157 of file itkDOMReader.h.

◆ m_Output

template<typename TOutput >

OutputType* itk::DOMReader< TOutput >::m_Output {}

private

Variable to hold the output object, created internally or supplied by the user.

Definition at line 148 of file itkDOMReader.h.

◆ m_OutputHolder

template<typename TOutput >

LightObject::Pointer itk::DOMReader< TOutput >::m_OutputHolder {}

private

Variable to hold the output object if it is a smart object.

Definition at line 151 of file itkDOMReader.h.

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

itkDOMReader.h

Detailed Description

Public Types

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Member Typedef Documentation

◆ DOMNodePointer

◆ DOMNodeType

◆ LoggerPointer

◆ LoggerType

◆ OutputType

◆ Self

Constructor & Destructor Documentation

◆ DOMReader()

Member Function Documentation

◆ GenerateData()

◆ GetFileName()

◆ GetLogger()

◆ GetModifiableIntermediateDOM()

◆ GetNameOfClass()

◆ GetOutput() [1/2]

◆ GetOutput() [2/2]

◆ SetFileName()

◆ SetIntermediateDOM()

◆ SetOutput()

◆ Update() [1/2]

◆ Update() [2/2]

Member Data Documentation

◆ m_FileName

◆ m_IntermediateDOM

◆ m_Logger

◆ m_Output

◆ m_OutputHolder