itk::DOMReader< TOutput > Class Template Reference

#include <itkDOMReader.h>

Inheritance diagram for itk::DOMReader< TOutput >:

Collaboration diagram for itk::DOMReader< TOutput >:

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 demontrates how to use a DOM-based reader that is derived from this class:

*     itk::MyObjectType::Pointer output_object;
*     const char* input_xml_file_name = ...
*     itk::MyObjectDOMReader::Pointer 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.

Public Types
typedef DOMNodeType::Pointer	DOMNodePointer
typedef DOMNode	DOMNodeType
typedef LoggerType::Pointer	LoggerPointer
typedef Logger	LoggerType
typedef TOutput	OutputType
typedef DOMReader	Self
Public Types inherited from itk::Object
typedef SmartPointer< const Self >	ConstPointer
typedef SmartPointer< Self >	Pointer
typedef Object	Self
typedef LightObject	Superclass
Public Types inherited from itk::LightObject
typedef SmartPointer< const Self >	ConstPointer
typedef SmartPointer< Self >	Pointer
typedef LightObject	Self

Public Member Functions
virtual const char *	GetFileName () const
virtual LoggerType *	GetLogger () const
virtual const char *	GetNameOfClass () const
OutputType *	GetOutput ()
const OutputType *	GetOutput () const
virtual void	SetFileName (const char *_arg)
virtual void	SetOutput (OutputType *output)
void	Update (const DOMNodeType *inputdom, const void *userdata=nullptr)
virtual void	Update ()
Public Member Functions inherited from itk::Object
unsigned long	AddObserver (const EventObject &event, Command *)
unsigned long	AddObserver (const EventObject &event, Command *) const
virtual 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
virtual const TimeStamp &	GetTimeStamp () const
bool	HasObserver (const EventObject &event) const
void	InvokeEvent (const EventObject &)
void	InvokeEvent (const EventObject &) const
virtual void	Modified () const
virtual void	Register () const override
void	RemoveAllObservers ()
void	RemoveObserver (unsigned long tag)
void	SetDebug (bool debugFlag) const
void	SetMetaDataDictionary (const MetaDataDictionary &rhs)
virtual void	SetReferenceCount (int) override
virtual void	UnRegister () const noexceptoverride
virtual void	SetObjectName (std::string _arg)
virtual const std::string &	GetObjectName () const
Public Member Functions inherited from itk::LightObject
virtual void	Delete ()
virtual int	GetReferenceCount () const
	itkCloneMacro (Self)
void	Print (std::ostream &os, Indent indent=0) const

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
virtual void	PrintSelf (std::ostream &os, Indent indent) const override
virtual void	SetTimeStamp (const TimeStamp &time)
virtual	~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	PrintTrailer (std::ostream &os, Indent indent) const
virtual	~LightObject ()

Private Member Functions
virtual void	SetIntermediateDOM (DOMNodeType *_arg)
virtual DOMNodeType *	GetModifiableIntermediateDOM ()
virtual const DOMNodeType *	GetIntermediateDOM () const

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 flag)
Static Public Member Functions inherited from itk::LightObject
static void	BreakOnError ()
static Pointer	New ()
Protected Attributes inherited from itk::LightObject
AtomicInt< int >	m_ReferenceCount

Member Typedef Documentation

template<typename TOutput >

typedef DOMNodeType::Pointer itk::DOMReader< TOutput >::DOMNodePointer

Definition at line 77 of file itkDOMReader.h.

template<typename TOutput >

typedef DOMNode itk::DOMReader< TOutput >::DOMNodeType

Definition at line 76 of file itkDOMReader.h.

template<typename TOutput >

typedef LoggerType::Pointer itk::DOMReader< TOutput >::LoggerPointer

Definition at line 80 of file itkDOMReader.h.

template<typename TOutput >

typedef Logger itk::DOMReader< TOutput >::LoggerType

Definition at line 79 of file itkDOMReader.h.

template<typename TOutput >

typedef TOutput itk::DOMReader< TOutput >::OutputType

Definition at line 72 of file itkDOMReader.h.

template<typename TOutput >

typedef DOMReader itk::DOMReader< TOutput >::Self

Standard class typedefs.

Definition at line 70 of file itkDOMReader.h.

Constructor & Destructor Documentation

template<typename TOutput >

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

protected

Member Function Documentation

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.

template<typename TOutput >

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

virtual

Get the input XML filename.

template<typename TOutput >

virtual const DOMNodeType* itk::DOMReader< TOutput >::GetIntermediateDOM ( ) const

privatevirtual

Get/Set the intermediate DOM object.

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.

template<typename TOutput >

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

privatevirtual

Get/Set the intermediate DOM object.

template<typename TOutput >

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

virtual

Standard part of all itk objects.

Reimplemented from itk::Object.

template<typename TOutput >

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

(

)

Get the output object for full access.

template<typename TOutput >

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

(

)

const

Get the output object for read-only access.

template<typename TOutput >

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

virtual

Set the input XML filename.

template<typename TOutput >

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

privatevirtual

Get/Set the intermediate DOM object.

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.

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.

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.

Member Data Documentation

template<typename TOutput >

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

private

Variable to hold the input XML file name.

Definition at line 135 of file itkDOMReader.h.

template<typename TOutput >

DOMNodePointer itk::DOMReader< TOutput >::m_IntermediateDOM

private

Variable to hold the intermediate DOM object.

Definition at line 148 of file itkDOMReader.h.

template<typename TOutput >

LoggerPointer itk::DOMReader< TOutput >::m_Logger

mutableprivate

Variable to log various messages during the reading process.

Definition at line 151 of file itkDOMReader.h.

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 142 of file itkDOMReader.h.

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 145 of file itkDOMReader.h.

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

• itkDOMReader.h