User abstraction class to manipulate JSON elements within a document. More...

#include <Elements.h>

Public Types
typedef Handle_t::Elt_t	Elt_t
	Simplification type declarations. More...

Public Member Functions
	Element (const Handle_t &e)
	Constructor from JsonElement handle. More...

	Element (const Element &e)
	Constructor from JsonElement handle. More...

Element &	operator= (const Element &c)
	Assignment operator. More...

Element &	operator= (Handle_t handle)
	Assignment operator. More...

	operator bool () const
	operator bool: check handle validity More...

bool	operator! () const
	operator NOT: check handle validity More...

	operator Handle_t () const
	Automatic conversion to DOM element handle. More...

	operator Elt_t () const
	Automatic conversion to JsonElement pointer. More...

Elt_t	ptr () const
	Access to JsonElement pointer. More...

std::string	tag () const
	Access the tag name of this element. More...

const char *	tagName () const
	Access the tag name of this element. More...

std::string	text () const
	Access the tag name of this element. More...

bool	hasAttr (const char *name) const
	Check for the existence of a named attribute. More...

template<class T >
T	attr (const char *tag_value) const
	Access attribute with implicit return type conversion. More...

const char *	attr_name (const Attribute a) const
	Access attribute name (throws exception if not present) More...

const char *	attr_value (const Attribute a) const
	Access attribute value by the attribute (throws exception if not present) More...

size_t	numChildren (const char *tag_value, bool exc=true) const
	Access the number of children of this element with a given tag name. More...

std::vector< Attribute >	attributes () const
	Retrieve a collection of all attributes of this element. More...

Attribute	getAttr (const char *name) const
	Access single attribute by its name. More...

Handle_t	child (const char *tag_value, bool except=true) const
	Access child by tag name. Thow an exception if required in case the child is not present. More...

bool	hasChild (const char *tag_value) const
	Check the existence of a child with a given tag name. More...

Public Attributes
Handle_t	m_element
	The underlying object holding the JsonElement pointer. More...

Detailed Description

User abstraction class to manipulate JSON elements within a document.

User class encapsulating a DOM element using the Handle_t helper. This is the main class we interact with when analysing the json documents for constructing sub-detectors etc.

Author: M.Frank

Version: 1.0

Definition at line 358 of file Elements.h.

Member Typedef Documentation

◆ Elt_t

typedef Handle_t::Elt_t dd4hep::json::Element::Elt_t

Simplification type declarations.

Definition at line 361 of file Elements.h.

Constructor & Destructor Documentation

◆ Element() [1/2]

dd4hep::json::Element::Element ( const Handle_t & e )

inline

Constructor from JsonElement handle.

Definition at line 367 of file Elements.h.

◆ Element() [2/2]

dd4hep::json::Element::Element ( const Element & e )

inline

Constructor from JsonElement handle.

Definition at line 369 of file Elements.h.

Member Function Documentation

◆ attr()

template<class T >

T dd4hep::json::Element::attr ( const char * tag_value ) const

inline

Access attribute with implicit return type conversion.

Definition at line 400 of file Elements.h.

◆ attr_name()

const char* dd4hep::json::Element::attr_name ( const Attribute a ) const

inline

Access attribute name (throws exception if not present)

Definition at line 403 of file Elements.h.

◆ attr_value()

const char* dd4hep::json::Element::attr_value ( const Attribute a ) const

inline

Access attribute value by the attribute (throws exception if not present)

Definition at line 406 of file Elements.h.

◆ attributes()

std::vector<Attribute> dd4hep::json::Element::attributes ( ) const

inline

Retrieve a collection of all attributes of this element.

Definition at line 412 of file Elements.h.

◆ child()

Handle_t dd4hep::json::Element::child	(	const char *	tag_value,
		bool	except = `true`
	)		const

inline

Access child by tag name. Thow an exception if required in case the child is not present.

Definition at line 417 of file Elements.h.

◆ getAttr()

Attribute Element::getAttr ( const char * name ) const

Access single attribute by its name.

Definition at line 378 of file Elements.cpp.

◆ hasAttr()

bool dd4hep::json::Element::hasAttr ( const char * name ) const

inline

Check for the existence of a named attribute.

Definition at line 398 of file Elements.h.

◆ hasChild()

bool dd4hep::json::Element::hasChild ( const char * tag_value ) const

inline

Check the existence of a child with a given tag name.

Definition at line 420 of file Elements.h.

◆ numChildren()

size_t dd4hep::json::Element::numChildren	(	const char *	tag_value,
		bool	exc = `true`
	)		const

inline

Access the number of children of this element with a given tag name.

Definition at line 409 of file Elements.h.

◆ operator bool()

dd4hep::json::Element::operator bool ( ) const

inline

operator bool: check handle validity

Definition at line 382 of file Elements.h.

◆ operator Elt_t()

dd4hep::json::Element::operator Elt_t ( ) const

inline

Automatic conversion to JsonElement pointer.

Definition at line 388 of file Elements.h.

◆ operator Handle_t()

dd4hep::json::Element::operator Handle_t ( ) const

inline

Automatic conversion to DOM element handle.

Definition at line 386 of file Elements.h.

◆ operator!()

bool dd4hep::json::Element::operator! ( ) const

inline

operator NOT: check handle validity

Definition at line 384 of file Elements.h.

◆ operator=() [1/2]

Element& dd4hep::json::Element::operator= ( const Element & c )

inline

Assignment operator.

Definition at line 372 of file Elements.h.

◆ operator=() [2/2]

Element& dd4hep::json::Element::operator= ( Handle_t handle )

inline

Assignment operator.

Definition at line 377 of file Elements.h.

◆ ptr()

Elt_t dd4hep::json::Element::ptr ( ) const

inline

Access to JsonElement pointer.

Definition at line 390 of file Elements.h.

◆ tag()

std::string dd4hep::json::Element::tag ( ) const

inline

Access the tag name of this element.

Definition at line 392 of file Elements.h.

◆ tagName()

const char* dd4hep::json::Element::tagName ( ) const

inline

Access the tag name of this element.

Definition at line 394 of file Elements.h.

◆ text()

std::string dd4hep::json::Element::text ( ) const

inline

Access the tag name of this element.

Definition at line 396 of file Elements.h.

Member Data Documentation

◆ m_element

Handle_t dd4hep::json::Element::m_element

The underlying object holding the JsonElement pointer.

Definition at line 364 of file Elements.h.

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

DDCore/include/JSON/Elements.h
DDCore/src/JSON/Elements.cpp

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Typedef Documentation

◆ Elt_t

Constructor & Destructor Documentation

◆ Element() [1/2]

◆ Element() [2/2]

Member Function Documentation

◆ attr()

◆ attr_name()

◆ attr_value()

◆ attributes()

◆ child()

◆ getAttr()

◆ hasAttr()

◆ hasChild()

◆ numChildren()

◆ operator bool()

◆ operator Elt_t()

◆ operator Handle_t()

◆ operator!()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ ptr()

◆ tag()

◆ tagName()

◆ text()

Member Data Documentation

◆ m_element