\inmodule QtCore\reentrant More...

#include <qjsonobject.h>

Collaboration diagram for QJsonObject:

Classes
class	const_iterator
	\inmodule QtCore More...

class	iterator
	\inmodule QtCore\reentrant More...

Public Types
typedef iterator	Iterator
	Qt-style synonym for QJsonObject::iterator.

typedef const_iterator	ConstIterator
	Qt-style synonym for QJsonObject::const_iterator.

typedef QJsonValue	mapped_type
	Typedef for QJsonValue.

typedef QString	key_type
	Typedef for QString.

typedef qsizetype	size_type
	Typedef for qsizetype.

Public Member Functions
	QJsonObject ()
	Constructs an empty JSON object.

	QJsonObject (std::initializer_list< std::pair< QString, QJsonValue > > args)

	~QJsonObject ()
	Destroys the object.

	QJsonObject (const QJsonObject &other) noexcept
	Creates a copy of other.

QJsonObject &	operator= (const QJsonObject &other) noexcept
	Assigns other to this object.

	QJsonObject (QJsonObject &&other) noexcept

QJsonObject &	operator= (QJsonObject &&other) noexcept

void	swap (QJsonObject &other) noexcept

QVariantMap	toVariantMap () const
	Converts this object to a QVariantMap.

QVariantHash	toVariantHash () const
	Converts this object to a QVariantHash.

QStringList	keys () const
	Returns a list of all keys in this object.

qsizetype	size () const
	Returns the number of (key, value) pairs stored in the object.

qsizetype	count () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Same as size().

qsizetype	length () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Same as size().

bool	isEmpty () const
	Returns `true` if the object is empty.

QJsonValue	value (const QString &key) const
	Returns a QJsonValue representing the value for the key key.

QJsonValue	operator[] (const QString &key) const
	Returns a QJsonValue representing the value for the key key.

QJsonValueRef	operator[] (const QString &key)
	Returns a reference to the value for key.

QJsonValue	value (QStringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValue	value (QLatin1StringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValue	operator[] (QStringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValue	operator[] (QLatin1StringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValueRef	operator[] (QStringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValueRef	operator[] (QLatin1StringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

void	remove (const QString &key)
	Removes key from the object.

QJsonValue	take (const QString &key)
	Removes key from the object.

bool	contains (const QString &key) const
	Returns `true` if the object contains key key.

void	remove (QStringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

void	remove (QLatin1StringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValue	take (QStringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QJsonValue	take (QLatin1StringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

bool	contains (QStringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

bool	contains (QLatin1StringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

iterator	begin ()
	Returns an \l{STL-style iterators}{STL-style iterator} pointing to the first item in the object.

const_iterator	begin () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	constBegin () const
	Returns a const \l{STL-style iterators}{STL-style iterator} pointing to the first item in the object.

iterator	end ()
	Returns an \l{STL-style iterators}{STL-style iterator} pointing to the imaginary item after the last item in the object.

const_iterator	end () const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	constEnd () const
	Returns a const \l{STL-style iterators}{STL-style iterator} pointing to the imaginary item after the last item in the object.

iterator	erase (iterator it)
	Removes the (key, value) pair pointed to by the iterator it from the map, and returns an iterator to the next item in the map.

iterator	find (const QString &key)
	Returns an iterator pointing to the item with key key in the map.

const_iterator	find (const QString &key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	constFind (const QString &key) const
	Returns a const iterator pointing to the item with key key in the map.

iterator	insert (const QString &key, const QJsonValue &value)
	Inserts a new item with the key key and a value of value.

iterator	find (QStringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

iterator	find (QLatin1StringView key)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	find (QStringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	find (QLatin1StringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	constFind (QStringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const_iterator	constFind (QLatin1StringView key) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

iterator	insert (QStringView key, const QJsonValue &value)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

iterator	insert (QLatin1StringView key, const QJsonValue &value)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

bool	empty () const
	This function is provided for STL compatibility.

Static Public Member Functions
static QJsonObject	fromVariantMap (const QVariantMap &map)
	Converts the variant map map to a QJsonObject.

static QJsonObject	fromVariantHash (const QVariantHash &map)
	Converts the variant hash hash to a QJsonObject.

Friends
class	iterator

class	const_iterator

class	QJsonValue

class	QJsonDocument

class	QJsonPrivate::Value

class	QJsonValueConstRef

class	QJsonValueRef

class	QCborMap

Q_CORE_EXPORT bool	comparesEqual (const QJsonObject &lhs, const QJsonObject &rhs) noexcept

bool	comparesEqual (const QJsonObject &lhs, const QJsonValue &rhs) noexcept

bool	comparesEqual (const QJsonObject &lhs, const QJsonValueConstRef &rhs) noexcept

Q_CORE_EXPORT QDebug	operator<< (QDebug, const QJsonObject &)

Detailed Description

\inmodule QtCore

\reentrant

Since: 5.0

The QJsonObject class encapsulates a JSON object.

\compares equality \compareswith equality QJsonValue QJsonValueConstRef \endcompareswith

A JSON object is a list of key value pairs, where the keys are unique strings and the values are represented by a QJsonValue.

A QJsonObject can be converted to and from a QVariantMap. You can query the number of (key, value) pairs with size(), insert(), and remove() entries from it and iterate over its content using the standard C++ iterator pattern.

QJsonObject is an implicitly shared class, and shares the data with the document it has been created from as long as it is not being modified.

You can convert the object to and from text based JSON through QJsonDocument.

See also: {JSON Support in Qt}, {Saving and Loading a Game}

Definition at line 19 of file qjsonobject.h.

Member Typedef Documentation

◆ ConstIterator

QJsonObject::ConstIterator

Qt-style synonym for QJsonObject::const_iterator.

Definition at line 293 of file qjsonobject.h.

◆ Iterator

QJsonObject::Iterator

Qt-style synonym for QJsonObject::iterator.

Definition at line 292 of file qjsonobject.h.

◆ key_type

QJsonObject::key_type

Typedef for QString.

Provided for STL compatibility.

Definition at line 309 of file qjsonobject.h.

◆ mapped_type

QJsonObject::mapped_type

Typedef for QJsonValue.

Provided for STL compatibility.

Definition at line 308 of file qjsonobject.h.

◆ size_type

QJsonObject::size_type

Typedef for qsizetype.

Provided for STL compatibility.

Definition at line 310 of file qjsonobject.h.

Constructor & Destructor Documentation

◆ QJsonObject() [1/4]

QJsonObject::QJsonObject ( )

default

Constructs an empty JSON object.

See also: isEmpty()

◆ QJsonObject() [2/4]

QJsonObject::QJsonObject ( std::initializer_list< std::pair< QString, QJsonValue > > args )

Since: 5.4 Constructs a QJsonObject instance initialized from args initialization list. For example:
QJsonObject object

{

{"property1", 1},

{"property2", 2}

};

QJsonObject
\inmodule QtCore\reentrant
Definition qjsonobject.h:20

Definition at line 118 of file qjsonobject.cpp.

References arg, args, and insert().

Here is the call graph for this function:

◆ ~QJsonObject()

QJsonObject::~QJsonObject ( )

default

Destroys the object.

◆ QJsonObject() [3/4]

QJsonObject::QJsonObject ( const QJsonObject & other )

defaultnoexcept

Creates a copy of other.

Since QJsonObject is implicitly shared, the copy is shallow as long as the object does not get modified.

◆ QJsonObject() [4/4]

QJsonObject::QJsonObject ( QJsonObject && other )

noexcept

Since: 5.10

Move-constructs a QJsonObject from other.

Definition at line 137 of file qjsonobject.cpp.

References other().

Here is the call graph for this function:

Member Function Documentation

◆ begin() [1/2]

QJsonObject::iterator QJsonObject::begin ( )

inline

Returns an \l{STL-style iterators}{STL-style iterator} pointing to the first item in the object.

See also: constBegin(), end()

Definition at line 283 of file qjsonobject.h.

◆ begin() [2/2]

QJsonObject::const_iterator QJsonObject::begin ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 284 of file qjsonobject.h.

◆ constBegin()

QJsonObject::const_iterator QJsonObject::constBegin ( ) const

inline

Returns a const \l{STL-style iterators}{STL-style iterator} pointing to the first item in the object.

See also: begin(), constEnd()

Definition at line 285 of file qjsonobject.h.

◆ constEnd()

QJsonObject::const_iterator QJsonObject::constEnd ( ) const

inline

Returns a const \l{STL-style iterators}{STL-style iterator} pointing to the imaginary item after the last item in the object.

See also: constBegin(), end()

Definition at line 288 of file qjsonobject.h.

Referenced by checkBooleanOption(), QT_BEGIN_NAMESPACE::checkDocument(), QT_BEGIN_NAMESPACE::checkLocation(), getRealOption(), processOptions(), and processSceneOptions().

Here is the caller graph for this function:

◆ constFind() [1/3]

QJsonObject::const_iterator QJsonObject::constFind ( const QString & key ) const

Returns a const iterator pointing to the item with key key in the map.

If the map contains no item with key key, the function returns constEnd().

Definition at line 735 of file qjsonobject.cpp.

References constFind().

Referenced by checkBooleanOption(), QT_BEGIN_NAMESPACE::checkDocument(), QT_BEGIN_NAMESPACE::checkLocation(), constFind(), getRealOption(), processOptions(), and processSceneOptions().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ constFind() [2/3]

QJsonObject::const_iterator QJsonObject::constFind ( QLatin1StringView key ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 753 of file qjsonobject.cpp.

◆ constFind() [3/3]

QJsonObject::const_iterator QJsonObject::constFind ( QStringView key ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 744 of file qjsonobject.cpp.

◆ contains() [1/3]

bool QJsonObject::contains ( const QString & key ) const

Returns true if the object contains key key.

See also: insert(), remove(), take()

Definition at line 582 of file qjsonobject.cpp.

References contains().

Referenced by GeoRouteJsonParserEsri::GeoRouteJsonParserEsri(), contains(), and CategoryParser::parse().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ contains() [2/3]

bool QJsonObject::contains ( QLatin1StringView key ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 600 of file qjsonobject.cpp.

◆ contains() [3/3]

bool QJsonObject::contains ( QStringView key ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 591 of file qjsonobject.cpp.

◆ count()

qsizetype QJsonObject::count ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Same as size().

Definition at line 51 of file qjsonobject.h.

◆ empty()

bool QJsonObject::empty ( ) const

inline

This function is provided for STL compatibility.

It is equivalent to isEmpty(), returning true if the object is empty; otherwise returning false.

Definition at line 312 of file qjsonobject.h.

◆ end() [1/2]

QJsonObject::iterator QJsonObject::end ( )

inline

Returns an \l{STL-style iterators}{STL-style iterator} pointing to the imaginary item after the last item in the object.

See also: begin(), constEnd()

Definition at line 286 of file qjsonobject.h.

Referenced by keys(), and QGeoRouteParserOsrmV5Private::parseStep().

Here is the caller graph for this function:

◆ end() [2/2]

QJsonObject::const_iterator QJsonObject::end ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 287 of file qjsonobject.h.

◆ erase()

QJsonObject::iterator QJsonObject::erase ( QJsonObject::iterator it )

Removes the (key, value) pair pointed to by the iterator it from the map, and returns an iterator to the next item in the map.

See also: remove()

Definition at line 657 of file qjsonobject.cpp.

References it.

◆ find() [1/6]

QJsonObject::iterator QJsonObject::find ( const QString & key )

Returns an iterator pointing to the item with key key in the map.

If the map contains no item with key key, the function returns end().

Definition at line 674 of file qjsonobject.cpp.

References find().

Referenced by find(), and QGeoRouteParserOsrmV5Private::parseStep().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ find() [2/6]

QJsonObject::const_iterator QJsonObject::find ( const QString & key ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 295 of file qjsonobject.h.

◆ find() [3/6]

QJsonObject::iterator QJsonObject::find ( QLatin1StringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 692 of file qjsonobject.cpp.

◆ find() [4/6]

QJsonObject::const_iterator QJsonObject::find ( QLatin1StringView key ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 301 of file qjsonobject.h.

◆ find() [5/6]

QJsonObject::iterator QJsonObject::find ( QStringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 683 of file qjsonobject.cpp.

◆ find() [6/6]

QJsonObject::const_iterator QJsonObject::find ( QStringView key ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 300 of file qjsonobject.h.

◆ fromVariantHash()

QJsonObject QJsonObject::fromVariantHash ( const QVariantHash & hash )

static

Converts the variant hash hash to a QJsonObject.

Since: 5.5

The keys in hash will be used as the keys in the JSON object, and the QVariant values will be converted to JSON values.

Note: Conversion from \l QVariant is not completely lossless. Please see the documentation in QJsonValue::fromVariant() for more information.

See also: fromVariantMap(), toVariantHash(), QJsonValue::fromVariant()

Definition at line 204 of file qjsonobject.cpp.

References QHash< QString, QVariant >::const_iterator, QJsonValue::fromVariant(), hash, insert(), and it.

Referenced by QJsonDocument::fromVariant(), and QJsonValue::fromVariant().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ fromVariantMap()

QJsonObject QJsonObject::fromVariantMap ( const QVariantMap & map )

static

Converts the variant map map to a QJsonObject.

The keys in map will be used as the keys in the JSON object, and the QVariant values will be converted to JSON values.

Note: Conversion from \l QVariant is not completely lossless. Please see the documentation in QJsonValue::fromVariant() for more information.

See also: fromVariantHash(), toVariantMap(), QJsonValue::fromVariant()

Definition at line 175 of file qjsonobject.cpp.

References map, and QJsonPrivate::Variant::toJsonObject().

Referenced by QJsonDocument::fromVariant(), and QJsonValue::fromVariant().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ insert() [1/3]

QJsonObject::iterator QJsonObject::insert	(	const QString &	key,
		const QJsonValue &	value )

Inserts a new item with the key key and a value of value.

If there is already an item with the key key, then that item's value is replaced with value.

Returns an iterator pointing to the inserted item.

If the value is QJsonValue::Undefined, it will cause the key to get removed from the object. The returned iterator will then point to end().

See also: remove(), take(), QJsonObject::iterator, end()

Definition at line 422 of file qjsonobject.cpp.

References insert().

Referenced by QJsonObject(), V4CommandHandler::addBody(), V4CommandHandler::addCommand(), V4CommandHandler::addRequestSequence(), V4CommandHandler::addRunning(), V4CommandHandler::addSuccess(), V4CommandHandler::createErrorResponse(), QV4DebuggerAgent::debuggerPaused(), exportGeometryCollection(), fromVariantHash(), BreakPointHandler::handleRemoveBreakpoint(), BreakPointHandler::handleSetBreakpoint(), insert(), QV4DataCollector::lookupRef(), QQmlNativeDebugServiceImpl::messageReceived(), QmlLsp::messageToDiagnostic_helper(), QGtk3Json::save(), setError(), QmlLsp::QQmlLanguageServer::setupCapabilities(), JsonOutput::toJson(), and toRef().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ insert() [2/3]

QJsonObject::iterator QJsonObject::insert	(	QLatin1StringView	key,
		const QJsonValue &	value )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 440 of file qjsonobject.cpp.

◆ insert() [3/3]

QJsonObject::iterator QJsonObject::insert	(	QStringView	key,
		const QJsonValue &	value )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 431 of file qjsonobject.cpp.

◆ isEmpty()

bool QJsonObject::isEmpty ( ) const

Returns true if the object is empty.

This is the same as size() == 0.

See also: size()

Definition at line 257 of file qjsonobject.cpp.

References QCborContainerPrivate::elements, and QList< T >::isEmpty().

Referenced by QV4DebuggerAgent::debuggerPaused(), V4CommandHandler::handle(), importImp(), processOptions(), and processSceneOptions().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ keys()

QStringList QJsonObject::keys ( ) const

Returns a list of all keys in this object.

The list is sorted alphabetically.

Definition at line 233 of file qjsonobject.cpp.

References QCborContainerPrivate::elements, end(), i, keys(), QList< T >::size(), and QCborContainerPrivate::stringAt().

Referenced by keys().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ length()

qsizetype QJsonObject::length ( ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Same as size().

Definition at line 52 of file qjsonobject.h.

◆ operator=() [1/2]

QJsonObject & QJsonObject::operator= ( const QJsonObject & other )

defaultnoexcept

Assigns other to this object.

◆ operator=() [2/2]

QJsonObject & QJsonObject::operator= ( QJsonObject && other )

inlinenoexcept

Since: 5.10

Move-assigns other to this object.

Definition at line 33 of file qjsonobject.h.

References other(), and swap().

Here is the call graph for this function:

◆ operator[]() [1/6]

QJsonValueRef QJsonObject::operator[] ( const QString & key )

Returns a reference to the value for key.

If there is no value with key key in the object, one is created with a QJsonValue::Null value and then returned.

The return value is of type QJsonValueRef, a helper class for QJsonArray and QJsonObject. When you get an object of type QJsonValueRef, you can use it as if it were a reference to a QJsonValue. If you assign to it, the assignment will apply to the element in the QJsonArray or QJsonObject from which you got the reference.

See also: value()

Definition at line 366 of file qjsonobject.cpp.

◆ operator[]() [2/6]

QJsonValue QJsonObject::operator[] ( const QString & key ) const

Returns a QJsonValue representing the value for the key key.

This does the same as value().

The returned QJsonValue is QJsonValue::Undefined if the key does not exist.

See also: value(), QJsonValue, QJsonValue::isUndefined()

Definition at line 334 of file qjsonobject.cpp.

◆ operator[]() [3/6]

QJsonValueRef QJsonObject::operator[] ( QLatin1StringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 384 of file qjsonobject.cpp.

◆ operator[]() [4/6]

QJsonValue QJsonObject::operator[] ( QLatin1StringView key ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 61 of file qjsonobject.h.

◆ operator[]() [5/6]

QJsonValueRef QJsonObject::operator[] ( QStringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 375 of file qjsonobject.cpp.

◆ operator[]() [6/6]

QJsonValue QJsonObject::operator[] ( QStringView key ) const

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 60 of file qjsonobject.h.

◆ remove() [1/3]

void QJsonObject::remove ( const QString & key )

Removes key from the object.

See also: insert(), take()

Definition at line 485 of file qjsonobject.cpp.

References remove().

Referenced by remove().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ remove() [2/3]

void QJsonObject::remove ( QLatin1StringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 503 of file qjsonobject.cpp.

◆ remove() [3/3]

void QJsonObject::remove ( QStringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 494 of file qjsonobject.cpp.

◆ size()

qsizetype QJsonObject::size ( ) const

Returns the number of (key, value) pairs stored in the object.

Definition at line 247 of file qjsonobject.cpp.

References QCborContainerPrivate::elements, and QList< T >::size().

Here is the call graph for this function:

◆ swap()

void QJsonObject::swap ( QJsonObject & other )

inlinenoexcept

Since: 5.10

Swaps the object other with this. This operation is very fast and never fails.

Definition at line 39 of file qjsonobject.h.

References o, and other().

Here is the call graph for this function:

◆ take() [1/3]

QJsonValue QJsonObject::take ( const QString & key )

Removes key from the object.

Returns a QJsonValue containing the value referenced by key. If key was not contained in the object, the returned QJsonValue is QJsonValue::Undefined.

See also: insert(), remove(), QJsonValue

Definition at line 534 of file qjsonobject.cpp.

References take().

Referenced by take().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ take() [2/3]

QJsonValue QJsonObject::take ( QLatin1StringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 552 of file qjsonobject.cpp.

◆ take() [3/3]

QJsonValue QJsonObject::take ( QStringView key )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 543 of file qjsonobject.cpp.

◆ toVariantHash()

QVariantHash QJsonObject::toVariantHash ( ) const

Converts this object to a QVariantHash.

Since: 5.5

Returns the created hash.

See also: toVariantMap()

Definition at line 222 of file qjsonobject.cpp.

References QCborMap::fromJsonObject().

Here is the call graph for this function:

◆ toVariantMap()

QVariantMap QJsonObject::toVariantMap ( ) const

Converts this object to a QVariantMap.

Returns the created map.

See also: toVariantHash()

Definition at line 187 of file qjsonobject.cpp.

References QCborMap::fromJsonObject().

Referenced by QDefaultOutputMapping::load(), QKmsScreenConfig::loadConfig(), QJsonDocument::toVariant(), and QJsonValue::toVariant().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ value() [1/3]

QJsonValue QJsonObject::value ( const QString & key ) const

Returns a QJsonValue representing the value for the key key.

The returned QJsonValue is QJsonValue::Undefined if the key does not exist.

See also: QJsonValue, QJsonValue::isUndefined()

Definition at line 286 of file qjsonobject.cpp.

Referenced by GeoRouteJsonParserEsri::GeoRouteJsonParserEsri(), QSSGQmlUtilities::applyEdit(), QT_BEGIN_NAMESPACE::checkDocument(), QT_BEGIN_NAMESPACE::checkLocation(), constructRoute(), V4CommandHandler::createErrorResponse(), exportLineString(), getRequestedDisplays(), V4CommandHandler::handle(), UnknownV4CommandHandler::handleRequest(), instructionDepart(), instructionDirection(), instructionRotary(), instructionRoundabout(), instructionText(), instructionUseLane(), QDefaultOutputMapping::load(), TileProvider::onNetworkReplyFinished(), QJsonValue::operator[](), QJsonValue::operator[](), CategoryParser::parse(), parseAddressObject(), QT_BEGIN_NAMESPACE::parseDocument(), QMapboxCommon::parseGeoLocation(), QT_BEGIN_NAMESPACE::parseLocation(), QT_BEGIN_NAMESPACE::parsePlaceResult(), QGeoRouteParserOsrmV5Private::parseReply(), QGeoRouteParserOsrmV4Private::parseReply(), parseReview(), QGeoRouteParserOsrmV5Private::parseStep(), readGpuFeatures(), readInputFile(), and QGeoRouteParserOsrmV5ExtensionMapbox::updateSegment().

Here is the caller graph for this function:

◆ value() [2/3]

QJsonValue QJsonObject::value ( QLatin1StringView key ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.7

Definition at line 304 of file qjsonobject.cpp.

◆ value() [3/3]

QJsonValue QJsonObject::value ( QStringView key ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Since: 5.14

Definition at line 295 of file qjsonobject.cpp.

Friends And Related Symbol Documentation

◆ comparesEqual [1/3]

Q_CORE_EXPORT bool comparesEqual	(	const QJsonObject &	lhs,
		const QJsonObject &	rhs )

friend

Definition at line 624 of file qjsonobject.cpp.

◆ comparesEqual [2/3]

bool comparesEqual	(	const QJsonObject &	lhs,
		const QJsonValue &	rhs )

friend

Definition at line 317 of file qjsonobject.h.

◆ comparesEqual [3/3]

bool comparesEqual	(	const QJsonObject &	lhs,
		const QJsonValueConstRef &	rhs )

friend

Definition at line 322 of file qjsonobject.h.

◆ const_iterator

friend class const_iterator

friend

Definition at line 280 of file qjsonobject.h.

◆ iterator

friend class iterator

friend

Definition at line 190 of file qjsonobject.h.

◆ operator<<

Q_CORE_EXPORT QDebug operator<<	(	QDebug	,
		const QJsonObject &	)

friend

Definition at line 1429 of file qjsonobject.cpp.

◆ QCborMap

friend class QCborMap

friend

Definition at line 335 of file qjsonobject.h.

◆ QJsonDocument

friend class QJsonDocument

friend

Definition at line 331 of file qjsonobject.h.

◆ QJsonPrivate::Value

friend class QJsonPrivate::Value

friend

Definition at line 332 of file qjsonobject.h.

◆ QJsonValue

friend class QJsonValue

friend

Definition at line 330 of file qjsonobject.h.

◆ QJsonValueConstRef

friend class QJsonValueConstRef

friend

Definition at line 333 of file qjsonobject.h.

◆ QJsonValueRef

friend class QJsonValueRef

friend

Definition at line 334 of file qjsonobject.h.

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

qtbase/src/corelib/serialization/qjsonobject.h (de2a467a77f338d4b1e0a5044b809bdaf413ca72)
qtbase/src/corelib/serialization/qjsonobject.cpp (de2a467a77f338d4b1e0a5044b809bdaf413ca72)

Classes

Public Types

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

Member Typedef Documentation

◆ ConstIterator

◆ Iterator

◆ key_type

◆ mapped_type

◆ size_type

Constructor & Destructor Documentation

◆ QJsonObject() [1/4]

◆ QJsonObject() [2/4]

◆ ~QJsonObject()

◆ QJsonObject() [3/4]

◆ QJsonObject() [4/4]

Member Function Documentation

◆ begin() [1/2]

◆ begin() [2/2]

◆ constBegin()

◆ constEnd()

◆ constFind() [1/3]

◆ constFind() [2/3]

◆ constFind() [3/3]

◆ contains() [1/3]

◆ contains() [2/3]

◆ contains() [3/3]

◆ count()

◆ empty()

◆ end() [1/2]

◆ end() [2/2]

◆ erase()

◆ find() [1/6]

◆ find() [2/6]

◆ find() [3/6]

◆ find() [4/6]

◆ find() [5/6]

◆ find() [6/6]

◆ fromVariantHash()

◆ fromVariantMap()

◆ insert() [1/3]

◆ insert() [2/3]

◆ insert() [3/3]

◆ isEmpty()

◆ keys()

◆ length()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator[]() [1/6]

◆ operator[]() [2/6]

◆ operator[]() [3/6]

◆ operator[]() [4/6]

◆ operator[]() [5/6]

◆ operator[]() [6/6]

◆ remove() [1/3]

◆ remove() [2/3]

◆ remove() [3/3]

◆ size()

◆ swap()

◆ take() [1/3]

◆ take() [2/3]

◆ take() [3/3]

◆ toVariantHash()

◆ toVariantMap()

◆ value() [1/3]

◆ value() [2/3]

◆ value() [3/3]

Friends And Related Symbol Documentation

◆ comparesEqual [1/3]

◆ comparesEqual [2/3]

◆ comparesEqual [3/3]

◆ const_iterator

◆ iterator

◆ operator<<

◆ QCborMap

◆ QJsonDocument

◆ QJsonPrivate::Value

◆ QJsonValue