CPLJSONObject Class Reference

The CPLJSONArray class holds JSON object from CPLJSONDocument. More...

#include <cpl_json.h>

Inheritance diagram for CPLJSONObject:

Public Types
enum	Type {   Unknown, Null, Object, Array,   Boolean, String, Integer, Long,   Double }
	Json object types.
enum	PrettyFormat { Plain, Spaced, Pretty }
	Json object format to string options. More...

Public Member Functions
void	Add (const std::string &osName, const std::string &osValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, const char *pszValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, double dfValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, int nValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, GInt64 nValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, const CPLJSONArray &oValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, const CPLJSONObject &oValue)
	Add new key - value pair to json object. More...
void	Add (const std::string &osName, bool bValue)
	Add new key - value pair to json object. More...
void	AddNull (const std::string &osName)
	Add new key - null pair to json object. More...
void	Set (const std::string &osName, const std::string &osValue)
	Change value by key. More...
void	Set (const std::string &osName, const char *pszValue)
	Change value by key. More...
void	Set (const std::string &osName, double dfValue)
	Change value by key. More...
void	Set (const std::string &osName, int nValue)
	Change value by key. More...
void	Set (const std::string &osName, GInt64 nValue)
	Change value by key. More...
void	Set (const std::string &osName, bool bValue)
	Change value by key. More...
void	SetNull (const std::string &osName)
	Change value by key. More...
std::string	GetString (const std::string &osName, const std::string &osDefault="") const
	Get value by key. More...
double	GetDouble (const std::string &osName, double dfDefault=0.0) const
	Get value by key. More...
int	GetInteger (const std::string &osName, int nDefault=0) const
	Get value by key. More...
GInt64	GetLong (const std::string &osName, GInt64 nDefault=0) const
	Get value by key. More...
bool	GetBool (const std::string &osName, bool bDefault=false) const
	Get value by key. More...
std::string	ToString (const std::string &osDefault="") const
	Get value. More...
double	ToDouble (double dfDefault=0.0) const
	Get value. More...
int	ToInteger (int nDefault=0) const
	Get value. More...
GInt64	ToLong (GInt64 nDefault=0) const
	Get value. More...
bool	ToBool (bool bDefault=false) const
	Get value. More...
CPLJSONArray	ToArray () const
	Get value. More...
std::string	Format (enum PrettyFormat eFormat) const
	Stringify object to json format. More...
void	Delete (const std::string &osName)
	Delete json object by key. More...
CPLJSONArray	GetArray (const std::string &osName) const
	Get value by key. More...
CPLJSONObject	GetObj (const std::string &osName) const
	Get value by key. More...
CPLJSONObject	operator[] (const std::string &osName) const
	Get value by key. More...
enum Type	GetType () const
	Get json object type. More...
std::vector< CPLJSONObject >	GetChildren () const
	Get json object children. More...
bool	IsValid () const
	Check if json object valid. More...
void	Deinit ()
	Decrement reference counter and make pointer NULL. More...

Friends
class	CPLJSONArray
class	CPLJSONDocument

Detailed Description

The CPLJSONArray class holds JSON object from CPLJSONDocument.

Member Enumeration Documentation

PrettyFormat

enum CPLJSONObject::PrettyFormat

Json object format to string options.

Enumerator
Plain	No extra whitespace or formatting applied.
Spaced	Minimal whitespace inserted.
Pretty	Formatted output.

Member Function Documentation

Add() [1/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		const std::string &	osValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
osValue	String value.

Since

GDAL 2.3

Add() [2/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		const char *	pszValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
pszValue	String value.

Since

GDAL 2.3

Add() [3/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		double	dfValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
dfValue	Double value.

Since

GDAL 2.3

Add() [4/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		int	nValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
nValue	Integer value.

Since

GDAL 2.3

Add() [5/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		GInt64	nValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
nValue	Long value.

Since

GDAL 2.3

Add() [6/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		const CPLJSONArray &	oValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
oValue	Array value.

Since

GDAL 2.3

Add() [7/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		const CPLJSONObject &	oValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
oValue	Json object value.

Since

GDAL 2.3

Add() [8/8]

void CPLJSONObject::Add	(	const std::string &	osName,
		bool	bValue
	)

Add new key - value pair to json object.

Parameters

osName	Key name.
bValue	Boolean value.

Since

GDAL 2.3

AddNull()

void CPLJSONObject::AddNull

(

const std::string &

osName

)

Add new key - null pair to json object.

Parameters

osName

Key name.

Since

GDAL 2.3

Deinit()

void CPLJSONObject::Deinit

(

)

Decrement reference counter and make pointer NULL.

A json object will become invalid.

Since

GDAL 2.3

Delete()

void CPLJSONObject::Delete

(

const std::string &

osName

)

Delete json object by key.

Parameters

osName

Key name.

Since

GDAL 2.3

Format()

std::string CPLJSONObject::Format

(

enum PrettyFormat

eFormat

)

const

Stringify object to json format.

Parameters

eFormat

Format type,

Returns

A string in JSON format.

Since

GDAL 2.3

GetArray()

CPLJSONArray CPLJSONObject::GetArray

(

const std::string &

osName

)

const

Get value by key.

Parameters

osName

Key name.

Returns

Json array object.

Since

GDAL 2.3

GetBool()

bool CPLJSONObject::GetBool	(	const std::string &	osName,
		bool	bDefault = false
	)		const

Get value by key.

Parameters

osName	Key name.
bDefault	Default value.

Returns

Boolean value.

Since

GDAL 2.3

GetChildren()

std::vector< CPLJSONObject > CPLJSONObject::GetChildren

(

)

const

Get json object children.

This function is useful when keys is not know and need to iterate over json object items and get keys and values.

Returns

Array of CPLJSONObject class instance.

Since

GDAL 2.3

GetDouble()

double CPLJSONObject::GetDouble	(	const std::string &	osName,
		double	dfDefault = 0.0
	)		const

Get value by key.

Parameters

osName	Key name.
dfDefault	Default value.

Returns

Double value.

Since

GDAL 2.3

GetInteger()

int CPLJSONObject::GetInteger	(	const std::string &	osName,
		int	nDefault = 0
	)		const

Get value by key.

Parameters

osName	Key name.
nDefault	Default value.

Returns

Integer value.

Since

GDAL 2.3

GetLong()

GInt64 CPLJSONObject::GetLong	(	const std::string &	osName,
		GInt64	nDefault = 0
	)		const

Get value by key.

Parameters

osName	Key name.
nDefault	Default value.

Returns

Long value.

Since

GDAL 2.3

GetObj()

CPLJSONObject CPLJSONObject::GetObj

(

const std::string &

osName

)

const

Get value by key.

Parameters

osName

Key name.

Returns

Json object.

Since

GDAL 2.3

GetString()

std::string CPLJSONObject::GetString	(	const std::string &	osName,
		const std::string &	osDefault = ""
	)		const

Get value by key.

Parameters

osName	Key name.
osDefault	Default value.

Returns

String value.

Since

GDAL 2.3

GetType()

CPLJSONObject::Type CPLJSONObject::GetType

(

)

const

Get json object type.

Returns

Json object type.

Since

GDAL 2.3

IsValid()

bool CPLJSONObject::IsValid

(

)

const

Check if json object valid.

Returns

true if json object valid.

Since

GDAL 2.3

operator[]()

CPLJSONObject CPLJSONObject::operator[]

(

const std::string &

osName

)

const

Get value by key.

Parameters

osName

Key name.

Returns

Json object.

Since

GDAL 2.3

Set() [1/6]

void CPLJSONObject::Set	(	const std::string &	osName,
		const std::string &	osValue
	)

Change value by key.

Parameters

osName	Key name.
osValue	String value.

Since

GDAL 2.3

Set() [2/6]

void CPLJSONObject::Set	(	const std::string &	osName,
		const char *	pszValue
	)

Change value by key.

Parameters

osName	Key name.
pszValue	String value.

Since

GDAL 2.3

Set() [3/6]

void CPLJSONObject::Set	(	const std::string &	osName,
		double	dfValue
	)

Change value by key.

Parameters

osName	Key name.
dfValue	Double value.

Since

GDAL 2.3

Set() [4/6]

void CPLJSONObject::Set	(	const std::string &	osName,
		int	nValue
	)

Change value by key.

Parameters

osName	Key name.
nValue	Integer value.

Since

GDAL 2.3

Set() [5/6]

void CPLJSONObject::Set	(	const std::string &	osName,
		GInt64	nValue
	)

Change value by key.

Parameters

osName	Key name.
nValue	Long value.

Since

GDAL 2.3

Set() [6/6]

void CPLJSONObject::Set	(	const std::string &	osName,
		bool	bValue
	)

Change value by key.

Parameters

osName	Key name.
bValue	Boolean value.

Since

GDAL 2.3

SetNull()

void CPLJSONObject::SetNull

(

const std::string &

osName

)

Change value by key.

Parameters

osName

Key name.

Since

GDAL 2.3

ToArray()

CPLJSONArray CPLJSONObject::ToArray

(

)

const

Get value.

Returns

Array

Since

GDAL 2.3

ToBool()

bool CPLJSONObject::ToBool

(

bool

bDefault = false

)

const

Get value.

Parameters

bDefault

Default value.

Returns

Boolean value.

Since

GDAL 2.3

ToDouble()

double CPLJSONObject::ToDouble

(

double

dfDefault = 0.0

)

const

Get value.

Parameters

dfDefault

Default value.

Returns

Double value.

Since

GDAL 2.3

ToInteger()

int CPLJSONObject::ToInteger

(

int

nDefault = 0

)

const

Get value.

Parameters

nDefault

Default value.

Returns

Integer value.

Since

GDAL 2.3

ToLong()

GInt64 CPLJSONObject::ToLong

(

GInt64

nDefault = 0

)

const

Get value.

Parameters

nDefault

Default value.

Returns

Long value.

Since

GDAL 2.3

ToString()

std::string CPLJSONObject::ToString

(

const std::string &

osDefault = ""

)

const

Get value.

Parameters

osDefault

Default value.

Returns

String value.

Since

GDAL 2.3

---

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

• cpl_json.h
• cpl_json.cpp