10Duke Enterprise C++ Client: tenduke::json Namespace Reference

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Detailed Description

JSON support.

Interfaces for simple JSON support.

Namespaces
namespace	cjson
	Implementation of JSON service interfaces using `cJSON`.

Classes
class	JSONArray
	A JSON array. More...

class	JSONArrayBuilder
	Builds JSON-array. More...

class	JSONBoolean
	JSON boolean. More...

class	JSONBuilder
	NOTE: This class is for now INTERNAL USE ONLY. More...

class	JSONElement
	Superclass of JSON elements. More...

class	JSONException
	Thrown on JSON-related errors. More...

class	JSONNumber
	Represents JSON number. More...

class	JSONObject
	JSON object element. More...

class	JSONObjectBuilder
	Builds JSON objects. More...

class	JSONParser
	Parser for JSON documents. More...

class	JSONParsingException
	Thrown when JSON parsing failed. More...

class	JSONString
	JSON string element. More...

Functions
tenduke::json::JSONArray *	castToArray (tenduke::json::JSONElement *element)
	Type-casts given element to JSONArray.

tenduke::json::JSONArray *	castToArray (const std::shared_ptr< tenduke::json::JSONElement > &element)
	Type-casts given element to JSONArray.

tenduke::json::JSONArray *	castToArray (const std::unique_ptr< tenduke::json::JSONElement > &element)
	Type-casts given element to JSONArray.

tenduke::json::JSONObject *	castToObject (tenduke::json::JSONElement *element)
	Type-casts given element to JSONObject.

tenduke::json::JSONObject *	castToObject (const std::shared_ptr< tenduke::json::JSONElement > &element)
	Type-casts given element to JSONObject.

tenduke::json::JSONObject *	castToObject (const std::unique_ptr< tenduke::json::JSONElement > &element)
	Type-casts given element to JSONObject.

std::int64_t	toInt64 (const JSONElement *element, bool throwIfInvalid=true, std::int64_t defaultValue=0)
	Returns given element as `std::int_64t`, assuming the element is JSONNumber.

std::int64_t	toInt64 (const JSONElement &element, bool throwIfInvalid=true, std::int64_t defaultValue=0)
	Returns given element as `std::int_64t`, assuming the element is JSONNumber.

bool	isBooleanTrue (const JSONElement *element)
	Returns `true` if `element` is JSONBoolean with value `true`.

bool	isBooleanTrue (const std::unique_ptr< const JSONElement > &element)
	Returns `true` if `element` is JSONBoolean with value `true`.

bool	isBooleanTrue (const std::shared_ptr< const JSONElement > &element)
	Returns `true` if `element` is JSONBoolean with value `true`.

tenduke::json::JSONArray *	getArray (const json::JSONObject *object, const std::string &propertyName)
	Helper to get JSON object property as `tenduke::json::JSONArray`.

bool	getBool (const json::JSONObject *object, const std::string &propertyName, bool defaultValue=false)
	Helper to get JSON object property as boolean.

std::int32_t	getInt32 (const tenduke::json::JSONObject *object, const std::string &propertyName, std::int32_t defaultValue=0)
	Helper to get numeric JSON object property as `std::int32_t`.

std::int64_t	getInt64 (const tenduke::json::JSONObject *object, const std::string &propertyName, std::int64_t defaultValue=0)
	Helper to get numeric JSON object property as `std::int64_t`.

tenduke::json::JSONNumber *	getNumber (const tenduke::json::JSONObject *object, const std::string &propertyName)
	Helper to get JSON object property as `tenduke::json::JSONNumber`.

tenduke::json::JSONObject *	getObject (const tenduke::json::JSONObject *object, const std::string &propertyName)
	Helper to get JSON object property as `tenduke::json::JSONObject`.

std::string	getStdString (const tenduke::json::JSONObject &object, const std::string &propertyName, const std::string &defaultValue={})
	Helper to get JSON object property as `std::string`.

std::string	getStdString (const tenduke::json::JSONObject *object, const std::string &propertyName, const std::string &defaultValue={})
	Helper to get JSON object property as `std::string`.

std::vector< std::string >	toArrayOfStrings (const ::tenduke::json::JSONArray *array)
	Converts a `tenduke::json::JSONArray` to a flattened vector of strings.

std::map< std::string, std::string >	toMapOfStrings (const tenduke::json::JSONObject *object)
	Converts a `tenduke::json::JSONObject` to a flattened map of strings, where the key is name of the object property and value is result of calling `tenduke::json::JSONElement.asString()` on the property element.

Function Documentation

◆ castToArray() [1/3]

tenduke::json::JSONArray * tenduke::json::castToArray ( const std::shared_ptr< tenduke::json::JSONElement > & element )

Type-casts given element to JSONArray.

Parameters

element -

Returns: the element as JSONArray. Returns nullptr if the provided parameter is nullptr or if the element isNull() or isUndefined()

Exceptions

`::tenduke::json::JSONException` if the element is not JSON array

◆ castToArray() [2/3]

tenduke::json::JSONArray * tenduke::json::castToArray ( const std::unique_ptr< tenduke::json::JSONElement > & element )

Type-casts given element to JSONArray.

Parameters

element -

Returns: the element as JSONArray. Returns nullptr if the provided parameter is nullptr or if the element isNull() or isUndefined()

Exceptions

`::tenduke::json::JSONException` if the element is not JSON array

◆ castToArray() [3/3]

xdjson::JSONArray * tenduke::json::castToArray ( tenduke::json::JSONElement * element )

Type-casts given element to JSONArray.

Parameters

element -

Returns: the element as JSONArray. Returns nullptr if the provided parameter is nullptr or if the element isNull() or isUndefined()

Exceptions

`::tenduke::json::JSONException` if the element is not JSON array

◆ castToObject() [1/3]

xdjson::JSONObject * tenduke::json::castToObject ( const std::shared_ptr< tenduke::json::JSONElement > & element )

Type-casts given element to JSONObject.

Parameters

element -

Returns: the element as JSONObject. Returns nullptr if the provided parameter is nullptr or if the element isNull() or isUndefined()

Exceptions

`::tenduke::json::JSONException` if the element is not JSON object

◆ castToObject() [2/3]

xdjson::JSONObject * tenduke::json::castToObject ( const std::unique_ptr< tenduke::json::JSONElement > & element )

Type-casts given element to JSONObject.

Parameters

element -

Returns: the element as JSONObject. Returns nullptr if the provided parameter is nullptr or if the element isNull() or isUndefined()

Exceptions

`::tenduke::json::JSONException` if the element is not JSON object

◆ castToObject() [3/3]

xdjson::JSONObject * tenduke::json::castToObject ( tenduke::json::JSONElement * element )

Type-casts given element to JSONObject.

Parameters

element -

Returns: the element as JSONObject. Returns nullptr if the provided parameter is nullptr or if the element isNull() or isUndefined()

Exceptions

`::tenduke::json::JSONException` if the element is not JSON object

◆ getArray()

xdjson::JSONArray * tenduke::json::getArray	(	const json::JSONObject *	object,
		const std::string &	propertyName )

Helper to get JSON object property as tenduke::json::JSONArray.

Parameters

object	the JSON object
propertyName	name of the JSON object property

Returns: the property cast to tenduke::json::JSONArray. Returns nullptr, if object does not contain such property, or if the property is null or undefined.

Exceptions

`::tenduke::json::JSONException` if the property is not JSON array.

◆ getBool()

bool tenduke::json::getBool	(	const json::JSONObject *	object,
		const std::string &	propertyName,
		bool	defaultValue = false )

Helper to get JSON object property as boolean.

Parameters

object	the JSON object
propertyName	name of the JSON object property
defaultValue	default value to return if the object does not have such property

Returns: true, if the JSON object has such property and the property is a JSON boolean with value true. Returns false if the property is a JSON boolean with value false. Returns parameter defaultValue if the JSON object does not have such property.

Exceptions

`::tenduke::json::JSONException` if the property is not JSON boolean.

◆ getInt32()

std::int32_t tenduke::json::getInt32	(	const tenduke::json::JSONObject *	object,
		const std::string &	propertyName,
		std::int32_t	defaultValue = 0 )

Helper to get numeric JSON object property as std::int32_t.

Parameters

object	the JSON object
propertyName	name of the JSON object property
defaultValue	default value to return if the object does not have such property

Returns: The value of the numeric JSON object property as std::int_32t. Returns parameter defaultValue if the JSON object does not have such property.

Exceptions

`::tenduke::json::JSONException` if the property is not JSON number.

◆ getInt64()

std::int64_t tenduke::json::getInt64	(	const tenduke::json::JSONObject *	object,
		const std::string &	propertyName,
		std::int64_t	defaultValue = 0 )

Helper to get numeric JSON object property as std::int64_t.

Parameters

object	the JSON object
propertyName	name of the JSON object property
defaultValue	default value to return if the object does not have such property

Returns: The value of the numeric JSON object property as std::int_64t. Returns parameter defaultValue if the JSON object does not have such property.

Exceptions

`::tenduke::json::JSONException` if the property is not JSON number.

◆ getNumber()

xdjson::JSONNumber * tenduke::json::getNumber	(	const tenduke::json::JSONObject *	object,
		const std::string &	propertyName )

Helper to get JSON object property as tenduke::json::JSONNumber.

Parameters

object	the JSON object
propertyName	name of the JSON object property

Returns: The JSON object property as JSON number. Returns nullptr if the JSON object does not have such property or if the property is null or undefined.

Exceptions

`::tenduke::json::JSONException` if the property is not JSON number.

◆ getObject()

xdjson::JSONObject * tenduke::json::getObject	(	const tenduke::json::JSONObject *	object,
		const std::string &	propertyName )

Helper to get JSON object property as tenduke::json::JSONObject.

Parameters

object	the JSON object
propertyName	name of the JSON object property

Returns: The JSON object property as JSON object. Returns nullptr if the JSON object does not have such property or if the property is null or undefined.

Exceptions

`::tenduke::json::JSONException` if the property is not JSON object.

◆ getStdString() [1/2]

std::string tenduke::json::getStdString	(	const tenduke::json::JSONObject &	object,
		const std::string &	propertyName,
		const std::string &	defaultValue = {} )

Helper to get JSON object property as std::string.

The property does not need to be tenduke::json::JSONString. This returns result of calling tenduke::json::JSONElement.asString() on the property element.

This function does not throw exceptions.

Parameters

object	the JSON object
propertyName	name of the JSON object property
defaultValue	default value to return if no such property, or the property is null or undefined

Returns: Result of calling tenduke::json::JSONElement.asString() on the property element. Returns parameter defaultValue if the JSON object does not have such property or if the property is null or undefined.

◆ getStdString() [2/2]

std::string tenduke::json::getStdString	(	const tenduke::json::JSONObject *	object,
		const std::string &	propertyName,
		const std::string &	defaultValue = {} )

Helper to get JSON object property as std::string.

The property does not need to be tenduke::json::JSONString. This returns result of calling tenduke::json::JSONElement.asString() on the property element.

This function does not throw exceptions.

Parameters

object	the JSON object
propertyName	name of the JSON object property
defaultValue	default value to return if no such property, or the property is null or undefined

Returns: Result of calling tenduke::json::JSONElement.asString() on the property element. Returns parameter defaultValue if the JSON object does not have such property or if the property is null or undefined.

◆ isBooleanTrue() [1/3]

bool tenduke::json::isBooleanTrue ( const JSONElement * element )

Returns true if element is JSONBoolean with value true.

Parameters

element -

Returns: -

◆ isBooleanTrue() [2/3]

bool tenduke::json::isBooleanTrue ( const std::shared_ptr< const JSONElement > & element )

Returns true if element is JSONBoolean with value true.

Parameters

element -

Returns: -

◆ isBooleanTrue() [3/3]

bool tenduke::json::isBooleanTrue ( const std::unique_ptr< const JSONElement > & element )

Returns true if element is JSONBoolean with value true.

Parameters

element -

Returns: -

◆ toArrayOfStrings()

std::vector< std::string > tenduke::json::toArrayOfStrings ( const ::tenduke::json::JSONArray * array )

Converts a tenduke::json::JSONArray to a flattened vector of strings.

Primitives (strings, numbers, booleans), will be string representations of themselves. For example elements of array ["a", 1, true] would be returned as "a", "1.000000", "true". JSON objects will be JSON.

Parameters

array -

Returns: -

◆ toInt64() [1/2]

std::int64_t tenduke::json::toInt64	(	const JSONElement &	element,
		bool	throwIfInvalid = true,
		std::int64_t	defaultValue = 0 )

Returns given element as std::int_64t, assuming the element is JSONNumber.

Parameters

element	-
throwIfInvalid	if `true`, the method throws `tenduke::json::JSONException` if the element is not JSONNumber. If `false`, returns parameter `defaultValue` if the element is e.g. `nullptr` or JSONString.
defaultValue	default value to return if the provided element is not JSONNumber (or element is e.g. nullptr). See `throwIfInvalid`.

Returns

Exceptions

`::tenduke::json::JSONException` if the element is not JSON number and throwIfInvalid is true.

◆ toInt64() [2/2]

std::int64_t tenduke::json::toInt64	(	const JSONElement *	element,
		bool	throwIfInvalid = true,
		std::int64_t	defaultValue = 0 )

Returns given element as std::int_64t, assuming the element is JSONNumber.

Parameters

element	-
throwIfInvalid	if `true`, the method throws `tenduke::json::JSONException` if the element is not JSONNumber. If `false`, returns parameter `defaultValue` if the element is e.g. `nullptr` or JSONString.
defaultValue	default value to return if the provided element is not JSONNumber (or element is e.g. nullptr). See `throwIfInvalid`.

Returns

Exceptions

`::tenduke::json::JSONException` if the element is not JSON number and throwIfInvalid is true.

◆ toMapOfStrings()

std::map< std::string, std::string > tenduke::json::toMapOfStrings ( const tenduke::json::JSONObject * object )

Converts a tenduke::json::JSONObject to a flattened map of strings, where the key is name of the object property and value is result of calling tenduke::json::JSONElement.asString() on the property element.

Parameters

object the JSON object

Returns: flattened map-representation of the JSON object

Detailed Description

Namespaces

Classes

Functions

Function Documentation

◆ castToArray() [1/3]

◆ castToArray() [2/3]

◆ castToArray() [3/3]

◆ castToObject() [1/3]

◆ castToObject() [2/3]

◆ castToObject() [3/3]

◆ getArray()

◆ getBool()

◆ getInt32()

◆ getInt64()

◆ getNumber()

◆ getObject()

◆ getStdString() [1/2]

◆ getStdString() [2/2]

◆ isBooleanTrue() [1/3]

◆ isBooleanTrue() [2/3]

◆ isBooleanTrue() [3/3]

◆ toArrayOfStrings()

◆ toInt64() [1/2]

◆ toInt64() [2/2]

◆ toMapOfStrings()