Represents a MySQL date/time value (DATE, TIME, DATETIME or TIMESTAMP) - an extension to the ECMA set of JSON scalar types, types J_DATE, J_TIME, J_DATETIME and J_TIMESTAMP respectively. More...

#include <json_dom.h>

Inheritance diagram for Json_datetime:

[legend]

Public Member Functions
	Json_datetime (const MYSQL_TIME &t, enum_field_types ft)
	Constructs a object to hold a MySQL date/time value. More...

enum_json_type	json_type () const override

Json_dom_ptr	clone () const override
	Make a deep clone. More...

const MYSQL_TIME *	value () const
	Return a pointer the date/time value. More...

enum_field_types	field_type () const
	Return what kind of date/time value this object holds. More...

void	to_packed (char *dest) const
	Convert the datetime to the packed format used when storing datetime values. More...

Public Member Functions inherited from Json_scalar
uint32	depth () const final
	Compute the depth of a document. More...

bool	is_scalar () const final

Public Member Functions inherited from Json_dom
virtual	~Json_dom ()=default

void *	operator new (size_t size, const std::nothrow_t &) noexcept
	Allocate space on the heap for a Json_dom object. More...

void	operator delete (void *ptr) noexcept
	Deallocate the space used by a Json_dom object. More...

void	operator delete (void *ptr, const std::nothrow_t &) noexcept
	Nothrow delete. More...

Json_container *	parent () const
	Get the parent dom to which this dom is attached. More...

virtual bool	is_number () const

Json_path	get_location () const
	Get the path location of this dom, measured from the outermost document it nests inside. More...

bool	seek (const Json_seekable_path &path, size_t legs, Json_dom_vector *hits, bool auto_wrap, bool only_need_one)
	Finds all of the json sub-documents which match the path expression. More...

Static Public Member Functions
static void	from_packed (const char from, enum_field_types ft, MYSQL_TIME to)
	Convert a packed datetime back to a MYSQL_TIME. More...

static void	from_packed_to_key (const char from, enum_field_types ft, uchar to, uint8 dec)
	Convert a packed datetime to key string for indexing by SE. More...

Static Public Member Functions inherited from Json_dom
static Json_dom_ptr	parse (const char *text, size_t length, const JsonParseErrorHandler &error_handler, const JsonErrorHandler &depth_handler)
	Parse Json text to DOM (using rapidjson). More...

static Json_dom_ptr	parse (const json_binary::Value &v)
	Construct a DOM object based on a binary JSON value. More...

Static Public Attributes
static const size_t	PACKED_SIZE = 8
	Datetimes are packed in eight bytes. More...

Private Attributes
MYSQL_TIME	m_t
	holds the date/time value More...

enum_field_types	m_field_type
	identifies which type of date/time More...

Detailed Description

Represents a MySQL date/time value (DATE, TIME, DATETIME or TIMESTAMP) - an extension to the ECMA set of JSON scalar types, types J_DATE, J_TIME, J_DATETIME and J_TIMESTAMP respectively.

The method field_type identifies which of the four it is.

Constructor & Destructor Documentation

◆ Json_datetime()

Json_datetime::Json_datetime	(	const MYSQL_TIME &	t,
		enum_field_types	ft
	)

inline

Constructs a object to hold a MySQL date/time value.

Parameters

[in]	t	the time/value
[in]	ft	the field type: must be one of MYSQL_TYPE_TIME, MYSQL_TYPE_DATE, MYSQL_TYPE_DATETIME or MYSQL_TYPE_TIMESTAMP.

Member Function Documentation

◆ clone()

Json_dom_ptr Json_datetime::clone ( ) const

overridevirtual

Make a deep clone.

The ownership of the returned object is henceforth with the caller.

Returns: a cloned Json_dom object.

Implements Json_dom.

◆ field_type()

enum_field_types Json_datetime::field_type ( ) const

inline

Return what kind of date/time value this object holds.

Returns: One of MYSQL_TYPE_TIME, MYSQL_TYPE_DATE, MYSQL_TYPE_DATETIME or MYSQL_TYPE_TIMESTAMP.

◆ from_packed()

void Json_datetime::from_packed	(	const char *	from,
		enum_field_types	ft,
		MYSQL_TIME *	to
	)

static

Convert a packed datetime back to a MYSQL_TIME.

Parameters

from	the buffer to read from (must have at least PACKED_SIZE bytes)
ft	the field type of the value
to	the MYSQL_TIME to write the value to

◆ from_packed_to_key()

void Json_datetime::from_packed_to_key	(	const char *	from,
		enum_field_types	ft,
		uchar *	to,
		uint8	dec
	)

static

Convert a packed datetime to key string for indexing by SE.

Parameters

from	the buffer to read from
ft	the field type of the value
to	the destination buffer
dec	value's decimals

◆ json_type()

enum_json_type Json_datetime::json_type ( ) const

overridevirtual

Returns: the type corresponding to the actual Json_dom subclass

Implements Json_dom.

◆ to_packed()

void Json_datetime::to_packed ( char * dest ) const

Convert the datetime to the packed format used when storing datetime values.

Parameters

dest	the destination buffer to write the packed datetime to (must at least have size PACKED_SIZE)

◆ value()

const MYSQL_TIME * Json_datetime::value ( ) const

inline

Return a pointer the date/time value.

Ownership is not transferred. To identify which time time the value represents, use field_type.

Returns: the pointer

Member Data Documentation

◆ m_field_type

enum_field_types Json_datetime::m_field_type

private

identifies which type of date/time

◆ m_t

MYSQL_TIME Json_datetime::m_t

private

holds the date/time value

◆ PACKED_SIZE

const size_t Json_datetime::PACKED_SIZE = 8

static

Datetimes are packed in eight bytes.

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

sql-common/json_dom.h
sql-common/json_dom.cc

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Json_datetime()

Member Function Documentation

◆ clone()

◆ field_type()

◆ from_packed()

◆ from_packed_to_key()

◆ json_type()

◆ to_packed()

◆ value()

Member Data Documentation

◆ m_field_type

◆ m_t

◆ PACKED_SIZE