geodesk::TagValue Class Reference

The value of a Tag. More...

#include <TagValue.h>

Public Member Functions
	TagValue ()
	TagValue (uint64_t taggedNumberValue, StringValue str=StringValue())
	TagValue (StringValue str)
	operator double () const noexcept
	operator int64_t () const noexcept
	operator int () const noexcept
	operator bool () const noexcept
bool	operator! () const noexcept
bool	operator== (const TagValue &other) const noexcept
bool	operator!= (const TagValue &other) const noexcept
bool	operator== (const std::string_view &sv) const noexcept
bool	operator== (double val) const noexcept
bool	operator== (int64_t val) const noexcept
bool	operator!= (const std::string_view &val) const noexcept
bool	operator!= (double val) const noexcept
bool	operator!= (int64_t val) const noexcept
bool	operator< (const TagValue &other) const noexcept
bool	operator< (double val) const noexcept
bool	operator> (double val) const noexcept
bool	operator<= (double val) const noexcept
bool	operator>= (double val) const noexcept
bool	operator< (int64_t val) const noexcept
bool	operator> (int64_t val) const noexcept
bool	operator<= (int64_t val) const noexcept
bool	operator>= (int64_t val) const noexcept
bool	operator< (int val) const noexcept
bool	operator> (int val) const noexcept
bool	operator<= (int val) const noexcept
bool	operator>= (int val) const noexcept
int	charCount () const noexcept
	Counts the number of UTF-8 characters (not bytes) that this TagValue represents.
bool	isStoredNumeric () const noexcept
	true if the value's native storage format is numeric.
StringValue	storedString () const noexcept
	The tag value as a string, if its native storage format is string.
clarisma::Decimal	storedNumber () const noexcept
	The tag value as a Decimal, if its native storage format is numeric.
template<typename Stream >
void	format (Stream &out) const
	Writes the tag value to the given Buffer, XMl/HTML-encoded.

Detailed Description

The value of a Tag.

Converts implicitly to std::string, double, int or bool.

• double: NaN if the string value does not start with a valid number
• int: 0 if the string value does not start with a valid number
• bool: true unless empty string, "no", or a numerical value of 0

Warning: A TagValue object is a lightweight wrapper around a pointer to a Feature's tag data, contained in a FeatureStore. It becomes invalid once that FeatureStore is closed. To use its value beyond the lifetime of the FeatureStore, convert it to a std::string (which allocates a copy of the tag data), or one of the supported scalar types.

See also

Tag, Tags

Constructor & Destructor Documentation

TagValue() [1/3]

geodesk::TagValue::TagValue ( )

inline

TagValue() [2/3]

geodesk::TagValue::TagValue ( uint64_t taggedNumberValue, StringValue str = StringValue() )

inlineexplicit

TagValue() [3/3]

geodesk::TagValue::TagValue ( StringValue str )

inline

Member Function Documentation

charCount()

int geodesk::TagValue::charCount ( ) const

noexcept

Counts the number of UTF-8 characters (not bytes) that this TagValue represents.

Numeric values are assumed to be formatted in their canonical representation.

format()

template<typename Stream >

void geodesk::TagValue::format ( Stream & out ) const

inline

Writes the tag value to the given Buffer, XMl/HTML-encoded.

Template Parameters

out

a Buffer

isStoredNumeric()

bool geodesk::TagValue::isStoredNumeric ( ) const

inlinenoexcept

true if the value's native storage format is numeric.

operator bool()

geodesk::TagValue::operator bool ( ) const

inlinenoexcept

operator double()

geodesk::TagValue::operator double ( ) const

inlinenoexcept

operator int()

geodesk::TagValue::operator int ( ) const

inlinenoexcept

operator int64_t()

geodesk::TagValue::operator int64_t ( ) const

inlinenoexcept

operator!()

bool geodesk::TagValue::operator! ( ) const

inlinenoexcept

operator!=() [1/4]

bool geodesk::TagValue::operator!= ( const std::string_view & val ) const

inlinenoexcept

operator!=() [2/4]

bool geodesk::TagValue::operator!= ( const TagValue & other ) const

inlinenoexcept

operator!=() [3/4]

bool geodesk::TagValue::operator!= ( double val ) const

inlinenoexcept

operator!=() [4/4]

bool geodesk::TagValue::operator!= ( int64_t val ) const

inlinenoexcept

operator<() [1/4]

bool geodesk::TagValue::operator< ( const TagValue & other ) const

inlinenoexcept

operator<() [2/4]

bool geodesk::TagValue::operator< ( double val ) const

inlinenoexcept

operator<() [3/4]

bool geodesk::TagValue::operator< ( int val ) const

inlinenoexcept

operator<() [4/4]

bool geodesk::TagValue::operator< ( int64_t val ) const

inlinenoexcept

operator<=() [1/3]

bool geodesk::TagValue::operator<= ( double val ) const

inlinenoexcept

operator<=() [2/3]

bool geodesk::TagValue::operator<= ( int val ) const

inlinenoexcept

operator<=() [3/3]

bool geodesk::TagValue::operator<= ( int64_t val ) const

inlinenoexcept

operator==() [1/4]

bool geodesk::TagValue::operator== ( const std::string_view & sv ) const

inlinenoexcept

operator==() [2/4]

bool geodesk::TagValue::operator== ( const TagValue & other ) const

noexcept

operator==() [3/4]

bool geodesk::TagValue::operator== ( double val ) const

inlinenoexcept

operator==() [4/4]

bool geodesk::TagValue::operator== ( int64_t val ) const

inlinenoexcept

operator>() [1/3]

bool geodesk::TagValue::operator> ( double val ) const

inlinenoexcept

operator>() [2/3]

bool geodesk::TagValue::operator> ( int val ) const

inlinenoexcept

operator>() [3/3]

bool geodesk::TagValue::operator> ( int64_t val ) const

inlinenoexcept

operator>=() [1/3]

bool geodesk::TagValue::operator>= ( double val ) const

inlinenoexcept

operator>=() [2/3]

bool geodesk::TagValue::operator>= ( int val ) const

inlinenoexcept

operator>=() [3/3]

bool geodesk::TagValue::operator>= ( int64_t val ) const

inlinenoexcept

storedNumber()

clarisma::Decimal geodesk::TagValue::storedNumber ( ) const

inlinenoexcept

The tag value as a Decimal, if its native storage format is numeric.

If the value is stored as a string, returns its global-string code (or 0 for a local string).

storedString()

StringValue geodesk::TagValue::storedString ( ) const

inlinenoexcept

The tag value as a string, if its native storage format is string.

If the value is stored as a number, returns an empty string.

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

• C:/dev/libgeodesk/include/geodesk/feature/TagValue.h