m::wasm::HashTable::the_entry< IsConst > Struct Template Reference

Helper struct as proxy to access a hash table entry. More...

#include <WasmAlgo.hpp>

Collaboration diagram for m::wasm::HashTable::the_entry< IsConst >:

Public Types
using	value_t = std::variant< std::monostate #define ADD_TYPE(TYPE) SQL_TYPES_SCALAR(ADD_TYPE) >

Public Member Functions
	the_entry ()=default
	the_entry (const the_entry &)=delete
	the_entry (the_entry &&)=default
	~the_entry ()
	operator the_entry< true > ()
	‍Converts a non-const entry to a const entry. The former entry is moved, i.e. must not be used afterwards.
bool	empty () const
	‍Returns true iff this does not contain any references.
bool	has (const Schema::Identifier &id) const
	‍Returns true iff this contains identifier id.
template<sql_type T>
void	add (Schema::Identifier id, the_reference< T, IsConst > &&ref)
	‍Adds a mapping from identifier id to reference ref.
value_t	extract (const Schema::Identifier &id)
	‍Returns the moved entry for identifier id.
template<sql_type T>
the_reference< T, IsConst >	extract (const Schema::Identifier &id)
	‍Returns the moved entry for identifier id.
value_t	get (const Schema::Identifier &id) const
	‍Returns the copied entry for identifier id.
template<sql_type T>
the_reference< T, IsConst >	get (const Schema::Identifier &id) const
	‍Returns the copied entry for identifier id.

Private Member Functions
	the_entry (std::unordered_multimap< Schema::Identifier, typename the_entry< not IsConst >::value_t > refs)
	‍constructs an entry from references of the opposite const-ness

Static Private Member Functions
static void	discard (value_t &ref)
	‍Discards the held reference of ref.

Private Attributes
std::unordered_multimap< Schema::Identifier, value_t >	refs_
	‍maps Schema::Identifiers to the_reference<T, IsConst>s that reference the stored expression, allows for duplicates similar to Schema

Friends
struct	HashTable

Detailed Description

template<bool IsConst>
struct m::wasm::HashTable::the_entry< IsConst >

Helper struct as proxy to access a hash table entry.

Definition at line 368 of file WasmAlgo.hpp.

Member Typedef Documentation

value_t

template<bool IsConst>

using m::wasm::HashTable::the_entry< IsConst >::value_t = std::variant< std::monostate #define ADD_TYPE(TYPE) SQL_TYPES_SCALAR(ADD_TYPE) >

Definition at line 372 of file WasmAlgo.hpp.

Constructor & Destructor Documentation

the_entry() [1/4]

template<bool IsConst>

m::wasm::HashTable::the_entry< IsConst >::the_entry ( )

default

the_entry() [2/4]

template<bool IsConst>

m::wasm::HashTable::the_entry< IsConst >::the_entry ( const the_entry< IsConst > &  )

delete

the_entry() [3/4]

template<bool IsConst>

m::wasm::HashTable::the_entry< IsConst >::the_entry ( the_entry< IsConst > &&  )

default

the_entry() [4/4]

template<bool IsConst>

m::wasm::HashTable::the_entry< IsConst >::the_entry ( std::unordered_multimap< Schema::Identifier, typename the_entry< not IsConst >::value_t >  refs )

inlineprivate

‍constructs an entry from references of the opposite const-ness

Definition at line 400 of file WasmAlgo.hpp.

References M_unreachable, m::wasm::HashTable::the_entry< IsConst >::refs_, and m::T().

~the_entry()

template<bool IsConst>

m::wasm::HashTable::the_entry< IsConst >::~the_entry ( )

inline

Definition at line 422 of file WasmAlgo.hpp.

References m::wasm::HashTable::discard(), and m::wasm::HashTable::the_entry< IsConst >::refs_.

Member Function Documentation

add()

template<bool IsConst>

template<sql_type T>

void m::wasm::HashTable::the_entry< IsConst >::add ( Schema::Identifier  id, the_reference< T, IsConst > &&  ref  )

inline

‍Adds a mapping from identifier id to reference ref.

Definition at line 438 of file WasmAlgo.hpp.

References m::wasm::HashTable::the_entry< IsConst >::refs_.

Referenced by m::wasm::ChainedHashTable< IsGlobal >::entry(), m::wasm::OpenAddressingHashTable< IsGlobal, ValueInPlace >::entry(), m::wasm::ChainedHashTable< IsGlobal >::value_entry(), and m::wasm::OpenAddressingHashTable< IsGlobal, ValueInPlace >::value_entry().

discard()

template<bool IsConst>

static void m::wasm::HashTable::the_entry< IsConst >::discard ( value_t &  ref )

inlinestaticprivate

‍Discards the held reference of ref.

Definition at line 381 of file WasmAlgo.hpp.

References M_unreachable.

empty()

template<bool IsConst>

bool m::wasm::HashTable::the_entry< IsConst >::empty ( ) const

inline

‍Returns true iff this does not contain any references.

Definition at line 431 of file WasmAlgo.hpp.

References m::wasm::HashTable::the_entry< IsConst >::refs_.

extract() [1/2]

template<bool IsConst>

value_t m::wasm::HashTable::the_entry< IsConst >::extract ( const Schema::Identifier &  id )

inline

‍Returns the moved entry for identifier id.

Definition at line 443 of file WasmAlgo.hpp.

References M_insist, and m::wasm::HashTable::the_entry< IsConst >::refs_.

Referenced by m::wasm::HashBasedGroupJoin::execute().

extract() [2/2]

template<bool IsConst>

template<sql_type T>

the_reference< T, IsConst > m::wasm::HashTable::the_entry< IsConst >::extract ( const Schema::Identifier &  id )

inline

‍Returns the moved entry for identifier id.

Definition at line 451 of file WasmAlgo.hpp.

References M_insist, and m::wasm::HashTable::the_entry< IsConst >::refs_.

get() [1/2]

template<bool IsConst>

value_t m::wasm::HashTable::the_entry< IsConst >::get ( const Schema::Identifier &  id ) const

inline

‍Returns the copied entry for identifier id.

Definition at line 462 of file WasmAlgo.hpp.

References M_insist, M_unreachable, and m::wasm::HashTable::the_entry< IsConst >::refs_.

Referenced by m::wasm::ChainedHashTable< IsGlobal >::entry(), m::wasm::HashBasedGrouping::execute(), m::wasm::HashBasedGroupJoin::execute(), and m::wasm::ChainedHashTable< IsGlobal >::value_entry().

get() [2/2]

template<bool IsConst>

template<sql_type T>

the_reference< T, IsConst > m::wasm::HashTable::the_entry< IsConst >::get ( const Schema::Identifier &  id ) const

inline

‍Returns the copied entry for identifier id.

Definition at line 473 of file WasmAlgo.hpp.

has()

template<bool IsConst>

bool m::wasm::HashTable::the_entry< IsConst >::has ( const Schema::Identifier &  id ) const

inline

‍Returns true iff this contains identifier id.

Definition at line 434 of file WasmAlgo.hpp.

References m::wasm::HashTable::the_entry< IsConst >::refs_.

operator the_entry< true >()

template<bool IsConst>

m::wasm::HashTable::the_entry< IsConst >::operator the_entry< true > ( )

inline

‍Converts a non-const entry to a const entry. The former entry is moved, i.e. must not be used afterwards.

Definition at line 428 of file WasmAlgo.hpp.

References m::wasm::HashTable::the_entry< IsConst >::refs_, and m::wasm::HashTable::the_entry< true >.

Friends And Related Function Documentation

HashTable

template<bool IsConst>

friend struct HashTable

friend

Definition at line 370 of file WasmAlgo.hpp.

Field Documentation

refs_

template<bool IsConst>

std::unordered_multimap<Schema::Identifier, value_t> m::wasm::HashTable::the_entry< IsConst >::refs_

private

‍maps Schema::Identifiers to the_reference<T, IsConst>s that reference the stored expression, allows for duplicates similar to Schema

Definition at line 391 of file WasmAlgo.hpp.

Referenced by m::wasm::HashTable::the_entry< IsConst >::add(), m::wasm::HashTable::the_entry< IsConst >::empty(), m::wasm::HashTable::the_entry< IsConst >::extract(), m::wasm::HashTable::the_entry< IsConst >::get(), m::wasm::HashTable::the_entry< IsConst >::has(), m::wasm::HashTable::the_entry< IsConst >::operator the_entry< true >(), m::wasm::HashTable::the_entry< IsConst >::the_entry(), and m::wasm::HashTable::the_entry< IsConst >::~the_entry().

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

• src/backend/WasmAlgo.hpp