Thrill  0.1
Public Types | Public Member Functions | Static Public Attributes | Private Member Functions | Private Attributes | List of all members
GroupByIterator< ValueType, KeyExtractor, Comparator > Class Template Reference

Detailed Description

template<typename ValueType, typename KeyExtractor, typename Comparator>
class thrill::api::GroupByIterator< ValueType, KeyExtractor, Comparator >

Definition at line 48 of file group_by_iterator.hpp.

#include <group_by_iterator.hpp>

Public Types

using Key = typename common::FunctionTraits< KeyExtractor >::result_type
 
using Reader = typename data::File::Reader
 
using ValueIn = ValueType
 

Public Member Functions

 GroupByIterator (Reader &reader, const KeyExtractor &key_extractor)
 
 GroupByIterator (const GroupByIterator &)=delete
 non-copyable: delete copy-constructor More...
 
 GroupByIterator (GroupByIterator &&)=default
 move-constructor: default More...
 
bool HasNext ()
 
ValueIn Next ()
 
GroupByIterator & operator= (const GroupByIterator &)=delete
 non-copyable: delete assignment operator More...
 
GroupByIterator & operator= (GroupByIterator &&)=default
 move-assignment operator: default More...
 

Static Public Attributes

static constexpr bool debug = false
 

Private Member Functions

void GetNextElem ()
 
const Key & GetNextKey ()
 
bool HasNextForReal ()
 

Private Attributes

ValueIn elem_
 
bool equal_key_
 
bool is_reader_empty_
 
Key key_
 
const KeyExtractor & key_extractor_
 
Reader & reader_
 

Member Typedef Documentation

◆ Key

using Key = typename common::FunctionTraits<KeyExtractor>::result_type

Definition at line 65 of file group_by_iterator.hpp.

◆ Reader

using Reader = typename data::File::Reader

Definition at line 66 of file group_by_iterator.hpp.

◆ ValueIn

using ValueIn = ValueType

Definition at line 64 of file group_by_iterator.hpp.

Constructor & Destructor Documentation

◆ GroupByIterator() [1/3]

GroupByIterator ( Reader &  reader,
const KeyExtractor &  key_extractor 
)
inline

Definition at line 68 of file group_by_iterator.hpp.

References GroupByIterator< ValueType, KeyExtractor, Comparator >::operator=().

◆ GroupByIterator() [2/3]

GroupByIterator ( const GroupByIterator< ValueType, KeyExtractor, Comparator > &  )
delete

non-copyable: delete copy-constructor

◆ GroupByIterator() [3/3]

GroupByIterator ( GroupByIterator< ValueType, KeyExtractor, Comparator > &&  )
default

move-constructor: default

Member Function Documentation

◆ GetNextElem()

void GetNextElem ( )
inlineprivate

Definition at line 114 of file group_by_iterator.hpp.

References GroupByIterator< ValueType, KeyExtractor, Comparator >::key_extractor_.

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::Next(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::Next().

◆ GetNextKey()

const Key& GetNextKey ( )
inlineprivate

Definition at line 101 of file group_by_iterator.hpp.

References GroupByIterator< ValueType, KeyExtractor, Comparator >::equal_key_, and GroupByIterator< ValueType, KeyExtractor, Comparator >::key_.

◆ HasNext()

bool HasNext ( )
inline

Definition at line 85 of file group_by_iterator.hpp.

References GroupByIterator< ValueType, KeyExtractor, Comparator >::equal_key_, and GroupByIterator< ValueType, KeyExtractor, Comparator >::is_reader_empty_.

◆ HasNextForReal()

bool HasNextForReal ( )
inlineprivate

Definition at line 97 of file group_by_iterator.hpp.

References GroupByIterator< ValueType, KeyExtractor, Comparator >::is_reader_empty_.

◆ Next()

ValueIn Next ( )
inline

Definition at line 89 of file group_by_iterator.hpp.

References GroupByIterator< ValueType, KeyExtractor, Comparator >::elem_, GroupByIterator< ValueType, KeyExtractor, Comparator >::GetNextElem(), and GroupByIterator< ValueType, KeyExtractor, Comparator >::is_reader_empty_.

◆ operator=() [1/2]

GroupByIterator& operator= ( const GroupByIterator< ValueType, KeyExtractor, Comparator > &  )
delete

non-copyable: delete assignment operator

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::GroupByIterator(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::GroupByMultiwayMergeIterator().

◆ operator=() [2/2]

GroupByIterator& operator= ( GroupByIterator< ValueType, KeyExtractor, Comparator > &&  )
default

move-assignment operator: default

Member Data Documentation

◆ debug

constexpr bool debug = false
static

Definition at line 63 of file group_by_iterator.hpp.

◆ elem_

ValueIn elem_
private

Definition at line 111 of file group_by_iterator.hpp.

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::Next(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::Next().

◆ equal_key_

bool equal_key_
private

Definition at line 110 of file group_by_iterator.hpp.

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::GetNextKey(), GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::GetNextKey(), GroupByIterator< ValueType, KeyExtractor, Comparator >::HasNext(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::HasNext().

◆ is_reader_empty_

bool is_reader_empty_
private

Definition at line 109 of file group_by_iterator.hpp.

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::HasNext(), GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::HasNext(), GroupByIterator< ValueType, KeyExtractor, Comparator >::HasNextForReal(), GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::HasNextForReal(), GroupByIterator< ValueType, KeyExtractor, Comparator >::Next(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::Next().

◆ key_

Key key_
private

Definition at line 112 of file group_by_iterator.hpp.

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::GetNextKey(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::GetNextKey().

◆ key_extractor_

const KeyExtractor& key_extractor_
private

Definition at line 108 of file group_by_iterator.hpp.

Referenced by GroupByIterator< ValueType, KeyExtractor, Comparator >::GetNextElem(), and GroupByMultiwayMergeIterator< ValueType, KeyExtractor, Comparator >::GetNextElem().

◆ reader_

Reader& reader_
private

Definition at line 107 of file group_by_iterator.hpp.

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