clang-tools
8.0.0
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#include <Iterator.h>
Public Member Functions | |
Corpus (DocID Size) | |
std::unique_ptr< Iterator > | intersect (std::vector< std::unique_ptr< Iterator >> Children) const |
Returns AND Iterator which performs the intersection of the PostingLists of its children. More... | |
std::unique_ptr< Iterator > | unionOf (std::vector< std::unique_ptr< Iterator >> Children) const |
Returns OR Iterator which performs the union of the PostingLists of its children. More... | |
std::unique_ptr< Iterator > | all () const |
Returns TRUE Iterator which iterates over "virtual" PostingList containing all items in range [0, Size) in an efficient manner. More... | |
std::unique_ptr< Iterator > | none () const |
Returns FALSE Iterator which iterates over no documents. More... | |
std::unique_ptr< Iterator > | boost (std::unique_ptr< Iterator > Child, float Factor) const |
Returns BOOST iterator which multiplies the score of each item by given factor. More... | |
std::unique_ptr< Iterator > | limit (std::unique_ptr< Iterator > Child, size_t Limit) const |
Returns LIMIT iterator, which yields up to N elements of its child iterator. More... | |
template<typename... Args> | |
std::unique_ptr< Iterator > | intersect (Args... args) const |
This allows intersect(create(...), create(...)) syntax. More... | |
template<typename... Args> | |
std::unique_ptr< Iterator > | unionOf (Args... args) const |
This allows unionOf(create(...), create(...)) syntax. More... | |
Definition at line 135 of file Iterator.h.
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inlineexplicit |
Definition at line 139 of file Iterator.h.
std::unique_ptr< Iterator > clang::clangd::dex::Corpus::all | ( | ) | const |
Returns TRUE Iterator which iterates over "virtual" PostingList containing all items in range [0, Size) in an efficient manner.
Definition at line 418 of file Iterator.cpp.
std::unique_ptr< Iterator > clang::clangd::dex::Corpus::boost | ( | std::unique_ptr< Iterator > | Child, |
float | Factor | ||
) | const |
Returns BOOST iterator which multiplies the score of each item by given factor.
Boosting can be used as a computationally inexpensive filtering. Users can return significantly more items using consumeAndBoost() and then trim Top K using retrieval score.
Definition at line 426 of file Iterator.cpp.
std::unique_ptr< Iterator > clang::clangd::dex::Corpus::intersect | ( | std::vector< std::unique_ptr< Iterator >> | Children | ) | const |
Returns AND Iterator which performs the intersection of the PostingLists of its children.
consume(): AND Iterator returns the product of Childrens' boosting scores.
Definition at line 359 of file Iterator.cpp.
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inline |
This allows intersect(create(...), create(...)) syntax.
Definition at line 180 of file Iterator.h.
std::unique_ptr< Iterator > clang::clangd::dex::Corpus::limit | ( | std::unique_ptr< Iterator > | Child, |
size_t | Limit | ||
) | const |
Returns LIMIT iterator, which yields up to N elements of its child iterator.
Elements only count towards the limit if they are part of the final result set. Therefore the following iterator (AND (2) (LIMIT (1 2) 1)) yields (2), not ().
Definition at line 435 of file Iterator.cpp.
std::unique_ptr< Iterator > clang::clangd::dex::Corpus::none | ( | ) | const |
Returns FALSE Iterator which iterates over no documents.
Definition at line 422 of file Iterator.cpp.
std::unique_ptr< Iterator > clang::clangd::dex::Corpus::unionOf | ( | std::vector< std::unique_ptr< Iterator >> | Children | ) | const |
Returns OR Iterator which performs the union of the PostingLists of its children.
consume(): OR Iterator returns the highest boost value among children containing the requested item.
Definition at line 389 of file Iterator.cpp.
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inline |
This allows unionOf(create(...), create(...)) syntax.
Definition at line 188 of file Iterator.h.