leveldb::Comparator Class Reference

#include <comparator.h>

Inheritance diagram for leveldb::Comparator:

Public Member Functions
int	operator() (const Key &a, const Key &b) const
virtual	~Comparator ()
virtual int	Compare (const Slice &a, const Slice &b) const =0
virtual const char *	Name () const =0
virtual void	FindShortestSeparator (std::string *start, const Slice &limit) const =0
virtual void	FindShortSuccessor (std::string *key) const =0

Detailed Description

Definition at line 17 of file skiplist_test.cc.

Constructor & Destructor Documentation

~Comparator()

leveldb::Comparator::~Comparator ( )

virtual

Definition at line 14 of file comparator.cc.

{ }

Member Function Documentation

Compare()

virtual int leveldb::Comparator::Compare ( const Slice &  a, const Slice &  b  ) const

pure virtual

Implemented in leveldb::InternalKeyComparator, leveldb_comparator_t, leveldb::anonymous_namespace{table_test.cc}::ReverseKeyComparator, and leveldb::anonymous_namespace{comparator.cc}::BytewiseComparatorImpl.

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FindShortestSeparator()

virtual void leveldb::Comparator::FindShortestSeparator ( std::string *  start, const Slice &  limit  ) const

pure virtual

Implemented in leveldb::InternalKeyComparator, leveldb_comparator_t, leveldb::anonymous_namespace{table_test.cc}::ReverseKeyComparator, and leveldb::anonymous_namespace{comparator.cc}::BytewiseComparatorImpl.

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FindShortSuccessor()

virtual void leveldb::Comparator::FindShortSuccessor ( std::string *  key ) const

pure virtual

Implemented in leveldb::InternalKeyComparator, leveldb_comparator_t, leveldb::anonymous_namespace{table_test.cc}::ReverseKeyComparator, and leveldb::anonymous_namespace{comparator.cc}::BytewiseComparatorImpl.

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Name()

virtual const char* leveldb::Comparator::Name ( ) const

pure virtual

Implemented in leveldb::InternalKeyComparator, leveldb_comparator_t, leveldb::anonymous_namespace{table_test.cc}::ReverseKeyComparator, and leveldb::anonymous_namespace{comparator.cc}::BytewiseComparatorImpl.

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operator()()

int leveldb::Comparator::operator() ( const Key &  a, const Key &  b  ) const

inline

Definition at line 18 of file skiplist_test.cc.

                                                   {
    if (a < b) {
      return -1;
    } else if (a > b) {
      return +1;
    } else {
      return 0;
    }
  }

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

• db/skiplist_test.cc
• include/leveldb/comparator.h
• util/comparator.cc