leveldb::IteratorWrapper Class Reference

#include <iterator_wrapper.h>

Collaboration diagram for leveldb::IteratorWrapper:

Public Member Functions
	IteratorWrapper ()
	IteratorWrapper (Iterator *iter)
	~IteratorWrapper ()
Iterator *	iter () const
void	Set (Iterator *iter)
bool	Valid () const
Slice	key () const
Slice	value () const
Status	status () const
void	Next ()
void	Prev ()
void	Seek (const Slice &k)
void	SeekToFirst ()
void	SeekToLast ()

Private Member Functions
void	Update ()

Private Attributes
Iterator *	iter_
bool	valid_
Slice	key_

Detailed Description

Definition at line 17 of file iterator_wrapper.h.

Constructor & Destructor Documentation

IteratorWrapper() [1/2]

leveldb::IteratorWrapper::IteratorWrapper ( )

inline

Definition at line 19 of file iterator_wrapper.h.

: iter_(NULL), valid_(false) { }

IteratorWrapper() [2/2]

leveldb::IteratorWrapper::IteratorWrapper ( Iterator *  iter )

inlineexplicit

Definition at line 20 of file iterator_wrapper.h.

                                          : iter_(NULL) {
    Set(iter);
  }

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~IteratorWrapper()

leveldb::IteratorWrapper::~IteratorWrapper ( )

inline

Definition at line 23 of file iterator_wrapper.h.

{ delete iter_; }

Member Function Documentation

iter()

Iterator* leveldb::IteratorWrapper::iter ( ) const

inline

Definition at line 24 of file iterator_wrapper.h.

{ return iter_; }

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key()

Slice leveldb::IteratorWrapper::key ( ) const

inline

Definition at line 41 of file iterator_wrapper.h.

{ assert(Valid()); return key_; }

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Next()

void leveldb::IteratorWrapper::Next ( )

inline

Definition at line 45 of file iterator_wrapper.h.

{ assert(iter_); iter_->Next();        Update(); }

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Prev()

void leveldb::IteratorWrapper::Prev ( )

inline

Definition at line 46 of file iterator_wrapper.h.

{ assert(iter_); iter_->Prev();        Update(); }

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Seek()

void leveldb::IteratorWrapper::Seek ( const Slice &  k )

inline

Definition at line 47 of file iterator_wrapper.h.

{ assert(iter_); iter_->Seek(k);       Update(); }

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SeekToFirst()

void leveldb::IteratorWrapper::SeekToFirst ( )

inline

Definition at line 48 of file iterator_wrapper.h.

{ assert(iter_); iter_->SeekToFirst(); Update(); }

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SeekToLast()

void leveldb::IteratorWrapper::SeekToLast ( )

inline

Definition at line 49 of file iterator_wrapper.h.

{ assert(iter_); iter_->SeekToLast();  Update(); }

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Set()

void leveldb::IteratorWrapper::Set ( Iterator *  iter )

inline

Definition at line 28 of file iterator_wrapper.h.

                           {
    delete iter_;
    iter_ = iter;
    if (iter_ == NULL) {
      valid_ = false;
    } else {
      Update();
    }
  }

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status()

Status leveldb::IteratorWrapper::status ( ) const

inline

Definition at line 44 of file iterator_wrapper.h.

{ assert(iter_); return iter_->status(); }

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Update()

void leveldb::IteratorWrapper::Update ( )

inlineprivate

Definition at line 52 of file iterator_wrapper.h.

                {
    valid_ = iter_->Valid();
    if (valid_) {
      key_ = iter_->key();
    }
  }

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Valid()

bool leveldb::IteratorWrapper::Valid ( ) const

inline

Definition at line 40 of file iterator_wrapper.h.

{ return valid_; }

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value()

Slice leveldb::IteratorWrapper::value ( ) const

inline

Definition at line 42 of file iterator_wrapper.h.

{ assert(Valid()); return iter_->value(); }

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Member Data Documentation

iter_

Iterator* leveldb::IteratorWrapper::iter_

private

Definition at line 59 of file iterator_wrapper.h.

key_

Slice leveldb::IteratorWrapper::key_

private

Definition at line 61 of file iterator_wrapper.h.

valid_

bool leveldb::IteratorWrapper::valid_

private

Definition at line 60 of file iterator_wrapper.h.

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

• table/iterator_wrapper.h