leveldb::Version::LevelFileNumIterator Class Reference

Inheritance diagram for leveldb::Version::LevelFileNumIterator:

Collaboration diagram for leveldb::Version::LevelFileNumIterator:

Public Member Functions
	LevelFileNumIterator (const InternalKeyComparator &icmp, const std::vector< FileMetaData *> *flist)
virtual bool	Valid () const
virtual void	Seek (const Slice &target)
virtual void	SeekToFirst ()
virtual void	SeekToLast ()
virtual void	Next ()
virtual void	Prev ()
Slice	key () const
Slice	value () const
virtual Status	status () const
Public Member Functions inherited from leveldb::Iterator
	Iterator ()
virtual	~Iterator ()
void	RegisterCleanup (CleanupFunction function, void *arg1, void *arg2)

Private Attributes
const InternalKeyComparator	icmp_
const std::vector< FileMetaData * > *const	flist_
uint32_t	index_
char	value_buf_ [16]

Additional Inherited Members
Public Types inherited from leveldb::Iterator
typedef void(*	CleanupFunction) (void *arg1, void *arg2)

Detailed Description

Definition at line 163 of file version_set.cc.

Constructor & Destructor Documentation

LevelFileNumIterator()

leveldb::Version::LevelFileNumIterator::LevelFileNumIterator ( const InternalKeyComparator &  icmp, const std::vector< FileMetaData *> *  flist  )

inline

Definition at line 165 of file version_set.cc.

      : icmp_(icmp),
        flist_(flist),
        index_(flist->size()) {        // Marks as invalid
  }

Member Function Documentation

key()

Slice leveldb::Version::LevelFileNumIterator::key ( ) const

inlinevirtual

Implements leveldb::Iterator.

Definition at line 193 of file version_set.cc.

                    {
    assert(Valid());
    return (*flist_)[index_]->largest.Encode();
  }

Next()

virtual void leveldb::Version::LevelFileNumIterator::Next ( )

inlinevirtual

Implements leveldb::Iterator.

Definition at line 181 of file version_set.cc.

                      {
    assert(Valid());
    index_++;
  }

Prev()

virtual void leveldb::Version::LevelFileNumIterator::Prev ( )

inlinevirtual

Implements leveldb::Iterator.

Definition at line 185 of file version_set.cc.

                      {
    assert(Valid());
    if (index_ == 0) {
      index_ = flist_->size();  // Marks as invalid
    } else {
      index_--;
    }
  }

Seek()

virtual void leveldb::Version::LevelFileNumIterator::Seek ( const Slice &  target )

inlinevirtual

Implements leveldb::Iterator.

Definition at line 174 of file version_set.cc.

                                         {
    index_ = FindFile(icmp_, *flist_, target);
  }

Here is the call graph for this function:

SeekToFirst()

virtual void leveldb::Version::LevelFileNumIterator::SeekToFirst ( )

inlinevirtual

Implements leveldb::Iterator.

Definition at line 177 of file version_set.cc.

{ index_ = 0; }

SeekToLast()

virtual void leveldb::Version::LevelFileNumIterator::SeekToLast ( )

inlinevirtual

Implements leveldb::Iterator.

Definition at line 178 of file version_set.cc.

                            {
    index_ = flist_->empty() ? 0 : flist_->size() - 1;
  }

status()

virtual Status leveldb::Version::LevelFileNumIterator::status ( ) const

inlinevirtual

Implements leveldb::Iterator.

Definition at line 203 of file version_set.cc.

{ return Status::OK(); }

Here is the call graph for this function:

Valid()

virtual bool leveldb::Version::LevelFileNumIterator::Valid ( ) const

inlinevirtual

Implements leveldb::Iterator.

Definition at line 171 of file version_set.cc.

                             {
    return index_ < flist_->size();
  }

value()

Slice leveldb::Version::LevelFileNumIterator::value ( ) const

inlinevirtual

Implements leveldb::Iterator.

Definition at line 197 of file version_set.cc.

                      {
    assert(Valid());
    EncodeFixed64(value_buf_, (*flist_)[index_]->number);
    EncodeFixed64(value_buf_+8, (*flist_)[index_]->file_size);
    return Slice(value_buf_, sizeof(value_buf_));
  }

Here is the call graph for this function:

Member Data Documentation

flist_

const std::vector<FileMetaData*>* const leveldb::Version::LevelFileNumIterator::flist_

private

Definition at line 206 of file version_set.cc.

icmp_

const InternalKeyComparator leveldb::Version::LevelFileNumIterator::icmp_

private

Definition at line 205 of file version_set.cc.

index_

uint32_t leveldb::Version::LevelFileNumIterator::index_

private

Definition at line 207 of file version_set.cc.

value_buf_

char leveldb::Version::LevelFileNumIterator::value_buf_[16]

mutableprivate

Definition at line 210 of file version_set.cc.

---

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

• db/version_set.cc