leveldb::LookupKey Class Reference

#include <dbformat.h>

Public Member Functions
	LookupKey (const Slice &user_key, SequenceNumber sequence)
	~LookupKey ()
Slice	memtable_key () const
Slice	internal_key () const
Slice	user_key () const

Private Member Functions
	LookupKey (const LookupKey &)
void	operator= (const LookupKey &)

Private Attributes
const char *	start_
const char *	kstart_
const char *	end_
char	space_ [200]

Detailed Description

Definition at line 189 of file dbformat.h.

Constructor & Destructor Documentation

LookupKey() [1/2]

leveldb::LookupKey::LookupKey	(	const Slice &	user_key,
		SequenceNumber	sequence
	)

Definition at line 121 of file dbformat.cc.

                                                            {
  size_t usize = user_key.size();
  size_t needed = usize + 13;  // A conservative estimate
  char* dst;
  if (needed <= sizeof(space_)) {
    dst = space_;
  } else {
    dst = new char[needed];
  }
  start_ = dst;
  dst = EncodeVarint32(dst, usize + 8);
  kstart_ = dst;
  memcpy(dst, user_key.data(), usize);
  dst += usize;
  EncodeFixed64(dst, PackSequenceAndType(s, kValueTypeForSeek));
  dst += 8;
  end_ = dst;
}

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~LookupKey()

leveldb::LookupKey::~LookupKey ( )

inline

Definition at line 224 of file dbformat.h.

                             {
  if (start_ != space_) delete[] start_;
}

LookupKey() [2/2]

leveldb::LookupKey::LookupKey ( const LookupKey &  )

private

Member Function Documentation

internal_key()

Slice leveldb::LookupKey::internal_key ( ) const

inline

Definition at line 201 of file dbformat.h.

{ return Slice(kstart_, end_ - kstart_); }

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memtable_key()

Slice leveldb::LookupKey::memtable_key ( ) const

inline

Definition at line 198 of file dbformat.h.

{ return Slice(start_, end_ - start_); }

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operator=()

void leveldb::LookupKey::operator= ( const LookupKey &  )

private

user_key()

Slice leveldb::LookupKey::user_key ( ) const

inline

Definition at line 204 of file dbformat.h.

{ return Slice(kstart_, end_ - kstart_ - 8); }

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Member Data Documentation

end_

const char* leveldb::LookupKey::end_

private

Definition at line 216 of file dbformat.h.

kstart_

const char* leveldb::LookupKey::kstart_

private

Definition at line 215 of file dbformat.h.

space_

char leveldb::LookupKey::space_[200]

private

Definition at line 217 of file dbformat.h.

start_

const char* leveldb::LookupKey::start_

private

Definition at line 214 of file dbformat.h.

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

• db/dbformat.h
• db/dbformat.cc