Scan context information. More...

#include <ScanContext.h>

Collaboration diagram for Hypertable::ScanContext:

Public Types
typedef std::set< const char *, LtCstr, CstrAlloc >	CstrRowSet

Public Member Functions
	ScanContext (int64_t rev, const ScanSpec ss, const RangeSpec range, SchemaPtr &schema, std::set< uint8_t > *columns=0)
	Constructor. More...

	ScanContext (int64_t rev, SchemaPtr &schema)
	Constructor. More...

	ScanContext (int64_t rev=TIMESTAMP_MAX)
	Constructor. More...

	ScanContext (SchemaPtr &schema)
	Constructor. More...

	~ScanContext ()

void	deep_copy_specs ()

Public Attributes
SchemaPtr	schema

const ScanSpec *	spec

ScanSpecBuilder	scan_spec_builder

const RangeSpec *	range

RangeSpecManaged	range_managed

DynamicBuffer	dbuf

SerializedKey	start_serkey

SerializedKey	end_serkey

Key	start_key

Key	end_key

String	start_row

String	end_row

String	start_qualifier

String	end_qualifier

bool	start_inclusive

bool	end_inclusive

bool	single_row

bool	has_cell_interval

bool	has_start_cf_qualifier

bool	restricted_range

int64_t	revision

pair< int64_t, int64_t >	time_interval

bool	family_mask [256]

vector< CellPredicate >	cell_predicates

RE2 *	row_regexp

RE2 *	value_regexp

CstrRowSet	rowset

uint32_t	timeout_ms

Private Member Functions
void	initialize (int64_t rev, const ScanSpec ss, const RangeSpec range, SchemaPtr &sp, std::set< uint8_t > *columns=0)
	Initializes the scan context. More...

	ScanContext (const ScanContext &)
	Disable copy ctor and assignment op. More...

ScanContext &	operator= (const ScanContext &)

Private Attributes
CharArena	arena

Detailed Description

Scan context information.

Definition at line 52 of file ScanContext.h.

Member Typedef Documentation

typedef std::set<const char *, LtCstr, CstrAlloc> Hypertable::ScanContext::CstrRowSet

Definition at line 75 of file ScanContext.h.

Constructor & Destructor Documentation

Hypertable::ScanContext::ScanContext	(	int64_t	rev,
		const ScanSpec *	ss,
		const RangeSpec *	range,
		SchemaPtr &	schema,
		std::set< uint8_t > *	columns = `0`
	)

inline

Constructor.

Parameters

rev	scan revision
ss	scan specification
range	range specification
schema	smart pointer to schema object
columns	Vector of column identifiers

Definition at line 88 of file ScanContext.h.

Hypertable::ScanContext::ScanContext	(	int64_t	rev,
		SchemaPtr &	schema
	)

inline

Constructor.

Parameters

rev	scan revision
schema	smart pointer to schema object

Definition at line 100 of file ScanContext.h.

Hypertable::ScanContext::ScanContext ( int64_t rev = TIMESTAMP_MAX )

inline

Constructor.

Calls initialize() with an empty schema pointer.

Parameters

rev	scan revision

Definition at line 110 of file ScanContext.h.

Hypertable::ScanContext::ScanContext ( SchemaPtr & schema )

inline

Constructor.

Parameters

schema smart pointer to schema object

Definition at line 121 of file ScanContext.h.

Hypertable::ScanContext::~ScanContext ( )

inline

Definition at line 126 of file ScanContext.h.

Hypertable::ScanContext::ScanContext ( const ScanContext & )

private

Disable copy ctor and assignment op.

Member Function Documentation

void Hypertable::ScanContext::deep_copy_specs ( )

inline

Definition at line 135 of file ScanContext.h.

void ScanContext::initialize	(	int64_t	rev,
		const ScanSpec *	ss,
		const RangeSpec *	range,
		SchemaPtr &	sp,
		std::set< uint8_t > *	columns = `0`
	)

private

Initializes the scan context.

Sets up the family_mask filter that allows for quick lookups to see if a family is included in the scan. Also sets up cell_predicates entries for the column families that are included in the scan which contains cell garbage collection info for each family (e.g. cutoff timestamp and number of copies to keep). Also sets up end_row to be the last possible key in spec->end_row.

Parameters

rev	scan revision
ss	scan specification
range	range specifier
sp	shared pointer to schema object
columns	Pointer to column family ID set to be populated

Create Start Key and End Key

Get row, value regexps and row set

Definition at line 47 of file ScanContext.cc.

ScanContext& Hypertable::ScanContext::operator= ( const ScanContext & )

private

Member Data Documentation

CharArena Hypertable::ScanContext::arena

private

Definition at line 166 of file ScanContext.h.

vector<CellPredicate> Hypertable::ScanContext::cell_predicates

Definition at line 72 of file ScanContext.h.

DynamicBuffer Hypertable::ScanContext::dbuf

Definition at line 59 of file ScanContext.h.

bool Hypertable::ScanContext::end_inclusive

Definition at line 64 of file ScanContext.h.

Key Hypertable::ScanContext::end_key

Definition at line 61 of file ScanContext.h.

String Hypertable::ScanContext::end_qualifier

Definition at line 63 of file ScanContext.h.

String Hypertable::ScanContext::end_row

Definition at line 62 of file ScanContext.h.

SerializedKey Hypertable::ScanContext::end_serkey

Definition at line 60 of file ScanContext.h.

bool Hypertable::ScanContext::family_mask[256]

Definition at line 71 of file ScanContext.h.

bool Hypertable::ScanContext::has_cell_interval

Definition at line 66 of file ScanContext.h.

bool Hypertable::ScanContext::has_start_cf_qualifier

Definition at line 67 of file ScanContext.h.

const RangeSpec* Hypertable::ScanContext::range

Definition at line 57 of file ScanContext.h.

RangeSpecManaged Hypertable::ScanContext::range_managed

Definition at line 58 of file ScanContext.h.

bool Hypertable::ScanContext::restricted_range

Definition at line 68 of file ScanContext.h.

int64_t Hypertable::ScanContext::revision

Definition at line 69 of file ScanContext.h.

RE2* Hypertable::ScanContext::row_regexp

Definition at line 73 of file ScanContext.h.

CstrRowSet Hypertable::ScanContext::rowset

Definition at line 76 of file ScanContext.h.

ScanSpecBuilder Hypertable::ScanContext::scan_spec_builder

Definition at line 56 of file ScanContext.h.

SchemaPtr Hypertable::ScanContext::schema

Definition at line 54 of file ScanContext.h.

bool Hypertable::ScanContext::single_row

Definition at line 65 of file ScanContext.h.

const ScanSpec* Hypertable::ScanContext::spec

Definition at line 55 of file ScanContext.h.

bool Hypertable::ScanContext::start_inclusive

Definition at line 64 of file ScanContext.h.

Key Hypertable::ScanContext::start_key

Definition at line 61 of file ScanContext.h.

String Hypertable::ScanContext::start_qualifier

Definition at line 63 of file ScanContext.h.

String Hypertable::ScanContext::start_row

Definition at line 62 of file ScanContext.h.

SerializedKey Hypertable::ScanContext::start_serkey

Definition at line 60 of file ScanContext.h.

pair<int64_t, int64_t> Hypertable::ScanContext::time_interval

Definition at line 70 of file ScanContext.h.

uint32_t Hypertable::ScanContext::timeout_ms

Definition at line 77 of file ScanContext.h.

RE2* Hypertable::ScanContext::value_regexp

Definition at line 74 of file ScanContext.h.

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

/home/doug/src/hypertable/src/cc/Hypertable/RangeServer/ScanContext.h
/home/doug/src/hypertable/src/cc/Hypertable/RangeServer/ScanContext.cc

Public Types

Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation