WXP::Hash Class Reference

This class creates and manages generic hash tables. More...

#include "../include/Hash.h"

Public Types
enum	{   STRING , BOOL , INT , FLOAT ,   DATA }

Public Member Functions
	Hash (int rtype, int rsize, int rdata_size, int rnumkey)
	Hash (int rsize, int rdata_size, int rnumkey)
	Hash (int rtype)
	Hash ()
	~Hash ()
int	init ()
int	set (int rtype, int rsize, int rdata_size, int rnumkey)
int	set (int rsize, int rdata_size, int rnumkey)
int	set (int rtype)
int	set ()
int	key (const char *rkey)
int	enter (const char *data,...)
char *	search (int keynum, const char *key)
char *	search (const char *key)
int	searchInt (int keynum, const char *rkey)
int	searchInt (const char *rkey)
int	searchBool (int keynum, const char *rkey)
int	searchBool (const char *rkey)
float	searchFloat (int keynum, const char *rkey)
float	searchFloat (const char *rkey)
int	first ()
char *	next ()
char *	nextKey ()
int	clear ()
int	getSize ()
int	getDataSize ()
int	getNumKey ()
int	getNum ()
int	print ()
int	printData ()
int	printHash ()

Detailed Description

This class creates and manages generic hash tables.

Author

Dan Vietor

Utility

Constructor & Destructor Documentation

Hash() [1/4]

Hash::Hash	(	int	rtype,
		int	rsize,
		int	rdata_size,
		int	rnumkey
	)

Constructor

Parameters

rtype	Type of hash table (STRING, BOOL, INT, FLOAT, DATA)
rsize	Size of hash table (entries)
rdata_size	Size of data to be entered into hash
rnumkey	Number of keys into table

References init(), and set().

Hash() [2/4]

Hash::Hash	(	int	rsize,
		int	rdata_size,
		int	rnumkey
	)

Constructor (STRING)

Parameters

rsize	Size of hash table (entries)
rdata_size	Size of data to be entered into hash
rnumkey	Number of keys into table

References init(), and set().

Hash() [3/4]

Hash::Hash

(

int

rtype

)

Constructor

Parameters

rtype

Type of hash table (STRING, BOOL, INT, FLOAT, DATA)

References init(), and set().

Hash() [4/4]

Hash::Hash

(

)

Constructor (all defaults)

References init(), and set().

~Hash()

Hash::~Hash

(

)

Destructor

Member Function Documentation

clear()

int Hash::clear

(

)

Clears the data in the hash

enter()

int Hash::enter	(	const char *	key1,
			...
	)

Enters a new key into hash table

Parameters

key1	First key
key2	Second key (optional)
key3	Third key (optional)
key4	Fourth key (optional)
data	Data

References WXP::StrLib::acopy(), WXP::StrLib::equal(), and key().

Referenced by WXP::MdrHash::put(), WXP::RcmHash::put(), WXP::SfcHash::put(), WXP::UpaRawinHash::put(), WXP::UpaRawinHash::setup(), WXP::CityHash::setup(), and WXP::DataMath::uniqueId().

first()

int Hash::first

(

)

Resets pointer to beginning of list. Use with next and nextKey methods.

Referenced by WXP::CityHash::first(), WXP::MdrHash::first(), and WXP::MdrHash::print().

init()

int Hash::init

(

)

Initializes the class, resets values and clears out all data

Referenced by Hash(), WXP::CityHash::init(), and set().

key()

int Hash::key

(

const char *

rkey

)

This function returns the index in the hash table based on the hashing function.

Parameters

rkey	String to pass to hash function

Referenced by enter(), search(), searchBool(), searchFloat(), and searchInt().

next()

char * Hash::next

(

)

Moves to next key in list. Order based on ordered entered into table.

Returns

The data value

Referenced by WXP::MdrHash::next(), WXP::RcmHash::next(), WXP::SfcHash::next(), and WXP::MdrHash::print().

nextKey()

char * Hash::nextKey

(

)

Moves to next key in list. Order based on ordered entered into table.

Returns

The key value

Referenced by WXP::CityHash::nextKey().

print()

int Hash::print

(

)

Prints hash table use stats

Referenced by WXP::CityHash::print(), and WXP::CityHash::printData().

printData()

int Hash::printData

(

)

Prints all the data values stored in table.

printHash()

int Hash::printHash

(

)

Prints all the data values stored in table.

search() [1/2]

char * Hash::search

(

const char *

rkey

)

Searches the hash for key (first key)

Parameters

rkey	The key value to search for

References search().

search() [2/2]

char * Hash::search	(	int	keynum,
		const char *	rkey
	)

Searches the hash for data

Parameters

keynum	The key number to use
rkey	The key value to search for

References WXP::StrLib::equal(), and key().

Referenced by WXP::CityHash::get(), WXP::MdrHash::get(), WXP::RcmHash::get(), WXP::SfcHash::get(), WXP::UpaRawinHash::get(), WXP::UpaRawinHash::put(), and search().

searchBool() [1/2]

int Hash::searchBool

(

const char *

rkey

)

Searches the hash for key (first key). Returns boolean value

Parameters

rkey	The key value to search for

Returns

Boolean value stored in hash

References searchBool().

searchBool() [2/2]

int Hash::searchBool	(	int	keynum,
		const char *	rkey
	)

Searches the hash for key. Returns boolean value

Parameters

keynum	The key number to use
rkey	The key value to search for

Returns

Boolean value stored in hash

References WXP::StrLib::equal(), and key().

Referenced by searchBool(), and WXP::DataMath::uniqueId().

searchFloat() [1/2]

float Hash::searchFloat

(

const char *

rkey

)

Searches the hash for key (first key). Returns float value

Parameters

rkey	The key value to search for

Returns

Float value stored in hash

References searchFloat().

searchFloat() [2/2]

float Hash::searchFloat	(	int	keynum,
		const char *	rkey
	)

Searches the hash for key. Returns float value

Parameters

keynum	The key number to use
rkey	The key value to search for

Returns

Float value stored in hash

References WXP::StrLib::equal(), and key().

Referenced by searchFloat().

searchInt() [1/2]

int Hash::searchInt

(

const char *

rkey

)

Searches the hash for key (first key). Returns integer value

Parameters

rkey	The key value to search for

Returns

Integer value stored in hash

References searchInt().

searchInt() [2/2]

int Hash::searchInt	(	int	keynum,
		const char *	rkey
	)

Searches the hash for key. Returns integer value

Parameters

keynum	The key number to use
rkey	The key value to search for

Returns

Integer value stored in hash

References WXP::StrLib::equal(), key(), and WXP::Const::MISS.

Referenced by searchInt().

set() [1/4]

int Hash::set

(

)

Sets up the initial type with all defaults

References set().

Referenced by Hash(), and set().

set() [2/4]

int Hash::set	(	int	rsize,
		int	rdata_size,
		int	rnumkey
	)

Sets up the initial table (STRING)

Parameters

rsize	Size of hash table (entries)
rdata_size	Size of data to be entered into hash
rnumkey	Number of keys into table

References set().

set() [3/4]

int Hash::set

(

int

rtype

)

Sets up the initial table

Parameters

rtype

Type of hash table (STRING, BOOL, INT, FLOAT, DATA)

References set().

set() [4/4]

int Hash::set	(	int	rtype,
		int	rsize,
		int	rdata_size,
		int	rnumkey
	)

Sets up the initial table

Parameters

rtype	Type of hash table (STRING, BOOL, INT, FLOAT, DATA)
rsize	Size of hash table (entries)
rdata_size	Size of data to be entered into hash
rnumkey	Number of keys into table

References init().

Referenced by WXP::MdrHash::init(), WXP::UpaRawinHash::setup(), and WXP::CityHash::setup().

---

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

• Hash.h
• Hash.cc