ConnectionProvider::ConnectionSchemeCache Class Reference

Connection provider type cache class. More...

Static Public Member Methods
static bool	empty ()
	Returns True if the cache is empty, False if not.
static hash< string, hash< ConnectionSchemeInfo > >	get ()
	Returns the entire cache.
static *hash< ConnectionSchemeInfo >	getScheme (string scheme)
	Returns info for the given connection scheme or NOTHING if not present. More...
static hash< ConnectionSchemeInfo >	getSchemeEx (string scheme)
	Returns info for the given connection scheme or throws an exception if not present. More...
static *hash< ConnectionSchemeInfo >	getSchemeImpl (string scheme, bool throw_exception, *code scheme_loader)
	Returns info for the given connection scheme; either throws an exception if not present or returns NOTHING. More...
static *list< string >	listSchemes ()
	Returns a list of all cached schemes.
static bool	registerScheme (string scheme, hash< ConnectionSchemeInfo > entry)
	Register a new connection provider in the cache. More...
static int	size ()
	Returns the number of types in the cache.

Public Attributes
const	SchemeMap
	Map of known connection schemes to modules.

Static Private Member Methods
static Mutex	lck ()
	Connection provider cache lock.
static bool	tryLoadModule (string mod, bool throw_exception)
	Try to load the given module.

Static Private Attributes
static hash< string, hash< ConnectionSchemeInfo > >	cache
	Connection provider cache.

Detailed Description

Connection provider type cache class.

Member Function Documentation

getScheme()

static *hash<ConnectionSchemeInfo> ConnectionProvider::ConnectionSchemeCache::getScheme ( string  scheme )

static

Returns info for the given connection scheme or NOTHING if not present.

Parameters

scheme

the scheme for the connection

Returns

info for the given connection scheme; NOTHING is returned if the scheme is not registered

getSchemeEx()

static hash<ConnectionSchemeInfo> ConnectionProvider::ConnectionSchemeCache::getSchemeEx ( string  scheme )

static

Returns info for the given connection scheme or throws an exception if not present.

Parameters

scheme

the scheme for the connection provider

Returns

info for the given connection scheme; an exception is thrown if the scheme is unknown

Exceptions

SCHEME-ERROR

the scheme is unknown

getSchemeImpl()

static *hash<ConnectionSchemeInfo> ConnectionProvider::ConnectionSchemeCache::getSchemeImpl ( string  scheme, bool  throw_exception, *code  scheme_loader  )

static

Returns info for the given connection scheme; either throws an exception if not present or returns NOTHING.

Parameters

scheme	the scheme for the connection provider
throw_exception	if True then an exception is thrown if the scheme cannot be resolved, otherwise NOTHING is returned
scheme_loader	a closure taking a string scheme argument and returning *hash<ConnectionSchemeInfo>

Returns

info for the given connection scheme or NOTHING is returned if the scheme cannot be resolved and the throw_exception argument is False

Exceptions

SCHEME-ERROR

the scheme is unknown; only thrown if the throw_exception argument is True

registerScheme()

static bool ConnectionProvider::ConnectionSchemeCache::registerScheme ( string  scheme, hash< ConnectionSchemeInfo >  entry  )

static

Register a new connection provider in the cache.

Parameters

scheme	the scheme for the connection provider
entry	the new connection provider entry

Returns

True if the connection was reigstered, False if there is already a registered connection with this scheme