Qore ConnectionProvider Module Reference  1.4
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< ConnectionSchemeInfogetScheme (string scheme)
 Returns info for the given connection scheme or NOTHING if not present. More...
 
static hash< ConnectionSchemeInfogetSchemeEx (string scheme)
 Returns info for the given connection scheme or throws an exception if not present. More...
 
static *hash< ConnectionSchemeInfogetSchemeImpl (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< stringlistSchemes ()
 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
schemethe 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
schemethe scheme for the connection provider
Returns
info for the given connection scheme; an exception is thrown if the scheme is unknown
Exceptions
SCHEME-ERRORthe 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
schemethe scheme for the connection provider
throw_exceptionif True then an exception is thrown if the scheme cannot be resolved, otherwise NOTHING is returned
scheme_loadera 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-ERRORthe 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
schemethe scheme for the connection provider
entrythe new connection provider entry
Returns
True if the connection was reigstered, False if there is already a registered connection with this scheme