Elektra  0.8.19
Public Types | Public Member Functions | Static Public Member Functions
kdb::tools::PluginDatabase Class Referenceabstract

Loads all plugins and allows us to query them. More...

#include <plugindatabase.hpp>

Inheritance diagram for kdb::tools::PluginDatabase:
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Public Types

enum  Status { provides, real, missing }
 

Public Member Functions

virtual std::vector< std::string > listAllPlugins () const =0
 list all plugins More...
 
virtual std::string lookupInfo (PluginSpec const &whichplugin, std::string const &which) const =0
 lookup contract clauses or dynamic information More...
 
virtual func_t getSymbol (PluginSpec const &whichplugin, std::string const &which) const =0
 get exported plugin symbol More...
 
virtual PluginSpec lookupMetadata (std::string const &which) const =0
 lookup which plugin handles metadata More...
 
virtual PluginSpec lookupProvides (std::string const &provides) const =0
 lookup which plugin is a provider for that plugin More...
 
virtual std::map< int, PluginSpeclookupAllProvidesWithStatus (std::string const &provides) const =0
 looks up all plugins which are a suitable provider More...
 
virtual std::vector< PluginSpeclookupAllProvides (std::string const &provides) const =0
 looks up all plugins which are a suitable provider More...
 

Static Public Member Functions

static int calculateStatus (std::string statusString)
 

Detailed Description

Loads all plugins and allows us to query them.

Member Enumeration Documentation

Enumerator
provides 

does not directly, but can be loaded via provides

real 

exists and working as given

missing 

does not exist or cannot be loaded

Member Function Documentation

int kdb::tools::PluginDatabase::calculateStatus ( std::string  statusString)
static
Parameters
statusStringthe string encoding the status
Returns
The representing number for a given status.
virtual func_t kdb::tools::PluginDatabase::getSymbol ( PluginSpec const &  whichplugin,
std::string const &  which 
) const
pure virtual

get exported plugin symbol

Parameters
whichpluginfrom which plugin?
whichwhich symbol would you like to look up?
Returns
the function pointer to the exported symbol or NULL if the symbol was not found

Implemented in kdb::tools::MockPluginDatabase, and kdb::tools::ModulesPluginDatabase.

virtual std::vector<std::string> kdb::tools::PluginDatabase::listAllPlugins ( ) const
pure virtual

list all plugins

If Elektra is compiled with plugins, it will search for shared libraries. In any case, if no shared libraries were found it will fallback to an internal list (plugins that were compiled together with Elektra).

Returns
a list of all available plugins

Implemented in kdb::tools::MockPluginDatabase, and kdb::tools::ModulesPluginDatabase.

virtual std::vector<PluginSpec> kdb::tools::PluginDatabase::lookupAllProvides ( std::string const &  provides) const
pure virtual

looks up all plugins which are a suitable provider

Note
in case a plugin name is provided, the plugin with the name will also be part of the result. But if there are other plugins providing the requirement, then they will also be part of the result. The ordering of the resulting vector has no special meaning.
Parameters
providesis the provider to find
Returns
a vector of plugins offering the requirement or are named after it

Implemented in kdb::tools::ModulesPluginDatabase.

virtual std::map<int, PluginSpec> kdb::tools::PluginDatabase::lookupAllProvidesWithStatus ( std::string const &  provides) const
pure virtual

looks up all plugins which are a suitable provider

Note
in case a plugin name is provided, the plugin with the name will also be part of the result. But if there are other plugins providing the requirement, then they will also be part of the result.
Parameters
providesis the provider to find
Returns
a map of plugins with their status offering the requirement or are named after it

Implemented in kdb::tools::ModulesPluginDatabase.

virtual std::string kdb::tools::PluginDatabase::lookupInfo ( PluginSpec const &  whichplugin,
std::string const &  which 
) const
pure virtual

lookup contract clauses or dynamic information

Parameters
whichpluginabout which plugin?
whichabout which clause in the contract?
Returns
the clause of the contract

Implemented in kdb::tools::MockPluginDatabase, and kdb::tools::ModulesPluginDatabase.

virtual PluginSpec kdb::tools::PluginDatabase::lookupMetadata ( std::string const &  which) const
pure virtual

lookup which plugin handles metadata

Parameters
whichthe metadata of interest
Returns
the best suited plugin specification which provides it

Implemented in kdb::tools::ModulesPluginDatabase.

virtual PluginSpec kdb::tools::PluginDatabase::lookupProvides ( std::string const &  provides) const
pure virtual

lookup which plugin is a provider for that plugin

Note
will return a PluginSpec with getName() == provides if the string provides actually is a plugin name.
Parameters
providesis the provider to find
Exceptions
NoPluginif no plugin that provides the functionality could be found
Returns
the plugin itself or the best suited plugin specification which provides it

Implemented in kdb::tools::ModulesPluginDatabase.


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