Config.h

Go to the documentation of this file.

/*  Copyright (C) 2003-2021 Free Electron Organization
    Any use of this software requires a license.  If a valid license
    was not distributed with this file, visit freeelectron.org. */

/** @file */

#ifndef __data_Config_h__
#define __data_Config_h__

#include "ConfigI.h"

namespace fe
{
namespace ext
{

/** Convienience base class for specification and use of path accessors.
    */
class FE_DL_EXPORT Config : virtual public ConfigI
{
    public:
                Config(void);
virtual         ~Config(void);


        template <typename T>
            T       &cfg(const String &a_key);

virtual     void    configParent(sp<ConfigI> a_parent);
virtual     bool    configLookup(const String &a_key, Instance &a_instance);

virtual     void    configSet(const String &a_key, Instance &a_instance);
virtual     void    configSet(const String &a_key, Record &a_record,
                        const String &a_attr);

    private:
        //std::map<String, String>      m_dictionary;
        sp<ConfigI>                     m_parent;
        std::map<String, Instance>      m_catalog;
};

template <typename T>
T &Config::cfg(const String &a_key)
{
    Instance instance;
    bool preexists = configLookup(a_key, instance);

    if(preexists)
    {
        return instance.cast<T>();
    }

    if(!registry().isValid())
    {
        feX("Config Components must be created so as to have a registry");
    }
    const sp<TypeMaster> &spTM = registry()->master()->typeMaster();
    Instance &new_instance = m_catalog[a_key];
    new_instance.create<T>(spTM);
    return new_instance.cast<T>();
}

} /* namespace ext */
} /* namespace fe */

#endif /* __data_Config_h__ */