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/*
Copyright (C) 2011 David Robillard
Copyright (C) 2013 Paul Davis
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __JackMetadata__
#define __JackMetadata__
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
// libdb does not work in 32bit mixed mode
#ifdef BUILD_WITH_32_64
#undef HAVE_DB
#define HAVE_DB 0
#endif
#include <stdint.h>
#if HAVE_DB
#include <db.h>
#endif
#include <jack/uuid.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
const char* key;
const char* data;
const char* type;
} jack_property_t;
typedef struct {
jack_uuid_t subject;
uint32_t property_cnt;
jack_property_t* properties;
uint32_t property_size;
} jack_description_t;
typedef enum {
PropertyCreated,
PropertyChanged,
PropertyDeleted
} jack_property_change_t;
typedef void (*JackPropertyChangeCallback)(jack_uuid_t subject,
const char* key,
jack_property_change_t change,
void* arg);
#ifdef __cplusplus
}
#endif
namespace Jack
{
class JackClient;
/*!
\brief Metadata base.
*/
class JackMetadata
{
private:
#if HAVE_DB
DB* fDB;
DB_ENV* fDBenv;
const bool fIsEngine;
#endif
int PropertyInit();
int PropertyChangeNotify(JackClient* client, jack_uuid_t subject, const char* key, jack_property_change_t change);
#if HAVE_DB
void MakeKeyDbt(DBT* dbt, jack_uuid_t subject, const char* key);
#endif
public:
JackMetadata(bool isEngine);
~JackMetadata();
int GetProperty(jack_uuid_t subject, const char* key, char** value, char** type);
int GetProperties(jack_uuid_t subject, jack_description_t* desc);
int GetAllProperties(jack_description_t** descriptions);
int GetDescription(jack_uuid_t subject, jack_description_t* desc);
int GetAllDescriptions(jack_description_t** descs);
void FreeDescription(jack_description_t* desc, int free_actual_description_too);
int SetProperty(JackClient* client, jack_uuid_t subject, const char* key, const char* value, const char* type);
int RemoveProperty(JackClient* client, jack_uuid_t subject, const char* key);
int RemoveProperties(JackClient* client, jack_uuid_t subject);
int RemoveAllProperties(JackClient* client);
};
} // end of namespace
#endif
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