////////////////////////////////////////////////////////////////////////////////
/// @brief In-query functions
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2010-2012 triagens GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Jan Steemann
/// @author Copyright 2012, triagens GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

#ifndef TRIAGENS_DURHAM_VOC_BASE_QUERY_FUNCTIONS_H
#define TRIAGENS_DURHAM_VOC_BASE_QUERY_FUNCTIONS_H 1

#include <BasicsC/common.h>
#include <BasicsC/associative.h>
#include <BasicsC/hashes.h>
#include <BasicsC/strings.h>

#ifdef __cplusplus
extern "C" {
#endif

////////////////////////////////////////////////////////////////////////////////
/// @addtogroup VocBase
/// @{
////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
/// @brief query function data structure
////////////////////////////////////////////////////////////////////////////////

typedef struct TRI_query_function_s {
  char* _externalName;
  char* _internalName;
  int _minArgs;
  int _maxArgs;
}
TRI_query_function_t;

////////////////////////////////////////////////////////////////////////////////
/// @brief initialise the array with the function declarations 
////////////////////////////////////////////////////////////////////////////////

TRI_associative_pointer_t* TRI_InitialiseQueryFunctions (void);

////////////////////////////////////////////////////////////////////////////////
/// @brief free the array with the function declarations 
////////////////////////////////////////////////////////////////////////////////

void TRI_FreeQueryFunctions (TRI_associative_pointer_t*);

////////////////////////////////////////////////////////////////////////////////
/// @brief check if a function name is valid
////////////////////////////////////////////////////////////////////////////////

bool TRI_IsValidQueryFunction (TRI_associative_pointer_t*, const char* const);

////////////////////////////////////////////////////////////////////////////////
/// @brief get internal function name for an external one
////////////////////////////////////////////////////////////////////////////////

char* TRI_GetInternalNameQueryFunction (TRI_associative_pointer_t*, const char* const);

////////////////////////////////////////////////////////////////////////////////
/// @brief register a function name
////////////////////////////////////////////////////////////////////////////////

bool TRI_RegisterQueryFunction (TRI_associative_pointer_t*, 
                                const char* const, 
                                const char* const, 
                                const int, 
                                const int);

////////////////////////////////////////////////////////////////////////////////
/// @}
////////////////////////////////////////////////////////////////////////////////

#ifdef __cplusplus
}
#endif

#endif

// Local Variables:
// mode: outline-minor
// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
// End: