obitools3/src/obidmscolumn_idx.h

/****************************************************************************
 * OBIDMS_column_idx header file                                            *
 ****************************************************************************/

/**
 * @file obidsmcolumn_idx.h
 * @author Celine Mercier
 * @date February 14th 2016
 * @brief Header file for the functions handling OBIColumns containing data with the OBIType OBI_IDX.
 *
 * Note: OBI_IDX columns contain indices referring to data stored elsewhere
 *		 (for example lines in other columns) and contain only one element (index) per line.
 */


#ifndef OBIDMSCOLUMN_IDX_H_
#define OBIDMSCOLUMN_IDX_H_


#include <stdlib.h>
#include <stdio.h>

#include "obidmscolumn.h"
#include "obitypes.h"


/**
 * @brief Sets a value in an OBIDMS column containing data with the type OBI_IDX.
 *
 *	Note: OBI_IDX columns contain indices referring to data stored elsewhere
 *		  (for example lines in other columns) and contain only one element (index) per line.
 *
 * @warning Pointers returned by obi_open_column() don't allow writing.
 *
 * @param column A pointer as returned by obi_create_column() or obi_clone_column().
 * @param line_nb The number of the line where the value should be set.
 * @param value The value that should be set.
 *
 * @returns An integer value indicating the success of the operation.
 * @retval 0 on success.
 * @retval -1 if an error occurred.
 *
 * @since February 2016
 * @author Celine Mercier (celine.mercier@metabarcoding.org)
 */
int obi_column_set_index(OBIDMS_column_p column, index_t line_nb, index_t value);


/**
 * @brief Recovers a value in an OBIDMS column containing data with the type OBI_IDX.
 *
 *	Note: OBI_IDX columns contain indices referring to data stored elsewhere
 *		  (for example lines in other columns) and contain only one element (index) per line.
 *
 * @param column A pointer as returned by obi_create_column() or obi_clone_column().
 * @param line_nb The number of the line where the value should be recovered.
 *
 * @returns The recovered value.
 * @retval OBIIdx_NA the NA value of the type if an error occurred and obi_errno is set.
 *
 * @since February 2016
 * @author Celine Mercier (celine.mercier@metabarcoding.org)
 */
index_t obi_column_get_index(OBIDMS_column_p column, index_t line_nb);


#endif /* OBIDMSCOLUMN_IDX_H_ */