/*
 * Please do not edit this file.
 * It was generated using rpcgen.
 */

#ifndef _DB_SCHEME_H_RPCGEN
#define	_DB_SCHEME_H_RPCGEN

#include <rpc/rpc.h>
#ifndef _DB_SCHEMA_H
#define _DB_SCHEMA_H
#include "db_item.h"
#include "db_entry.h"
#define	DB_KEY_CASE TA_CASE

#include "nisdb_rw.h"

/* Positional information of where field starts within record 
   and its maximum length in terms of bytes. */

struct db_posn_info {
	short start_column;
	short max_len;
};
typedef struct db_posn_info db_posn_info;
/* Description of a key */

struct db_key_desc {
	item *key_name;
	u_long key_flags;
	int column_number;
	db_posn_info where;
	short store_type;
};
typedef struct db_key_desc db_key_desc;
/* Description of the data field. */

struct db_data_desc {
	db_posn_info where;
	short store_type;
};
typedef struct db_data_desc db_data_desc;
/* A scheme is a description of the fields of a table. */

class db_scheme {
 protected:
  struct {
	int keys_len;
	db_key_desc *keys_val;
  } keys;
  short int max_columns;  /* applies to data only ? */
  db_data_desc data;
  STRUCTRWLOCK(scheme);

 public:
/* Accessor: return number of keys in scheme. */
  int numkeys() { return keys.keys_len; }

/* Accessor:  return location of array of key_desc's. */
  db_key_desc* keyloc () { return keys.keys_val; }
  
/* Constructor:  create empty scheme */
  db_scheme() {
	keys.keys_len = 0;
	keys.keys_val = NULL;
	(void) __nisdb_rwinit(&scheme_rwlock);
  }

/* Constructor:  create new scheme by making copy of 'orig'.
   All items within old scheme are also copied (i.e. no shared pointers). */
  db_scheme( db_scheme* orig );

/* Constructor:  create new sheme by using information in 'zdesc'. */
  db_scheme( table_obj * );

/* Destructor:  delete all keys associated with scheme and scheme itself. */
  ~db_scheme();

/* Free space occupied by columns. */
  void clear_columns( int );

/* Predicate:  return whether given string is one of the index names
   of this scheme.  If so, return in 'result' the index's number. */
  bool_t find_index( char*, int* );

/* Print out description of table. */
  void print();

/* Size of the non-MT/LDAP portion of the db_scheme structure */
  ulong_t oldstructsize(void) {
	return ((ulong_t)&(this->scheme_rwlock) - (ulong_t)this);
  }

/* Locking methods */

  int acqexcl(void) {
	return (WLOCK(scheme));
  }

  int relexcl(void) {
	return (WULOCK(scheme));
  }

  int acqnonexcl(void) {
	return (RLOCK(scheme));
  }

  int relnonexcl(void) {
	return (RULOCK(scheme));
  }
};
typedef class db_scheme * db_scheme_p;
#endif /* _DB_SCHEMA_H */

/* the xdr functions */
extern bool_t xdr_db_posn_info();
extern bool_t xdr_db_key_desc();
extern bool_t xdr_db_data_desc();

#endif /* !_DB_SCHEME_H_RPCGEN */