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/* OpenLDAP WiredTiger backend */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 2002-2022 The OpenLDAP Foundation.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted only as authorized by the OpenLDAP
 * Public License.
 *
 * A copy of this license is available in the file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
 */
/* ACKNOWLEDGEMENTS:
 * This work was developed by HAMANO Tsukasa <hamano@osstech.co.jp>
 * based on back-bdb for inclusion in OpenLDAP Software.
 * WiredTiger is a product of MongoDB Inc.
 */

#include "portable.h"

#include <stdio.h>
#include <ac/string.h>

#include "back-wt.h"
#include "slap-config.h"

int
wt_hasSubordinates(
	Operation *op,
	Entry *e,
	int *hasSubordinates )
{
	struct wt_info *wi = (struct wt_info *) op->o_bd->be_private;
	wt_ctx *wc = NULL;
	int rc;

	assert( e != NULL );

	wc = wt_ctx_get(op, wi);
	if( !wc ){
		Debug( LDAP_DEBUG_ANY,
			   "wt_hasSubordinates: wt_ctx_get failed\n" );
		return LDAP_OTHER;
	}

	rc = wt_dn2id_has_children(op, wc, e->e_id);
	switch(rc){
	case 0:
		*hasSubordinates = LDAP_COMPARE_TRUE;
		break;
	case WT_NOTFOUND:
		*hasSubordinates = LDAP_COMPARE_FALSE;
		rc = LDAP_SUCCESS;
		break;
	default:
		Debug(LDAP_DEBUG_ANY,
			  "<=- wt_hasSubordinates: has_children failed: %s (%d)\n",
			  wiredtiger_strerror(rc), rc );
		rc = LDAP_OTHER;
	}
	return rc;
}

/*
 * sets the supported operational attributes (if required)
 */
int
wt_operational(
	Operation *op,
	SlapReply *rs )
{
	Attribute   **ap;

	assert( rs->sr_entry != NULL );

	for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next ) {
		if ( (*ap)->a_desc == slap_schema.si_ad_hasSubordinates ) {
			break;
		}
	}

	if ( *ap == NULL &&
		 attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_hasSubordinates ) == NULL &&
		 ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
		   ad_inlist( slap_schema.si_ad_hasSubordinates, rs->sr_attrs ) ) )
	{
		int hasSubordinates, rc;

		rc = wt_hasSubordinates( op, rs->sr_entry, &hasSubordinates );
		if ( rc == LDAP_SUCCESS ) {
			*ap = slap_operational_hasSubordinate( hasSubordinates == LDAP_COMPARE_TRUE );
			assert( *ap != NULL );

			ap = &(*ap)->a_next;
		}
	}

	return LDAP_SUCCESS;
}

/*
 * Local variables:
 * indent-tabs-mode: t
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 */