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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights.  These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

//! [0]
SELECT forename, surname FROM people;
//! [0]


//! [1]
QSqlQuery q("select * from employees");
QSqlRecord rec = q.record();

qDebug() << "Number of columns: " << rec.count();

int nameCol = rec.indexOf("name"); // index of the field "name"
while (q.next())
    qDebug() << q.value(nameCol).toString(); // output all names
//! [1]


//! [2]
QSqlQuery q;
q.prepare("insert into myTable values (?, ?)");

QVariantList ints;
ints << 1 << 2 << 3 << 4;
q.addBindValue(ints);

QVariantList names;
names << "Harald" << "Boris" << "Trond" << QVariant(QVariant::String);
q.addBindValue(names);

if (!q.execBatch())
    qDebug() << q.lastError();
//! [2]


//! [3]
1  Harald
2  Boris
3  Trond
4  NULL
//! [3]
n142'>142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:	H5Gdeprec.c
 *		June 21 2006
 *		James Laird
 *
 * Purpose:	Deprecated functions from the H5G interface.  These
 *              functions are here for compatibility purposes and may be
 *              removed in the future.  Applications should switch to the
 *              newer APIs.
 *
 *-------------------------------------------------------------------------
 */

/****************/
/* Module Setup */
/****************/

#include "H5Gmodule.h" /* This source code file is part of the H5G module */

/***********/
/* Headers */
/***********/
#include "H5private.h"   /* Generic Functions			*/
#include "H5ACprivate.h" /* Metadata cache			*/
#include "H5CXprivate.h" /* API Contexts                         */
#include "H5Eprivate.h"  /* Error handling		  	*/
#include "H5Gpkg.h"      /* Groups		  		*/
#include "H5Iprivate.h"  /* IDs			  		*/
#include "H5Lprivate.h"  /* Links                                */
#include "H5Pprivate.h"  /* Property lists                       */
#include "H5VLprivate.h" /* Virtual Object Layer                 */

#include "H5VLnative_private.h" /* Native VOL connector                     */

/****************/
/* Local Macros */
/****************/

/******************/
/* Local Typedefs */
/******************/

#ifndef H5_NO_DEPRECATED_SYMBOLS
/* User data for path traversal routine for getting object info */
typedef struct {
    H5G_stat_t *statbuf;     /* Stat buffer about object */
    hbool_t     follow_link; /* Whether we are following a link or not */
    H5F_t *     loc_file;    /* Pointer to the file the location is in */
} H5G_trav_goi_t;

/********************/
/* Package Typedefs */
/********************/

/********************/
/* Local Prototypes */
/********************/
static herr_t H5G__get_objinfo_cb(H5G_loc_t *grp_loc /*in*/, const char *name, const H5O_link_t *lnk,
                                  H5G_loc_t *obj_loc, void *_udata /*in,out*/,
                                  H5G_own_loc_t *own_loc /*out*/);
#endif /* H5_NO_DEPRECATED_SYMBOLS */

/*********************/
/* Package Variables */
/*********************/

/*****************************/
/* Library Private Variables */
/*****************************/

/*******************/
/* Local Variables */
/*******************/

#ifndef H5_NO_DEPRECATED_SYMBOLS

/*-------------------------------------------------------------------------
 * Function:	H5G_map_obj_type
 *
 * Purpose:	Maps the object type to the older "group" object type
 *
 * Return:	Object type (can't fail)
 *
 * Programmer:	Quincey Koziol
 *              Tuesday, November 21, 2006
 *
 *-------------------------------------------------------------------------
 */
H5G_obj_t
H5G_map_obj_type(H5O_type_t obj_type)
{
    H5G_obj_t ret_value = H5G_UNKNOWN; /* Return value */

    /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
    FUNC_ENTER_NOAPI_NOINIT_NOERR

    /* Map object type to older "group" object type */
    switch (obj_type) {
        case H5O_TYPE_GROUP:
            ret_value = H5G_GROUP;
            break;

        case H5O_TYPE_DATASET:
            ret_value = H5G_DATASET;
            break;

        case H5O_TYPE_NAMED_DATATYPE:
            ret_value = H5G_TYPE;
            break;

        case H5O_TYPE_MAP:
            /* Maps not supported in native VOL connector */

        case H5O_TYPE_UNKNOWN:
        case H5O_TYPE_NTYPES:
        default:
            ret_value = H5G_UNKNOWN;
    } /* end switch */

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_map_obj_type() */

/*-------------------------------------------------------------------------
 * Function:	H5Gcreate1
 *
 * Purpose:	Creates a new group relative to LOC_ID and gives it the
 *		specified NAME.  The group is opened for write access
 *		and it's object ID is returned.
 *
 *		The SIZE_HINT parameter specifies how much file space to reserve
 *		to store the names that will appear in this group. This number
 *		must be less than or equal to UINT32_MAX. If zero is supplied
 *		for the SIZE_HINT then a default size is chosen.
 *
 * Note:	Deprecated in favor of H5Gcreate2
 *
 * Return:	Success:	The object ID of a new, empty group open for
 *				writing.  Call H5Gclose() when finished with
 *				the group.
 *
 *		Failure:	H5I_INVALID_HID
 *
 * Programmer:	Robb Matzke
 *		Wednesday, September 24, 1997
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Gcreate1(hid_t loc_id, const char *name, size_t size_hint)
{
    void *            grp = NULL; /* New group created */
    H5VL_object_t *   vol_obj;    /* Object of loc_id */
    H5VL_loc_params_t loc_params;
    hid_t             tmp_gcpl  = H5I_INVALID_HID; /* Temporary group creation property list */
    hid_t             ret_value = H5I_INVALID_HID; /* Return value */

    FUNC_ENTER_API(H5I_INVALID_HID)
    H5TRACE3("i", "i*sz", loc_id, name, size_hint);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, H5I_INVALID_HID, "no name given")
    if (size_hint > UINT32_MAX)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, H5I_INVALID_HID, "size_hint cannot be larger than UINT32_MAX")

    /* Check if we need to create a non-standard GCPL */
    if (size_hint > 0) {
        H5O_ginfo_t     ginfo;    /* Group info property */
        H5P_genplist_t *gc_plist; /* Property list created */

        /* Get the default property list */
        if (NULL == (gc_plist = (H5P_genplist_t *)H5I_object(H5P_GROUP_CREATE_DEFAULT)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a property list")

        /* Make a copy of the default property list */
        if ((tmp_gcpl = H5P_copy_plist(gc_plist, FALSE)) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTGET, H5I_INVALID_HID, "unable to copy the creation property list")

        /* Get pointer to the copied property list */
        if (NULL == (gc_plist = (H5P_genplist_t *)H5I_object(tmp_gcpl)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "not a property list")

        /* Get the group info property */
        if (H5P_get(gc_plist, H5G_CRT_GROUP_INFO_NAME, &ginfo) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, H5I_INVALID_HID, "can't get group info")

        /* Set the non-default local heap size hint */
        H5_CHECKED_ASSIGN(ginfo.lheap_size_hint, uint32_t, size_hint, size_t);
        if (H5P_set(gc_plist, H5G_CRT_GROUP_INFO_NAME, &ginfo) < 0)
            HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, H5I_INVALID_HID, "can't set group info")
    }
    else
        tmp_gcpl = H5P_GROUP_CREATE_DEFAULT;

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, H5I_INVALID_HID, "can't set collective metadata read info")

    /* Set location parameters */
    loc_params.type     = H5VL_OBJECT_BY_SELF;
    loc_params.obj_type = H5I_get_type(loc_id);

    /* get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "invalid location identifier")

    /* Create the group */
    if (NULL ==
        (grp = H5VL_group_create(vol_obj, &loc_params, name, H5P_LINK_CREATE_DEFAULT, tmp_gcpl,
                                 H5P_GROUP_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL)))
        HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5I_INVALID_HID, "unable to create group")

    /* Get an ID for the group */
    if ((ret_value = H5VL_register(H5I_GROUP, grp, vol_obj->connector, TRUE)) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to register group")

done:
    if (H5I_INVALID_HID != tmp_gcpl && tmp_gcpl != H5P_GROUP_CREATE_DEFAULT)
        if (H5I_dec_ref(tmp_gcpl) < 0)
            HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, H5I_INVALID_HID, "unable to release property list")

    if (H5I_INVALID_HID == ret_value)
        if (grp && H5VL_group_close(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, H5I_INVALID_HID, "unable to release group")

    FUNC_LEAVE_API(ret_value)
} /* end H5Gcreate1() */

/*-------------------------------------------------------------------------
 * Function:	H5Gopen1
 *
 * Purpose:	Opens an existing group for modification.  When finished,
 *		call H5Gclose() to close it and release resources.
 *
 * Note:	Deprecated in favor of H5Gopen2
 *
 * Return:	Success:	Object ID of the group.
 *
 *		Failure:	H5I_INVALID_HID
 *
 * Programmer:	Robb Matzke
 *		Wednesday, December 31, 1997
 *
 *-------------------------------------------------------------------------
 */
hid_t
H5Gopen1(hid_t loc_id, const char *name)
{
    void *            grp     = NULL; /* Group opened */
    H5VL_object_t *   vol_obj = NULL; /* Object of loc_id */
    H5VL_loc_params_t loc_params;
    hid_t             ret_value = H5I_INVALID_HID; /* Return value */

    FUNC_ENTER_API(H5I_INVALID_HID)
    H5TRACE2("i", "i*s", loc_id, name);

    /* Check args */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, H5I_INVALID_HID, "no name")

    /* Set location parameters */
    loc_params.type     = H5VL_OBJECT_BY_SELF;
    loc_params.obj_type = H5I_get_type(loc_id);

    /* get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5I_INVALID_HID, "invalid location identifier")

    /* Open the group */
    if (NULL == (grp = H5VL_group_open(vol_obj, &loc_params, name, H5P_GROUP_ACCESS_DEFAULT,
                                       H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL)))
        HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, H5I_INVALID_HID, "unable to open group")

    /* Get an ID for the group */
    if ((ret_value = H5VL_register(H5I_GROUP, grp, vol_obj->connector, TRUE)) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTREGISTER, H5I_INVALID_HID, "unable to register group")

done:
    if (H5I_INVALID_HID == ret_value)
        if (grp && H5VL_group_close(vol_obj, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, H5I_INVALID_HID, "unable to release group")

    FUNC_LEAVE_API(ret_value)
} /* end H5Gopen1() */

/*-------------------------------------------------------------------------
 * Function:	H5Glink
 *
 * Purpose:	Creates a link between two existing objects.  The new
 *              APIs to do this are H5Lcreate_hard and H5Lcreate_soft.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Glink(hid_t cur_loc_id, H5G_link_t type, const char *cur_name, const char *new_name)
{
    H5VL_link_create_args_t vol_cb_args;         /* Arguments to VOL callback */
    herr_t                  ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("e", "iLl*s*s", cur_loc_id, type, cur_name, new_name);

    /* Check arguments */
    if (!cur_name || !*cur_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no current name specified")
    if (!new_name || !*new_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no new name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(cur_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Create link */
    if (type == H5L_TYPE_HARD) {
        H5VL_object_t *   vol_obj; /* Object of loc_id */
        H5VL_loc_params_t new_loc_params;
        H5VL_object_t     tmp_vol_obj; /* Temporary object */

        /* Set up new location struct */
        new_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        new_loc_params.loc_data.loc_by_name.name    = new_name;
        new_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Get the location object */
        if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(cur_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Construct a temporary VOL object */
        tmp_vol_obj.data      = NULL;
        tmp_vol_obj.connector = vol_obj->connector;

        /* Set up VOL callback arguments */
        vol_cb_args.op_type                                                = H5VL_LINK_CREATE_HARD;
        vol_cb_args.args.hard.curr_obj                                     = vol_obj->data;
        vol_cb_args.args.hard.curr_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        vol_cb_args.args.hard.curr_loc_params.obj_type                     = H5I_get_type(cur_loc_id);
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.name    = cur_name;
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, &tmp_vol_obj, &new_loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end if */
    else if (type == H5L_TYPE_SOFT) {
        H5VL_object_t *   vol_obj; /* Object of loc_id */
        H5VL_loc_params_t loc_params;

        /* Set up location struct */
        loc_params.type                         = H5VL_OBJECT_BY_NAME;
        loc_params.loc_data.loc_by_name.name    = new_name;
        loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
        loc_params.obj_type                     = H5I_get_type(cur_loc_id);

        /* get the location object */
        if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(cur_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Set up VOL callback arguments */
        vol_cb_args.op_type          = H5VL_LINK_CREATE_SOFT;
        vol_cb_args.args.soft.target = cur_name;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, vol_obj, &loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end else-if */
    else
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "Not a valid link type")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Glink() */

/*-------------------------------------------------------------------------
 * Function:	H5Glink2
 *
 * Purpose:	Creates a link between two existing objects.  The new
 *              APIs to do this are H5Lcreate_hard and H5Lcreate_soft.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Glink2(hid_t cur_loc_id, const char *cur_name, H5G_link_t type, hid_t new_loc_id, const char *new_name)
{
    H5VL_link_create_args_t vol_cb_args;         /* Arguments to VOL callback */
    herr_t                  ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE5("e", "i*sLli*s", cur_loc_id, cur_name, type, new_loc_id, new_name);

    /* Check arguments */
    if (!cur_name || !*cur_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no current name specified")
    if (!new_name || !*new_name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no new name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(cur_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Create the appropriate kind of link */
    if (type == H5L_TYPE_HARD) {
        H5VL_object_t *   vol_obj1; /* Object of loc_id */
        H5VL_object_t *   vol_obj2; /* Object of loc_id */
        H5VL_loc_params_t new_loc_params;

        /* Set up new location struct */
        new_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        new_loc_params.obj_type                     = H5I_get_type(new_loc_id);
        new_loc_params.loc_data.loc_by_name.name    = new_name;
        new_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Get the location objects */
        if (NULL == (vol_obj1 = (H5VL_object_t *)H5I_object(cur_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
        if (NULL == (vol_obj2 = (H5VL_object_t *)H5I_object(new_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Set up VOL callback arguments */
        vol_cb_args.op_type                                                = H5VL_LINK_CREATE_HARD;
        vol_cb_args.args.hard.curr_obj                                     = vol_obj1->data;
        vol_cb_args.args.hard.curr_loc_params.type                         = H5VL_OBJECT_BY_NAME;
        vol_cb_args.args.hard.curr_loc_params.obj_type                     = H5I_get_type(cur_loc_id);
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.name    = cur_name;
        vol_cb_args.args.hard.curr_loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, vol_obj2, &new_loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end if */
    else if (type == H5L_TYPE_SOFT) {
        H5VL_object_t *   vol_obj; /* Object of loc_id */
        H5VL_loc_params_t loc_params;

        /* Soft links only need one location, the new_loc_id, but it's possible that
         * new_loc_id is H5L_SAME_LOC */
        if (new_loc_id == H5L_SAME_LOC)
            new_loc_id = cur_loc_id;

        /* Set up location struct */
        loc_params.type                         = H5VL_OBJECT_BY_NAME;
        loc_params.loc_data.loc_by_name.name    = new_name;
        loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
        loc_params.obj_type                     = H5I_get_type(new_loc_id);

        /* get the location object */
        if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(new_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

        /* Set up VOL callback arguments */
        vol_cb_args.op_type          = H5VL_LINK_CREATE_SOFT;
        vol_cb_args.args.soft.target = cur_name;

        /* Create the link through the VOL */
        if (H5VL_link_create(&vol_cb_args, vol_obj, &loc_params, H5P_LINK_CREATE_DEFAULT,
                             H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
            HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create link")
    } /* end else-if */
    else
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a valid link type")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Glink2() */

/*-------------------------------------------------------------------------
 * Function:	H5Gmove
 *
 * Purpose:	Moves and renames a link.  The new API to do this is H5Lmove.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gmove(hid_t src_loc_id, const char *src_name, const char *dst_name)
{
    H5VL_object_t *   vol_obj; /* Object of loc_id */
    H5VL_loc_params_t loc_params1;
    H5VL_loc_params_t loc_params2;
    herr_t            ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE3("e", "i*s*s", src_loc_id, src_name, dst_name);

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(src_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    loc_params1.type                         = H5VL_OBJECT_BY_NAME;
    loc_params1.obj_type                     = H5I_get_type(src_loc_id);
    loc_params1.loc_data.loc_by_name.name    = src_name;
    loc_params1.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    loc_params2.type                         = H5VL_OBJECT_BY_NAME;
    loc_params2.loc_data.loc_by_name.name    = dst_name;
    loc_params2.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    /* get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(src_loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Move the link */
    if (H5VL_link_move(vol_obj, &loc_params1, NULL, &loc_params2, H5P_LINK_CREATE_DEFAULT,
                       H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTMOVE, FAIL, "couldn't move link")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gmove() */

/*-------------------------------------------------------------------------
 * Function:	H5Gmove2
 *
 * Purpose:	Moves and renames a link.  The new API to do this is H5Lmove.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gmove2(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id, const char *dst_name)
{
    H5VL_object_t *   vol_obj1 = NULL; /* Object of src_id */
    H5VL_loc_params_t loc_params1;
    H5VL_object_t *   vol_obj2 = NULL; /* Object of dst_id */
    H5VL_loc_params_t loc_params2;
    herr_t            ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("e", "i*si*s", src_loc_id, src_name, dst_loc_id, dst_name);

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(dst_loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Set location parameter for source object */
    loc_params1.type                         = H5VL_OBJECT_BY_NAME;
    loc_params1.loc_data.loc_by_name.name    = src_name;
    loc_params1.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params1.obj_type                     = H5I_get_type(src_loc_id);

    /* Set location parameter for destination object */
    loc_params2.type                         = H5VL_OBJECT_BY_NAME;
    loc_params2.loc_data.loc_by_name.name    = dst_name;
    loc_params2.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params2.obj_type                     = H5I_get_type(dst_loc_id);

    if (H5L_SAME_LOC != src_loc_id)
        /* get the location object */
        if (NULL == (vol_obj1 = (H5VL_object_t *)H5I_object(src_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
    if (H5L_SAME_LOC != dst_loc_id)
        /* get the location object */
        if (NULL == (vol_obj2 = (H5VL_object_t *)H5I_object(dst_loc_id)))
            HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Move the link */
    if (H5VL_link_move(vol_obj1, &loc_params1, vol_obj2, &loc_params2, H5P_LINK_CREATE_DEFAULT,
                       H5P_LINK_ACCESS_DEFAULT, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTMOVE, FAIL, "unable to move link")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gmove2() */

/*-------------------------------------------------------------------------
 * Function:	H5Gunlink
 *
 * Purpose:	Removes a link.  The new API is H5Ldelete/H5Ldelete_by_idx.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gunlink(hid_t loc_id, const char *name)
{
    H5VL_object_t *           vol_obj;     /* Object of loc_id */
    H5VL_link_specific_args_t vol_cb_args; /* Arguments to VOL callback */
    H5VL_loc_params_t         loc_params;
    herr_t                    ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE2("e", "i*s", loc_id, name);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.obj_type                     = H5I_get_type(loc_id);
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    /* Get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Set up VOL callback arguments */
    vol_cb_args.op_type = H5VL_LINK_DELETE;

    /* Delete the link */
    if (H5VL_link_specific(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "couldn't delete link")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gunlink() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_linkval
 *
 * Purpose:	Retrieve's a soft link's data.  The new API is
 *              H5Lget_val/H5Lget_val_by_idx.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gget_linkval(hid_t loc_id, const char *name, size_t size, char *buf /*out*/)
{
    H5VL_object_t *      vol_obj;     /* Object of loc_id */
    H5VL_link_get_args_t vol_cb_args; /* Arguments to VOL callback */
    H5VL_loc_params_t    loc_params;
    herr_t               ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE4("e", "i*szx", loc_id, name, size, buf);

    /* Check arguments */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Set up location struct */
    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.obj_type                     = H5I_get_type(loc_id);
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;

    /* Get the location object */
    if (NULL == (vol_obj = (H5VL_object_t *)H5I_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Set up VOL callback arguments */
    vol_cb_args.op_type               = H5VL_LINK_GET_VAL;
    vol_cb_args.args.get_val.buf      = buf;
    vol_cb_args.args.get_val.buf_size = size;

    /* Get the link value */
    if (H5VL_link_get(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to get link value")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_linkval() */

/*-------------------------------------------------------------------------
 * Function:	H5Gset_comment
 *
 * Purpose:     Gives the specified object a comment.  The COMMENT string
 *		should be a null terminated string.  An object can have only
 *		one comment at a time.  Passing NULL for the COMMENT argument
 *		will remove the comment property from the object.
 *
 * Note:	Deprecated in favor of H5Oset_comment/H5Oset_comment_by_name
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Robb Matzke
 *              Monday, July 20, 1998
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gset_comment(hid_t loc_id, const char *name, const char *comment)
{
    H5VL_object_t *                    vol_obj;      /* Object of loc_id */
    H5VL_optional_args_t               vol_cb_args;  /* Arguments to VOL callback */
    H5VL_native_object_optional_args_t obj_opt_args; /* Arguments for optional operation */
    H5VL_loc_params_t                  loc_params;
    herr_t                             ret_value = SUCCEED; /* Return value */

    FUNC_ENTER_API(FAIL)
    H5TRACE3("e", "i*s*s", loc_id, name, comment);

    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "can't set collective metadata read info")

    /* Fill in location struct fields */
    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params.obj_type                     = H5I_get_type(loc_id);

    /* Get the location object */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")

    /* Set up VOL callback arguments */
    obj_opt_args.set_comment.comment = comment;
    vol_cb_args.op_type              = H5VL_NATIVE_OBJECT_SET_COMMENT;
    vol_cb_args.args                 = &obj_opt_args;

    /* Set the comment */
    if (H5VL_object_optional(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) <
        0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, FAIL, "unable to set comment value")

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gset_comment() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_comment
 *
 * Purpose:	Return at most BUFSIZE characters of the comment for the
 *		specified object.  If BUFSIZE is large enough to hold the
 *		entire comment then the comment string will be null
 *		terminated, otherwise it will not.  If the object does not
 *		have a comment value then no bytes are copied to the BUF
 *		buffer.
 *
 * Note:	Deprecated in favor of H5Oget_comment/H5Oget_comment_by_name
 *
 * Return:	Success:	Number of characters in the comment counting
 *				the null terminator.  The value returned may
 *				be larger than the BUFSIZE argument.
 *
 *		Failure:	Negative
 *
 * Programmer:	Robb Matzke
 *              Monday, July 20, 1998
 *
 *-------------------------------------------------------------------------
 */
int
H5Gget_comment(hid_t loc_id, const char *name, size_t bufsize, char *buf /*out*/)
{
    H5VL_object_t *                    vol_obj;      /* Object of loc_id */
    H5VL_optional_args_t               vol_cb_args;  /* Arguments to VOL callback */
    H5VL_native_object_optional_args_t obj_opt_args; /* Arguments for optional operation */
    H5VL_loc_params_t                  loc_params;
    size_t                             comment_len = 0; /* Length of comment */
    int                                ret_value;       /* Return value */

    FUNC_ENTER_API(-1)
    H5TRACE4("Is", "i*szx", loc_id, name, bufsize, buf);

    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, -1, "no name specified")
    if (bufsize > 0 && !buf)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, -1, "no buffer specified")

    /* Set up collective metadata if appropriate */
    if (H5CX_set_loc(loc_id) < 0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTSET, -1, "can't set collective metadata read info")

    /* Fill in location struct fields */
    loc_params.type                         = H5VL_OBJECT_BY_NAME;
    loc_params.loc_data.loc_by_name.name    = name;
    loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    loc_params.obj_type                     = H5I_get_type(loc_id);

    /* Get the location object */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, -1, "invalid location identifier")

    /* Set up VOL callback arguments */
    obj_opt_args.get_comment.buf         = buf;
    obj_opt_args.get_comment.buf_size    = bufsize;
    obj_opt_args.get_comment.comment_len = &comment_len;
    vol_cb_args.op_type                  = H5VL_NATIVE_OBJECT_GET_COMMENT;
    vol_cb_args.args                     = &obj_opt_args;

    /* Get the comment */
    if (H5VL_object_optional(vol_obj, &loc_params, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL) <
        0)
        HGOTO_ERROR(H5E_SYM, H5E_CANTGET, -1, "unable to get comment value")

    /* Set return value */
    ret_value = (int)comment_len;

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Gget_comment() */

/*-------------------------------------------------------------------------
 * Function:    H5Giterate
 *
 * Purpose:     Iterates over the entries of a group.  The LOC_ID and NAME
 *              identify the group over which to iterate and IDX indicates
 *              where to start iterating (zero means at the beginning).	 The
 *              OPERATOR is called for each member and the iteration
 *              continues until the operator returns non-zero or all members
 *              are processed. The operator is passed a group ID for the
 *              group being iterated, a member name, and OP_DATA for each
 *              member.
 *
 * NOTE:        Deprecated in favor of H5Literate
 *
 * Return:      Success:    The return value of the first operator that
 *                          returns non-zero, or zero if all members were
 *                          processed with no operator returning non-zero.
 *
 *              Failure:    Negative if something goes wrong within the
 *                          library, or the negative value returned by one
 *                          of the operators.
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Giterate(hid_t loc_id, const char *name, int *idx_p, H5G_iterate_t op, void *op_data)
{
    H5VL_object_t *                   vol_obj;      /* Object of loc_id */
    H5VL_optional_args_t              vol_cb_args;  /* Arguments to VOL callback */
    H5VL_native_group_optional_args_t grp_opt_args; /* Arguments for optional operation */
    hsize_t                           last_obj = 0; /* Pointer to index value */
    herr_t                            ret_value;    /* Return value                     */

    FUNC_ENTER_API(FAIL)
    H5TRACE5("e", "i*s*IsGi*x", loc_id, name, idx_p, op, op_data);

    /* Check args */
    if (!name || !*name)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")
    if (idx_p && *idx_p < 0)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index specified")
    if (!op)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no operator specified")

    /* Get the object pointer */
    if (NULL == (vol_obj = H5VL_vol_object(loc_id)))
        HGOTO_ERROR(H5E_ID, H5E_BADTYPE, (-1), "invalid identifier")

    /* Set up VOL callback arguments */
    grp_opt_args.iterate_old.loc_params.type                         = H5VL_OBJECT_BY_NAME;
    grp_opt_args.iterate_old.loc_params.loc_data.loc_by_name.name    = name;
    grp_opt_args.iterate_old.loc_params.loc_data.loc_by_name.lapl_id = H5P_LINK_ACCESS_DEFAULT;
    grp_opt_args.iterate_old.loc_params.obj_type                     = H5I_get_type(loc_id);
    grp_opt_args.iterate_old.idx                                     = (hsize_t)(idx_p == NULL ? 0 : *idx_p);
    grp_opt_args.iterate_old.last_obj                                = &last_obj;
    grp_opt_args.iterate_old.op                                      = op;
    grp_opt_args.iterate_old.op_data                                 = op_data;
    vol_cb_args.op_type                                              = H5VL_NATIVE_GROUP_ITERATE_OLD;
    vol_cb_args.args                                                 = &grp_opt_args;

    /* Call private iteration function, through VOL callback */
    if ((ret_value = H5VL_group_optional(vol_obj, &vol_cb_args, H5P_DATASET_XFER_DEFAULT, H5_REQUEST_NULL)) <
        0)
        HERROR(H5E_SYM, H5E_BADITER, "error iterating over group's links");

    /* Set value to return */
    if (idx_p)
        *idx_p = (int)last_obj;

done:
    FUNC_LEAVE_API(ret_value)
} /* end H5Giterate() */

/*-------------------------------------------------------------------------
 * Function:	H5Gget_num_objs
 *
 * Purpose:     Returns the number of objects in the group.  It iterates
 *              all B-tree leaves and sum up total number of group members.
 *
 * Note:	Deprecated in favor of H5Gget_info
 *
 * Return:	Success:        Non-negative
 *		Failure:	Negative
 *
 * Programmer:	Raymond Lu
 *	        Nov 20, 2002
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5Gget_num_objs(hid_t loc_id, hsize_t *num_objs /*out*/)
{
    H5VL_object_t *       vol_obj = NULL;      /* Object of loc_id */