File: zoomtst4.c

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/* $Id: zoomtst4.c,v 1.9 2006/04/21 10:28:08 adam Exp $  */

/** \file zoomtst4.c
    \brief Asynchronous multi-target client with separate present
    
    Asynchronous multi-target going through proxy doing search and retrieve
    using present.
*/

#include <stdio.h>
#include <string.h>
#include <yaz/xmalloc.h>

#include <yaz/zoom.h>

const char *my_callback (void *handle, const char *name)
{
    if (!strcmp (name, "async"))
        return "1";
    return 0;
}

int main(int argc, char **argv)
{
    int i;
    int no = argc-3;
    ZOOM_connection z[500]; /* allow at most 500 connections */
    ZOOM_resultset r[500];  /* and result sets .. */
    ZOOM_query q;
    ZOOM_options o = ZOOM_options_create ();

    if (argc < 4)
    {
        fprintf (stderr, "usage:\n%s proxy target1 .. targetN query\n",
                 *argv);
        exit (2);
    }
    if (no > 500)
        no = 500;

    /* function my_callback called when reading options .. */
    ZOOM_options_set_callback (o, my_callback, 0);

    /* get 20 (at most) records from offset 5 */
    ZOOM_options_set (o, "start", "5");
    ZOOM_options_set (o, "count", "20");
    ZOOM_options_set (o, "schema", "gils-schema");
    ZOOM_options_set (o, "elementSetName", "F");

    /* set proxy */
    ZOOM_options_set (o, "proxy", argv[1]);
    
    /* create query */
    q = ZOOM_query_create ();
    if (ZOOM_query_prefix (q, argv[argc-1]))
    {
        printf ("bad PQF: %s\n", argv[argc-1]);
        exit (1);
    }
    /* connect - and search all */
    for (i = 0; i<no; i++)
    {
        z[i] = ZOOM_connection_create (o);
        ZOOM_connection_connect (z[i], argv[i+2], 0);
        r[i] = ZOOM_connection_search (z[i], q);
    }

    /* network I/O */
    while (ZOOM_event (no, z))
        ;

    /* handle errors */
    for (i = 0; i<no; i++)
    {
        int error;
        const char *errmsg, *addinfo;
        if ((error = ZOOM_connection_error(z[i], &errmsg, &addinfo)))
            fprintf (stderr, "%s error: %s (%d) %s\n",
                     ZOOM_connection_option_get(z[i], "host"),
                     errmsg, error, addinfo);
        else
            printf ("%s: %ld hits\n", ZOOM_connection_option_get(z[i], "host"),
                    (long) ZOOM_resultset_size(r[i]));
    }

    /* destroy stuff and exit */
    ZOOM_query_destroy (q);
    for (i = 0; i<no; i++)
    {
        ZOOM_resultset_destroy (r[i]);
        ZOOM_connection_destroy (z[i]);
    }
    ZOOM_options_destroy(o);
    exit (0);
}
/*
 * Local variables:
 * c-basic-offset: 4
 * indent-tabs-mode: nil
 * End:
 * vim: shiftwidth=4 tabstop=8 expandtab
 */