/* * $Id: zoomtst4.c,v 1.7 2001/11/30 08:24:06 adam Exp $ * * 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: %d hits\n", ZOOM_connection_option_get(z[i], "host"),                    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);}