UDM_RESULT* UdmFind2(UDM_AGENT* Agent, const char* query);
Executes a search query in the search session,
pointed by the Agent variable,
and returns search results.
AgentPointer to a variable of type UDM_AGENT, should be the address of an existing variable of UDM_AGENT type.
query
Search query, using the same format with
search.cgi
QUERY_STRING
described in the Section called Search parameters
in Chapter 11.
UdmFind2() can fail if the search session
could not open a connection to the database specified by
the DBAddr command,
or if some of the SQL queries which were sent to the database
returnd on error.
Example 1. UdmFind2 example
UDM_RESULT *Res;
if (!(Res= UdmFind2(Agent, "q=search+words&ps=10"))
{
printf('Error: UdmFind2 failed');
exit(1);
}
Example 2. UdmFind2 - a complete search application example
#include <stdio.h>
#include <udmsearch.h>
int main(int ac, char **av)
{
UDM_ENV Env;
UDM_AGENT Agent;
UDM_RESULT *Res;
size_t row;
char query[256];
if (ac < 2)
{
printf("Usage: %s query\n", av[0]);
exit(1);
}
if (!UdmEnvInit(&Env) ||
!UdmAgentInit(&Agent, &Env, 0))
goto err;
if (UDM_OK != UdmAgentAddLine(&Agent, "DBAddr mysql://root@localhost/msdn33/"))
goto err;
udm_snprintf(query, sizeof(query), "q=%s", av[1]);
if (!(Res= UdmFind2(&Agent, query)))
goto err;
printf("Documents %d-%d from %d total found\n", Res->first, Res->last, Res->total_found);
for (row= 0; row < Res->num_rows; row++)
{
UDM_DOCUMENT *Doc= &Res->Doc[row];
printf("ResultNo: %d\n", UdmVarListFindInt(&Doc->Sections, "Order", 0));
printf("ID : %d\n", UdmVarListFindInt(&Doc->Sections, "ID", 0));
printf("Size : %d bytes\n", UdmVarListFindInt(&Doc->Sections, "Content-Length", 0));
printf("Type : '%s'\n", UdmVarListFindStr(&Doc->Sections, "Content-Type", ""));
printf("Title : '%s'\n", UdmVarListFindStr(&Doc->Sections, "title", ""));
printf("Body : '%s'\n", UdmVarListFindStr(&Doc->Sections, "body", ""));
printf("\n");
}
UdmResultFree(Res);
UdmAgentFree(&Agent);
UdmEnvFree(&Env);
return 0;
err:
fprintf(stderr, "Error: '%s'\n", UdmEnvErrMsg(&Env));
return 1;
}
Example 3. Makefile example
CFLAGS=-I/usr/local/mnogosearch/include -Wall
LDFLAGS=-L/usr/local/mnogosearch/lib -lmnogosearch -Wl,--rpath -Wl,/usr/local/mnogosearch/lib
CC=gcc
all: search
search.o: search.c
$(CC) $(CFLAGS) -c search.c -o search.o
search: search.o
$(CC) $(LDFLAGS) search.o -o search
clean:
rm -rf search search.o