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mnogosearch-3.3.9-4mdv2010.1.x86_64.rpm

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><H1
><A
NAME="c-api-UdmFind2"
></A
>UdmFind2</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN14354"
></A
><H2
>Name</H2
>UdmFind2&nbsp;--&nbsp;Executes a search query</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN14357"
></A
><H2
>Description</H2
><code
class="methodsynopsis"
>&#13;  <span
class="type"
>UDM_RESULT* </span
>UdmFind2(<span
class="methodparam"
><span
class="type"
>UDM_AGENT* </span
><span
class="parameter"
>Agent</span
></span
><span
class="methodparam"
>, <span
class="type"
>const char* </span
><span
class="parameter"
>query</span
></span
>);&#13;</code
><P
>&#13;   Executes a search query in the search session,
   pointed by the <CODE
CLASS="parameter"
>Agent</CODE
> variable,
   and returns search results.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN14370"
></A
><H2
>Parameters</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>Agent</CODE
></DT
><DD
><P
>&#13;       Pointer to a variable of type <SPAN
CLASS="type"
>UDM_AGENT</SPAN
>,
       should be the address of an existing variable
       of <SPAN
CLASS="type"
>UDM_AGENT</SPAN
> type.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>query</CODE
></DT
><DD
><P
>&#13;       Search query, using the same format with
       <SPAN
CLASS="application"
>search.cgi</SPAN
>
       <CODE
CLASS="varname"
>QUERY_STRING</CODE
>
       described in <A
HREF="msearch-doingsearch.html#search-params"
>the Section called <I
>Search parameters
    <A
NAME="AEN4440"
></A
></I
> in Chapter 10</A
>.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN14389"
></A
><H2
>Return Values</H2
><P
>&#13;   A pointer to an allocated variable of <SPAN
CLASS="type"
>UDM_RESULT</SPAN
> type,
   or <TT
CLASS="literal"
>NULL</TT
> on error.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN14394"
></A
><H2
>Notes</H2
><P
>&#13;  <CODE
CLASS="function"
>UdmFind2()</CODE
> can fail if the search session
  could not open a connection to the database specified by
  the <B
CLASS="command"
><A
HREF="msearch-cmdref-dbaddr.html"
>DBAddr</A
></B
> command,
  or if some of the SQL queries which were sent to the database
  returnd on error.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN14400"
></A
><H2
>Examples</H2
><P
>&#13;   <DIV
CLASS="example"
><A
NAME="AEN14403"
></A
><P
><B
>Example 1. <CODE
CLASS="function"
>UdmFind2</CODE
> example</B
></P
><PRE
CLASS="programlisting"
>&#13;
UDM_RESULT *Res;

if (!(Res= UdmFind2(Agent, "q=search+words&#38;ps=10"))
{
  printf('Error: UdmFind2 failed');
  exit(1);
}

    </PRE
></DIV
>
  </P
><P
>&#13;   <DIV
CLASS="example"
><A
NAME="AEN14408"
></A
><P
><B
>Example 2. <CODE
CLASS="function"
>UdmFind2</CODE
> - a complete search application example</B
></P
><PRE
CLASS="programlisting"
>&#13;
#include &#60;stdio.h&#62;
#include &#60;udmsearch.h&#62;


int main(int ac, char **av)
{
  UDM_ENV Env;
  UDM_AGENT Agent;
  UDM_RESULT *Res;
  size_t row;
  char query[256];
  
  if (ac &#60; 2)
  {
    printf("Usage: %s query\n", av[0]);
    exit(1);
  }
  
  if (!UdmEnvInit(&#38;Env) ||
      !UdmAgentInit(&#38;Agent, &#38;Env, 0))
    goto err;
  
  if (UDM_OK != UdmAgentAddLine(&#38;Agent, "DBAddr mysql://root@localhost/msdn33/"))
    goto err;
  
  udm_snprintf(query, sizeof(query), "q=%s", av[1]);
  if (!(Res= UdmFind2(&#38;Agent, query)))
    goto err;
  
  printf("Documents %d-%d from %d total found\n", Res-&#62;first, Res-&#62;last, Res-&#62;total_found);
  for (row= 0; row &#60; Res-&#62;num_rows; row++)
  {
    UDM_DOCUMENT *Doc= &#38;Res-&#62;Doc[row];
    printf("ResultNo: %d\n", UdmVarListFindInt(&#38;Doc-&#62;Sections, "Order", 0));
    printf("ID      : %d\n", UdmVarListFindInt(&#38;Doc-&#62;Sections, "ID", 0));
    printf("Size    : %d bytes\n", UdmVarListFindInt(&#38;Doc-&#62;Sections, "Content-Length", 0));
    printf("Type    : '%s'\n", UdmVarListFindStr(&#38;Doc-&#62;Sections, "Content-Type", ""));
    printf("Title   : '%s'\n", UdmVarListFindStr(&#38;Doc-&#62;Sections, "title", ""));
    printf("Body    : '%s'\n", UdmVarListFindStr(&#38;Doc-&#62;Sections, "body", ""));
    printf("\n");
  }
  UdmResultFree(Res);
  
  UdmAgentFree(&#38;Agent);
  UdmEnvFree(&#38;Env);
  
  return 0;
  
err:
  fprintf(stderr, "Error: '%s'\n", UdmEnvErrMsg(&#38;Env));
  return 1;
}


    </PRE
></DIV
>
  </P
><P
>&#13;   <DIV
CLASS="example"
><A
NAME="AEN14413"
></A
><P
><B
>Example 3. <CODE
CLASS="function"
>Makefile</CODE
> example</B
></P
><PRE
CLASS="programlisting"
>&#13;
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

    </PRE
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN14417"
></A
><H2
>See Also</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><CODE
CLASS="function"
><A
HREF="msearch-c-api-udmenvinit.html"
>UdmEnvInit</A
></CODE
></TD
></TR
><TR
><TD
><CODE
CLASS="function"
><A
HREF="msearch-c-api-udmenvfree.html"
>UdmEnvFree</A
></CODE
></TD
></TR
><TR
><TD
><CODE
CLASS="function"
><A
HREF="msearch-c-api-udmagentfree.html"
>UdmAgentFree</A
></CODE
></TD
></TR
><TR
><TD
><A
HREF="msearch-doingsearch.html#search-params"
>the Section called <I
>Search parameters
    <A
NAME="AEN4440"
></A
></I
> in Chapter 10</A
></TD
></TR
></TBODY
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><P
></P
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