genders_testquery - query genders database for a set of nodes

genders_testquery() tests if the node pointed to by node meets the conditions specified in the query.  If
       node  is  NULL, the current node is tested.  Queries are based on the union, intersection, difference, or
       complement of genders attributes and values.   The  query  is  passed  as  a  string  through  the  query
       parameter.   The  set  operation  union  is  represented  by two pipe symbols ('||'), intersection by two
       ampersand symbols ('&&'), difference by two minus symbols ('--'), and complement by a tilde  ('~').   Set
       operations  are  performed  left to right.  Parentheses may be used to change the order of operations.  A
       list of query examples are listed below.  A NULL query retrieves all nodes from the genders database.

GENDERS_ERR_NULLHANDLE
              The handle parameter is NULL.  The genders handle must be created with genders_handle_create(3).

       GENDERS_ERR_NOTLOADEDgenders_load_data(3) has not been called to load genders data.

       GENDERS_ERR_PARAMETERS
              An incorrect parameter has been passed in.

       GENDERS_ERR_SYNTAX
              There is a syntax error in the query.

       GENDERS_ERR_OUTMEMmalloc(3) has failed internally, system is out of memory.

       GENDERS_ERR_MAGIChandle  has  an  incorrect  magic number.  handle does not point to a genders handle or handle has
              been destroyed by genders_handle_destroy(3).

       GENDERS_ERR_INTERNAL
              An internal system error has occurred.

       The following are example queries that can be passed to genders_testquery().

       Test if a node contains the mgmt or login attribute:
               "mgmt||login"

       Test if a node is not a login node:
               "all--login"

       Test if a node is both a login node and ntp server:
               "login&&ntpserv"

       Test if a node is not a mgmt or login node:
               "~(mgmt||login)"

       /usr/include/genders.h

       genders_testquery - query genders database for a set of nodes

       If the node as met the conditions of the query, 1 is returned.  0 is returned if the node does  not  meet
       the  conditions  of  the  query.  On error, -1 is returned, and an error code is returned in handle.  The
       error code can be retrieved via genders_errnum(3) , and a description of the error code can be  retrieved
       via genders_strerror(3).  Error codes are defined in genders.h.

libgenders(3), genders_handle_create(3), genders_load_data(3), genders_errnum(3), genders_strerror(3)

LLNL                                                June 2004                               GENDERS_TESTQUERY(3)

#include<genders.h>intgenders_testquery(genders_thandle,constchar*node,constchar*query);