lb_lookup_type man page on Ultrix

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lb_lookup_type(3ncs)					  lb_lookup_type(3ncs)

       lb_lookup_type  -  look up information about a type in the Global Loca‐
       tion Broker database

       #include <idl/c/lb.h>

       void    lb_$lookup_type(obj_type,    lookup_handle,    max_num_results,
			   num_results, results, status)
       uuid_$t *obj_type;
       lb_$lookup_handle_t *lookup_handle;
       unsigned long max_num_results;
       unsigned long *num_results;
       lb_$entry_t results[ ];
       status_$t *status;

       obj_type		   The UUID of the type being looked up.

       lookup_handle	   A   location	  in  the  database.   On  input,  the
			   lookup_handle indicates the location in  the	 data‐
			   base	 where	the  search begins.  An input value of
			   lb_$default_lookup_handle specifies that the search
			   will	 start	at  the beginning of the database.  On
			   return,  the	 lookup_handle	indicates   the	  next
			   unsearched part of the database (that is, the point
			   at which the next search should begin).   A	return
			   value  of  lb_$default_lookup_handle indicates that
			   the search reached the end  of  the	database;  any
			   other  return value indicates that the search found
			   at most max_num_results matching entries before  it
			   reached the end of the database.

       max_num_results	   The	maximum number of entries that can be returned
			   by a single routine.	 This should be the number  of
			   elements in the results array.

       num_results	   The	number	of  entries  that were returned in the
			   results array.

       results		   An array that contains the  matching	 GLB  database
			   entries,   up   to  the  number  specified  by  the
			   max_num_results parameter.  If the  array  contains
			   any entries for servers on the local network, those
			   entries appear first.

       status		   The completion status.  If  the  completion	status
			   returned  in is equal to status_$ok , then the rou‐
			   tine that supplied it was successful.

       The routine returns GLB database entries whose  obj_type	 fields	 match
       the  specified  type.  It returns information about all objects of that
       type and about all interfaces to each of these objects.

       The routine cannot return more than max_num_results matching entries at
       a  time.	  The lookup_handle parameter enables you to find all matching
       entries by doing sequential lookups.

       If you use a sequence of lookup routines to find entries in  the	 data‐
       base,  it  is possible that the returned results will skip or duplicate
       entries.	 This is because the Location Broker does not prevent  modifi‐
       cation  of  the	database  between  lookups,  and such modification can
       change the locations of entries relative to a lookup_handle value.

       It is also possible that the results of a single	 lookup	 routine  will
       skip  or	 duplicate entries.  This can occur if the size of the results
       exceeds the size of an RPC packet (64K bytes).

       The following statement looks up information in the GLB database	 about
       the type array :
       lb_$lookup_type (&array_id, &lookup_handle, max_results,
			    &num_results, &results, &status);

       This section lists status codes for errors returned by this routine in

			   The	format	of the Location Broker database is out
			   of date.  The database may have been created by  an
			   old	version	 of the Location Broker; in this case,
			   delete the out-of-date database and reregister  any
			   entries that it contained.  The LLB or GLB that was
			   accessed may be running  out-of-date	 software;  in
			   this	 case, update all Location Brokers to the cur‐
			   rent software version.

       lb_$database_busy   The Location Broker database is currently in use in
			   an incompatible manner.

       lb_$not_registered  The	Location Broker does not have any entries that
			   match the  criteria	specified  in  the  lookup  or
			   unregister  routine.	  The  requested object, type,
			   interface, or combination thereof is not registered
			   in  the specified database.	If you are using an or
			   routine specifying an  LLB,	check  that  you  have
			   specified the correct LLB.

       lb_$cant_access	   The	Location  Broker  cannot  access the database.
			   Among the possible reasons:

			   1. The database does not exist,  and	 the  Location
			   Broker cannot create it.

			   2.  The  database  exists,  but the Location Broker
			   cannot access it.

			   3. The GLB entry table is full.

			   The Location Broker Client Agent cannot  reach  the
			   requested  GLB  or  LLB.   A communications failure
			   occurred or the broker was not running.

See Also
       intro(3ncs),	lb_lookup_interface(3ncs),     lb_lookup_object(3ncs),


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