lb_lookup_object man page on Ultrix

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lb_lookup_object(3ncs)					lb_lookup_object(3ncs)

Name
       lb_lookup_object	 -  look  up information about an object in the Global
       Location Broker database

Syntax
       #include <idl/c/lb.h>

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

Arguments
       object		   The UUID of the object 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.

Description
       The routine returns GLB database entries whose object field matches the
       specified object UUID.

       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).

Examples
       The  following  statement, looks up GLB database entries for the object
       identified by :
       lb_$lookup_object(&bank_id, &lookup_handle,
			     MAX_LOCS, &n_locs, bank_loc, &status);

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

       lb_$database_invalid
			   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.

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

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

Files
See Also
       intro(3ncs),  lb_lookup_interface(3ncs),	 lb_lookup_object_local(3ncs),
       lb_lookup_range(3ncs), lb_lookup_type(3ncs)

							lb_lookup_object(3ncs)
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