Moving Object Specs

The objid contains a pointer to a particular file system where the spec information is stored. To keep spec information as available as the object described by the spec, the ToolTalk service stores the spec information on the same file system as the object. Therefore, if the object moves, the spec must move, too.

Use tt_spec_move to notify the ToolTalk service when an object moves from one file to another (for example, through a cut and paste operation).

• If a new objid is not required (because both the new and old files are in the same file system), the ToolTalk service returns TT_WRN_SAME_OBJID.

• If the object moved to another file system, the ToolTalk service returns a new objid for the object and leaves a forwarding pointer in the ToolTalk database from the old objid to the new one.

When your process sends a message to an out-of-date objid (that is, one with a forwarding pointer), tt_message_send returns a special status code, TT_WRN_STALE_OBJID, and replaces the object attribute in the message with a new objid that points to the same object in the new location.

Update any internal data structures that reference the object with the new objid.