![[OPUS]](opus.gif)
The definitive guide for programming your applications to access the OPUS blackboards directly is here. The remainder of this document consists of links to the OPUS class library documentation.
| Absolute_time | - A field object that represents an absolute, wall-clock time. |
| Absolute_time_bb | - A blackboard whose entries are absolute, wall-clock times. |
| Bb_params_db | - An object that provides access to certain user- defined parameters of OSF and PSTAT entries. |
| Blackboard | - OPUS blackboard abstract base class |
| Com_arg | - A field object containing a calling argument to a function. |
| Com_label | - A field object containing an identifying label for the Command object to which it belongs. |
| Command | - An entry object that is used on the command blackboard. |
| Command_bb | - A blackboard object with entries that map to callable functions. |
| Command_event | - An event object created in response to a command blackboard event |
| Dangle | - A field object that encapsulates the dangle portion of a file specification. |
| Data_id | - A field object that stores the DATA_ID portion of an OSF. |
| Dataset | - A field object that stores the DATASET portion of an OSF. |
| Dcf_num | - A field object that stores the DCF_NUM portion of an OSF. |
| Delta_time | - A field object that represents a period of time. |
| Directory | - A field object that encapsulates the path portion of a file specification. |
| Entry | - OPUS blackboard entry base class |
| Event | - OPUS Event Base Class |
| Event_journal | - Maintains event journals for class Opus_env. |
| Extension | - A field object that encapsulates the extension portion of a file specification. |
| Field | - OPUS entry field base class |
| File_entry | - An entry object that is used on the files blackboard. |
| File_event | - An event object created in response to a files blackboard event. |
| File_osf | - A file name-based implementation of an Osf object. |
| File_osf_bb | - A file name-based implementation of an Osf_bb object. |
| File_osf_lock | - Opus_lock object for file name-based OSF's. |
| File_pstat | - A file name-based implementation of a Pstat object. |
| File_pstat_bb | - A file name-based implementation of a Pstat_bb object. |
| File_pstat_lock | - Opus_lock object for file name-based PSTAT's. |
| Files_bb | - A blackboard object that is an interface to the file system. |
| Halt_event | - An event object created in response to a HALT command issued on the application's PSTAT |
| Internal_event | - An object that is thrown by the blackboard polling functions when an internally handled event occurs. |
| Ioavail_event | - An internally handled event generated when a process exits IOWAIT state. |
| Low_store_event | - An Event object generated when disk stores are low. |
| Msg | - The API message reporting class |
| Node | - A field object that stores the NODE portion of a PSTAT. |
| Null_lock | - A non-functional lock object for a lockable resource that requires no locking. |
| Num_in_str | - A helper class that aids encapsulation of numbers in string objects. |
| Obs_cmd | - A field object that stores the COMMAND portion of an OSF. |
| Obs_stat | - A field object that stores the STATUS portion of an OSF. |
| Ofile | - An object for resolving directory stretches. |
| Opus_env | - OPUS Environment/Interface Object |
| Opus_lock | - An abstract base class for OPUS resource locks. |
| Opus_lock_file | - A file-based file lock |
| Opus_pid | - An OPUS process identifier object. |
| Opus_polymorph | - Abstract base class that imposes a string representation method on its descendants. |
| Opus_time_stamp | - A base class for Start_time and Time_stamp objects. |
| Oresource | - OPUS Oresource File Class |
| Osf | - A base class for all OPUS OSF blackboard entries. |
| Osf_bb | - An abstract base class for all OSF blackboard implementations. |
| Osf_event | - An event object created in response to an OSF blackboard event. |
| Osf_lock | - Abstract base class for specialized locks on OSF's. |
| Path | - A field object that stores the PATH portion of an OSF. |
| Pid | - A field object that stores the PID portion of a PSTAT. |
| Pipeline | - OPUS Pipeline Class |
| Proc_cmd | - A field object that stores the COMMAND portion of a PSTAT. |
| Proc_stat | - A field object that stores the STATUS portion of a PSTAT. |
| Process | - A field object that stores the PROCESS portion of a PSTAT. |
| Pstat | - A base class for all OPUS PSTAT implementations. |
| Pstat_bb | - An abstract base class for all PSTAT blackboard implementations. |
| Pstat_event_bb | - A blackboard that stores a PSTAT against which PSTAT-related triggers poll. |
| Pstat_lock | - Abstract base class for specialized locks on PSTAT's. |
| Reinit_event | - An event object generated when PSTAT_REINIT_COMMAND is placed in the application's PSTAT Proc_cmd field. |
| Relative_time_bb | - A blackboard for marking elapsed times. |
| Resume_event | - An internally handled event generated when a PSTAT_RESUME_COMMAND is issued in the application's PSTAT. |
| Rootname | - A field object that stores the root name portion of a full file specification. |
| Start_time | - A field object that stores the START_TIME portion of a PSTAT. |
| Str_to_num | - Class to convert strings to different types |
| Suspend_event | - An internal event generated when a PSTAT_SUSPEND_COMMAND is placed in the application's PSTAT COMMAND field. |
| Suspended_event | - An internally handled event object generated when the process is suspended (contains Proc_stat::SUSPENDED in its STATUS field). |
| System_time | - A class for accessing the system clock. |
| Time_entry | - An entry object used both by the absolute and relative time blackboards. |
| Time_event | - An event object generated on one of the time blackboards indicating that a timer has expired |
| Time_stamp | - A field object that stores the TIME_STAMP portion of an OSF. |
| Trigger | - Defines the conditions for triggering an event on a blackboard. |
Copyright © 1997-2000 The Association of Universities for
Research in Astronomy, Inc. All Rights Reserved.
For more information, contact opushelp@stsci.edu
Last modified: 10 October 2003