CORBA 2.6.1 Glossary

of PATHMON is called a PATHMON environment.
Pathsend facility
The set of procedures a requester uses to exchange requests and replies with a NonStop TS/MP
server pool. (The actual procedure call to send a messages can have a different name, such as
SERVERCLASS_SEND.) NonStop CORBA uses the Pathsend facility internally to support
invocations of objects running in NonStop TS/MP server pools. A client program can also use the
facility explicitly to send a non-CORBA message to a server pool that is not CORBA compliant.
(Jpathsend)
pax
A utility for extracting a set of files that have been archived as a single file. pax is available on
UNIX and POSIX systems, including HP systems using Open Systems Services (OSS).
persistent identifier (PID)
A value that relates an object to the external entity (for instance, a database record) that the object
represents.
persistent object
An object that must be accessible after the process that hosted it has stopped.
POA
See Portable Object Adapter (POA).
POA manager
A server-side object that contains the processing state for one or more POAs. Developers can use
the POA manager to process, queue, or discard requests. The manager can also activate or
deactivate POAs.
policy
A policy specifies a POA characteristic behavior for objects implemented in that particular POA.
For example, a policy can determine threading, activation, object ID assignment, and so on. Every
POA has default policies if no other one is specified.
polymorphism
The characteristic of object technology that allows a client to make the same request of different
objects and assume that the operation will be performed appropriately for each class of object. For
example, a display operation on a video object does not result in the same behavior as a display
operation on a text file, but the client treats both in the same way.
port number
An addressing component that associates multiple local destinations with a single network (IP)
address. For example, a TCP/IP process listens on one IP address but can route requests to
different local processes based on port number.
Portable Interceptor
Interceptors intercept the flow of a request-reply sequence. Request interceptors are used to enable