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Integration Facilities of the HP OpenView NNM Core Platform
The OpenView Windows API
Chapter 6232
Maps, Submaps, and Symbols
A map is a collection of OVW objects and their relationships. Users don’t
view maps directly - they view windows called submaps that display a
subset of map information.
Users, not applications, create maps. Users can create several maps, and
they can also view maps control which applications operate on the
various maps. Whereas users create maps and define their scope,
applications dynamically update maps to reflect the state of the
management environment.
A submap is a collection of related symbols that are displayed in a single
graphical window. Submaps essentially provide a view into the map
object space. Each submap displays a different perspective of the
information in the map, with the submaps typically organized in a
hierarchical fashion. OpenView submaps provide several layout
algorithms for symbols, including bus, star, ring, row/column, and
point-to-point. Applications can also set or change the color images that
are used as map backgrounds.
Symbols can be placed in OpenView submaps to represent objects in the
OpenView database, such as nodes, connections, or agents. Symbols can
also represent collection of objects, such as a subnets or connections.
Each symbol is identified by its symbol type. The symbol type is defined
by a symbol class/subclass pair. The symbol class defines the symbol
category, while the symbol subclass defines a particular element within
that class.
Symbols can be made executable. If an operator selects an executable
symbol, a predefined action is started. Symbols can also change color to
indicate status, e.g. green for normal, or red for critical. New symbols can
be added by providing icon files and ASCII registration files.
VPO uses maps, submaps and symbols to represent IP networks. The
hierarchy can be explored from the “root” (internet) level, down to the
subnets, devices, and finally to agents.
VPO provides you with a rich set of predefined symbol classes and
subclasses. Figure 6-2 on page 233 shows some of the symbol classes and
subclasses provided by VPO.