PropertyServer
[Components, Stand-Alone Components, C++, Linux]

Centralised database of properties. More...

Centralised database of properties.

This component can be used as a centralised database of properties. To see how to get other components to read their properties from here, see Orca Configuration Files.

Provides

• orca_interface_home
• orca_interface_properties [PropertyServer.Provides.Properties]
• orca_interface_status

Requires

• none

Initial properties

Properties in the .cfg file of the form:

• Config.InitProperty.<Key>=

will be loaded into the propertyserver's database on initialisation.

Persistance

If 'Config.PersistanceFile' is set, propertyserver is persistant. That is, it loads properties from this file on startup and saves those properties on shutdown.

Properties that are set explicitly in the config file over-write persitant properties.

Empty Properties

Properties are a set of key-value pairs. Ice Properties cannot differentiate between:

• a key not being set, and
• a value set to an empty string.

To handle this, the special value "property-not-set" is used to denote value-not-set. It will be internally translated to an empty string.

Authors

Alex Brooks