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Using the VPO Application Programming Interfaces
The VPO Operator APIs
Chapter 4 189
The VPO Interfaces and the VPO Operator API —
A Comparison
Figure 4-9 shows the different methods by which the VPO Interfaces and
the VPO Operator API access VPO data. The VPO Interfaces must open
an interface to the information flow on the agent or server; register to
receive or send information; be given permission to receive or send that
information; and finally close the interface. The VPO Operator APIs,
however, access the VPO database directly, without opening an interface
instance, to perform the required action(s).
Figure 4-9 Comparison of the VPO Service APIs and the VPO Operator APIs
Information
Flow
VPO Database
VPO Interfaces VPO Operator APIs
External Application