HP Retail Manageability - White Paper

HP Retail Windows® Management Interface

Provider

The HP Retail WMI Provider extends the concepts of CMI to HP retail peripherals,

enabling access to information about the operational status of those devices. The

WMI provider runs as a service and acts as a mediator between the Common

Information Model (CIM) Object Manager and the managed point of sale

peripherals. It supports the OLE for Retail POS (OPOS) implementation of the

UnifiedPOS (UPOS) specification version 1.13, although most peripheral device

service objects only support the properties and statistics that are most relevant to

HP’s retail customers.

The WMI Provider obtains statistics and property values from peripheral OPOS

drivers and copies them into the CIM repository used by WMI. Please note that the

current version of the UPOS specification allows only one application at a time to

claim a device, so the data from the WMI provider may become stale if the retail

application doesn’t release devices regularly. The WMI provider will attempt to

reclaim devices periodically to refresh its data, and will update the

InformationLastUpdated property at the first opportunity, then release the device.

The timestamp value uses the WMI default UTC date-time format.

The namespace used is root\hp\retail, which can be accessed using all of the

techniques described in the previous section. For example, use the following script

to list when information was last updated for each claimed HP retail peripheral:

Const wbemFlagReturnImmediately = 16

Const wbemFlagForwardOnly = 32

lFlags = wbemFlagReturnImmediately +

wbemFlagForwardOnly

strService =

"winmgmts:{impersonationlevel=impersonate}//"

strComputer = "."

strNamespace = "/root/hp/retail"

strQuery = "select * from Peripheral"

Set objWMIService = GetObject(strService & strComputer

& strNamespace)

Set colItems =

objWMIService.ExecQuery(strQuery,,lFlags)

Counter = 1

For Each objItem In colItems

If (objItem.PhysicalDeviceDescription <> "") Then

WScript.Echo Counter & vbTab &

objItem.InformationLastUpdated & vbTab &

objItem.PhysicalDeviceDescription

Counter = Counter + 1

End If