PropertyArrayIndex=null with SlaveDeviceTest

MicheleMarcon

I have downloaded and run bacnet4J 1.2, then I have tried to run the SlaveDeviceTest together with the DiscoveryTest. Of course, I have adjusted the IP address.
This is my output:


IAm receivedRemoteDevice(instanceNumber=1968, address=Address(networkNumber=0, macAddress=[a,1,a,47,8,14]), network=null)
ObjectPropertyReference(objectIdentifier=Analog Input 0, propertyIdentifier=Object name, propertyArrayIndex=null)
ObjectPropertyReference(objectIdentifier=Analog Input 0, propertyIdentifier=Units, propertyArrayIndex=null)
ObjectPropertyReference(objectIdentifier=Analog Input 0, propertyIdentifier=Present value, propertyArrayIndex=null)
RemoteDevice(instanceNumber=1968, address=Address(networkNumber=0, macAddress=[a,1,a,47,8,14]), network=null)

This is my code on SlaveDeviceTest


        BACnetObject ai0x = new BACnetObject(localDevice,
                localDevice.getNextInstanceObjectIdentifier(ObjectType.analogInput));
        ai0x.setProperty(PropertyIdentifier.objectName, new CharacterString("AAAAAaaaaAAAA"));
        ai0x.setProperty(PropertyIdentifier.units, EngineeringUnits.centimeters);
        localDevice.addObject(ai0x);

My question is: why is the propertyArray null? Shouldn't it contain my values instead?

Thanks.

mlohbihler

No. An ObjectPropertyReference is a reference to an object property, as the name would suggest. It is not the property value. It is the propertyArrayIndex that is null. A reference does not have a propertyArray.

MicheleMarcon

Thanks! My next question is: how do I get the object property/propertyArray/whathever contains my values?

This is the code from DiscoveryTest:


        for (RemoteDevice d : localDevice.getRemoteDevices()) {
            localDevice.getExtendedDeviceInformation(d);
            List<ObjectIdentifier> oids = ((SequenceOf<ObjectIdentifier>) localDevice.sendReadPropertyAllowNull(d, d
                    .getObjectIdentifier(), PropertyIdentifier.objectList)).getValues();

            PropertyReferences refs = new PropertyReferences();
            for (ObjectIdentifier oid : oids)
                addPropertyReferences(refs, oid);

            PropertyValues pvs = localDevice.readProperties(d, refs);
            // pvs.
            Iterator<ObjectPropertyReference> i=pvs.iterator();
            while (i.hasNext()){
            System.out.println(i.next());
            }
            System.out.println(d);
        }

mlohbihler

That's pretty much it, yes.

MicheleMarcon

On the SlaveDeviceTest, I have set


ai0x.setProperty(PropertyIdentifier.objectName, new CharacterString("AAAAAaaaaAAAA"));  
ai0x.setProperty(PropertyIdentifier.units, EngineeringUnits.centimeters);

How do I get them on the DiscoveryTest?

MicheleMarcon

To clarify: I don't know how to get the property values. The code posted prints the reference instead of the actual values...

Please let me know how to rectify this, thanks.

mlohbihler

    PropertyValues pvs = localDevice.readProperties(d, refs);  
    Iterator&lt;ObjectPropertyReference&gt; i=pvs.iterator();  
    while (i.hasNext()){  
        PropertyValue pv = pvs.get(i.next());
        System.out.println(pv);  
    }

MicheleMarcon

It works! Many thanks! :mrgreen: :mrgreen: :mrgreen: