Eclipse Community Forums: OM2M » Question about APoCPath

Help

Home

Home » Eclipse Projects » OM2M » Question about APoCPath

Show: Today's Messages :: Show Polls :: Message Navigator

Question about APoCPath [message #1708378]

Wed, 16 September 2015 06:13

Michael Wang

Messages: 3
Registered: September 2015

Junior Member

Hello,

Our team has built up the om2m in this kind of model : device(LinkitOne), gscl(raspberry pi), nscl(computer), user(web).
And here comes some questions that have bothered me for a long time.

1. In the architecture, what kind of things is considered to be built under the layer of "applications"?
In the Sample IPU example,there are three things under "applications" : LAMP_0, LAMP_1, LAMP_ALL. I guess they belong to "device" field but not the "sensor" field?
Also, I found there mustn't be same name under "applications.

2. Since I want to add more devices to my application when user wants to install that. Do different devices need to have different apocpath?
Cause even I gave them all the same name they can work.
In the Controller.java, I guess public String getAPOCPath method is the most important thing about apocpath in ipu.
If I want to give different devices different apocpath, it seems I need to revise this method to make it return different apocpath whenever doExecute method delivers different ipuId(apocpath).

Thanks for your reading.
These solutions will help me a lot.

Report message to a moderator

Re: Question about APoCPath [message #1709856 is a reply to message #1708378]

Thu, 01 October 2015 14:04

Guillaume Garzone

Messages: 54
Registered: April 2015

Member

Hello,

1) In the smartM2M standard, your devices can be represented as an application in the architecture. Actually, the application resource can represented different objects such as devices or IPUs it-selves. We represented our devices as applications for simplicity in the IPU sample. So for instance, the lamp devices are represented as applications (LAMP_1, etc.). Also, there are different containers under these applications to store the description of the application and the data as content instances.

2) To add more devices to your system you can create new applications representing your devices. The apocpath represents the IPU that makes the interface between smartm2m and your physical devices. So ideally, you will have one IPU per technology used, and then applications representing your devices (that will use the same apocpath but have different names).

The apocpath is really important as you suggest because it allows the platform to route the requests to the right IPU that will execute them.

Hope these elements will help you,
Regards.

Guillaume

Report message to a moderator