The Object Registry contains LWM2M objects based on
the LWM2M Object model. An object is a specified collection of
reusable resources and represents a particular type of
physical sensor, actuator, connected object or other data
source. The reusable resources, which make up the Object,
represent static and dynamic properties of the connected
physical object and the embedded software contained
therein. The Internet Protocol for the
networking of Smart Objects (IPSO) Alliance seeks
to register extensible smart object definitions based on
the OMA LWM2M object resource model, with the ultimate aim
of ensuring device and application interoperability through
an agreed set of objects, resources, properties,
attributes, and operations. Since IPSO has pre-defined data
models for a wide variety of device types, based on the OMA
LWM2M standard, they are readily usable by any application
that implements OMA LWM2M. Object
Definition files are XML files that begin with either
an <ObjectDefinition> tag or
an <ObjectDefinitions> tag.
The object registry contains predefined objects and it is
possible to define your new objects. It is possible to view
an existing predefined object. It is also possible
to create an object. You will be able to view the
object created but will not be able to delete it.
To define a single object and any accompanying resources, you need to define in the specified XML model. For example, the following XML defines an object with ID 3336:
<LWM2M xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://openmobilealliance.org/tech/profiles/LWM2M.xsd">
<Object ObjectType="MODefinition">
<Name>My Object 1 name</Name>
<Description1> Description1
</Description1>
<ObjectID>3336</ObjectID>
<ObjectURN>urn:oma:lwm2m:ext:3336</ObjectURN>
<MultipleInstances>Multiple</MultipleInstances>
<Mandatory>Optional</Mandatory>
<Resources>
<Item ID="5514">
<Name>My Resource 0</Name>
<Operations>R</Operations>
<MultipleInstances>Single</MultipleInstances>
<Mandatory>Mandatory</Mandatory>
<Type>String</Type>
<RangeEnumeration/>
<Units/>
<Description> Resource Description
</Description>
</Item>
</Resources>
</Object>
</LWM2M>What's Inside
This section contains the following pages: