How to add a Thing from Extension / How to add new...

aniketa · ‎Mar 30, 2015

I am building a Extension , ThingTemplate is one of the input parameter of my service.

After some processing, Extension is suppose to create new Thing in my TW database.

I have found two methods :

objThing.SaveConfigurationTables();

objThing.persistConfigurationTables();

Are these the methods I should use for storing the Thing ?

Also what is way to add few more properties to ThingTemplate from Extension ?

smanley · ‎Apr 01, 2015

Hi Aniket,

To add a property to a thing template, you will need to import the property definition package member into your Thing.java file.

import com.thingworx.metadata.annotations.ThingworxPropertyDefinition;

import com.thingworx.metadata.annotations.ThingworxPropertyDefinitions;

You will then create the properties using @ThingworxPropertyDefinitions

e.g.

@ThingworxPropertyDefinitions(properties = {

@ThingworxPropertyDefinition(name="StringProperty1", description="Sample string property", baseType="STRING", aspects={"isPersistent:false","isReadOnly:false"}),

@ThingworxPropertyDefinition(name="NumberProperty1", description="Sample number property", baseType="NUMBER", aspects={"isPersistent:false","isReadOnly:false"}),

})

Once a thing is created, and enabled, it is saved in your Thingworx database. The objThing.SaveConfigurationTables() and objThing.persistConfigurationTables() methods are used to add a configuration table to a thing

aniketa · ‎Apr 02, 2015

Hi SaeedMa,

I have created Thing using following code :

ThingTemplate parentThingTemplate = ThingTemplateManager.getInstance().getEntity("FalkonryPredictor");

Thing objThing = new Thing();

objThing.setDescription("VendingMachineTemplateFalkonryPredictor - Thing created by Falkonry Extension");

objThing.setName("VendingMachineTemplateFalkonryPredictor");

objThing.setThingTemplate(parentThingTemplate);

objThing.setThingTemplateName(parentThingTemplate.getName());

objThing.activate();

objThing.EnableThing();

objThing.start();

objThing.RestartThing();

ThingManager.getInstance().createThing(objThing, true);

Point 1 :

By this code thing is created and visible in Composer, but I am not able to run a service related to it.

Getting following error :

"context: com.thingworx.webservices.context.HttpExecutionContext@2474886a][message: Unable to Invoke Service loadResults on VendingMachineTemplateFalkonryPredictor : object is not an instance of declaring class]"

Point 2 :

In this thing properties are inherited from ThingTemplate "FalkonryPredictor". e.g. ID

While creating thing, I want to set ID with predefined value, How to set this ?

I tried setting ID by following code :

objThing.setPropertyValue("ID", obj.get("id"));

But it's not working.

How to add a Thing from Extension / How to add new properties to existing ThingTemplate from Extension.

How to add a Thing from Extension / How to add new properties to existing ThingTemplate from Extension.