Hi all,
i tried to create a Service following this example:
http://support.ptc.com/cs/help/thingworx_hc/thingworx_edge/index.jspx?id=javasdk_topics-c_javasdk_service_adding_definition&action=show
but somehow it does not work for me.
I am able to create Thing and Properties without annotations (Properties are also set correctly on the server), but when i try and copy the sxample code from the Documentation i encounter a problem.
I am able to see the Service in the "Browse Remote Services" section and i can also enter the parameters, but everytime i try to execute the Service i get this error:
Unable to Invoke Service Add on Simple1 : Service Handler For [Add] Does Not Exist On Thing [Simple1]
i know this error occurs when i try to test a service without saving but i did save it.
I created a simple thing which only sends a random int to my server.
See my Code for the SimpleTing1 here:
package com.tinkerforge;
import java.util.Random;
import com.thingworx.communications.client.ConnectedThingClient;
import com.thingworx.communications.client.things.VirtualThing;
import com.thingworx.metadata.FieldDefinition;
import com.thingworx.metadata.PropertyDefinition;
import com.thingworx.metadata.ServiceDefinition;
import com.thingworx.metadata.annotations.ThingworxServiceDefinition;
import com.thingworx.metadata.annotations.ThingworxServiceParameter;
import com.thingworx.metadata.annotations.ThingworxServiceResult;
import com.thingworx.metadata.collections.FieldDefinitionCollection;
import com.thingworx.types.BaseTypes;
import com.thingworx.types.collections.AspectCollection;
import com.thingworx.types.constants.Aspects;
import com.thingworx.types.constants.CommonPropertyNames;
import com.thingworx.types.constants.DataChangeType;
import com.thingworx.types.primitives.BooleanPrimitive;
import com.thingworx.types.primitives.IntegerPrimitive;
import com.thingworx.types.primitives.NumberPrimitive;
import com.thingworx.types.primitives.StringPrimitive;
public class SimpleThing extends VirtualThing implements Runnable {
private static final long serialVersionUID = 1L;
public SimpleThing(String name, String description, ConnectedThingClient client) throws Exception {
super(name, description, client);
//Create the property definition with name, description, and baseType
PropertyDefinition property1 = new PropertyDefinition(
"Property1",
"Description for Property1",
BaseTypes.NUMBER);
//Create an aspect collection to hold all of the different aspects
AspectCollection aspects = new AspectCollection();
//Add the dataChangeType aspect
aspects.put(Aspects.ASPECT_DATACHANGETYPE,
new StringPrimitive(DataChangeType.ALWAYS.name()));
//Add the dataChangeThreshold aspect
aspects.put(Aspects.ASPECT_DATACHANGETHRESHOLD, new NumberPrimitive(0.0));
//Add the cacheTime aspect
aspects.put(Aspects.ASPECT_CACHETIME, new IntegerPrimitive(-1));
//Add the isPersistent aspect
aspects.put(Aspects.ASPECT_ISPERSISTENT, new BooleanPrimitive(false));
//Add the isReadOnly aspect
aspects.put(Aspects.ASPECT_ISREADONLY, new BooleanPrimitive(false));
//Add the pushType aspect
aspects.put("pushType", new StringPrimitive(DataChangeType.ALWAYS.name()));
//Add the defaultValue aspect
aspects.put(Aspects.ASPECT_DEFAULTVALUE, new NumberPrimitive(2));
//Set the aspects of the property definition
property1.setAspects(aspects);
//Add the property definition to the Virtual Thing
this.defineProperty(property1);
//Put this code in the constructor (or a method called from the constructor)
ServiceDefinition serviceDef = new ServiceDefinition(
"Add",
"Add two numbers");
FieldDefinitionCollection parameterFields =
new FieldDefinitionCollection();
parameterFields.addFieldDefinition(
new FieldDefinition(
"p1",
"The first addend of the operation",
BaseTypes.NUMBER)
);
parameterFields.addFieldDefinition(
new FieldDefinition(
"p2",
"The second addend of the operation",
BaseTypes.NUMBER)
);
FieldDefinition resultField = new FieldDefinition(
CommonPropertyNames.PROP_RESULT,
"The sum of the two parameters",
BaseTypes.NUMBER);
serviceDef.setParameters(parameterFields);
serviceDef.setResultType(resultField);
super.defineService(serviceDef);
super.initialize();
}
public Double Add(Double p1, Double p2) throws Exception {
return p1 + p2;
}
public void set(){
try {
setProperty("Property1", randInt(10,700));
System.out.println("Property for Simple Thing sent to Server");
updateSubscribedProperties(1);
} catch (Exception e) {
e.printStackTrace();
}
}
public static int randInt(int min, int max) {
Random rand = new Random();
int randomNum = rand.nextInt((max - min) + 1) + min;
return randomNum;
}
@Override
public void processScanRequest() throws Exception {
// Be sure to call the base classes scan request
super.processScanRequest();
// Execute the code for this simulation every scan
this.set();
}
@Override
public void run() {
try {
this.getClient().shutdown();
} catch (Exception x) {
}
}
}
Thanks for your help,
Lukas
