Most of the time the following rule works, but every now and then when I get back large numbers it throws an error.
import java.lang.*
import org.openhab.core.library.types.*
rule "TankUtility JSON parsing"
when
Item TankUtility received update
then
var String json = TankUtility.state.toString
var Number battery = new Double(transform("JSONPATH", "$device.lastReading.battery", json))
var Number tank = new Double(transform("JSONPATH", "$device.lastReading.tank", json))
postUpdate(TankUtility_Battery, battery)
postUpdate(TankUtility_Tank, tank)
end
Error:
2015-10-23 18:53:55.206 [INFO ] [runtime.busevents ] - TankUtility state updated to {"device":{"name":"Generator Tanks","address":"144 Christian Tabler Rd. S, Martinsburg, WV 25404","capacity":"198","lastReading":{"tank":44.1776,"temperature":64.57,"time":1445629597103,"time_iso":"2015-10-23T19:46:37.103Z"}}}
2015-10-23 18:53:58.801 [ERROR] [o.o.c.s.ScriptExecutionThread ] - Error during the execution of rule 'TankUtility JSON parsing'
java.lang.NullPointerException: null
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1838) ~[na:1.8.0_45]
at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110) ~[na:1.8.0_45]
at java.lang.Double.parseDouble(Double.java:538) ~[na:1.8.0_45]
at java.lang.Double.<init>(Double.java:608) ~[na:1.8.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_45]
at java.lang.reflect.Constructor.newInstance(Constructor.java:422) ~[na:1.8.0_45]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter._evaluateConstructorCall(XbaseInterpreter.java:516) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.internalEvaluate(XbaseInterpreter.java:218) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter._evaluateVariableDeclaration(XbaseInterpreter.java:601) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.internalEvaluate(XbaseInterpreter.java:218) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter._evaluateBlockExpression(XbaseInterpreter.java:321) ~[na:na]
at sun.reflect.GeneratedMethodAccessor44.invoke(Unknown Source) ~[na:na]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.internalEvaluate(XbaseInterpreter.java:218) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.evaluate(XbaseInterpreter.java:204) ~[na:na]
at org.openhab.model.script.internal.engine.ScriptImpl.execute(ScriptImpl.java:59) ~[na:na]
at org.openhab.core.scriptengine.ScriptExecutionThread.run(ScriptExecutionThread.java:44) ~[na:na]
2015-10-23 18:53:58.801 [ERROR] [o.o.c.s.ScriptExecutionThread ] - Error during the execution of rule 'TankUtility JSON parsing'
java.lang.NullPointerException: null
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1838) ~[na:1.8.0_45]
at sun.misc.FloatingDecimal.parseDouble(FloatingDecimal.java:110) ~[na:1.8.0_45]
at java.lang.Double.parseDouble(Double.java:538) ~[na:1.8.0_45]
at java.lang.Double.<init>(Double.java:608) ~[na:1.8.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_45]
at java.lang.reflect.Constructor.newInstance(Constructor.java:422) ~[na:1.8.0_45]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter._evaluateConstructorCall(XbaseInterpreter.java:516) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.internalEvaluate(XbaseInterpreter.java:218) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter._evaluateVariableDeclaration(XbaseInterpreter.java:601) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.internalEvaluate(XbaseInterpreter.java:218) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter._evaluateBlockExpression(XbaseInterpreter.java:321) ~[na:na]
at sun.reflect.GeneratedMethodAccessor44.invoke(Unknown Source) ~[na:na]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.internalEvaluate(XbaseInterpreter.java:218) ~[na:na]
at org.eclipse.xtext.xbase.interpreter.impl.XbaseInterpreter.evaluate(XbaseInterpreter.java:204) ~[na:na]
at org.openhab.model.script.internal.engine.ScriptImpl.execute(ScriptImpl.java:59) ~[na:na]
at org.openhab.core.scriptengine.ScriptExecutionThread.run(ScriptExecutionThread.java:44) ~[na:na]