JON CLI ProxyFactory.getResource occasionally returns incomplete resource object and method or field access will fail with TypeError: Cannot read property or find function

Issue

• rhq-remoting-cli issue

• the following exception occurs:

  Exception in thread "main" org.rhq.enterprise.client.script.CLIScriptException: javax.script.ScriptException: sun.org.mozilla.javascript.EcmaError: TypeError: Cannot read property "displayValue" from undefined
          at org.rhq.enterprise.client.commands.ScriptCommand.executeScriptFile(ScriptCommand.java:298)
          ...
  Caused by: javax.script.ScriptException: sun.org.mozilla.javascript.EcmaError: TypeError: Cannot read property "displayValue" from undefined
          at com.sun.script.javascript.RhinoScriptEngine.eval(RhinoScriptEngine.java:224)
          at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:249)
          ...
  Caused by: sun.org.mozilla.javascript.EcmaError: TypeError: Cannot read property "displayValue" from undefined
          at sun.org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3654)
          at sun.org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3632)
  

• CLI script occasionally fails when invoking proxy method:

  Exception in thread "main" org.rhq.enterprise.client.script.CLIScriptException: javax.script.ScriptException: sun.org.mozilla.javascript.EcmaError: TypeError: Cannot find function getMessagesAdded in object [10316] queue-07 (JMS Queue::JBossAS7). (<Unknown source>#16) in <Unknown source> at line number 16
      at org.rhq.enterprise.client.commands.ScriptCommand.executeScriptFile(ScriptCommand.java:298)
      ...
  Caused by: javax.script.ScriptException: sun.org.mozilla.javascript.EcmaError: TypeError: Cannot find function getMessagesAdded in object [10316] queue-07 (JMS Queue::JBossAS7). (<Unknown source>#16) in <Unknown source> at line number 16
      at com.sun.script.javascript.RhinoScriptEngine.eval(RhinoScriptEngine.java:179)
      at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:249)
      ...
  Caused by: sun.org.mozilla.javascript.EcmaError: TypeError: Cannot find function getMessagesAdded in object [10316] queue-07 (JMS Queue::JBossAS7). (<Unknown source>#16)