Hi,Is it possible to run script evaluations in a separated thread ? I made my own script engine which uses the javascript engine.I have something like that :
public Object eval(String script, Bindings n) throws ScriptException {
ScriptThread thread = new ScriptThread(javascriptEngine,script,n);
thread.start();
long startTime = System.currentTimeMillis();
while(System.currentTimeMillis()-startTime < 10000 && thread.getResult() == null);
Object result = thread.getResult();
if(result == null) {
throw new ScriptException("Script execution was too long");
}
return result;
And the scriptThread is simply : @Override
public void run() {
try {
result = engine.eval(script, bindings);
} catch (ScriptException e) {
e.printStackTrace();
}
}
But when I run this code I have :
Exception in thread "Thread-2" java.lang.NullPointerException
at org.activiti.engine.impl.scripting.BeansResolverFactory.containsKey(BeansResolverFactory.java:30)
at org.activiti.engine.impl.scripting.ScriptBindings.containsKey(ScriptBindings.java:52)
at javax.script.SimpleScriptContext.getAttributesScope(Unknown Source)
at com.sun.script.javascript.ExternalScriptable.put(Unknown Source)
at com.sun.script.javascript.RhinoScriptEngine.getRuntimeScope(Unknown Source)
at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at com.sun.script.javascript.RhinoScriptEngine.eval(Unknown Source)
at javax.script.AbstractScriptEngine.eval(Unknown Source)
at xxx.ScriptThread.run(ScriptThread.java:23)
The line where the exception is thrown is (in BeansResolverFactory.java:30) :
return Context.getProcessEngineConfiguration().getBeans().containsKey(key);
And this is "Context.getProcessEngineConfiguration()" which returns "null". Here's the code of this part in 'Context.java:38' :
public static ProcessEngineConfigurationImpl getProcessEngineConfiguration() {
Stack<ProcessEngineConfigurationImpl> stack = getStack(processEngineConfigurationStackThreadLocal);
if (stack.isEmpty()) {
return null;
}
return stack.peek();
}
Do you have any idea to perform this ?
