Will do.
Can you tell me whether the engine is shared between scripts? Is there a way to
use one engine per script and to start absolute clean (no caches, no refs from
previous runs) just like when the JVM was started?
Thanks,
Andreas
> Am 12.01.2017 um 05:23 schrieb Sundararajan Athijegannathan
> <sundararajan.athijegannat...@oracle.com>:
>
> Will you please submit a bug with a compilable/runnable test case attached?
>
> Thanks,
> -Sundar
>
>> On 11/01/17, 11:09 PM, Andreas Mueller wrote:
>> Hi,
>>
>> it seems I have a problem understanding Nashorn’s bindings...
>>
>> I have multiple scripts, each independent of each other. They should run
>> concurrently with their own context and engine scope bindings. This is
>> created as follows for each script:
>>
>> ScriptEngineManager manager = new ScriptEngineManager();
>> ScriptEngine engine = manager.getEngineByName((String)
>> entity.getProperty("script-language").getValue());
>> if (engine == null)
>> throw new Exception("Engine for script-language '" +
>> entity.getProperty("script-language").getValue() + "' not found!");
>> ScriptContext newContext = new SimpleScriptContext();
>> streamContext.engineScope =
>> newContext.getBindings(ScriptContext.ENGINE_SCOPE);
>>
>> Internally we have a Java-based processor which calls Javascript functions
>> (callbacks). It is always the same thread.
>>
>> It works fine when I start a script the first time. If I stop it (without
>> stopping the JVM) and restart it (it runs through the code above) or if I
>> run another script concurrently, I’m getting problems in so far that calls
>> inside a Javascript callback to Java objects that set data don’t work. The
>> data is not null on the Javascript callback but null inside the Java method.
>>
>> Here is an example callback:
>>
>> stream.create().memoryGroup("queues", "name").onCreate(function
>> (memoryGroup, key) {
>> stream.create().memory(key);
>> print("Add:"+ key+"="+stream.memory(key));
>> });
>>
>> The above “stream.create().memory(key)” is a Java method that has a printout:
>>
>> AddMem: orderpos, mem=HeapMemory{name='orderpos’}
>>
>> But when I retrieve it with "stream.memory(key)” in the print statement of
>> the Javascript function I’m getting:
>>
>> Add:orderpos=null
>>
>> For me this points to the bindings, e.g. a binding from a previous running
>> instance of the script or something else. Can somebody provide some help?
>> What do I need to do to have always a clean instance of a binding when I
>> rerun a script without stopping the JVM?
>>
>> Thanks,
>> Andreas
>>
IIT Software GmbH
Münsterstr. 111, 48145 Münster, Germany
Phone: +49 (0)2506 3049340
Managing Director: Andreas Müller
District Court: Amtsgericht Münster, HRB 16294
VAT-No: DE199945912
This e-mail may contain confidential and/or privileged information. If you are
not the intended recipient (or have received this e-mail in error) please
notify the sender immediately and destroy this e-mail. Any unauthorized
copying, disclosure or distribution of the material in this e-mail is strictly
forbidden.
