2:22 a.m.
Before the lastest snapshot I had rules like:
rule "Device is NotOperating" dialect "mvel"
when
device: Device(connected == true)
...
then
insertLogical(
DeviceOperatingStateTimeline.start(new DeviceOperatingState(device.id,
NotOperating()))
)
end
Now I get the error:
Caused by: [Error: unable to access property (null parent): device]
[Near : {... Unknown ....}]
If I simply reference the 'device' variable before the insertLogical then
the rule compiles and works:
then
Device d = device // System.out.println(device) works as well
insertLogical(
DeviceOperatingStateTimeline.start(new DeviceOperatingState(device.id,
NotOperating()))
)
end
I don't even know where to begin to look for such a cause. I've debugged
deep in the MVEL compilation but no joy.
Also, many of my other rules no longer compiler, also seemingly mvel
related. I've thunked back to 5.0.1 and now I have green bars again.
-barry
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2:24 a.m.
Ok, I see from previous posts that we are having mvel issues. Cool.
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12:29 p.m.
Same problem here but in a Rule containing an accumulate:
1. rule "fromAccumulateRule"
2. dialect "mvel"
3. when
4. fc : Car( ) from accumulate ( Car( b : brand)
5. init( Car c= new Car(); ),
6. action( c.brand = c.brand + b; ),
7. result( c )
8. )
9. then
10. insert (fc);
11. end
The error is the same:
1. Caused by: org.drools.RuntimeDroolsException: [Error: unable to access
property (null parent): b]
2. [Near : {... Unknown ....}]
A full stacktrace is available here: http://drools.pastebin.com/f1638db0e
Best,
On Tue, Jan 26, 2010 at 10:24 PM, Barry Kaplan <groups1(a)memelet.com> wrote:
Ok, I see from previous posts that we are having mvel issues. Cool.
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8:27 p.m.
Yes that is the MVEL bug that a fix is on the way for.
On Wed, Jan 27, 2010 at 10:29 PM, Esteban Aliverti <
esteban.aliverti(a)gmail.com> wrote:
Same problem here but in a Rule containing an accumulate:
1. rule "fromAccumulateRule"
2. dialect "mvel"
3. when
4. fc : Car( ) from accumulate ( Car( b : brand)
5. init( Car c= new Car(); ),
6. action( c.brand = c.brand + b; ),
7. result( c )
8. )
9. then
10. insert (fc);
11. end
The error is the same:
1. Caused by: org.drools.RuntimeDroolsException: [Error: unable to
access property (null parent): b]
2. [Near : {... Unknown ....}]
A full stacktrace is available here: http://drools.pastebin.com/f1638db0e
Best,
On Tue, Jan 26, 2010 at 10:24 PM, Barry Kaplan <groups1(a)memelet.com>wrote:
>
> Ok, I see from previous posts that we are having mvel issues. Cool.
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> View this message in context:
> http://n3.nabble.com/Problems-with-latests-5-1-SNAPSHOT-tp140043p140046.html
> Sent from the Drools - Dev mailing list archive at Nabble.com.
> _______________________________________________
> rules-dev mailing list
> rules-dev(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-dev
>
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Michael D Neale
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blog: michaelneale.blogspot.com
5196
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3 comments
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participants (3)
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Barry Kaplan -
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Michael Neale