Still, accessing the class field com.sample.Server.Message in eval() in this
way is almost certainly not a good approach.
But note that
dialect "mvel"
may be written preceding all the rules it should apply to.
-W
On 12 April 2011 14:38, John Peterson <john.peterson.gv3k(a)statefarm.com>wrote:
Try adding 'dialect "mvel"' (no single quotes)
after the rule name to the
top of each of the rules. I have seen this error before and doing this
resolved the issue.
>hello,everyone!I wrote a rule with Drools,but the error told me that the
field Server.Message is not visible, I can't find how it happens. Please
>help me, I am almost exhausted with it. thank you.
>the rules are as follows:
>
>package com.sample
>import com.sample.Server;
>
>rule "system will execute 'tc' command"
> when
> eval(Server.Message>8388608)
> then
> System.out.println("The network is so crowd that it needs
repairing.");
> Runtime.getRuntime().exec("tc");#execute the "tc" command end
>
>rule "caution"
> when
> eval(Server.Message==8388608)
> then
> System.out.println("caution!The network maybe will get blocked
very soon."); end
>
>rule "fluent network"
> when
> eval(Server.Message<8388608)#conditions
> then
> System.out.println("the current network is very good");
> #actions
>end
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