[rules-users] help! the field *** is not visible

[Wolfgang Laun]

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 at 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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