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

[Michael Anstis]

A better approach would be to use:-

rule "system will execute 'tc' command"
 when
    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

This assumes you insert Server facts into working memory and they have a
"getMessage" property.

Normally you'd use eval when you are unable to leverage DRL. Their use is
normally discouraged. Also, your usage is incorrect; please read the
documentation.

With kind regards,

Mike

2011/4/12 赵慧 <zhaoh at hpnl.ac.cn>

>  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
>
>
>
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
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