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