Re: [rules-users] drools design question

Actually what you want is that only the rules from the DRLs that you want are activated and their consequences run (a subtle but important distinction). Put another way it doesn't matter how many rules are in the knowledge base and evaluated as long as only the rules you want are matched. There are two main approaches you could do to control this. The first is to use agenda groups with rules in different DRLs being in different agenda groups, this then lets you control which groups consequences are run and in what order to. Another approach is to introduce some additional facts into the working memory - "EnabledRuleGroup(String groupName)". The first condition in each rule would then be the statement "exists EnabledRuleGroup(name =="myDlrFilenameXYZ") Then only rules matching the statement would be evaluated. There are probably other variations around this too - things like agenda filters to filter out the activations you don't want. Thomas ************************************************************************************** This message is confidential and intended only for the addressee. If you have received this message in error, please immediately notify the postmaster(a)nds.com and delete it from your system as well as any copies. The content of e-mails as well as traffic data may be monitored by NDS for employment and security purposes. To protect the environment please do not print this e-mail unless necessary. NDS Limited. Registered Office: One London Road, Staines, Middlesex, TW18 4EX, United Kingdom. A company registered in England and Wales. Registered no. 3080780. VAT no. GB 603 8808 40-00 **************************************************************************************