[rules-users] RuleAgent - loading rules help ?

[Ivan Peshev ( M-Tel )]

Here is some more details:

*         Currently our system loads rules from Guvnor installed on a server (version 5.0.0)
The problem is that there is no way to debug remotely the rules which are already deployed on Guvnor.

So I was wondering "what if I load the rule I need to debug from my local machine instead.... maybe then I'll be able to debug it..."

*         On my local machine I have drools 5.1.0

Here is part of the original code:
--------------------------------
      public synchronized void loadRulebasesDefinition() {
            ruleBaseList = RulesMapper.getRulesMapper().retrieveAllRuleBases();

            for (Entry<Integer, Rule> entry : ruleBaseList.entrySet()) {
                  Rule currentRuleDefinition = entry.getValue();

                  Properties ruleBaseProperties = createRuleBaseProperties(currentRuleDefinition);
                  RuleAgent agent = RuleAgent.newRuleAgent(ruleBaseProperties);
                  currentRuleDefinition.setRuleBase(agent.getRuleBase());
            }
      }

      private Properties createRuleBaseProperties(Rule ruleDefinition) {
            Properties properties = new Properties();
            properties.setProperty("url", ruleDefinition.getRuleBaseURL());
            properties.setProperty("poll", Integer.toString(ruleDefinition.getRuleBasePoll()));
            return properties;
      }
--------------------------------
The info about the rules is retrieved by the Mapper class from a DB and the result is a map:
Map<Integer, Rule> ruleBaseList

--------------------------------
So I modified the loadRulebasesDefinition() method and I changed the url info in the DB for some of the rules to start with "local:" and to point to a location on my machine:
----------------------------------
      public synchronized void loadRulebasesDefinition() {
            ruleBaseList = RulesMapper.getRulesMapper().retrieveAllRuleBases();

            for (Entry<Integer, Rule> entry : ruleBaseList.entrySet()) {
                  Rule currentRuleDefinition = entry.getValue();

                  Properties ruleBaseProperties = createRuleBaseProperties(currentRuleDefinition);
                  if (ruleBaseProperties.getProperty("url").startsWith("local:"))
                  {
                        try {
                             String path = ruleBaseProperties.getProperty("url").replaceAll("local:", "");
                             File file = new File(path);
                             Reader source = new InputStreamReader(new FileInputStream(file));
                             PackageBuilder builder = new PackageBuilder();
                             builder.addPackageFromDrl( source );
                             org.drools.rule.Package pkg = builder.getPackage();
                             RuleBase ruleBase = RuleBaseFactory.newRuleBase();
                             ruleBase.addPackage( pkg );
                             currentRuleDefinition.setRuleBase(ruleBase);
                        } catch (DroolsParserException e) {
                             // TODO Auto-generated catch block
                             e.printStackTrace();
                        } catch (IOException e) {
                             // TODO Auto-generated catch block
                             e.printStackTrace();
                        }
                  }
                  else
                  {
                        RuleAgent agent = RuleAgent.newRuleAgent(ruleBaseProperties);
                        currentRuleDefinition.setRuleBase(agent.getRuleBase());
                  }
            }
      }
--------------------------------
      When I start the project it looks like working,
But when I try to "debug as Drools application" it goes to some point - loads some rules from URLs etc
- and boom:
Exception in thread "main" org.drools.RuntimeDroolsException: [Error: not a statement, or badly formed structure]
[Near : {... Unknown ....}]


Any idea ?
Thanks & Best regards
Ivan



From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Esteban Aliverti
Sent: Monday, August 08, 2011 1:32 PM
To: Rules Users List
Subject: Re: [rules-users] RuleAgent - loading rules help ?

Which version of drools are you using?
If you are using a change-set to feed you kagent, then you can use other protocols rather than http to get your rules from: file://, classpath://

Best Regards,

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com

2011/8/8 Ivan Peshev ( M-Tel ) <ivan.peshev at mobiltel.bg<mailto:ivan.peshev at mobiltel.bg>>
Hello,

Is there a way to tell RuleAgent to load rules not only from remote URL ?
i.e. some rules from URL and some rules from LOCAL path on my computer.
(e.g.: c:\some\folder\rule.drl)

Or if it's not possible exactly that way is there another way to have some rules loaded from URLs and some rules loaded from local path ?



Best Regards
Ivan


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