I create *.pkg file with the following app:

--------------------------------------------------------------------------------------------------
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.ObjectOutputStream;
import java.net.URL;

import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.rule.Package;
import org.drools.compiler.PackageBuilder;

public class DroolsPackageWriter {

       String[] fileNames = { "rulefile1", "rulefile2"};

       public void readWritePackages() {

               for(int i = 0; i < fileNames.length; i++) {
                       try {

                       RuleBase ruleBase = RuleBaseFactory.newRuleBase();
                   PackageBuilder builder = new PackageBuilder();

                   String ruleFile = fileNames[i] + ".drl";
                   System.out.println("Lese:"+ ruleFile);

                   builder.addPackageFromDrl(new
InputStreamReader(DroolsPackageWriter.class.getResourceAsStream(ruleFile)));

                   Package pkg = builder.getPackage();
                   ruleBase.addPackage(pkg);
                   WorkingMemory workingMemory = ruleBase.newStatefulSession();
                   workingMemory.fireAllRules();

                   URL url = DroolsPackageWriter.class.getResource(ruleFile);
                   String file = url.getPath().replaceAll("%20"," ").replaceAll(".drl",
".pkg");
                   File f = new File(file);

                   pkg.writeExternal(new ObjectOutputStream(new FileOutputStream(f)));
                   System.out.println("geschrieben:"+ file);
                       }
                       catch(Exception ex) {
                               ex.printStackTrace();
                       }
               }
       }

       /**
        * @param args
        */
       public static void main(String[] args) {
               DroolsPackageWriter dpw = new DroolsPackageWriter();
               dpw.readWritePackages();

       }

}
--------------------------------------------------------------------------------------------------


I the app where i read the *.pkg files the code looks like this:

---------------------------------------------------------------
String[] rules = new String[]{"rule1.pkg","rule2.pkg" };

RuleBase ruleBase = RuleBaseFactory.newRuleBase();
for (int i = 0; i < rules.length; i++) {
       String ruleFile = rules[i];
       log.debug("Loading file: " + ruleFile);
       pkg = new Package();
       pkg.readExternal(new
ObjectInputStream(this.getClass().getResourceAsStream(ruleFile)));
       ruleBase.addPackage(pkg);
}

WorkingMemory workingMemory = ruleBase.newStatefulSession();
setGlobals(workingMemory);

Object[] facts = { /* anything you want */};
for (int i = 0; i < facts.length; i++) {
Object fact = facts[i];
log.debug("Inserting fact: " + fact);
try {
         workingMemory.insert(fact);
} catch(NullPointerException npe) {
         System.out.println("NPE bei Fact:"+fact);
         npe.printStackTrace();
}
}
workingMemory.fireAllRules();
log.debug("END: runRules()");
}
---------------------------------------------------------------

Hope this helps - to help me !





Wolfgang Laun-2 wrote:
>
> On 7/23/09, Olaf Raether <o.raether@epro.de> wrote:
>>
>> The code looks  like this:
>>
>> RuleBase ruleBase = RuleBaseFactory.newRuleBase();
>> for (int i = 0; i < rules.length; i++) {
>>       Package pkg = getPackage(i);
>>       ruleBase.addPackage(pkg);
>> }
>
>
> I'd expect to find "Package pkg = rules[i];" or similar in the loop.
> Anyway, this doesn't tell how the Package objects were created from your
> two
> rules files, which might be significant.
>
> Do you check for package build errors?
>
> -W
>
>
> for (int i = 0; i < facts.length; i++) {
>>        Object fact = facts[i];
>>        workingMemory.insert(fact);   // <<<<< Exception, when multiple
>> rule
>> files
>> }
>>
>>
>
> _______________________________________________
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>

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