If you take a look at the Verifier it goes through the Drools AST with a visitor pattern. It starts by using getting the PackageDescr using DrlParser, this uses Drools internals so be warned that it might change in the future.
Reader drlReader = new InputStreamReader( stream ); PackageDescr descr = new DrlParser().parse( drlReader ); After that it goes through the PackageDescr using PackageDescrVisitor. RuleDescrVisitor shows how to get the condition part from each rule. https://github.com/droolsjbpm/drools/blob/master/drools-verifier/src/main/java/org/drools/verifier/visitor/PackageDescrVisitor.java https://github.com/droolsjbpm/drools/blob/master/drools-verifier/src/main/java/org/drools/verifier/visitor/RuleDescrVisitor.java Toni On Oct 3, 2011, at 8:11 PM, Mark Proctor wrote: > On 03/10/2011 18:03, Wolfgang Laun wrote: >> A condition does not have a "name", as you write; values of the cells >> below a condition are (usually) literals. >> >> There is no API for extracting parts of a spreadsheet. You can look at >> the Drools source code (in the packages org.drools.decisiontable and >> .../parser) and write whatever you need - it is not too difficult. > You can also look at drools-verifier, as that shows ho to analyse > resulting rule fragments. > > Mark >> >> -W >> >> >> On 3 October 2011 17:05, RaviCKota<ravi.k...@wellsfargo.com> wrote: >>> Hi All, for suppose I have a DecisionTable like below >>> >>> CONDITION ACTION >>> ----------------------------- >>> COND1 ACTION1 >>> COND2 ACTION2 >>> COND3 ACTION3 >>> ----------------------------- >>> >>> This is just a representation of the DecisionTable. So I need to retrieve >>> all the conditions and store them into a Collection like Set. Does Drools >>> provide any such feature. >>> >>> We load the drools as below >>> PackageBuilder builder = new PackageBuilder(); >>> builder.addPackageFromDrl(new StringReader(drl)); //drl is the filepath of >>> decisiontable excel >>> >>> // add the package to a rulebase (deploy the rule package). >>> RuleBase ruleBase = RuleBaseFactory.newRuleBase(); >>> ruleBase.addPackage(builder.getPackage()); >>> >>> I tried to look into api of RuleBase, tried to get the packages, Rules, >>> Consequence, etc etc, but could not find any method, that gets me the >>> condition name. >>> >>> When I tried to do >>> Package[] packages = rulebase.getPackages(); >>> >>> for(Package pack : packages){ >>> System.out.println("Package Name is : "+pack.getName()); >>> Rule[] rules = pack.getRules(); >>> for(Rule rule : rules){ >>> System.out.println("Rule name is : "+rule.getName()); >>> >>> All I get is some representation of each row, but I'm specifically looking >>> for the value of the first column (CONDITION) for each rule. >>> >>> Please offer some guidance here. >>> >>> -- >>> View this message in context: >>> http://drools.46999.n3.nabble.com/Is-it-possible-to-retrieve-the-collection-of-Conditions-from-DecisionTable-tp3390026p3390026.html >>> Sent from the Drools: User forum mailing list archive at Nabble.com. >>> _______________________________________________ >>> 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 >> >> > > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users
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