Re: [rules-users] Unsatisfied rule fires - Drools bug?

Hi, I am working with Drools to implement a high-profile rules-engine. I have two rules defined. Clearly, only the first should fire, but both do. Here is my DRL: package com.sample import com.sample.DroolsTest.Request; rule "ExpensiveCanonShopper0" when Request( attributeMap["camera0"] == "canon" && attributeMap["price0"] >= 500 ) then System.out.println("ExpensiveCanonShopper0"); end rule "ExpensiveCanonShopper1" when Request( attributeMap["camera1"] == "canon" && attributeMap["price1"] >= 500 ) then System.out.println("ExpensiveCanonShopper1"); end And the Java class to execute it: public class DroolsTest { @SuppressWarnings({ "rawtypes", "unchecked" }) public static final void main(String[] args) { try { //Loading the Rules System.out.println("Loading rules"); RuleBase ruleBase = readRule(); StatelessSession workingMemory = ruleBase.newStatelessSession(); System.out.println("Firing rules"); Map map = new HashMap(); map.put("camera0", "canon"); map.put("price0", 600); Request request = new Request(); request.setAttributeMap(map); workingMemory.execute(request); } catch (Throwable t) { t.printStackTrace(); } } /** * Please note that this is the “low level” rule assembly API. */ private static RuleBase readRule() throws Exception { //read in the source Reader source = new FileReader(new File("drl", "Generated.drl")); //optionally read in the DSL (if you are using it). //Reader dsl = new InputStreamReader( DroolsTest.class.getResourceAsStream( “/mylang.dsl” ) ); //Use package builder to build up a rule package. //An alternative lower level class called “DrlParser” can also be used… PackageBuilder builder = new PackageBuilder(); //this wil parse and compile in one step //NOTE: There are 2 methods here, the one argument one is for normal DRL. builder.addPackageFromDrl( source ); if (builder.hasErrors()) { PackageBuilderErrors errors = builder.getErrors(); throw new RuntimeException("Error adding package to builder: " + errors.toString()); } //Use the following instead of above if you are using a DSL: //builder.addPackageFromDrl( source, dsl ); //get the compiled package (which is serializable) Package pkg = builder.getPackage(); //add the package to a rulebase (deploy the rule package). RuleBase ruleBase = RuleBaseFactory.newRuleBase(); ruleBase.addPackage( pkg ); return ruleBase; } public static class Request { private Map attributeMap; public Map getAttributeMap() { return attributeMap; } public void setAttributeMap(Map attributeMap) { this.attributeMap = attributeMap; } } } The output is this, meaning both rules fired: Loading rules Firing rules ExpensiveCanonShopper1 ExpensiveCanonShopper0 I have two questions: 1. Is this a bug, or am I doing something wrong? Only "ExpensiveCanonShopper0" should fire. 2. I am pretty sure this is somehow related to the fact that I'm using Map attributes, and not POJO to get "price0" and "camera0". My issue is that I won't know the parameters in advance (they are coming in a URL), so I can't pre-declare them, and thus need something dynamic like a Map. Is this how Drools is intended to be used? The documentation appears very POJO-centric. I am using Drools 5.2 Thank you! -Matt -- View this message in context: http://drools.46999.n3.nabble.com/Unsatisfied-rule-fires-Drools-bug-tp337... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users