gistfile1.txt

    public static class Measurement {
        private String id;
        private String val;

        public Measurement(String id, String val) {
            this.id = id;
            this.val = val;
        }

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getVal() {
            return val;
        }

        public void setVal(String val) {
            this.val = val;
        }
    }

    @Test
    public void testVariableAccessors() {
        // DROOLS-5548
        String str =
                "package com.sample;" +
                "global java.util.Set controlSet;\n" +
                "import " + Measurement.class.getCanonicalName() + ";\n" +
                "" +
                "declare A\n" +
                " x: String\n" +
                "end\n" +
                "" +
                "declare B\n" +
                " a: A\n" +
                "end\n" +
                "" +
                "function String dummyFunction(A b) {\n" +
                " return \"test\";\n" +
                "}\n" +
                "\n" +
                "rule \"insertB\"\n" +
                "when\n" +
                "then\n" +
                    "drools.insert(new B(new A()));" +
                "end;" +
                "rule \"will execute per each Measurement having ID color\"\n" +
                "no-loop\n" +
                "when\n" +
                " Measurement( id == \"color\", $colorVal : val )\n" +
                " $b: B()\n" +
                " $val: String() from dummyFunction($b.a)\n" +
                "then\n" +
                " controlSet.add($colorVal);\n" +
                "end";

        KieSession ksession = getKieSession( str );

        HashSet<Object> hashSet = new HashSet<>();
        ksession.setGlobal("controlSet", hashSet);

        ksession.insert(new Measurement("color", "red"));

        int ruleFired = ksession.fireAllRules();

        assertEquals( 2, ruleFired );
        assertEquals( "red", hashSet.iterator().next() );
    }