Examples with PatternDescr org.drools.drl.ast.descr.PatternDescr used on opensource projects

Example 26 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method createPredicateRule.

private void createPredicateRule(final PackageDescr packageDescr, final String expression) {
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Cheese.class.getName(), "stilton");
    lhs.addDescr(pattern);
    final BindingDescr fieldBindingDescr = new BindingDescr("x", "price");
    pattern.addConstraint(fieldBindingDescr);
    final BindingDescr fieldBindingDescr2 = new BindingDescr("y", "price");
    pattern.addConstraint(fieldBindingDescr2);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    pattern.addConstraint(new ExprConstraintDescr(expression));
    ruleDescr.setConsequence("update(stilton);");
}

Example 27 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method createLiteralRule.

private void createLiteralRule(final BaseDescr descr) {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Primitives.class.getName());
    lhs.addDescr(pattern);
    pattern.addConstraint(descr);
    ruleDescr.setConsequence("");
    builder.addPackage(packageDescr);
    assertLength(0, builder.getErrors().getErrors());
}

Example 28 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testReturnValue.

@Test
public void testReturnValue() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Cheese.class.getName(), "stilton");
    lhs.addDescr(pattern);
    BindingDescr fieldBindingDescr = new BindingDescr("x", "price");
    pattern.addConstraint(fieldBindingDescr);
    fieldBindingDescr = new BindingDescr("y", "price");
    pattern.addConstraint(fieldBindingDescr);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    pattern.addConstraint(new ExprConstraintDescr("price == (( (Integer) map.get( new Integer( x )) ).intValue() * y)"));
    ruleDescr.setConsequence("update(stilton);");
    builder.addPackage(packageDescr);
    assertEquals("Should not have any errors", 0, builder.getErrors().getErrors().length);
}

Example 29 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class PatternBuilderForQueryTest method testRuleWithQuery.

@Test
public void testRuleWithQuery() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    QueryDescr queryDescr = new QueryDescr("query1");
    queryDescr.addParameter("String", "$name");
    queryDescr.addParameter("int", "$age");
    queryDescr.addParameter("String", "$likes");
    packageDescr.addRule(queryDescr);
    AndDescr lhs = new AndDescr();
    queryDescr.setLhs(lhs);
    PatternDescr pattern = new PatternDescr(Person.class.getName());
    lhs.addDescr(pattern);
    pattern.addConstraint(new BindingDescr("$name", "name", true));
    pattern.addConstraint(new BindingDescr("$age", "age", true));
    pattern.addConstraint(new BindingDescr("$likes", "likes", true));
    RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    pattern = new PatternDescr(Cheese.class.getName());
    lhs.addDescr(pattern);
    pattern.addConstraint(new BindingDescr("$type", "type"));
    pattern = new PatternDescr("query1");
    pattern.setQuery(true);
    lhs.addDescr(pattern);
    ExprConstraintDescr expr = new ExprConstraintDescr("'bobba'");
    expr.setPosition(0);
    expr.setType(Type.POSITIONAL);
    pattern.addConstraint(expr);
    expr = new ExprConstraintDescr("$age");
    expr.setPosition(1);
    expr.setType(Type.POSITIONAL);
    pattern.addConstraint(expr);
    expr = new ExprConstraintDescr("$type");
    expr.setPosition(2);
    expr.setType(Type.POSITIONAL);
    pattern.addConstraint(expr);
    ruleDescr.setConsequence("System.out.println(\"age: \" + $age);");
    builder.addPackage(packageDescr);
    assertLength(0, builder.getErrors().getErrors());
    InternalKnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addPackages(Arrays.asList(new KiePackage[] { builder.getPackage(packageDescr.getName()) }));
    final KieSession session = kbase.newKieSession();
    session.insert(new Person("bobba", "stilton", 90));
    session.insert(new Person("bobba", "brie", 80));
    session.insert(new Person("bobba", "brie", 75));
    session.insert(new Person("darth", "brie", 100));
    session.insert(new Person("luke", "brie", 25));
    session.insert(new Cheese("brie", 25));
    session.fireAllRules();
}

Example 30 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class RuleParserTest method testCompatibleRestriction.

@Test
public void testCompatibleRestriction() throws Exception {
    String source = "package com.sample  rule test  when  Test( ( text == null || text2 matches \"\" ) )  then  end";
    PackageDescr pkg = (PackageDescr) parse("compilationUnit", source);
    assertEquals("com.sample", pkg.getName());
    RuleDescr rule = (RuleDescr) pkg.getRules().get(0);
    assertEquals("test", rule.getName());
    ExprConstraintDescr expr = (ExprConstraintDescr) ((PatternDescr) rule.getLhs().getDescrs().get(0)).getDescrs().get(0);
    assertEquals("( text == null || text2 matches \"\" )", expr.getText());
}