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

Example 16 with PatternDescr

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

the class RuleParserTest method testOrWithBinding.

/**
 * test basic foo : Fact() || Fact() stuff
 */
@Test
public void testOrWithBinding() throws Exception {
    final PackageDescr pkg = (PackageDescr) parseResource("compilationUnit", "or_binding.drl");
    assertEquals(1, pkg.getRules().size());
    final RuleDescr rule = (RuleDescr) pkg.getRules().get(0);
    assertEquals(2, rule.getLhs().getDescrs().size());
    final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get(0);
    assertEquals(2, or.getDescrs().size());
    final PatternDescr leftPattern = (PatternDescr) or.getDescrs().get(0);
    assertEquals("Person", leftPattern.getObjectType());
    assertEquals("foo", leftPattern.getIdentifier());
    final PatternDescr rightPattern = (PatternDescr) or.getDescrs().get(1);
    assertEquals("Person", rightPattern.getObjectType());
    assertEquals("foo", rightPattern.getIdentifier());
    final PatternDescr cheeseDescr = (PatternDescr) rule.getLhs().getDescrs().get(1);
    assertEquals("Cheese", cheeseDescr.getObjectType());
    assertEquals(null, cheeseDescr.getIdentifier());
    assertEqualsIgnoreWhitespace("System.out.println( \"Mark and Michael\" + bar );", (String) rule.getConsequence());
}

Example 17 with PatternDescr

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

the class RuleParserTest method testWithPredicate.

@Test
public void testWithPredicate() throws Exception {
    final PackageDescr pkg = (PackageDescr) parseResource("compilationUnit", "with_predicate.drl");
    assertEquals(1, pkg.getRules().size());
    final RuleDescr rule = (RuleDescr) pkg.getRules().get(0);
    assertEquals(1, rule.getLhs().getDescrs().size());
    final PatternDescr col = (PatternDescr) rule.getLhs().getDescrs().get(0);
    AndDescr and = (AndDescr) col.getConstraint();
    assertEquals(2, and.getDescrs().size());
    final ExprConstraintDescr field = (ExprConstraintDescr) col.getDescrs().get(0);
    final ExprConstraintDescr pred = (ExprConstraintDescr) and.getDescrs().get(1);
    assertEquals("$age2:age", field.getExpression());
    assertEqualsIgnoreWhitespace("$age2 == $age1+2", pred.getExpression());
}

Example 18 with PatternDescr

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

the class RuleParserTest method testBindingComposite.

@Test
public void testBindingComposite() throws Exception {
    final String text = "rule X when Person( $name : name == \"Bob\" || $loc : location == \"Montreal\" ) then end";
    PatternDescr pattern = (PatternDescr) ((RuleDescr) parse("rule", text)).getLhs().getDescrs().get(0);
    assertEquals("Person", pattern.getObjectType());
    assertFalse(pattern.isUnification());
    // assertEquals( 2,
    // pattern.getDescrs().size() );
    // BindingDescr bindingDescr = pattern.getDescrs().get( 0 );
    // assertEquals( "$name",
    // bindingDescr.getVariable() );
    // assertEquals( "name",
    // bindingDescr.getExpression() );
    // assertFalse( bindingDescr.isUnification() );
    // 
    // bindingDescr = pattern.getDescrs().get( 1 );
    // assertEquals( "$loc",
    // bindingDescr.getVariable() );
    // assertEquals( "location",
    // bindingDescr.getExpression() );
    // assertFalse( bindingDescr.isUnification() );
    // embedded bindings are extracted at compile time
    List<?> constraints = pattern.getDescrs();
    assertEquals(1, constraints.size());
    assertEquals("$name : name == \"Bob\" || $loc : location == \"Montreal\"", ((ExprConstraintDescr) constraints.get(0)).getExpression());
}

Example 19 with PatternDescr

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

the class KnowledgeBuilderTest method createRule.

private RuleImpl createRule(final ConditionalElementDescr ceDescr, final KnowledgeBuilderImpl builder, final String consequence) throws Exception {
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    lhs.addDescr((BaseDescr) ceDescr);
    final PatternDescr patternDescr = new PatternDescr(Cheese.class.getName(), "stilton");
    patternDescr.addConstraint(new ExprConstraintDescr("type == \"stilton\" "));
    ceDescr.addDescr(patternDescr);
    ruleDescr.setConsequence(consequence);
    builder.addPackage(packageDescr);
    InternalKnowledgePackage pkg = builder.getPackage(packageDescr.getName());
    final RuleImpl rule = pkg.getRule("rule-1");
    assertEquals("rule-1", rule.getName());
    return rule;
}

Example 20 with PatternDescr

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

the class KnowledgeBuilderTest method testNull.

@Test
public void testNull() {
    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 patternDescr = new PatternDescr(Cheese.class.getName(), "stilton");
    final FieldConstraintDescr literalDescr = new FieldConstraintDescr("type");
    literalDescr.addRestriction(new LiteralRestrictionDescr("==", null));
    patternDescr.addConstraint(literalDescr);
    ruleDescr.setConsequence("");
    builder.addPackage(packageDescr);
    InternalKnowledgePackage pkg = builder.getPackage(packageDescr.getName());
    final RuleImpl rule = pkg.getRule("rule-1");
    assertLength(0, builder.getErrors().getErrors());
}