Examples with ExistsDescr org.drools.compiler.lang.descr.ExistsDescr used on opensource projects

Example 1 with ExistsDescr

use of org.drools.compiler.lang.descr.ExistsDescr in project drools by kiegroup.

the class RuleParserTest method testNotExistWithBrackets.

@Test
public void testNotExistWithBrackets() throws Exception {
    final PackageDescr pkg = (PackageDescr) parseResource("compilationUnit", "not_exist_with_brackets.drl");
    assertFalse(parser.getErrors().toString(), parser.hasErrors());
    final RuleDescr rule = (RuleDescr) pkg.getRules().get(0);
    assertNotNull(rule);
    assertEquals("simple_rule", rule.getName());
    final AndDescr lhs = rule.getLhs();
    assertEquals(2, lhs.getDescrs().size());
    final NotDescr not = (NotDescr) lhs.getDescrs().get(0);
    assertEquals(1, not.getDescrs().size());
    final PatternDescr pattern = (PatternDescr) not.getDescrs().get(0);
    assertEquals("Cheese", pattern.getObjectType());
    final ExistsDescr ex = (ExistsDescr) lhs.getDescrs().get(1);
    assertEquals(1, ex.getDescrs().size());
    final PatternDescr exPattern = (PatternDescr) ex.getDescrs().get(0);
    assertEquals("Foo", exPattern.getObjectType());
}

Example 2 with ExistsDescr

use of org.drools.compiler.lang.descr.ExistsDescr in project drools by kiegroup.

the class CEDescrBuilderImpl method exists.

/**
 * {@inheritDoc}
 */
public CEDescrBuilder<CEDescrBuilder<P, T>, ExistsDescr> exists() {
    CEDescrBuilder<CEDescrBuilder<P, T>, ExistsDescr> exists = new CEDescrBuilderImpl<CEDescrBuilder<P, T>, ExistsDescr>(this, new ExistsDescr());
    ((ConditionalElementDescr) descr).addDescr(exists.getDescr());
    return exists;
}

Example 3 with ExistsDescr

use of org.drools.compiler.lang.descr.ExistsDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testExists.

@Test
public void testExists() throws Exception {
    KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    // Make sure we can't accessa  variable bound inside the not node
    RuleImpl rule = createRule(new ExistsDescr(), builder, "update(stilton);");
    assertTrue(builder.hasErrors());
    builder = new KnowledgeBuilderImpl();
    rule = createRule(new ExistsDescr(), builder, "");
    assertEquals(0, builder.getErrors().getErrors().length);
    final GroupElement lhs = rule.getLhs();
    assertLength(1, lhs.getChildren());
    final GroupElement exists = (GroupElement) lhs.getChildren().get(0);
    assertLength(1, exists.getChildren());
    final Pattern pattern = (Pattern) exists.getChildren().get(0);
}

Example 4 with ExistsDescr

use of org.drools.compiler.lang.descr.ExistsDescr in project drools by kiegroup.

the class XmlPackageReaderTest method testParseExists.

@Test
public void testParseExists() throws Exception {
    final XmlPackageReader xmlPackageReader = getXmReader();
    xmlPackageReader.read(new InputStreamReader(getClass().getResourceAsStream("test_ParseExists.xml")));
    final PackageDescr packageDescr = xmlPackageReader.getPackageDescr();
    assertNotNull(packageDescr);
    RuleDescr obj = (RuleDescr) packageDescr.getRules().get(0);
    Object existdescr = obj.getLhs().getDescrs().get(0);
    assertTrue(existdescr instanceof ExistsDescr);
    Object patternDescriptor = ((ExistsDescr) existdescr).getDescrs().get(0);
    assertTrue(patternDescriptor instanceof PatternDescr);
    assertEquals(((PatternDescr) patternDescriptor).getObjectType(), "Person");
    Object notDescr = obj.getLhs().getDescrs().get(1);
    assertEquals(notDescr.getClass().getName(), NotDescr.class.getName());
    existdescr = ((NotDescr) notDescr).getDescrs().get(0);
    patternDescriptor = ((ExistsDescr) existdescr).getDescrs().get(0);
    assertTrue(patternDescriptor instanceof PatternDescr);
    assertEquals(((PatternDescr) patternDescriptor).getObjectType(), "Cheese");
}

Example 5 with ExistsDescr

use of org.drools.compiler.lang.descr.ExistsDescr in project drools by kiegroup.

the class RuleModelDRLPersistenceImpl method parseExistentialElementDescr.

private CompositeFactPattern parseExistentialElementDescr(final RuleModel m, final ConditionalElementDescr conditionalDescr, final boolean isJavaDialect, final Map<String, String> boundParams, final PackageDataModelOracle dmo) {
    CompositeFactPattern comp;
    if (conditionalDescr instanceof NotDescr) {
        comp = new CompositeFactPattern(CompositeFactPattern.COMPOSITE_TYPE_NOT);
    } else if (conditionalDescr instanceof OrDescr) {
        comp = new CompositeFactPattern(CompositeFactPattern.COMPOSITE_TYPE_OR);
    } else if (conditionalDescr instanceof ExistsDescr) {
        comp = new CompositeFactPattern(CompositeFactPattern.COMPOSITE_TYPE_EXISTS);
    } else {
        throw new IllegalArgumentException("Unknown conditional descr type: " + conditionalDescr);
    }
    addPatternToComposite(m, conditionalDescr, comp, isJavaDialect, boundParams, dmo);
    IFactPattern[] patterns = comp.getPatterns();
    return patterns != null && patterns.length > 0 ? comp : null;
}