@Test
public void testMVELDebugSymbols() throws DroolsParserException {
MVELDebugHandler.setDebugMode(true);
try {
final DrlParser parser = new DrlParser(LanguageLevelOption.DRL5);
final PackageDescr pkgDescr =
parser.parse(new InputStreamReader(getClass().getResourceAsStream("mvel_rule.drl")));
// just checking there is no parsing errors
assertFalse(parser.getErrors().toString(), parser.hasErrors());
InternalKnowledgePackage pkg = new KnowledgePackageImpl("org.drools");
final RuleDescr ruleDescr = pkgDescr.getRules().get(0);
final RuleBuilder builder = new RuleBuilder();
final KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl(pkg);
final KnowledgeBuilderConfigurationImpl conf = pkgBuilder.getBuilderConfiguration();
DialectCompiletimeRegistry dialectRegistry =
pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
Dialect dialect = dialectRegistry.getDialect("mvel");
RuleBuildContext context =
new RuleBuildContext(pkgBuilder, ruleDescr, dialectRegistry, pkg, dialect);
builder.build(context);
assertTrue(context.getErrors().toString(), context.getErrors().isEmpty());
final RuleImpl rule = context.getRule();
MVELConsequence mvelCons = (MVELConsequence) rule.getConsequence();
mvelCons.compile(
(MVELDialectRuntimeData)
pkgBuilder
.getPackageRegistry(pkg.getName())
.getDialectRuntimeRegistry()
.getDialectData("mvel"));
String s = DebugTools.decompile(mvelCons.getCompExpr());
int fromIndex = 0;
int count = 0;
while ((fromIndex = s.indexOf("DEBUG_SYMBOL", fromIndex + 1)) > -1) {
count++;
}
assertEquals(4, count);
} finally {
MVELDebugHandler.setDebugMode(false);
}
}
@Test
public void testImperativeCodeError() throws Exception {
InternalKnowledgePackage pkg = new KnowledgePackageImpl("pkg1");
final RuleDescr ruleDescr = new RuleDescr("rule 1");
ruleDescr.setConsequence("if (cheese.price == 10) { cheese.price = 5; }");
Properties properties = new Properties();
properties.setProperty("drools.dialect.default", "mvel");
KnowledgeBuilderConfigurationImpl cfg1 = new KnowledgeBuilderConfigurationImpl(properties);
KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl(pkg, cfg1);
final KnowledgeBuilderConfigurationImpl conf = pkgBuilder.getBuilderConfiguration();
PackageRegistry pkgRegistry = pkgBuilder.getPackageRegistry(pkg.getName());
DialectCompiletimeRegistry dialectRegistry =
pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect(pkgRegistry.getDialect());
final InstrumentedBuildContent context =
new InstrumentedBuildContent(pkgBuilder, ruleDescr, dialectRegistry, pkg, mvelDialect);
final InstrumentedDeclarationScopeResolver declarationResolver =
new InstrumentedDeclarationScopeResolver();
final ObjectType cheeseObjeectType = new ClassObjectType(Cheese.class);
final Pattern pattern = new Pattern(0, cheeseObjeectType);
final PatternExtractor extractor = new PatternExtractor(cheeseObjeectType);
final Declaration declaration = new Declaration("cheese", extractor, pattern);
final Map<String, Declaration> map = new HashMap<String, Declaration>();
map.put("cheese", declaration);
declarationResolver.setDeclarations(map);
context.setDeclarationResolver(declarationResolver);
final MVELConsequenceBuilder builder = new MVELConsequenceBuilder();
builder.build(context, RuleImpl.DEFAULT_CONSEQUENCE_NAME);
InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase();
StatefulKnowledgeSessionImpl ksession =
(StatefulKnowledgeSessionImpl) kBase.newStatefulKnowledgeSession();
final Cheese cheddar = new Cheese("cheddar", 10);
final InternalFactHandle f0 = (InternalFactHandle) ksession.insert(cheddar);
final LeftTupleImpl tuple = new LeftTupleImpl(f0, null, true);
final AgendaItem item = new AgendaItemImpl(0, tuple, 10, null, null, null);
final DefaultKnowledgeHelper kbHelper = new DefaultKnowledgeHelper(ksession);
kbHelper.setActivation(item);
try {
((MVELConsequence) context.getRule().getConsequence())
.compile(
(MVELDialectRuntimeData)
pkgBuilder
.getPackageRegistry(pkg.getName())
.getDialectRuntimeRegistry()
.getDialectData("mvel"));
context.getRule().getConsequence().evaluate(kbHelper, ksession);
fail("should throw an exception, as 'if' is not allowed");
} catch (Exception e) {
}
assertEquals(10, cheddar.getPrice());
}