use of org.drools.kiesession.consequence.DefaultKnowledgeHelper in project drools by kiegroup.
the class MVELConsequenceBuilderTest method testImperativeCodeError.
@Test
public void testImperativeCodeError() throws Exception {
InternalKnowledgePackage pkg = CoreComponentFactory.get().createKnowledgePackage("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);
PackageRegistry pkgRegistry = pkgBuilder.getPackageRegistry(pkg.getName());
DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect(pkgRegistry.getDialect());
final RuleBuildContext context = new RuleBuildContext(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 = KnowledgeBaseFactory.newKnowledgeBase();
StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
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());
}
use of org.drools.kiesession.consequence.DefaultKnowledgeHelper in project drools by kiegroup.
the class KnowledgeBuilderTest method testSerializable.
@Test
public void testSerializable() 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);
packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
ruleDescr.setConsequence("map.put(\"value\", new Integer(1) );");
// check that packageDescr is serializable
final PackageDescr back = (PackageDescr) SerializationHelper.serializeObject(packageDescr);
assertNotNull(back);
assertEquals("p1", back.getName());
builder.addPackage(packageDescr);
InternalKnowledgePackage pkg = builder.getPackage(packageDescr.getName());
final RuleImpl rule = pkg.getRule("rule-1");
assertLength(0, builder.getErrors().getErrors());
InternalKnowledgePackage newPkg = SerializationHelper.serializeObject(pkg);
final RuleImpl newRule = newPkg.getRule("rule-1");
InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
;
// It's been serialised so we have to simulate the re-wiring process
newPkg.getDialectRuntimeRegistry().onAdd(kBase.getRootClassLoader());
newPkg.getDialectRuntimeRegistry().onBeforeExecute();
kBase.getGlobals().put("map", Map.class);
final KieSession workingMemory = kBase.newKieSession();
final HashMap map = new HashMap();
workingMemory.setGlobal("map", map);
final LeftTupleImpl tuple = new MockTuple(new HashMap());
tuple.setLeftTupleSink(new RuleTerminalNode(1, new MockBetaNode(), newRule, newRule.getLhs(), 0, new BuildContext(kBase, Collections.emptyList())));
final Activation activation = new MockActivation(newRule, 0, newRule.getLhs(), tuple);
final DefaultKnowledgeHelper knowledgeHelper = new DefaultKnowledgeHelper(((StatefulKnowledgeSessionImpl) workingMemory));
knowledgeHelper.setActivation(activation);
newRule.getConsequence().evaluate(knowledgeHelper, ((StatefulKnowledgeSessionImpl) workingMemory));
assertEquals(new Integer(1), map.get("value"));
}
use of org.drools.kiesession.consequence.DefaultKnowledgeHelper in project drools by kiegroup.
the class MVELConsequenceBuilderTest method testSimpleExpression.
@Test
public void testSimpleExpression() throws Exception {
PackageDescr pkgDescr = new PackageDescr("pkg1");
KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl();
pkgBuilder.addPackage(pkgDescr);
InternalKnowledgePackage pkg = pkgBuilder.getPackageRegistry("pkg1").getPackage();
final RuleDescr ruleDescr = new RuleDescr("rule 1");
ruleDescr.setNamespace("pkg1");
ruleDescr.setConsequence("modify (cheese) {price = 5 };\nretract (cheese)");
DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect("mvel");
final RuleBuildContext context = new RuleBuildContext(pkgBuilder, ruleDescr, dialectRegistry, pkg, mvelDialect);
final InstrumentedDeclarationScopeResolver declarationResolver = new InstrumentedDeclarationScopeResolver();
final ObjectType cheeseObjeectType = new ClassObjectType(Cheese.class);
final Pattern pattern = new Pattern(0, cheeseObjeectType, "cheese");
final GroupElement subrule = new GroupElement(GroupElement.AND);
subrule.addChild(pattern);
final Map<String, Declaration> map = new HashMap<String, Declaration>();
map.put("cheese", pattern.getDeclaration());
declarationResolver.setDeclarations(map);
context.setDeclarationResolver(declarationResolver);
final MVELConsequenceBuilder builder = new MVELConsequenceBuilder();
builder.build(context, RuleImpl.DEFAULT_CONSEQUENCE_NAME);
InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
PropagationContextFactory pctxFactory = RuntimeComponentFactory.get().getPropagationContextFactory();
kBase.addPackage(pkg);
StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
BuildContext buildContext = new BuildContext(kBase, Collections.emptyList());
MockTupleSource source = new MockTupleSource(1, buildContext);
source.setObjectCount(1);
RuleTerminalNode rtn = new RuleTerminalNode(0, source, context.getRule(), subrule, 0, buildContext);
final Cheese cheddar = new Cheese("cheddar", 10);
final InternalFactHandle f0 = (InternalFactHandle) ksession.insert(cheddar);
final LeftTupleImpl tuple = new LeftTupleImpl(f0, rtn, true);
f0.removeLeftTuple(tuple);
final AgendaItem item = new AgendaItemImpl(0, tuple, 10, pctxFactory.createPropagationContext(1, PropagationContext.Type.DELETION, null, null, null), rtn, null);
final DefaultKnowledgeHelper kbHelper = new DefaultKnowledgeHelper(ksession);
kbHelper.setActivation(item);
((MVELConsequence) context.getRule().getConsequence()).compile((MVELDialectRuntimeData) pkgBuilder.getPackageRegistry(pkg.getName()).getDialectRuntimeRegistry().getDialectData("mvel"));
context.getRule().getConsequence().evaluate(kbHelper, ksession);
assertEquals(5, cheddar.getPrice());
}
use of org.drools.kiesession.consequence.DefaultKnowledgeHelper in project drools by kiegroup.
the class KnowledgeBuilderTest method testReload.
@Test
public void testReload() 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);
packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
ruleDescr.setConsequence("map.put(\"value\", new Integer(1) );");
builder.addPackage(packageDescr);
InternalKnowledgePackage pkg = builder.getPackage(packageDescr.getName());
RuleImpl rule = pkg.getRule("rule-1");
assertLength(0, builder.getErrors().getErrors());
InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
kBase.addGlobal("map", Map.class);
final KieSession workingMemory = kBase.newKieSession();
final HashMap map = new HashMap();
workingMemory.setGlobal("map", map);
final LeftTupleImpl tuple = new MockTuple(new HashMap());
tuple.setLeftTupleSink(new RuleTerminalNode(1, new MockBetaNode(), rule, rule.getLhs(), 0, new BuildContext(kBase, Collections.emptyList())));
final Activation activation = new MockActivation(rule, 0, rule.getLhs(), tuple);
DefaultKnowledgeHelper knowledgeHelper = new DefaultKnowledgeHelper(((StatefulKnowledgeSessionImpl) workingMemory));
knowledgeHelper.setActivation(activation);
rule.getConsequence().evaluate(knowledgeHelper, ((StatefulKnowledgeSessionImpl) workingMemory));
assertEquals(new Integer(1), map.get("value"));
ruleDescr.setConsequence("map.put(\"value\", new Integer(2) );");
pkg.removeRule(rule);
// Make sure the compiled classes are also removed
assertEquals(0, ((JavaDialectRuntimeData) pkg.getDialectRuntimeRegistry().getDialectData("java")).getStore().size());
builder.addPackage(packageDescr);
pkg = builder.getPackage(packageDescr.getName());
rule = pkg.getRule("rule-1");
knowledgeHelper = new DefaultKnowledgeHelper(((StatefulKnowledgeSessionImpl) workingMemory));
knowledgeHelper.setActivation(activation);
rule.getConsequence().evaluate(knowledgeHelper, ((StatefulKnowledgeSessionImpl) workingMemory));
assertEquals(new Integer(2), map.get("value"));
}
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