Examples with AgendaItem org.drools.core.common.AgendaItem used on opensource projects

Example 1 with AgendaItem

use of org.drools.core.common.AgendaItem in project drools by kiegroup.

the class RuleExecutor method fire.

private int fire(InternalWorkingMemory wm, InternalAgenda agenda, AgendaFilter filter, int fireCount, int fireLimit) {
    int localFireCount = 0;
    if (!tupleList.isEmpty()) {
        if (!fireExitedEarly && isDeclarativeAgendaEnabled()) {
            // Network Evaluation can notify meta rules, which should be given a chance to fire first
            RuleAgendaItem nextRule = agenda.peekNextRule();
            if (!isHigherSalience(nextRule)) {
                fireExitedEarly = true;
                return localFireCount;
            }
        }
        RuleTerminalNode rtn = (RuleTerminalNode) pmem.getPathEndNode();
        RuleImpl rule = rtn.getRule();
        Tuple tuple = getNextTuple();
        if (rule.isAllMatches()) {
            fireConsequenceEvent(wm, agenda, (AgendaItem) tuple, DefaultAgenda.ON_BEFORE_ALL_FIRES_CONSEQUENCE_NAME);
        }
        Tuple lastTuple = null;
        for (; tuple != null; lastTuple = tuple, tuple = getNextTuple()) {
            // if the current Rule is no-loop and the origin rule is the same then return
            if (cancelAndContinue(wm, rtn, rule, tuple, filter)) {
                continue;
            }
            AgendaItem item = (AgendaItem) tuple;
            if (agenda.getActivationsFilter() != null && !agenda.getActivationsFilter().accept(item, wm, rtn)) {
                // only relevant for seralization, to not refire Matches already fired
                continue;
            }
            fireActivation(wm, agenda, item);
            localFireCount++;
            if (rtn.getLeftTupleSource() == null) {
                // The activation firing removed this rule from the rule base
                break;
            }
            agenda.flushPropagations();
            // dyanmic salience may have updated it, so get again.
            int salience = ruleAgendaItem.getSalience();
            if (queue != null && !queue.isEmpty() && salience != queue.peek().getSalience()) {
                ruleAgendaItem.dequeue();
                ruleAgendaItem.setSalience(queue.peek().getSalience());
                ruleAgendaItem.getAgendaGroup().add(ruleAgendaItem);
            }
            if (!rule.isAllMatches()) {
                // if firing rule is @All don't give way to other rules
                if (haltRuleFiring(fireCount, fireLimit, localFireCount, agenda)) {
                    // another rule has high priority and is on the agenda, so evaluate it first
                    break;
                }
                if (!wm.isSequential()) {
                    reEvaluateNetwork(agenda);
                }
            }
        }
        if (rule.isAllMatches()) {
            fireConsequenceEvent(wm, agenda, (AgendaItem) lastTuple, DefaultAgenda.ON_AFTER_ALL_FIRES_CONSEQUENCE_NAME);
        }
    }
    removeRuleAgendaItemWhenEmpty(wm);
    fireExitedEarly = false;
    return localFireCount;
}

Example 2 with AgendaItem

use of org.drools.core.common.AgendaItem in project drools by kiegroup.

the class ProtobufOutputMarshaller method writeAgenda.

private static void writeAgenda(MarshallerWriteContext context, ProtobufMessages.RuleData.Builder _ksb) throws IOException {
    InternalWorkingMemory wm = context.wm;
    InternalAgenda agenda = wm.getAgenda();
    org.drools.core.marshalling.impl.ProtobufMessages.Agenda.Builder _ab = ProtobufMessages.Agenda.newBuilder();
    AgendaGroup[] agendaGroups = agenda.getAgendaGroupsMap().values().toArray(new AgendaGroup[agenda.getAgendaGroupsMap().size()]);
    Arrays.sort(agendaGroups, AgendaGroupSorter.instance);
    for (AgendaGroup ag : agendaGroups) {
        AgendaGroupQueueImpl group = (AgendaGroupQueueImpl) ag;
        org.drools.core.marshalling.impl.ProtobufMessages.Agenda.AgendaGroup.Builder _agb = ProtobufMessages.Agenda.AgendaGroup.newBuilder();
        _agb.setName(group.getName()).setIsActive(group.isActive()).setIsAutoDeactivate(group.isAutoDeactivate()).setClearedForRecency(group.getClearedForRecency()).setHasRuleFlowLister(group.isRuleFlowListener()).setActivatedForRecency(group.getActivatedForRecency());
        Map<Long, String> nodeInstances = group.getNodeInstances();
        for (Map.Entry<Long, String> entry : nodeInstances.entrySet()) {
            org.drools.core.marshalling.impl.ProtobufMessages.Agenda.AgendaGroup.NodeInstance.Builder _nib = ProtobufMessages.Agenda.AgendaGroup.NodeInstance.newBuilder();
            _nib.setProcessInstanceId(entry.getKey());
            _nib.setNodeInstanceId(entry.getValue());
            _agb.addNodeInstance(_nib.build());
        }
        _ab.addAgendaGroup(_agb.build());
    }
    org.drools.core.marshalling.impl.ProtobufMessages.Agenda.FocusStack.Builder _fsb = ProtobufMessages.Agenda.FocusStack.newBuilder();
    LinkedList<AgendaGroup> focusStack = agenda.getStackList();
    for (AgendaGroup group : focusStack) {
        _fsb.addGroupName(group.getName());
    }
    _ab.setFocusStack(_fsb.build());
    // serialize all dormant activations
    org.drools.core.util.Iterator it = ActivationIterator.iterator(wm);
    List<org.drools.core.spi.Activation> dormant = new ArrayList<org.drools.core.spi.Activation>();
    for (org.drools.core.spi.Activation item = (org.drools.core.spi.Activation) it.next(); item != null; item = (org.drools.core.spi.Activation) it.next()) {
        if (!item.isQueued()) {
            dormant.add(item);
        }
    }
    Collections.sort(dormant, ActivationsSorter.INSTANCE);
    for (org.drools.core.spi.Activation activation : dormant) {
        _ab.addMatch(writeActivation(context, (AgendaItem) activation));
    }
    // serialize all network evaluator activations
    for (Activation activation : agenda.getActivations()) {
        if (activation.isRuleAgendaItem()) {
            // serialize it
            _ab.addRuleActivation(writeActivation(context, (AgendaItem) activation));
        }
    }
    _ksb.setAgenda(_ab.build());
}

Example 3 with AgendaItem

use of org.drools.core.common.AgendaItem 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 = kBase.getConfiguration().getComponentFactory().getPropagationContextFactory();
    kBase.addPackage(pkg);
    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);
    f0.removeLeftTuple(tuple);
    final AgendaItem item = new AgendaItemImpl(0, tuple, 10, pctxFactory.createPropagationContext(1, PropagationContext.Type.DELETION, null, tuple != null ? (TerminalNode) tuple.getTupleSink() : null, null), new RuleTerminalNode(0, new CompositeObjectSinkAdapterTest.MockBetaNode(), context.getRule(), subrule, 0, new BuildContext(kBase)), 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());
}

Example 4 with AgendaItem

use of org.drools.core.common.AgendaItem in project drools by kiegroup.

the class MVELConsequenceBuilderTest method testImperativeCodeError.

@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);
    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());
}

Example 5 with AgendaItem

use of org.drools.core.common.AgendaItem in project drools by kiegroup.

the class MVELSalienceBuilderTest method testSimpleExpression.

@Test
public void testSimpleExpression() {
    StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
    final Person p = new Person("mark", "", 31);
    final InternalFactHandle f0 = (InternalFactHandle) ksession.insert(p);
    final LeftTupleImpl tuple = new LeftTupleImpl(f0, null, true);
    RuleTerminalNode rtn = new RuleTerminalNode();
    rtn.setSalienceDeclarations(context.getDeclarationResolver().getDeclarations(context.getRule()).values().toArray(new Declaration[1]));
    AgendaItem item = new AgendaItemImpl(0, tuple, 0, null, rtn, null);
    assertEquals(25, context.getRule().getSalience().getValue(new DefaultKnowledgeHelper(item, ksession), context.getRule(), ksession));
}