Examples with MVELDialectRuntimeData org.drools.core.rule.MVELDialectRuntimeData used on opensource projects

Example 31 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project drools by kiegroup.

the class MVELObjectExpression method getValue.

public Object getValue(final Tuple leftTuple, final Declaration[] declrs, final Rule rule, final InternalWorkingMemory wm) {
    VariableResolverFactory factory = unit.getFactory(null, declrs, rule, null, leftTuple, null, wm, wm.getGlobalResolver());
    // do we have any functions for this namespace?
    InternalKnowledgePackage pkg = wm.getKnowledgeBase().getPackage("MAIN");
    if (pkg != null) {
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkg.getDialectRuntimeRegistry().getDialectData(this.id);
        factory.setNextFactory(data.getFunctionFactory());
    }
    return MVELSafeHelper.getEvaluator().executeExpression(this.expr, factory);
}

Example 32 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project drools by kiegroup.

the class MVELSalienceExpression method getValue.

public int getValue(final KnowledgeHelper khelper, final Rule rule, final WorkingMemory workingMemory) {
    VariableResolverFactory factory = unit.getFactory(khelper, khelper != null ? ((AgendaItem) khelper.getMatch()).getTerminalNode().getSalienceDeclarations() : null, rule, null, khelper != null ? (LeftTuple) khelper.getMatch().getTuple() : null, null, (InternalWorkingMemory) workingMemory, workingMemory.getGlobalResolver());
    // do we have any functions for this namespace?
    InternalKnowledgePackage pkg = workingMemory.getKnowledgeBase().getPackage("MAIN");
    if (pkg != null) {
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkg.getDialectRuntimeRegistry().getDialectData(this.id);
        factory.setNextFactory(data.getFunctionFactory());
    }
    Object value = MVEL.executeExpression(this.expr, factory);
    if (value instanceof String) {
        value = TimeUtils.parseTimeString((String) value);
    }
    return ((Number) value).intValue();
}

Example 33 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project drools by kiegroup.

the class MVELReturnValueExpression method evaluate.

public FieldValue evaluate(final InternalFactHandle handle, final Tuple tuple, final Declaration[] previousDeclarations, final Declaration[] requiredDeclarations, final WorkingMemory workingMemory, final Object ctx) throws Exception {
    VariableResolverFactory factory = (VariableResolverFactory) ctx;
    unit.updateFactory(handle, tuple, null, (InternalWorkingMemory) workingMemory, workingMemory.getGlobalResolver(), factory);
    // do we have any functions for this namespace?
    InternalKnowledgePackage pkg = workingMemory.getKnowledgeBase().getPackage("MAIN");
    if (pkg != null) {
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkg.getDialectRuntimeRegistry().getDialectData(this.id);
        factory.setNextFactory(data.getFunctionFactory());
    }
    return workingMemory.getKnowledgeBase().getConfiguration().getComponentFactory().getFieldFactory().getFieldValue(MVELSafeHelper.getEvaluator().executeExpression(this.expr, handle, factory));
}

Example 34 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project jbpm by kiegroup.

the class MVELReturnValueEvaluator method evaluate.

public Object evaluate(ProcessContext context) throws Exception {
    int length = unit.getOtherIdentifiers().length;
    Object[] vars = new Object[length];
    if (unit.getOtherIdentifiers() != null) {
        for (int i = 0; i < length; i++) {
            vars[i] = context.getVariable(unit.getOtherIdentifiers()[i]);
        }
    }
    InternalWorkingMemory internalWorkingMemory = null;
    if (context.getKieRuntime() instanceof StatefulKnowledgeSessionImpl) {
        internalWorkingMemory = ((StatefulKnowledgeSessionImpl) context.getKieRuntime()).getInternalWorkingMemory();
    } else if (context.getKieRuntime() instanceof StatelessKnowledgeSession) {
        StatefulKnowledgeSession statefulKnowledgeSession = ((StatelessKnowledgeSessionImpl) context.getKieRuntime()).newWorkingMemory();
        internalWorkingMemory = ((StatefulKnowledgeSessionImpl) statefulKnowledgeSession).getInternalWorkingMemory();
    }
    VariableResolverFactory factory = unit.getFactory(context, // No previous declarations
    null, // No rule
    null, // No "right object"
    null, // No (left) tuples
    null, vars, internalWorkingMemory, (GlobalResolver) context.getKieRuntime().getGlobals());
    // do we have any functions for this namespace?
    KiePackage pkg = context.getKieRuntime().getKieBase().getKiePackage("MAIN");
    if (pkg instanceof KnowledgePackageImpl) {
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) ((KnowledgePackageImpl) pkg).getDialectRuntimeRegistry().getDialectData(id);
        factory.setNextFactory(data.getFunctionFactory());
    }
    Object value = MVELSafeHelper.getEvaluator().executeExpression(this.expr, null, factory);
    if (!(value instanceof Boolean)) {
        throw new RuntimeException("Constraints must return boolean values: " + unit.getExpression() + " returns " + value + (value == null ? "" : " (type=" + value.getClass()));
    }
    return ((Boolean) value).booleanValue();
}

Example 35 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project jbpm by kiegroup.

the class MVELActionBuilderTest method testSimpleAction.

@Test
public void testSimpleAction() throws Exception {
    final InternalKnowledgePackage pkg = new KnowledgePackageImpl("pkg1");
    ActionDescr actionDescr = new ActionDescr();
    actionDescr.setText("list.add( 'hello world' )");
    KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl(pkg);
    DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
    MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect("mvel");
    PackageBuildContext context = new PackageBuildContext();
    context.init(pkgBuilder, pkg, null, dialectRegistry, mvelDialect, null);
    pkgBuilder.addPackageFromDrl(new StringReader("package pkg1;\nglobal java.util.List list;\n"));
    ActionNode actionNode = new ActionNode();
    DroolsAction action = new DroolsConsequenceAction("mvel", null);
    actionNode.setAction(action);
    final MVELActionBuilder builder = new MVELActionBuilder();
    builder.build(context, action, actionDescr, actionNode);
    final InternalKnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addPackages(Arrays.asList(pkgBuilder.getPackages()));
    final KieSession wm = kbase.newKieSession();
    List<String> list = new ArrayList<String>();
    wm.setGlobal("list", list);
    MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkgBuilder.getPackage("pkg1").getDialectRuntimeRegistry().getDialectData("mvel");
    ((MVELAction) actionNode.getAction().getMetaData("Action")).compile(data);
    ProcessContext processContext = new ProcessContext(((InternalWorkingMemory) wm).getKnowledgeRuntime());
    ((Action) actionNode.getAction().getMetaData("Action")).execute(processContext);
    assertEquals("hello world", list.get(0));
}