Examples with VariableResolverFactory org.mvel2.integration.VariableResolverFactory used on opensource projects

Example 86 with VariableResolverFactory

use of org.mvel2.integration.VariableResolverFactory in project mvel by mikebrock.

the class PreFixDecNode method getReducedValueAccelerated.

public Object getReducedValueAccelerated(Object ctx, Object thisValue, VariableResolverFactory factory) {
    VariableResolver vResolver = factory.getVariableResolver(name);
    vResolver.setValue(ctx = MathProcessor.doOperations(vResolver.getValue(), Operator.SUB, DataTypes.INTEGER, 1));
    return ctx;
}

Example 87 with VariableResolverFactory

use of org.mvel2.integration.VariableResolverFactory in project mvel by mikebrock.

the class IndexedOperativeAssign method getReducedValueAccelerated.

public Object getReducedValueAccelerated(Object ctx, Object thisValue, VariableResolverFactory factory) {
    VariableResolver resolver = factory.getIndexedVariableResolver(register);
    resolver.setValue(ctx = MathProcessor.doOperations(resolver.getValue(), operation, statement.getValue(ctx, thisValue, factory)));
    return ctx;
}

Example 88 with VariableResolverFactory

use of org.mvel2.integration.VariableResolverFactory in project mvel by mikebrock.

the class IndexedPostFixIncNode method getReducedValueAccelerated.

public Object getReducedValueAccelerated(Object ctx, Object thisValue, VariableResolverFactory factory) {
    VariableResolver vResolver = factory.getIndexedVariableResolver(register);
    vResolver.setValue(MathProcessor.doOperations(ctx = vResolver.getValue(), Operator.ADD, DataTypes.INTEGER, 1));
    return ctx;
}

Example 89 with VariableResolverFactory

use of org.mvel2.integration.VariableResolverFactory in project mvel by mvel.

the class ASMAccessorOptimizer method addSubstatement.

private Object addSubstatement(ExecutableStatement stmt) {
    if (stmt instanceof ExecutableAccessor) {
        ExecutableAccessor ea = (ExecutableAccessor) stmt;
        if (ea.getNode().isIdentifier() && !ea.getNode().isDeepProperty()) {
            loadVariableByName(ea.getNode().getName());
            return null;
        }
    }
    compiledInputs.add(stmt);
    assert debug("ALOAD 0");
    mv.visitVarInsn(ALOAD, 0);
    assert debug("GETFIELD p" + (compiledInputs.size() - 1));
    mv.visitFieldInsn(GETFIELD, className, "p" + (compiledInputs.size() - 1), "L" + NAMESPACE + "compiler/ExecutableStatement;");
    assert debug("ALOAD 2");
    mv.visitVarInsn(ALOAD, 2);
    assert debug("ALOAD 3");
    mv.visitVarInsn(ALOAD, 3);
    assert debug("INVOKEINTERFACE ExecutableStatement.getValue");
    mv.visitMethodInsn(INVOKEINTERFACE, getInternalName(ExecutableStatement.class), "getValue", "(Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;)Ljava/lang/Object;");
    return null;
}

Example 90 with VariableResolverFactory

use of org.mvel2.integration.VariableResolverFactory in project drools by kiegroup.

the class MVELConsequence method evaluate.

@Override
public void evaluate(KnowledgeHelper knowledgeHelper, WorkingMemory workingMemory) throws Exception {
    // same as lambda consequence...
    Tuple tuple = knowledgeHelper.getTuple();
    Declaration[] declarations = ((RuleTerminalNode) knowledgeHelper.getMatch().getTuple().getTupleSink()).getRequiredDeclarations();
    Variable[] vars = consequence.getVariables();
    // ...but the facts are association of Variable and its value, preserving order.
    Map<Variable, Object> facts = new LinkedHashMap<>();
    int declrCounter = 0;
    for (Variable var : vars) {
        if (var.isFact()) {
            Declaration declaration = declarations[declrCounter++];
            InternalFactHandle fh = tuple.get(declaration);
            facts.put(var, declaration.getValue((InternalWorkingMemory) workingMemory, fh.getObject()));
        } else {
            facts.put(var, workingMemory.getGlobal(var.getName()));
        }
    }
    ScriptBlock scriptBlock = null;
    try {
        scriptBlock = (ScriptBlock) consequence.getBlock();
    } catch (ClassCastException e) {
        throw new RuntimeException("I tried to access a ScriptBlock but it was not. So something is thinking is a MVEL consequence but did not set the MVEL script textual representation", e);
    }
    String originalRHS = scriptBlock.getScript();
    String name = context.getRule().getPackageName() + "." + context.getRule().getName();
    String expression = MVELConsequenceBuilder.processMacros(originalRHS);
    String[] globalIdentifiers = new String[] {};
    String[] default_inputIdentifiers = new String[] { "this", "drools", "kcontext", "rule" };
    String[] inputIdentifiers = Stream.concat(Arrays.asList(default_inputIdentifiers).stream(), facts.entrySet().stream().map(kv -> kv.getKey().getName())).collect(Collectors.toList()).toArray(new String[] {});
    String[] default_inputTypes = new String[] { "org.drools.core.spi.KnowledgeHelper", "org.drools.core.spi.KnowledgeHelper", "org.drools.core.spi.KnowledgeHelper", "org.kie.api.definition.rule.Rule" };
    String[] inputTypes = Stream.concat(Arrays.asList(default_inputTypes).stream(), facts.entrySet().stream().map(kv -> kv.getKey().getType().getName())).collect(Collectors.toList()).toArray(new String[] {});
    // ^^ please notice about inputTypes, it is to use the Class.getName(), because is later used by the Classloader internally in MVEL to load the class,
    // do NOT replace with getCanonicalName() otherwise inner classes will not be loaded correctly.
    int languageLevel = 4;
    boolean strictMode = true;
    boolean readLocalsFromTuple = false;
    EvaluatorWrapper[] operators = new EvaluatorWrapper[] {};
    Declaration[] previousDeclarations = new Declaration[] {};
    Declaration[] localDeclarations = new Declaration[] {};
    String[] otherIdentifiers = new String[] {};
    MVELCompilationUnit cu = new MVELCompilationUnit(name, expression, globalIdentifiers, operators, previousDeclarations, localDeclarations, otherIdentifiers, inputIdentifiers, inputTypes, languageLevel, strictMode, readLocalsFromTuple);
    // TODO unfortunately the MVELDialectRuntimeData would be the one of compile time
    // the one from runtime is not helpful, in fact the dialect registry for runtime is empty:
    // MVELDialectRuntimeData runtimeData = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
    MVELDialectRuntimeData runtimeData = new MVELDialectRuntimeData();
    // this classloader will be used by the CompilationUnit to load the imports.
    runtimeData.onAdd(null, Thread.currentThread().getContextClassLoader());
    runtimeData.addPackageImport(context.getPkg().getName());
    runtimeData.addPackageImport("java.lang");
    // therefore we assume for the ScriptBlock all available KBPackages are the default available and imported for the scope of the Script itself.
    for (KiePackage kp : context.getKnowledgePackages()) {
        if (!kp.getName().equals(context.getPkg().getName())) {
            runtimeData.addPackageImport(kp.getName());
        }
    }
    // sometimes here it was passed as a 2nd argument a String?? similar to `rule R in file file.drl`
    Serializable cuResult = cu.getCompiledExpression(runtimeData);
    ExecutableStatement compiledExpression = (ExecutableStatement) cuResult;
    // TODO the part above up to the ExecutableStatement compiledExpression should be cached.
    Map<String, Object> mvelContext = new HashMap<>();
    mvelContext.put("this", knowledgeHelper);
    mvelContext.put("drools", knowledgeHelper);
    mvelContext.put("kcontext", knowledgeHelper);
    mvelContext.put("rule", knowledgeHelper.getRule());
    for (Entry<Variable, Object> kv : facts.entrySet()) {
        mvelContext.put(kv.getKey().getName(), kv.getValue());
    }
    CachingMapVariableResolverFactory cachingFactory = new CachingMapVariableResolverFactory(mvelContext);
    VariableResolverFactory factory = cu.getFactory(knowledgeHelper, ((AgendaItem) knowledgeHelper.getMatch()).getTerminalNode().getRequiredDeclarations(), knowledgeHelper.getRule(), knowledgeHelper.getTuple(), null, (InternalWorkingMemory) workingMemory, workingMemory.getGlobalResolver());
    cachingFactory.setNextFactory(factory);
    MVEL.executeExpression(compiledExpression, knowledgeHelper, cachingFactory);
}