Examples with And org.mvel2.ast.And used on opensource projects

Example 1 with And

use of org.mvel2.ast.And in project drools by kiegroup.

the class DefaultBeanClassBuilder method buildTraitMap.

/**
 * A traitable class is a special class with support for dynamic properties and types.
 *
 * This method builds the trait map, containing the references to the proxies
 * for each trait carried by an object at a given time.
 *
 * @param cw
 * @param classDef
 */
protected void buildTraitMap(ClassWriter cw, ClassDefinition classDef) {
    FieldVisitor fv = cw.visitField(ACC_PRIVATE, TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class), "Ljava/util/Map<Ljava/lang/String;Lorg/drools/core/factmodel/traits/Thing;>;", null);
    fv.visitEnd();
    MethodVisitor mv;
    mv = cw.visitMethod(ACC_PUBLIC, "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}), "()Ljava/util/Map<Ljava/lang/String;Lorg/drools/factmodel/traits/Thing;>;", null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "_setTraitMap", Type.getMethodDescriptor(Type.getType(void.class), new Type[] { Type.getType(Map.class) }), null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitFieldInsn(PUTFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "addTrait", Type.getMethodDescriptor(Type.getType(void.class), new Type[] { Type.getType(String.class), Type.getType(Thing.class) }), "(Ljava/lang/String;Lorg/drools/core/factmodel/traits/Thing;)V", null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 2);
    mv.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(Map.class), "put", Type.getMethodDescriptor(Type.getType(Object.class), new Type[] { Type.getType(Object.class), Type.getType(Object.class) }));
    mv.visitInsn(POP);
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "getTrait", Type.getMethodDescriptor(Type.getType(Thing.class), new Type[] { Type.getType(String.class) }), Type.getMethodDescriptor(Type.getType(Thing.class), new Type[] { Type.getType(String.class) }), null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(Map.class), "get", Type.getMethodDescriptor(Type.getType(Object.class), new Type[] { Type.getType(Object.class) }));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(Thing.class));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "hasTrait", Type.getMethodDescriptor(Type.getType(boolean.class), new Type[] { Type.getType(String.class) }), null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    Label l0 = new Label();
    mv.visitJumpInsn(IFNONNULL, l0);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitLabel(l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(Map.class), "containsKey", Type.getMethodDescriptor(Type.getType(boolean.class), new Type[] { Type.getType(Object.class) }));
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "hasTraits", Type.getMethodDescriptor(Type.getType(boolean.class), new Type[] {}), null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    Label l5 = new Label();
    mv.visitJumpInsn(IFNULL, l5);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    mv.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(Map.class), "isEmpty", Type.getMethodDescriptor(Type.BOOLEAN_TYPE, new Type[] {}));
    mv.visitJumpInsn(IFNE, l5);
    mv.visitInsn(ICONST_1);
    Label l4 = new Label();
    mv.visitJumpInsn(GOTO, l4);
    mv.visitLabel(l5);
    mv.visitInsn(ICONST_0);
    mv.visitLabel(l4);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "removeTrait", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(String.class) }), Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(String.class) }), null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(TraitTypeMap.class));
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(TraitTypeMap.class), "removeCascade", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(String.class) }));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "removeTrait", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(BitSet.class) }), Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(BitSet.class) }), null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(TraitTypeMap.class));
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(TraitTypeMap.class), "removeCascade", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(BitSet.class) }));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "getTraits", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] {}), "()Ljava/util/Collection<Ljava/lang/String;>;", null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, BuildUtils.getInternalType(classDef.getName()), "_getTraitMap", Type.getMethodDescriptor(Type.getType(Map.class), new Type[] {}));
    mv.visitMethodInsn(INVOKEINTERFACE, Type.getInternalName(Map.class), "keySet", Type.getMethodDescriptor(Type.getType(Set.class), new Type[] {}));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "_setBottomTypeCode", Type.getMethodDescriptor(Type.getType(void.class), new Type[] { Type.getType(BitSet.class) }), null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(TraitTypeMap.class));
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(TraitTypeMap.class), "setBottomCode", Type.getMethodDescriptor(Type.getType(void.class), new Type[] { Type.getType(BitSet.class) }));
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "getMostSpecificTraits", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] {}), "()Ljava/util/Collection<Lorg/drools/core/factmodel/traits/Thing;>;", null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    Label l99 = new Label();
    mv.visitJumpInsn(IFNULL, l99);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(TraitTypeMap.class));
    mv.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(TraitTypeMap.class), "getMostSpecificTraits", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] {}));
    mv.visitInsn(ARETURN);
    mv.visitLabel(l99);
    mv.visitMethodInsn(INVOKESTATIC, Type.getInternalName(Collections.class), "emptySet", Type.getMethodDescriptor(Type.getType(Set.class), new Type[] {}));
    mv.visitMethodInsn(INVOKESTATIC, Type.getInternalName(Collections.class), "unmodifiableCollection", Type.getMethodDescriptor(Type.getType(Collection.class), new Type[] { Type.getType(Collection.class) }));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "getCurrentTypeCode", Type.getMethodDescriptor(Type.getType(BitSet.class), new Type[] {}), null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    Label l3 = new Label();
    mv.visitJumpInsn(IFNONNULL, l3);
    mv.visitInsn(ACONST_NULL);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l3);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), TraitableBean.TRAITSET_FIELD_NAME, Type.getDescriptor(Map.class));
    mv.visitTypeInsn(CHECKCAST, Type.getInternalName(TraitTypeMap.class));
    mv.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(TraitTypeMap.class), "getCurrentTypeCode", Type.getMethodDescriptor(Type.getType(BitSet.class), new Type[] {}));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

Example 2 with And

use of org.mvel2.ast.And in project drools by kiegroup.

the class DialectUtil method setContainerBlockInputs.

/**
 * This code is not currently used, it's commented out in method caller. This is because we couldn't
 * get this to work and will have to wait until MVEL supports genercs (mdp).
 */
public static void setContainerBlockInputs(RuleBuildContext context, List<JavaBlockDescr> descrs, JavaContainerBlockDescr parentBlock, String originalCode, BoundIdentifiers bindings, Map<String, Class<?>> parentVars, int offset) {
    StringBuilder consequence = new StringBuilder();
    int lastAdded = 0;
    // strip blocks, so we can analyse this block with MVEL
    for (JavaBlockDescr block : parentBlock.getJavaBlockDescrs()) {
        if (block.getEnd() == 0) {
            // do nothing, it was incorrectly parsed, but this error should be picked up else where
            continue;
        }
        if (block.getType() == JavaBlockDescr.BlockType.TRY) {
            // adding previous chunk up to the start of this block
            consequence.append(originalCode.substring(lastAdded, block.getStart() - 1 - offset));
            JavaTryBlockDescr tryDescr = (JavaTryBlockDescr) block;
            if (tryDescr.getFinal() != null) {
                lastAdded = tryDescr.getFinal().getEnd() - offset;
            } else {
                lastAdded = tryDescr.getCatches().get(tryDescr.getCatches().size() - 1).getEnd() - offset;
            }
            stripTryDescr(originalCode, consequence, (JavaTryBlockDescr) block, offset);
        } else if (block.getType() == JavaBlockDescr.BlockType.THROW) {
            // adding previous chunk up to the start of this block
            consequence.append(originalCode.substring(lastAdded, block.getStart() - 1 - offset));
            JavaThrowBlockDescr throwBlock = (JavaThrowBlockDescr) block;
            addWhiteSpaces(originalCode, consequence, throwBlock.getStart() - offset, throwBlock.getTextStart() - offset);
            consequence.append(originalCode.substring(throwBlock.getTextStart() - offset - 1, throwBlock.getEnd() - 1 - offset)).append(";");
            lastAdded = throwBlock.getEnd() - offset;
        } else if (block.getType() == JavaBlockDescr.BlockType.IF) {
            // adding previous chunk up to the start of this block
            consequence.append(originalCode.substring(lastAdded, block.getStart() - 1 - offset));
            JavaIfBlockDescr ifDescr = (JavaIfBlockDescr) block;
            lastAdded = ifDescr.getEnd() - offset;
            stripBlockDescr(originalCode, consequence, ifDescr, offset);
        } else if (block.getType() == JavaBlockDescr.BlockType.ELSE) {
            // adding previous chunk up to the start of this block
            consequence.append(originalCode.substring(lastAdded, block.getStart() - 1 - offset));
            JavaElseBlockDescr elseDescr = (JavaElseBlockDescr) block;
            lastAdded = elseDescr.getEnd() - offset;
            stripBlockDescr(originalCode, consequence, elseDescr, offset);
        } else if (block.getType() == JavaBlockDescr.BlockType.WHILE) {
            // adding previous chunk up to the start of this block
            consequence.append(originalCode.substring(lastAdded, block.getStart() - 1 - offset));
            JavaWhileBlockDescr whileDescr = (JavaWhileBlockDescr) block;
            lastAdded = whileDescr.getEnd() - offset;
            stripBlockDescr(originalCode, consequence, whileDescr, offset);
        } else if (block.getType() == JavaBlockDescr.BlockType.FOR) {
            // adding previous chunk up to the start of this block
            consequence.append(originalCode.substring(lastAdded, block.getStart() - 1 - offset));
            JavaForBlockDescr forDescr = (JavaForBlockDescr) block;
            lastAdded = forDescr.getEnd() - offset;
            stripBlockDescr(originalCode, consequence, forDescr, offset);
        }
    }
    consequence.append(originalCode.substring(lastAdded));
    // We need to do this as MVEL doesn't recognise "modify"
    MacroProcessor macroProcessor = new MacroProcessor();
    Map<String, Macro> macros = new HashMap<String, Macro>(MVELConsequenceBuilder.macros);
    macros.put("modify", new Macro() {

        public String doMacro() {
            return "with  ";
        }
    });
    macroProcessor.setMacros(macros);
    String mvelCode = macroProcessor.parse(consequence.toString());
    Map<String, Class<?>> inputs = getInputs(context, mvelCode, bindings, parentVars);
    inputs.putAll(parentVars);
    parentBlock.setInputs(inputs);
    // set inputs for current container blocks to be rewritten
    for (JavaBlockDescr block : parentBlock.getJavaBlockDescrs()) {
        if (block.getType() == JavaBlockDescr.BlockType.TRY) {
            JavaTryBlockDescr tryBlock = (JavaTryBlockDescr) block;
            setContainerBlockInputs(context, descrs, tryBlock, originalCode.substring(tryBlock.getTextStart() - offset, tryBlock.getEnd() - 1 - offset), bindings, inputs, tryBlock.getTextStart());
            for (JavaCatchBlockDescr catchBlock : tryBlock.getCatches()) {
                setContainerBlockInputs(context, descrs, catchBlock, catchBlock.getClause() + "=null;" + originalCode.substring(catchBlock.getTextStart() - offset, catchBlock.getEnd() - 1 - offset), bindings, inputs, tryBlock.getTextStart());
            }
            if (tryBlock.getFinal() != null) {
                JavaFinalBlockDescr finalBlock = tryBlock.getFinal();
                setContainerBlockInputs(context, descrs, finalBlock, originalCode.substring(finalBlock.getTextStart() - offset, finalBlock.getEnd() - 1 - offset), bindings, inputs, tryBlock.getTextStart());
            }
        } else if (block.getType() == JavaBlockDescr.BlockType.IF) {
            JavaIfBlockDescr ifBlock = (JavaIfBlockDescr) block;
            int adjustBlock = (originalCode.charAt(ifBlock.getTextStart() - offset - 1) == '{') ? 0 : 1;
            setContainerBlockInputs(context, descrs, ifBlock, originalCode.substring(ifBlock.getTextStart() - offset + adjustBlock, ifBlock.getEnd() - 1 - offset - adjustBlock), bindings, inputs, ifBlock.getTextStart());
        } else if (block.getType() == JavaBlockDescr.BlockType.ELSE) {
            JavaElseBlockDescr elseBlock = (JavaElseBlockDescr) block;
            int adjustBlock = (originalCode.charAt(elseBlock.getTextStart() - offset - 1) == '{') ? 0 : 1;
            setContainerBlockInputs(context, descrs, elseBlock, originalCode.substring(elseBlock.getTextStart() - offset + adjustBlock, elseBlock.getEnd() - 1 - offset - adjustBlock), bindings, inputs, elseBlock.getTextStart());
        } else if (block.getType() == JavaBlockDescr.BlockType.WHILE) {
            JavaWhileBlockDescr whileBlock = (JavaWhileBlockDescr) block;
            int adjustBlock = (originalCode.charAt(whileBlock.getTextStart() - offset - 1) == '{') ? 0 : 1;
            setContainerBlockInputs(context, descrs, whileBlock, originalCode.substring(whileBlock.getTextStart() - offset + adjustBlock, whileBlock.getEnd() - 1 - offset - adjustBlock), bindings, inputs, whileBlock.getTextStart());
        } else if (block.getType() == JavaBlockDescr.BlockType.FOR) {
            JavaForBlockDescr forBlock = (JavaForBlockDescr) block;
            int adjustBlock = (originalCode.charAt(forBlock.getTextStart() - offset - 1) == '{') ? 0 : 1;
            setContainerBlockInputs(context, descrs, forBlock, originalCode.substring(forBlock.getStartParen() - offset, forBlock.getInitEnd() - offset) + originalCode.substring(forBlock.getTextStart() - offset + adjustBlock, forBlock.getEnd() - 1 - offset - adjustBlock), bindings, inputs, forBlock.getTextStart() - (forBlock.getInitEnd() - forBlock.getStartParen()));
        } else {
            // each block to be rewritten now knows it's own variables
            block.setInputs(inputs);
            descrs.add(block);
        }
    }
}

Example 3 with And

use of org.mvel2.ast.And in project drools by kiegroup.

the class PatternBuilder method buildPattern.

private Pattern buildPattern(RuleBuildContext context, PatternDescr patternDescr, ObjectType objectType) {
    String patternIdentifier = patternDescr.getIdentifier();
    boolean duplicateBindings = patternIdentifier != null && objectType instanceof ClassObjectType && context.getDeclarationResolver().isDuplicated(context.getRule(), patternIdentifier, objectType.getClassName());
    Pattern pattern;
    if (!StringUtils.isEmpty(patternIdentifier) && !duplicateBindings) {
        pattern = new Pattern(context.getNextPatternId(), // offset is 0 by default
        0, objectType, patternIdentifier, patternDescr.isInternalFact(context));
        if (objectType instanceof ClassObjectType) {
            // make sure PatternExtractor is wired up to correct ClassObjectType and set as a target for rewiring
            context.getPkg().getClassFieldAccessorStore().wireObjectType(objectType, (AcceptsClassObjectType) pattern.getDeclaration().getExtractor());
        }
    } else {
        pattern = new Pattern(context.getNextPatternId(), // offset is 0 by default
        0, objectType, null);
    }
    pattern.setPassive(patternDescr.isPassive(context));
    if (ClassObjectType.Match_ObjectType.isAssignableFrom(pattern.getObjectType())) {
        PropertyHandler handler = PropertyHandlerFactory.getPropertyHandler(RuleTerminalNodeLeftTuple.class);
        if (handler == null) {
            PropertyHandlerFactoryFixer.getPropertyHandlerClass().put(RuleTerminalNodeLeftTuple.class, new ActivationPropertyHandler());
        }
    }
    // adding the newly created pattern to the build stack this is necessary in case of local declaration usage
    context.getDeclarationResolver().pushOnBuildStack(pattern);
    if (duplicateBindings) {
        processDuplicateBindings(patternDescr.isUnification(), patternDescr, pattern, patternDescr, "this", patternDescr.getIdentifier(), context);
    }
    return pattern;
}

Example 4 with And

use of org.mvel2.ast.And in project drools by kiegroup.

the class ConditionAnalyzer method analyzeCondition.

private Condition analyzeCondition(ASTNode node) {
    boolean isNegated = false;
    if (node instanceof Negation) {
        isNegated = true;
        ExecutableStatement statement = ((Negation) node).getStatement();
        if (statement instanceof ExecutableLiteral) {
            return new FixedValueCondition(!(Boolean) ((ExecutableLiteral) statement).getLiteral());
        }
        node = ((ExecutableAccessor) statement).getNode();
    }
    node = analyzeSubstatement(node);
    if (node instanceof LiteralNode && node.getEgressType() == Boolean.class) {
        boolean literalValue = (Boolean) node.getLiteralValue();
        return new FixedValueCondition(isNegated ? !literalValue : literalValue);
    }
    if (node instanceof Negation) {
        isNegated = !isNegated;
        node = ((ExecutableAccessor) ((Negation) node).getStatement()).getNode();
        node = analyzeSubstatement(node);
    }
    if (node instanceof And || node instanceof Or) {
        return analyzeCombinedCondition((BooleanNode) node, isNegated);
    }
    return analyzeSingleCondition(node, isNegated);
}

Example 5 with And

use of org.mvel2.ast.And in project drools by kiegroup.

the class PatternBuilder method attachPattern.

private void attachPattern(final BuildContext context, final BuildUtils utils, final Pattern pattern) throws InvalidPatternException {
    // Set pattern offset to the appropriate value
    pattern.setOffset(context.getCurrentPatternOffset());
    // this is needed for Activation patterns, to allow declarations and annotations to be used like field constraints
    if (ClassObjectType.Match_ObjectType.isAssignableFrom(pattern.getObjectType())) {
        PropertyHandler handler = PropertyHandlerFactory.getPropertyHandler(AgendaItemImpl.class);
        if (handler == null) {
            PropertyHandlerFactoryFixer.getPropertyHandlerClass().put(AgendaItemImpl.class, new ActivationPropertyHandler());
        }
    }
    Constraints constraints = createConstraints(context, pattern);
    // Create BetaConstraints object
    context.setBetaconstraints(constraints.betaConstraints);
    if (pattern.getSource() != null) {
        context.setAlphaConstraints(constraints.alphaConstraints);
        final int currentOffset = context.getCurrentPatternOffset();
        PatternSource source = pattern.getSource();
        ReteooComponentBuilder builder = utils.getBuilderFor(source);
        if (builder == null) {
            throw new RuntimeException("Unknown pattern source type: " + source.getClass() + " for source " + source + " on pattern " + pattern);
        }
        builder.build(context, utils, source);
        // restoring offset
        context.setCurrentPatternOffset(currentOffset);
    } else {
        // default entry point
        PatternSource source = EntryPointId.DEFAULT;
        ReteooComponentBuilder builder = utils.getBuilderFor(source);
        builder.build(context, utils, source);
    }
    buildBehaviors(context, utils, pattern, constraints);
    if (context.getObjectSource() != null) {
        attachAlphaNodes(context, utils, pattern, constraints.alphaConstraints);
    }
    buildXpathConstraints(context, utils, pattern, constraints);
    // last thing to do is increment the offset, since if the pattern has a source,
    // offset must be overriden
    context.incrementCurrentPatternOffset();
}