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Example 1 with FieldAccessorNH

use of org.mvel2.optimizers.impl.refl.nodes.FieldAccessorNH in project mvel by mvel.

the class ReflectiveAccessorOptimizer method getBeanProperty.

private Object getBeanProperty(Object ctx, String property) throws Exception {
    if ((pCtx == null ? currType : pCtx.getVarOrInputTypeOrNull(property)) == Object.class && !pCtx.isStrongTyping()) {
        currType = null;
    }
    if (first) {
        if ("this".equals(property)) {
            addAccessorNode(new ThisValueAccessor());
            return this.thisRef;
        } else if (variableFactory != null && variableFactory.isResolveable(property)) {
            if (variableFactory.isIndexedFactory() && variableFactory.isTarget(property)) {
                int idx;
                addAccessorNode(new IndexedVariableAccessor(idx = variableFactory.variableIndexOf(property)));
                VariableResolver vr = variableFactory.getIndexedVariableResolver(idx);
                if (vr == null) {
                    variableFactory.setIndexedVariableResolver(idx, variableFactory.getVariableResolver(property));
                }
                return variableFactory.getIndexedVariableResolver(idx).getValue();
            } else {
                addAccessorNode(new VariableAccessor(property));
                return variableFactory.getVariableResolver(property).getValue();
            }
        }
    }
    boolean classRef = false;
    Class<?> cls;
    if (ctx instanceof Class) {
        if (MVEL.COMPILER_OPT_SUPPORT_JAVA_STYLE_CLASS_LITERALS && "class".equals(property)) {
            return ctx;
        }
        cls = (Class<?>) ctx;
        classRef = true;
    } else if (ctx != null) {
        cls = ctx.getClass();
    } else {
        cls = currType;
    }
    if (hasPropertyHandler(cls)) {
        PropertyHandlerAccessor acc = new PropertyHandlerAccessor(property, cls, getPropertyHandler(cls));
        addAccessorNode(acc);
        return acc.getValue(ctx, thisRef, variableFactory);
    }
    Member member = cls != null ? getFieldOrAccessor(cls, property) : null;
    if (member != null && classRef && (member.getModifiers() & Modifier.STATIC) == 0) {
        member = null;
    }
    Object o;
    if (member instanceof Method) {
        try {
            o = ctx != null ? ((Method) member).invoke(ctx, EMPTYARG) : null;
            if (hasNullPropertyHandler()) {
                addAccessorNode(new GetterAccessorNH((Method) member, getNullPropertyHandler()));
                if (o == null)
                    o = getNullPropertyHandler().getProperty(member.getName(), ctx, variableFactory);
            } else {
                addAccessorNode(new GetterAccessor((Method) member));
            }
        } catch (IllegalAccessException e) {
            Method iFaceMeth = determineActualTargetMethod((Method) member);
            if (iFaceMeth == null)
                throw new PropertyAccessException("could not access field: " + cls.getName() + "." + property, this.expr, this.start, pCtx);
            o = iFaceMeth.invoke(ctx, EMPTYARG);
            if (hasNullPropertyHandler()) {
                addAccessorNode(new GetterAccessorNH((Method) member, getNullMethodHandler()));
                if (o == null)
                    o = getNullMethodHandler().getProperty(member.getName(), ctx, variableFactory);
            } else {
                addAccessorNode(new GetterAccessor(iFaceMeth));
            }
        } catch (IllegalArgumentException e) {
            if (member.getDeclaringClass().equals(ctx)) {
                try {
                    Class c = Class.forName(member.getDeclaringClass().getName() + "$" + property);
                    throw new CompileException("name collision between innerclass: " + c.getCanonicalName() + "; and bean accessor: " + property + " (" + member.toString() + ")", expr, tkStart);
                } catch (ClassNotFoundException e2) {
                // fallthru
                }
            }
            throw e;
        }
        currType = toNonPrimitiveType(((Method) member).getReturnType());
        return o;
    } else if (member != null) {
        Field f = (Field) member;
        if ((f.getModifiers() & Modifier.STATIC) != 0) {
            o = f.get(null);
            if (hasNullPropertyHandler()) {
                addAccessorNode(new StaticVarAccessorNH((Field) member, getNullMethodHandler()));
                if (o == null)
                    o = getNullMethodHandler().getProperty(member.getName(), ctx, variableFactory);
            } else {
                addAccessorNode(new StaticVarAccessor((Field) member));
            }
        } else {
            o = ctx != null ? f.get(ctx) : null;
            if (hasNullPropertyHandler()) {
                addAccessorNode(new FieldAccessorNH((Field) member, getNullMethodHandler()));
                if (o == null)
                    o = getNullMethodHandler().getProperty(member.getName(), ctx, variableFactory);
            } else {
                addAccessorNode(new FieldAccessor((Field) member));
            }
        }
        currType = toNonPrimitiveType(f.getType());
        return o;
    } else if (ctx instanceof Map && (((Map) ctx).containsKey(property) || nullSafe)) {
        addAccessorNode(new MapAccessor(property));
        return ((Map) ctx).get(property);
    } else if (ctx != null && "length".equals(property) && ctx.getClass().isArray()) {
        addAccessorNode(new ArrayLength());
        return getLength(ctx);
    } else if (LITERALS.containsKey(property)) {
        addAccessorNode(new StaticReferenceAccessor(ctx = LITERALS.get(property)));
        return ctx;
    } else {
        Object tryStaticMethodRef = tryStaticAccess();
        staticAccess = true;
        if (tryStaticMethodRef != null) {
            if (tryStaticMethodRef instanceof Class) {
                addAccessorNode(new StaticReferenceAccessor(tryStaticMethodRef));
                return tryStaticMethodRef;
            } else if (tryStaticMethodRef instanceof Field) {
                addAccessorNode(new StaticVarAccessor((Field) tryStaticMethodRef));
                return ((Field) tryStaticMethodRef).get(null);
            } else {
                addAccessorNode(new StaticReferenceAccessor(tryStaticMethodRef));
                return tryStaticMethodRef;
            }
        } else if (ctx instanceof Class) {
            Class c = (Class) ctx;
            for (Method m : c.getMethods()) {
                if (property.equals(m.getName())) {
                    if (pCtx != null && pCtx.getParserConfiguration() != null ? pCtx.getParserConfiguration().isAllowNakedMethCall() : MVEL.COMPILER_OPT_ALLOW_NAKED_METH_CALL) {
                        o = m.invoke(null, EMPTY_OBJ_ARR);
                        if (hasNullMethodHandler()) {
                            addAccessorNode(new MethodAccessorNH(m, new ExecutableStatement[0], getNullMethodHandler()));
                            if (o == null)
                                o = getNullMethodHandler().getProperty(m.getName(), ctx, variableFactory);
                        } else {
                            addAccessorNode(new MethodAccessor(m, new ExecutableStatement[0]));
                        }
                        return o;
                    } else {
                        addAccessorNode(new StaticReferenceAccessor(m));
                        return m;
                    }
                }
            }
            try {
                Class subClass = findClass(variableFactory, c.getName() + "$" + property, pCtx);
                addAccessorNode(new StaticReferenceAccessor(subClass));
                return subClass;
            } catch (ClassNotFoundException cnfe) {
            // fall through.
            }
        } else if (pCtx != null && pCtx.getParserConfiguration() != null ? pCtx.getParserConfiguration().isAllowNakedMethCall() : MVEL.COMPILER_OPT_ALLOW_NAKED_METH_CALL) {
            return getMethod(ctx, property);
        }
        // if it is not already using this as context try to read the property value from this
        if (ctx != this.thisRef && this.thisRef != null) {
            addAccessorNode(new ThisValueAccessor());
            return getBeanProperty(this.thisRef, property);
        }
        if (ctx == null) {
            throw new PropertyAccessException("unresolvable property or identifier: " + property, expr, start, pCtx);
        } else {
            throw new PropertyAccessException("could not access: " + property + "; in class: " + ctx.getClass().getName(), expr, start, pCtx);
        }
    }
}
Also used : FieldAccessorNH(org.mvel2.optimizers.impl.refl.nodes.FieldAccessorNH) FieldAccessor(org.mvel2.optimizers.impl.refl.nodes.FieldAccessor) DynamicFieldAccessor(org.mvel2.optimizers.impl.refl.nodes.DynamicFieldAccessor) Field(java.lang.reflect.Field) GetterAccessorNH(org.mvel2.optimizers.impl.refl.nodes.GetterAccessorNH) ThisValueAccessor(org.mvel2.optimizers.impl.refl.nodes.ThisValueAccessor) StaticVarAccessorNH(org.mvel2.optimizers.impl.refl.nodes.StaticVarAccessorNH) CompileException(org.mvel2.CompileException) MapAccessor(org.mvel2.optimizers.impl.refl.nodes.MapAccessor) Member(java.lang.reflect.Member) GetterAccessor(org.mvel2.optimizers.impl.refl.nodes.GetterAccessor) IndexedVariableAccessor(org.mvel2.optimizers.impl.refl.nodes.IndexedVariableAccessor) VariableAccessor(org.mvel2.optimizers.impl.refl.nodes.VariableAccessor) MethodAccessor(org.mvel2.optimizers.impl.refl.nodes.MethodAccessor) PropertyAccessException(org.mvel2.PropertyAccessException) ArrayLength(org.mvel2.optimizers.impl.refl.nodes.ArrayLength) StaticVarAccessor(org.mvel2.optimizers.impl.refl.nodes.StaticVarAccessor) Method(java.lang.reflect.Method) PropertyHandlerAccessor(org.mvel2.optimizers.impl.refl.nodes.PropertyHandlerAccessor) StaticReferenceAccessor(org.mvel2.optimizers.impl.refl.nodes.StaticReferenceAccessor) MethodAccessorNH(org.mvel2.optimizers.impl.refl.nodes.MethodAccessorNH) IndexedVariableAccessor(org.mvel2.optimizers.impl.refl.nodes.IndexedVariableAccessor) VariableResolver(org.mvel2.integration.VariableResolver) Map(java.util.Map)

Aggregations

Field (java.lang.reflect.Field)1 Member (java.lang.reflect.Member)1 Method (java.lang.reflect.Method)1 Map (java.util.Map)1 CompileException (org.mvel2.CompileException)1 PropertyAccessException (org.mvel2.PropertyAccessException)1 VariableResolver (org.mvel2.integration.VariableResolver)1 ArrayLength (org.mvel2.optimizers.impl.refl.nodes.ArrayLength)1 DynamicFieldAccessor (org.mvel2.optimizers.impl.refl.nodes.DynamicFieldAccessor)1 FieldAccessor (org.mvel2.optimizers.impl.refl.nodes.FieldAccessor)1 FieldAccessorNH (org.mvel2.optimizers.impl.refl.nodes.FieldAccessorNH)1 GetterAccessor (org.mvel2.optimizers.impl.refl.nodes.GetterAccessor)1 GetterAccessorNH (org.mvel2.optimizers.impl.refl.nodes.GetterAccessorNH)1 IndexedVariableAccessor (org.mvel2.optimizers.impl.refl.nodes.IndexedVariableAccessor)1 MapAccessor (org.mvel2.optimizers.impl.refl.nodes.MapAccessor)1 MethodAccessor (org.mvel2.optimizers.impl.refl.nodes.MethodAccessor)1 MethodAccessorNH (org.mvel2.optimizers.impl.refl.nodes.MethodAccessorNH)1 PropertyHandlerAccessor (org.mvel2.optimizers.impl.refl.nodes.PropertyHandlerAccessor)1 StaticReferenceAccessor (org.mvel2.optimizers.impl.refl.nodes.StaticReferenceAccessor)1 StaticVarAccessor (org.mvel2.optimizers.impl.refl.nodes.StaticVarAccessor)1