/*
* #%L
* BroadleafCommerce Framework
* %%
* Copyright (C) 2009 - 2013 Broadleaf Commerce
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
package org.broadleafcommerce.core.catalog.service.dynamic;
import org.broadleafcommerce.common.money.Money;
import org.broadleafcommerce.core.catalog.domain.Sku;
import org.broadleafcommerce.core.catalog.domain.SkuImpl;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.math.BigDecimal;
public class DefaultDynamicSkuPricingInvocationHandler implements InvocationHandler {
private Sku delegate;
private Money retailPrice;
private Money salePrice;
public DefaultDynamicSkuPricingInvocationHandler(Sku sku) {
this.delegate = sku;
try {
Field retail = getSingleField(delegate.getClass(), "retailPrice");
retail.setAccessible(true);
Object retailVal = retail.get(delegate);
retailPrice = retailVal==null?null:new Money((BigDecimal) retailVal);
Field sale = getSingleField(delegate.getClass(), "salePrice");
sale.setAccessible(true);
Object saleVal = sale.get(delegate);
salePrice = saleVal==null?null:new Money((BigDecimal) saleVal);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* This is used with SkuBundleItem to allow the bundle override price.
*
* @param sku
* @param salePriceOverride
*/
public DefaultDynamicSkuPricingInvocationHandler(Sku sku, BigDecimal salePriceOverride) {
this(sku);
if (salePriceOverride != null) {
salePrice = new Money(salePriceOverride);
}
}
/**
* This is used with SkuBundleItem to allow the bundle override price.
*
* @param sku
* @param salePriceOverride
*/
public DefaultDynamicSkuPricingInvocationHandler(BigDecimal salePriceOverride) {
this(new SkuImpl());
if (salePriceOverride != null) {
salePrice = new Money(salePriceOverride);
}
}
/**
* Used to add ProductOptionValue price adjustments to the proxy Sku
*
* @param sku
* @param adjustments - the sum total of the ProductOptionValue price adjustments. If null, this
* functions the same as the default constructor. This value is added to both the salePrice and retailPrice
*/
public DefaultDynamicSkuPricingInvocationHandler(Sku sku, Money adjustments) {
this(sku);
if (adjustments != null) {
salePrice = (salePrice == null) ? adjustments : salePrice.add(adjustments);
retailPrice = (retailPrice == null) ? adjustments : retailPrice.add(adjustments);
}
}
private Field getSingleField(Class<?> clazz, String fieldName) throws IllegalStateException {
try {
return clazz.getDeclaredField(fieldName);
} catch (NoSuchFieldException nsf) {
// Try superclass
if (clazz.getSuperclass() != null) {
return getSingleField(clazz.getSuperclass(), fieldName);
}
return null;
}
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (method.getName().equals("getRetailPrice")) {
return retailPrice;
} else if (method.getName().equals("getSalePrice")) {
return salePrice;
} else {
return method.invoke(delegate, args);
}
}
public void reset() {
delegate = null;
retailPrice = null;
salePrice = null;
}
}