/*
* Copyright 2012-2016 the original author or authors.
*
* 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.
*/
package org.springframework.data.rest.tests.gemfire;
import java.math.BigDecimal;
import org.springframework.util.Assert;
/**
* @author Oliver Gierke
*/
public class LineItem {
private BigDecimal price;
private int amount;
private Long productId;
/**
* Creates a new {@link LineItem} for the given {@link Product}.
*
* @param product must not be {@literal null}.
*/
public LineItem(Product product) {
this(product, 1);
}
/**
* Creates a new {@link LineItem} for the given {@link Product} and amount.
*
* @param product must not be {@literal null}.
* @param amount
*/
public LineItem(Product product, int amount) {
Assert.notNull(product, "The given Product must not be null!");
Assert.isTrue(amount > 0, "The amount of Products to be bought must be greater than 0!");
this.productId = product.getId();
this.amount = amount;
this.price = product.getPrice();
}
protected LineItem() {}
/**
* Returns the id of the {@link Product} the {@link LineItem} refers to.
*
* @return
*/
public Long getProductId() {
return productId;
}
/**
* Returns the amount of {@link Product}s to be ordered.
*
* @return
*/
public int getAmount() {
return amount;
}
/**
* Returns the price a single unit of the {@link LineItem}'s product.
*
* @return the price
*/
public BigDecimal getUnitPrice() {
return price;
}
/**
* Returns the total for the {@link LineItem}.
*
* @return
*/
public BigDecimal getTotal() {
return price.multiply(BigDecimal.valueOf(amount));
}
}