content: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.bigtop.datagenerators.bigpetstore.generators.products;
  
  import java.util.Iterator;
  import java.util.Map;
  
  import org.apache.bigtop.datagenerators.bigpetstore.Constants;
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.Product;
  
  import com.google.common.collect.Maps;
  
  public class ProductBuilderIterator implements Iterator<Product>
  {
  	Iterator<Map<String, ProductFieldValue>> productIterator;
  	double basePrice;
  	String productCategory;
  
  	public ProductBuilderIterator(double basePrice, String productCategory,
  			Iterator<Map<String, ProductFieldValue>> productIterator)
  	{
  		this.productIterator = productIterator;
  		this.basePrice = basePrice;
  		this.productCategory = productCategory;
  	}
  
  	@Override
  	public boolean hasNext()
  	{
  		return productIterator != null && productIterator.hasNext();
  	}
  
  	@Override
  	public Product next()
  	{
  		Map<String, ProductFieldValue> productComponents = productIterator.next();
  
  		double sum = 0.0;
  		double product = 1.0;
  
  		Map<String, Object> productFields = Maps.newHashMap();
  
  		for(Map.Entry<String, ProductFieldValue> entry : productComponents.entrySet())
  		{
  			productFields.put(entry.getKey(), entry.getValue().getValue());
  			sum += entry.getValue().getAdd();
  			product *= entry.getValue().getMultiply();
  		}
  
  		double quantity = (Double) productFields.get(Constants.PRODUCT_QUANTITY);
  		double price = product * (sum + basePrice);
  		double unitPrice = price / quantity;
  
  		productFields.put(Constants.PRODUCT_UNIT_PRICE, unitPrice);
  		productFields.put(Constants.PRODUCT_PRICE, price);
  		productFields.put(Constants.PRODUCT_CATEGORY, productCategory);
  
  		return new Product(productFields);
  	}
  
  	@Override
  	public void remove()
  	{
  		throw new UnsupportedOperationException("ProductBuilder does not support remove()");
  	}
  
  }
  