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.Collection;
  import java.util.Iterator;
  import java.util.Map;
  
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.Product;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.products.cartesian.CartesianProduct;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.products.cartesian.CartesianProductBase;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.products.cartesian.CartesianProductField;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.products.rules.Rule;
  
  public class ProductIterator implements Iterator<Product>
  {
  
  	Iterator<Product> productIterator;
  
  	public ProductIterator(Map<String, Collection<ProductFieldValue>> fieldValues, Rule matcher,
  			double basePrice, String productCategory)
  	{
  		productIterator = new ProductFilterIterator(matcher,
  				new ProductBuilderIterator(basePrice, productCategory,
  						buildCartesianProductIterator(fieldValues)));
  	}
  
  	public Iterator<Map<String, ProductFieldValue>>
  		buildCartesianProductIterator(Map<String, Collection<ProductFieldValue>> fieldValues)
  	{
  		CartesianProduct<ProductFieldValue> product = null;
  		for(Map.Entry<String, Collection<ProductFieldValue>> pair : fieldValues.entrySet())
  		{
  			if(product == null)
  			{
  				product = new CartesianProductBase<ProductFieldValue>(pair.getKey(), pair.getValue());
  			} else
  			{
  				product = new CartesianProductField<ProductFieldValue>(pair.getKey(), pair.getValue(), product);
  			}
  
  		}
  
  		return product;
  	}
  
  	@Override
  	public boolean hasNext()
  	{
  		return productIterator.hasNext();
  	}
  
  	@Override
  	public Product next()
  	{
  		return productIterator.next();
  	}
  
  	@Override
  	public void remove()
  	{
  		throw new UnsupportedOperationException("ProductIterator does not support remove()");
  	}
  
  }
  