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.transaction;
  
  import java.util.Collection;
  import java.util.List;
  
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.Product;
  import org.apache.bigtop.datagenerators.bigpetstore.datamodels.inputs.ProductCategory;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.purchase.PurchasingModel;
  import org.apache.bigtop.datagenerators.bigpetstore.generators.purchase.PurchasingProcesses;
  import org.apache.bigtop.datagenerators.samplers.SeedFactory;
  import org.apache.bigtop.datagenerators.samplers.samplers.ConditionalSampler;
  import org.apache.bigtop.datagenerators.samplers.wfs.ConditionalWeightFunction;
  
  public class TransactionPurchasesSamplerBuilder
  {
  	final SeedFactory seedFactory;
  	final Collection<ProductCategory> productCategories;
  	final PurchasingModel purchasingProfile;
  
  	protected CustomerTransactionParameters transactionParameters;
  	protected CustomerInventory inventory;
  
  	public TransactionPurchasesSamplerBuilder(Collection<ProductCategory> productCategories,
  			PurchasingModel purchasingProfile,
  			SeedFactory seedFactory)
  	{
  		this.seedFactory = seedFactory;
  		this.productCategories = productCategories;
  		this.purchasingProfile = purchasingProfile;
  	}
  
  	public void setTransactionParameters(
  			CustomerTransactionParameters transactionParameters)
  	{
  		this.transactionParameters = transactionParameters;
  	}
  
  	public void setInventory(CustomerInventory inventory)
  	{
  		this.inventory = inventory;
  	}
  
  	public ConditionalSampler<List<Product>, Double> build() throws Exception
  	{
  		PurchasingProcesses processes = purchasingProfile.buildProcesses(seedFactory);
  
  		ConditionalWeightFunction<Double, Double> categoryWF =
  				new CategoryWeightFunction(transactionParameters.getAveragePurchaseTriggerTime());
  
  		ConditionalSampler<List<Product>, Double> sampler = new TransactionPurchasesHiddenMarkovModel(processes,
  				categoryWF, inventory, this.seedFactory);
  
  		return sampler;
  	}
  }
  