A Simple example for working using JDOM as a client for Amazon Advertising API

Well the paper is done, and I will post my comments in a while, but for now... a simple example for working with jdom... note that it wont work as posted, because I am taking out the Access Key, also it uses a a custom class called Review which I'll post separately.

import java.net.URL;

import com.sun.syndication.io.XmlReader;

import org.jdom.Document;

import org.jdom.Element;

import org.jdom.input.SAXBuilder;

import java.util.*;

import java.io.*;

import org.jdom.filter.*;



public class FeedParserByProduct 

{

	   public static void main(String[] args) throws Exception 

	   {

		   File f = new File("c:\\temp\\testdata"+System.currentTimeMillis()+".txt");

		   f.createNewFile();

		  

		   FileWriter fw=new FileWriter(f);

		   //ListlRev=getReviewData("B0013O98SW","Windows-OS-Operating System");

		   //ListlRev=getReviewData("B00022PTT8","Windows-OS-Operating System");

		   //ListlRev=getReviewData("B000KRG6P6","Wolf-Shirt");

		   //ListlRev=getReviewData("B00193QFFG","Monitor-3star");

		   ListlRev=getReviewData(args[0],args[1]);

		   

		   appendReviewersDataToReviewData(lRev);

		   fw.write(lRev.get(0).getRowHeaders()+"\r\n");

		   for(int i=0;i		   {

			   fw.write(lRev.get(i).getRawDataRowFormat()+"\r\n");

		   }

		 System.out.println("Composite RealScore1 is:"+getMeanRealScore1Composite(lRev));

		   //System.out.println("done");

		 fw.flush(); 

		}

	   

	   public static double getMeanRealScore1Composite(List revs) throws Exception

	   {

		   double d=0;

		   for(int i=0;i		   {

			   d+=revs.get(i).getRealScore1();

		   }

		   return d/revs.size();

		   

		   

	   }

	   static void appendReviewersDataToReviewData(List revList)throws Exception

	   {

		   for (int i=0;i		   {

			   Review r = revList.get(i);

			   Document d =getReviewerData(r.ReviewerID);

			   appendReviewerToReview(d,r);

		   }

	   }

	   private static void appendReviewerToReview(Document d, Review r) 

	   {

		   	  int runningStarTotal=0;

		   	  int numberOfFives=0;

		   	  int keyWordAppears=0;

		   	  int totalHelpfulVotes=0;

		   	  int totalVotes=0;

		   	  int holder=0;

	          Element e = d.getRootElement();

	          ElementFilter ef = new ElementFilter( "Customers", null );         

	          List el = e.getContent( ef );

	          e=(Element)el.get(0);

	          ef = new ElementFilter( "Customer", null );

	          el = e.getContent( ef );

	          e=(Element)el.get(0);

	          

	          ef = new ElementFilter( "CustomerReviews", null );

	          el = e.getContent( ef );

	          e=(Element)el.get(0);

	          

	          ef = new ElementFilter( "TotalReviews", null );

	          el = e.getContent( ef );

	          

	          Element esub=null;

	          esub=(Element)el.get(0);

	          String sx =esub.getText();

	          holder=Integer.parseInt(sx);

	          r.reviewer_TotalReviews=holder;

	          



	          ef = new ElementFilter( "Review", null );

	          el=e.getContent( ef );

	          

	           //System.out.println(el.size());

	          for(int i=0;i	          {

	        	  esub=(Element)el.get(i);

	        	  //get the rating

	        	  ef=new ElementFilter( "Rating", null );

	        	  el=esub.getContent(ef);	        	  

	        	  holder=Integer.parseInt(((Element)el.get(0)).getText());

	        	  runningStarTotal=runningStarTotal+holder;	        	  

	        	  if(holder==5){numberOfFives +=1;}

	        	  

	        	  //get HelpfulVotes

	        	  ef=new ElementFilter( "HelpfulVotes", null );

	        	  el=esub.getContent(ef);	        	  

	        	  holder=Integer.parseInt(((Element)el.get(0)).getText());

	        	  totalHelpfulVotes=runningStarTotal+holder;

	        	  

	        	  //Get Total Votes

	        	  ef=new ElementFilter( "TotalVotes", null );

	        	  el=esub.getContent(ef);	        	  

	        	  holder=Integer.parseInt(((Element)el.get(0)).getText());

	        	  totalVotes=runningStarTotal+holder;	        	  	        	  

	        	  //Check to see if any key words appear in review

	        	  //deprecated as it seems that multiple reviews on the same subject can be good or bad

	        	  

	          }

	          

		   	  r.reviewer_TotalReviewPoints=runningStarTotal;

		   	  r.reviewer_TotalFives=numberOfFives;

		   	 //keyWordAppears=0;

		   	  r.reviewer_HelpfulVotes= totalHelpfulVotes;

		   	  r.reviewer_TotalVotes=totalVotes; 

	   }

	   



	   

	   

	   /**

	    * 

	    * @param Reviews- Modefies review data list to enrich the profile

	    */

	   static Document getReviewerData(String ReviewerID) throws Exception

	   {

		   

		   Document doc=getXMLDoc("http://ecs.amazonaws.com/onca/xml?" +

			   "Service=AWSECommerceService&" +

			   "AWSAccessKeyId=AKIAJKIZAU3BXLEUC4DA&" +

			   "AssociateTag=dvshchyokin@hotmail.com&" +

			   "Operation=CustomerContentLookup&" +

			   "CustomerId="+ReviewerID+

			   "&ResponseGroup=CustomerReviews");

		   return doc;

	   }

	   private static Document getXMLDoc(String s) throws Exception

	   {

		   //System.out.println(s);

		   LinkedList ret = new LinkedList();

		   //String s ="http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=AKIAJKIZAU3BXLEUC4DA&Operation=ItemLookup&ItemId=B0013O98SW&ResponseGroup=Reviews&Version=2008-08-19";

		   URL feedUrl = new URL(s);

                    

           XmlReader xmlr=new XmlReader(feedUrl);



              Document doc = null;



           SAXBuilder sb = new SAXBuilder();

           doc = sb.build(feedUrl);  

           return doc;

	   }

	   

	   

	   static List getReviewData(String productID, String pKeyWords) throws Exception

	   {

		   LinkedList ret= new LinkedList();

		  for(int j=1;j<50;j++)

		  {

		   try{

				   Document doc=getXMLDoc("http://ecs.amazonaws.com/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=[USE YOUR OWN ACCESS KEY]&Operation=ItemLookup&ItemId="+ productID +"&ResponseGroup=Reviews&Version=2008-08-19&ReviewPage="+Integer.toString(j));

		           Element e =doc.getRootElement();

		          

		          ElementFilter ef = new ElementFilter( "Items", null );

		          List el = e.getContent( ef );

		          e=(Element)el.get(0);

		          ef = new ElementFilter( "Item", null );

		          el = e.getContent( ef );

		          e=(Element)el.get(0);

		          ef = new ElementFilter( "CustomerReviews", null );

		          el = e.getContent( ef );

		          e=(Element)el.get(0);

		          ef = new ElementFilter( "Review", null );

		          el = e.getContent( ef );

		          String temp;

		          for(int i=0;i		          {

		       	   temp=concatReviewData((Element)el.get(i));

		       	   ret.add(new Review(temp,pKeyWords));

		          }

		   }

		   catch(Exception ex){break;}

		  }

          return ret;

	   }

	   

	   static String concatReviewData(Element e)

	   {



		   String temp="";

		   List el =e.getContent();

		   for(int i=0;i		   {

			   temp=temp+((Element)el.get(i)).getText()+"|";

			 

		   }

		   ElementFilter ef = new ElementFilter( "Reviewer", null );

           el = e.getContent( ef );

           e=(Element)el.get(0);

           el=e.getContent();

		   for(int j=0;j		   {

			   temp=temp+((Element)el.get(j)).getText()+"|";

		   }

		   //System.out.println(temp);

		   return temp; 

	   }



}