fruitbasket.java

Java Crawler with domain knowledge path

package HtreeExa;


import jdbm.RecordManager;
import jdbm.RecordManagerFactory;
import jdbm.helper.FastIterator;
import jdbm.htree.HTree;
//import jdbm.helper.Serializer;
import java.io.IOException;
import java.util.Properties;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;
/**
 * Sample JDBM application to demonstrate the use of basic JDBM operations.
 *
 * @author <a href="mailto:[e-mail]">Alex Boisvert</a>
 * @version $Id: FruitBasket.java,v 1.3 2003/08/06 20:10:15 boisvert Exp $
 */
public class FruitBasket
{
    RecordManager  recman;
    HTree          hashtable;
    FastIterator   iter;
    String         fruit;
    String         color;


    public FruitBasket()
        throws IOException
    {
     /*   Properties props = new Properties();
        recman = RecordManagerFactory.createRecordManager( "H-Tree", props );

        // create or load fruit basket (hashtable of fruits)

            System.out.println( "Creating new root" );
            hashtable = HTree.createInstance( recman );
            recman.setNamedObject( "Root", hashtable.getRecid() );


    //   Properties props = new Properties();
        // recman = RecordManagerFactory.createRecordManager( "Tree", props );
        System.out.println();
        hashtable = HTree.createInstance( recman );
        recman.setNamedObject( "Root", hashtable.getRecid() );
        System.out.println( "Adding node to the Root..." );
        hashtable.put( "arts", "arts" );
        hashtable.put( "business", "business" );
        hashtable.put( "science", "science" );
        hashtable.put( "computer", "computer" );
        hashtable.put( "regional", "regional" );
        hashtable.put( "rediff", "rediff" );
        showBasket();

        hashtable = HTree.createInstance( recman );
        recman.setNamedObject( "computer", hashtable.getRecid() );
        System.out.println( "Adding nodes to the computer..." );
        hashtable.put( "algorithem", "algorithem" );
        hashtable.put( "artificial intelligence", "artificial intelligence" );
        hashtable.put( "program mining", "program mining" );
        hashtable.put( "robotics", "robotics" );
        hashtable.put( "security", "security" );
        hashtable.put( "software", "software" );
        showBasket();

        hashtable = HTree.createInstance( recman );
         recman.setNamedObject( "security", hashtable.getRecid() );
         System.out.println( "Adding nodes to the Security..." );
        hashtable.put( "authentication", "authentication" );
        hashtable.put( "hacking", "hacking" );
        hashtable.put( "firewalls", "firewalls" );
        hashtable.put( "secure programming", "secure programming" );
        showBasket();
        
        hashtable = HTree.createInstance( recman );
        recman.setNamedObject( "rediff", hashtable.getRecid() );
        System.out.println( "Adding nodes to the rediff..." );
        hashtable.put( "jobs", "jobs" );
        showBasket();


         

         hashtable = HTree.createInstance( recman );
         recman.setNamedObject( "jobs", hashtable.getRecid() );
         System.out.println( "Adding nodes to the Jobs..." );
        hashtable.put( "call center", "call center" );
        hashtable.put( "accounting", "accounting" );
        hashtable.put( "banking", "banking" );
        hashtable.put( "marketing", "marketing" );
        hashtable.put( "engineering", "engineering" );
        hashtable.put( "teaching", "teaching" );
        showBasket();

         hashtable = HTree.createInstance( recman );
         recman.setNamedObject( "hacking", hashtable.getRecid() );
         System.out.println( "Adding nodes to the hacking..." );
        hashtable.put( "conven verifier", "conven verifier" );
        hashtable.put( "cracking", "cracking" );
        hashtable.put( "cryptography", "cryptography" );
        hashtable.put( "ethics", "ethics" );
        showBasket();

          recman.commit();*/
    }


    public ArrayList runDemo(String keyword)
        throws IOException
    {
        //String keyword="IDS";
        ArrayList data =new ArrayList();
        ArrayList seq =new ArrayList();
        seq.add(keyword);
        Properties props = new Properties();
        recman = RecordManagerFactory.createRecordManager( "H-Tree", props );
       // System.out.println(props.keySet());
        // create or load fruit basket (hashtable of fruits)
       // System.out.println(recman.getRootCount());
        long r=recman.getRoot(0);
       // HashSet h=new HashSet();
      //  System.out.println(recman.fetch(r));
        HashMap hm=(HashMap)recman.fetch(r);
       
 for  ( Iterator iterator = hm.entrySet (  ) .iterator (  ) ; iterator.hasNext (  ) ; )   {  
     Map.Entry entry =  ( Map.Entry )  iterator.next (  ) ; 
     String key =  ( String ) entry.getKey (  ) ; 
    // String value =  ( String ) entry.getValue (  ) ; 
    // System.out.println(key);
     data.add(key);
  } 
    
   // if(hm.containsKey(keyword))
  //  {

        
  //  }
 //   else
 //   {
     // int s=data.size();
      //System.out.println("size"+s);
      for(int i=0;i<data.size();i++)
      {
          //System.out.println("inter"+i);
      long recid = recman.getNamedObject( (String)data.get(i) );
      if ( recid != 0 ) {
           
            hashtable = HTree.load( recman, recid );
            iter = hashtable.keys();
            fruit = (String) iter.next();
        while ( fruit != null ) {
              if(keyword.equals(fruit))
              {
               
               seq.add((String)data.get(i));
               keyword=(String)data.get(i);
               i=0;
               i--;
              // data.clear();
               //data.add(keyword);
               
              // System.out.print( " " + fruit );
              // System.out.println((String)data.get(i));
              // break;
              }    
           // System.out.print( " " + fruit );
            fruit = (String) iter.next();
           }
            
        }
      }
  //  }
       
     for(int i=0;i<seq.size();i++)
    { 
        // System.out.println("keyword"+seq.get(i));
     } 
      return seq;
    }


    public void showBasket() 
        throws IOException
    {
        // Display content of fruit basket
       // System.out.println();
      //  System.out.print( "Fruit basket contains: " );
        iter = hashtable.keys();
        fruit = (String) iter.next();
        while ( fruit != null ) {
          //  System.out.print( " " + fruit );
            fruit = (String) iter.next();
        }
       // System.out.println();
    }
    
    
    public static void main( String[] args )
    {
        try {
            FruitBasket basket = new FruitBasket();
          basket.runDemo("software");
        } catch ( IOException ioe ) {
            ioe.printStackTrace();
        }
    }

}