orm.ORM.java Source code

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Here is the source code for orm.ORM.java

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/*
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package orm;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.List;
import java.util.Scanner;
import javax.management.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

/**
 *
 * @author shussain.bscs13seecs
 */
public class ORM {

    /**
     * @param args the command line arguments
     */
    private static SessionFactory factory;

    public static void main(String[] args) throws FileNotFoundException, NoSuchAlgorithmException, IOException {
        // TODO code application logic here
        MessageDigest md = MessageDigest.getInstance("MD5");
        FileInputStream fis = new FileInputStream("c:\\apache\\cxf.jar");

        byte[] dataBytes = new byte[1024];

        int nread = 0;
        while ((nread = fis.read(dataBytes)) != -1) {
            md.update(dataBytes, 0, nread);
        }
        ;
        byte[] mdbytes = md.digest();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < mdbytes.length; i++) {
            sb.append(Integer.toString((mdbytes[i] & 0xff) + 0x100, 16).substring(1));
        }
        System.out.println("Digest(in hex format):: " + sb.toString());

        String checksum;

        checksum = sb.toString();

        /// Hibernate Mapping starts here....

        try {
            factory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            System.err.println("Failed to create sessionFactory object." + ex);
            throw new ExceptionInInitializerError(ex);
        }
        //creating configuration object  
        Configuration cfg = new Configuration();
        cfg.configure("hibernate.cfg.xml");//populates the data of the configuration file  
        //creating seession factory object  

        ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(cfg.getProperties())
                .build();
        SessionFactory factory = cfg.buildSessionFactory(serviceRegistry);

        //creating session object  
        Session session = factory.openSession();

        Transaction t = session.beginTransaction();
        file e1 = new file();
        e1.setID(115);
        e1.setName("something");
        e1.setHashValue(checksum);
        session.persist(e1);//persisting the object  
        t.commit();//transaction is commited  
        session.close();

        boolean a;
        a = ask_user();

        if (a == true) {
            Scanner o = new Scanner(System.in);
            String s;

            System.out.print("Enter the filename");
            s = o.nextline();

            String hql = "SELECT" + s + "FROM file e";
            String new_check;

            Query query = session.createQuery(hql);
            List results;
            results = query.list();

            hql2 = "SELECT file hash FROM file WHERE Name like " + o;
            Query query2 = session.createQuery(hql2);
            List results2 = query2.list();
            String new_check;
            new_check = checksum_cal(o);

            if (new_check.equals(old_check)) {

                System.out.println("No change");
            }
        } else {

            System.out.println("Change in file");

        }

    }

    // function for asking the user whether he wants to check whether the file has changed or not.
    // Have implemented passive integrity
    public boolean ask_user() {

        int a;

        Scanner in = new Scanner(System.in);
        System.out.print("Press 1 if you want to check integrity. Press any key to exit");
        a = in.nextInt();
        if (a == 1) {
            return true;

        } else {
            return false;
        }

    }

    // function for checksum
    public String checksum_cal(String file_path)
            throws NoSuchAlgorithmException, FileNotFoundException, IOException {
        MessageDigest md = MessageDigest.getInstance("MD5");
        FileInputStream fis = new FileInputStream(file_path);

        byte[] dataBytes = new byte[1024];

        int nread = 0;
        while ((nread = fis.read(dataBytes)) != -1) {
            md.update(dataBytes, 0, nread);
        }
        ;
        byte[] mdbytes = md.digest();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < mdbytes.length; i++) {
            sb.append(Integer.toString((mdbytes[i] & 0xff) + 0x100, 16).substring(1));
        }
        System.out.println("Digest(in hex format):: " + sb.toString());
        return sb.toString();

    }

}