User

package com.torrid.gwt.pollingApp.server;


import com.google.appengine.api.datastore.Key;

import javax.jdo.annotations.EmbeddedOnly;
import javax.jdo.annotations.Embedded;
import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.PrimaryKey;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.Version;
import javax.jdo.annotations.Extension;
import javax.jdo.annotations.VersionStrategy;
import javax.jdo.PersistenceManagerFactory;
import javax.jdo.PersistenceManager;
import javax.jdo.JDOHelper;
import javax.jdo.Query;
import com.torrid.gwt.pollingApp.server.PMF;

import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;

@PersistenceCapable
@Version(strategy=VersionStrategy.VERSION_NUMBER, column="VERSION",
         extensions={@Extension(vendorName="datanucleus", key="field-name", value="myVersion")})
public class User{

	@PrimaryKey
    @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
    private Long id;

    protected Long version;
	@Persistent
	private String name;

	@Persistent
	@Embedded
	private Password kunji;

    public void setName(String name){
		this.name=name;
	}
	public void setPassword(String pass){
		byte[] bSalt;
		String salt = null;
		String hash = null;
		try{
			bSalt = PassEncryptionService.generateSalt();
			salt = new String(bSalt);
			hash = new String(PassEncryptionService.getEncryptedPassword(pass,bSalt));
		}
		catch(NoSuchAlgorithmException e){
			//no idea about what to do yet.
		}
		catch(InvalidKeySpecException e){
			//no idea about what to do yet.
		}
		kunji=new Password(hash,salt);
	}
	public String getPassword(){
		return "abc";
	}
    public String getName(){
		return this.name;
	}
	public Long getId(){
		return this.id;
	}

	@PersistenceCapable
	@EmbeddedOnly
	public static class Password{
		@Persistent
		private String hash;

		@Persistent
		private String salt;

		public Password(String hash,String salt){
			this.hash=hash;		this.salt=salt;
		}

	}
	public static User findUser(Long id){
		if(id==null)
			return null;
		PersistenceManager pm = PMF.getInstance().getPersistenceManager();
		return pm.getObjectById(User.class,id);
	}

	public Long getVersion(){
		return this.version;
	}

	public void persist(){
		PersistenceManager pm  = PMF.getInstance().getPersistenceManager();
		try{
			pm.makePersistent(this);
		}
		finally{
			pm.close();
		}
	}


}