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package sample.jpa;

import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQuery;
import javax.persistence.PostLoad;
import javax.persistence.PostUpdate;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Version;
import javax.persistence.Table;

@Entity
@Table(name = "SHAREACCOUNT")
@NamedQuery(name="findThem", query="SELECT a FROM ShareAccount a")
public class ShareAccount implements Serializable {

   
    @Id
    private int shareAccountNo;
    private String ownerName;
    private int numberOfShares;
    @Version
    private int version;

    public ShareAccount(int shareAccountNo, 
                        String ownerName, 
                        int numberOfShares) {

      this.shareAccountNo = shareAccountNo;
      this.ownerName = ownerName;
      this.numberOfShares = numberOfShares;
        
    }

    public String toString() {
        return "Acc.# " + shareAccountNo +
               ", owner" + ownerName + 
               ", numberOfShares: " + 
                  numberOfShares + " $";
    }

    @PrePersist
    void prepersist() {
        System.out.println("pre persist!!");
    }
    
    @PreUpdate
    void preupdate() {
        System.out.println("pre update!!");
    }
    
    @PostUpdate
    void postupdate() {
        System.out.println("post update!!");
    }
    
    @PostLoad
    void postload() {
        System.out.println("post load!!");
    }

	public int getShareAccountNo() {
		return shareAccountNo;
	}

	public void setShareAccountNo(int shareAccountNo) {
		this.shareAccountNo = shareAccountNo;
	}

	public String getOwnerName() {
		return ownerName;
	}

	public void setOwnerName(String ownerName) {
		this.ownerName = ownerName;
	}

	public int getNumberOfShares() {
		return numberOfShares;
	}

	public void setNumberOfShares(int numberOfShares) {
		this.numberOfShares = numberOfShares;
	}

	public int getVersion() {
		return version;
	}

	public void setVersion(int version) {
		this.version = version;
	}
  
}

package sample.jpa;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Test extends 
  javax.servlet.http.HttpServlet 
  implements javax.servlet.Servlet {
  
  static final long serialVersionUID = 1L;
   
   public Test() {
	super();
   }   	
	
   protected void doGet(HttpServletRequest request,
                  HttpServletResponse response) 
                  throws ServletException, 
                  IOException {
				
    PrintWriter out = response.getWriter();
	        
    try {
     java.util.Properties env = 
       new java.util.Properties();

     env.put(Context.INITIAL_CONTEXT_FACTORY
       ,"org.apache.openejb.client.RemoteInitialContextFactory"); 
     env.put(Context.PROVIDER_URL, 
             "ejbd://127.0.0.1:4201");
	    		
     Context ctx = new InitialContext(env);
     out.println("Looking up ShareHolderBean");

     ShareHolder shareHolder = (ShareHolder)
            ctx.lookup("ShareHolderBeanRemote");
	            
     out.println("Creating ShareAccount 1, 
                   Phani, 10");
	            
     ShareAccount sa = 
         shareHolder.openShareAccount(1,"phani", 10);
     if(sa == null){
	out.println("account could not be created.");
	out.println("May be, account already 
                            exists. Check the database.");
           	
     }
     else {
        out.println("Account is successfully created");
     }
     out.println("Looking up the ShareAccountNumber 1");
     sa = shareHolder.findShareAccount(1);
     out.println("Printing the details of ShareAccountNumber 1");
     printShareAccount(sa,out);
     out.println("");

     out.println("buying shares 100");
     sa = shareHolder.buyShares(1, 100);
	            
     out.println("Printing the details of ShareAccountNumber 1");
     printShareAccount(sa,out);
     out.println("");

     out.println("selling 50 shares of ShareAccountNumber 1");
     int numberShares = shareHolder.sellShares(1, 50);
     if(numberShares == 50){
       out.println("Printing the details of ShareAccountNumber 1");
       sa = shareHolder.findShareAccount(1);
       printShareAccount(sa,out);
     }
     else if(numberShares == -1){
       out.println("ShareAccountNo can not be found");
     }else {
       out.println("The number shares available are less than 50");
     }
     out.println("");

     List<ShareAccount> saList = shareHolder.listAccounts();
     out.println("Printing all the available accounts");
     for (int i = 0; i < saList.size(); i++){
		out.println("*******");
		printShareAccount(saList.get(i),out);
		out.println("*******");
		out.println("");
	}
     out.println("");

     out.println("Setting the ShareAccount 1 with 500 shares 
                  and updating the database");
     sa = new ShareAccount(1,"phani",0);
     sa.setNumberOfShares(500);
     shareHolder.updateShareAccount(sa);
     out.println("Printing the details of ShareAccountNumber 1");
     printShareAccount(sa,out);
     out.println("");

     out.println("Closing ShareAccountNumber 1");
     sa = shareHolder.close(1);
     if(sa == null){
        out.println("Account is not found="+1);
     }else{
        out.println("Printing the details of ShareAccountNumber 1");
	printShareAccount(sa,out);
     }

   }
   catch(Exception e){
     e.printStackTrace();
     throw new ServletException(e);
   }
}  	

 protected void doPost(HttpServletRequest request, 
                      HttpServletResponse response) 
                  throws ServletException, IOException {
		
 }  
 private void printShareAccount(ShareAccount sa, PrintWriter out){
    if(sa != null){
    out.println("Account Number = "+sa.getShareAccountNo());
    out.println("Owner Name = "+sa.getOwnerName());
    out.println("number of shares "+sa.getNumberOfShares());
    out.println("version="+sa.getVersion());
    }else{
     out.println("ShareAccountNo can not be found");
    }
 }
}