java code for Column Formula String Concatenate

"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">














/////////////////////////////////////////////////////////////////////////


import java.io.*;

public class Account {
private String id;
private String accountnum;
private double balance;
private String firstname;
private String lastname;
private String fullname;

public Account() {
}


public void setId(String s) {
id = s;
}

public String getId() {
return id;
}

public void setAccountnum(String s) {
accountnum = s;
}

public String getAccountnum() {
return accountnum;
}

public void setBalance(double b) {
balance = b;
}

public double getBalance() {
return balance;
}

public void setFirstname(String s) {
firstname = s;
}

public String getFirstname() {
return firstname;
}

public void setLastname(String s) {
lastname = s;
}

public String getLastname() {
return lastname;
}

public void setFullname(String s) {
fullname = s;
}

public String getFullname() {
return fullname;
}
}

/////////////////////////////////////////////////////////////////////////


"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">



org.hsqldb.jdbcDriver
jdbc:hsqldb:data/tutorial
sa



1


org.hibernate.dialect.HSQLDialect


true






/////////////////////////////////////////////////////////////////////////

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {

public static final SessionFactory sessionFactory;

static {
try {
// Create the SessionFactory from hibernate.cfg.xml
sessionFactory = new Configuration().configure().buildSessionFactory();
} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}

public static final ThreadLocal session = new ThreadLocal();

public static Session currentSession() throws HibernateException {
Session s = (Session) session.get();
// Open a new Session, if this thread has none yet
if (s == null) {
s = sessionFactory.openSession();
// Store it in the ThreadLocal variable
session.set(s);
}
return s;
}

public static void closeSession() throws HibernateException {
Session s = (Session) session.get();
if (s != null)
s.close();
session.set(null);
}

static Connection conn;
static Statement st;
public static void setup(String sql) {
try {
// Step 1: Load the JDBC driver.
Class.forName("org.hsqldb.jdbcDriver");
System.out.println("Driver Loaded.");
// Step 2: Establish the connection to the database.
String url = "jdbc:hsqldb:data/tutorial";

conn = DriverManager.getConnection(url, "sa", "");
System.out.println("Got Connection.");

st = conn.createStatement();
st.executeUpdate(sql);
} catch (Exception e) {
System.err.println("Got an exception! ");
e.printStackTrace();
System.exit(0);
}
}
public static void checkData(String sql) {
try {
HibernateUtil.outputResultSet(st
.executeQuery(sql));
// conn.close();
} catch (Exception e) {
e.printStackTrace();
}
}

public static void outputResultSet(ResultSet rs) throws Exception{
ResultSetMetaData metadata = rs.getMetaData();

int numcols = metadata.getColumnCount();
String[] labels = new String[numcols];
int[] colwidths = new int[numcols];
int[] colpos = new int[numcols];
int linewidth;

for (int i = 0; i < numcols; i++) {
labels[i] = metadata.getColumnLabel(i + 1); // get its label
System.out.print(labels[i]+" ");
}
System.out.println("------------------------");

while (rs.next()) {
for (int i = 0; i < numcols; i++) {
Object value = rs.getObject(i + 1);
if(value == null){
System.out.print(" ");
}else{
System.out.print(value.toString().trim()+" ");
}

}
System.out.println(" ");
}
}
}


/////////////////////////////////////////////////////////////////////////

import java.io.Serializable;
import java.util.*;

import org.hibernate.*;
import org.hibernate.cfg.*;
import org.hibernate.criterion.*;
import org.hibernate.event.*;
import org.hibernate.event.def.*;

public class Main {
public static void main(String[] args) throws Exception {
HibernateUtil.setup("create table account(id varchar,accountnum varchar,firstname varchar,lastname varchar,balance double);");


Session session = HibernateUtil.currentSession();

Account account = new Account();

account.setFirstname("Joe");
account.setLastname("Smith");
account.setAccountnum("39084");
account.setBalance(4054.00);

session.save(account);
session.flush();

Account account2 = (Account)session.load(Account.class, account.getId());
System.out.println(account2.getFullname());
session.flush();
session.close();
HibernateUtil.checkData("select * from account");
}
}



/////////////////////////////////////////////////////////////////////////

log4j.rootCategory=WARN, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
log4j.appender.stdout.Target=System.out