Hibernate example source code file (MonetaryAmountUserType.java)

This example Hibernate source code file (MonetaryAmountUserType.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Hibernate tags/keywords

bigdecimal, currency, hibernateexception, hibernateexception, io, jdbc, math, monetaryamount, monetaryamount, object, object, serializable, sessionimplementor, sessionimplementor, sql, sqlexception, string, type, util

The Hibernate MonetaryAmountUserType.java source code

//$Id$
package org.hibernate.test.annotations.entity;

import java.io.Serializable;
import java.math.BigDecimal;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Currency;

import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.type.StandardBasicTypes;
import org.hibernate.type.Type;
import org.hibernate.usertype.CompositeUserType;

/**
 * @author Emmanuel Bernard
 */
public class MonetaryAmountUserType implements CompositeUserType {

	public String[] getPropertyNames() {
		return new String[]{"amount", "currency"};
	}

	public Type[] getPropertyTypes() {
		return new Type[]{ StandardBasicTypes.BIG_DECIMAL, StandardBasicTypes.CURRENCY };
	}

	public Object getPropertyValue(Object component, int property) throws HibernateException {
		MonetaryAmount ma = (MonetaryAmount) component;
		return property == 0 ? ma.getAmount() : ma.getCurrency();
	}

	public void setPropertyValue(Object component, int property, Object value)
			throws HibernateException {
		MonetaryAmount ma = (MonetaryAmount) component;
		if ( property == 0 ) {
			ma.setAmount( (BigDecimal) value );
		}
		else {
			ma.setCurrency( (Currency) value );
		}
	}

	public Class returnedClass() {
		return MonetaryAmount.class;
	}

	public boolean equals(Object x, Object y) throws HibernateException {
		if ( x == y ) return true;
		if ( x == null || y == null ) return false;
		MonetaryAmount mx = (MonetaryAmount) x;
		MonetaryAmount my = (MonetaryAmount) y;
		return mx.getAmount().equals( my.getAmount() ) &&
				mx.getCurrency().equals( my.getCurrency() );
	}

	public int hashCode(Object x) throws HibernateException {
		return ( (MonetaryAmount) x ).getAmount().hashCode();
	}

	public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner)
			throws HibernateException, SQLException {
		BigDecimal amt = StandardBasicTypes.BIG_DECIMAL.nullSafeGet( rs, names[0], session);
		Currency cur = StandardBasicTypes.CURRENCY.nullSafeGet( rs, names[1], session );
		if ( amt == null ) return null;
		return new MonetaryAmount( amt, cur );
	}

	public void nullSafeSet(
			PreparedStatement st, Object value, int index,
			SessionImplementor session
	) throws HibernateException, SQLException {
		MonetaryAmount ma = (MonetaryAmount) value;
		BigDecimal amt = ma == null ? null : ma.getAmount();
		Currency cur = ma == null ? null : ma.getCurrency();
		StandardBasicTypes.BIG_DECIMAL.nullSafeSet( st, amt, index, session );
		StandardBasicTypes.CURRENCY.nullSafeSet( st, cur, index + 1, session );
	}

	public Object deepCopy(Object value) throws HibernateException {
		MonetaryAmount ma = (MonetaryAmount) value;
		return new MonetaryAmount( ma.getAmount(), ma.getCurrency() );
	}

	public boolean isMutable() {
		return true;
	}

	public Serializable disassemble(Object value, SessionImplementor session)
			throws HibernateException {
		return (Serializable) deepCopy( value );
	}

	public Object assemble(Serializable cached, SessionImplementor session, Object owner)
			throws HibernateException {
		return deepCopy( cached );
	}

	public Object replace(Object original, Object target, SessionImplementor session, Object owner)
			throws HibernateException {
		return deepCopy( original ); //TODO: improve
	}

}