de.rs.hibernate.MoneyType.java Source code

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Here is the source code for de.rs.hibernate.MoneyType.java

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/*
 * Copyright (C) 2014  Robert Stark
 * 
 * This program is free software; you can redistribute it and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with this program;
 * if not, see <http://www.gnu.org/licenses/>.
 */
package de.rs.hibernate;

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.BigDecimalType;
import org.hibernate.type.CurrencyType;
import org.hibernate.type.Type;
import org.hibernate.usertype.CompositeUserType;

public class MoneyType implements CompositeUserType {

    @Override
    public String[] getPropertyNames() {
        // ORDER IS IMPORTANT!  it must match the order the columns are defined in the property mapping
        return new String[] { "amount", "currency" };
    }

    @Override
    public Type[] getPropertyTypes() {
        return new Type[] { BigDecimalType.INSTANCE, CurrencyType.INSTANCE };
    }

    @Override
    public Object getPropertyValue(Object component, int propertyIndex) throws HibernateException {
        if (component == null) {
            return null;
        }

        final Money money = (Money) component;
        switch (propertyIndex) {
        case 0: {
            return money.getAmount();
        }
        case 1: {
            return money.getCurrency();
        }
        default: {
            throw new HibernateException("Invalid property index [" + propertyIndex + "]");
        }
        }
    }

    @Override
    public void setPropertyValue(Object component, int propertyIndex, Object value) throws HibernateException {
        if (component == null) {
            return;
        }

        final Money money = (Money) component;
        switch (propertyIndex) {
        case 0: {
            money.setAmount((BigDecimal) value);
            break;
        }
        case 1: {
            money.setCurrency((Currency) value);
            break;
        }
        default: {
            throw new HibernateException("Invalid property index [" + propertyIndex + "]");
        }
        }
    }

    @Override
    public Class<?> returnedClass() {
        return Money.class;
    }

    @Override
    public boolean equals(Object x, Object y) throws HibernateException {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public int hashCode(Object x) throws HibernateException {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner)
            throws HibernateException, SQLException {
        assert names.length == 2;
        BigDecimal amount = BigDecimalType.INSTANCE.fromString(names[0]); // already handles null check
        Currency currency = CurrencyType.INSTANCE.fromString(names[1]); // already handles null check
        return amount == null && currency == null ? null : new Money(amount, currency);
    }

    @Override
    public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session)
            throws HibernateException, SQLException {
        if (value == null) {
            BigDecimalType.INSTANCE.set(st, null, index, session);
            CurrencyType.INSTANCE.set(st, null, index + 1, session);
        } else {
            final Money money = (Money) value;
            BigDecimalType.INSTANCE.set(st, money.getAmount(), index, session);
            CurrencyType.INSTANCE.set(st, money.getCurrency(), index + 1, session);
        }
    }

    /* (non-Javadoc)
     * @see org.hibernate.usertype.CompositeUserType#deepCopy(java.lang.Object)
     */
    @Override
    public Object deepCopy(Object value) throws HibernateException {
        // TODO Auto-generated method stub
        return null;
    }

    /* (non-Javadoc)
     * @see org.hibernate.usertype.CompositeUserType#isMutable()
     */
    @Override
    public boolean isMutable() {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see org.hibernate.usertype.CompositeUserType#disassemble(java.lang.Object, org.hibernate.engine.spi.SessionImplementor)
     */
    @Override
    public Serializable disassemble(Object value, SessionImplementor session) throws HibernateException {
        // TODO Auto-generated method stub
        return null;
    }

    /* (non-Javadoc)
     * @see org.hibernate.usertype.CompositeUserType#assemble(java.io.Serializable, org.hibernate.engine.spi.SessionImplementor, java.lang.Object)
     */
    @Override
    public Object assemble(Serializable cached, SessionImplementor session, Object owner)
            throws HibernateException {
        // TODO Auto-generated method stub
        return null;
    }

    /* (non-Javadoc)
     * @see org.hibernate.usertype.CompositeUserType#replace(java.lang.Object, java.lang.Object, org.hibernate.engine.spi.SessionImplementor, java.lang.Object)
     */
    @Override
    public Object replace(Object original, Object target, SessionImplementor session, Object owner)
            throws HibernateException {
        // TODO Auto-generated method stub
        return null;
    }

}