12

有一个提供 Hibernate 持久性的 JodaTime 库。最近我开始研究Joda-Money并开始了解如何使用 hibernate 来保持它,但我没有看到任何库。

有什么建议么?

4

6 回答 6

8

由于 Sudarshan 答案中示例的链接已损坏,因此这里是一个简单的自定义用户类型的实现org.joda.money.BigMoney,它将货币对象保留在两列金额和货币中)以及如何使用它的示例。它对org.joda.money.Money.

package test;

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.apache.commons.lang.ObjectUtils;
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;
import org.joda.money.BigMoney;
import org.joda.money.CurrencyUnit;

public class MoneyUserType implements CompositeUserType
{
    private static final String[] PROPERTY_NAMES = {"amount", "currencyUnit"};
    private static final Type[] PROPERTY_TYPES = {StandardBasicTypes.BIG_DECIMAL, StandardBasicTypes.CURRENCY};

    public MoneyUserType()
    {
        super();
    }

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

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

    public String[] getPropertyNames()
    {
        return PROPERTY_NAMES.clone();
    }

    public Type[] getPropertyTypes()
    {
        return PROPERTY_TYPES.clone();
    }

    public Object getPropertyValue(final Object component, final int property) throws HibernateException
    {
        BigMoney money = (BigMoney) component;
        return (property == 0) ? money.getAmount() : money.getCurrencyUnit().toCurrency();
    }

    public Object nullSafeGet(final ResultSet rs, final String[] names, final SessionImplementor session,
    final Object owner) throws HibernateException, SQLException
    {
        BigDecimal amount = StandardBasicTypes.BIG_DECIMAL.nullSafeGet(rs, names[0], session);
        Currency currency = StandardBasicTypes.CURRENCY.nullSafeGet(rs, names[1], session);
        return BigMoney.of(CurrencyUnit.of(currency), amount);
    }

    public void nullSafeSet(final PreparedStatement st, final Object value, final int index,
    final SessionImplementor session) throws HibernateException, SQLException
    {
        BigMoney money = (BigMoney) value;
        BigDecimal amount = (money == null) ? null : money.getAmount();
        Currency currency = (money == null) ? null : money.getCurrencyUnit().toCurrency();

        StandardBasicTypes.BIG_DECIMAL.nullSafeSet(st, amount, index, session);
        StandardBasicTypes.CURRENCY.nullSafeSet(st, currency, index + 1, session);
    }

    public Object replace(final Object original, final Object target, final SessionImplementor session,
    final Object owner) throws HibernateException
    {
        return deepCopy(original);
    }

    public void setPropertyValue(final Object component, final int property, final Object value)
    throws HibernateException
    {
        throw new HibernateException("Money is immutable.");
    }

    public Object deepCopy(final Object value) throws HibernateException
    {
        return (value != null) ? BigMoney.of(((BigMoney) value).getCurrencyUnit(),
        ((BigMoney) value).getAmount()) : null;
    }

    public boolean equals(final Object x, final Object y) throws HibernateException
    {
        return ObjectUtils.equals(x, y);
    }

    public int hashCode(final Object x) throws HibernateException
    {
        return ObjectUtils.hashCode(x);
    }

    public boolean isMutable()
    {
        return false;
    }

    public Class<?> returnedClass()
    {
        return BigMoney.class;
    }
}

用法:

@Type(type = "test.MoneyUserType")
@Columns(columns = {@Column(name = "AMOUNT"), @Column(name = "CURRENCY")})
private BigMoney money;
于 2013-05-15T15:05:15.440 回答
5

用户类型项目包括 Joda Money 支持。

于 2012-01-18T11:37:11.823 回答
4

用户类型项目从 3.0.0 版本开始提供对 joda-money 0.6 的支持。但是请注意,这需要Hibernate 4。当前的 joda-money 版本也是 0.8

如果您想将它与 Hibernate 3 一起使用,请使用 Sudarshan anwser 中的示例(在撰写本文时它已被窃听)。

于 2013-02-18T19:37:26.597 回答
4

好的,我接受了您的建议,并为 Joda 库中定义的 Money 制作了一个自定义类型,作为参考,人们可以在此处查找它,在此处使用并在此处测试自定义类型

于 2012-02-24T12:07:13.643 回答
4

基于 http://jadira.sourceforge.net

货币类型通常由货币和金额组成。Jadira 可以使用参数配置的货币仅将金额存储到数据库中。例如:

@Column
@Type(type = "org.jadira.usertype.moneyandcurrency.joda.PersistentMoneyAmount",
    parameters = {@org.hibernate.annotations.Parameter(name = "currencyCode", value = "USD")})
private Money money;

Alternatively, with other types two columns to hold the amount an currency:

@Columns(columns = { @Column(name = "MY_CURRENCY"), @Column(name = "MY_AMOUNT") })
@Type(type = "org.jadira.usertype.moneyandcurrency.joda.PersistentMoneyAmountAndCurrency")
private Money money;
于 2014-09-11T01:43:05.960 回答
1

Joda-Money 非常新,所以没有人为其提供 Hibernate 映射也就不足为奇了。

但是,编写自定义 Hibernate 类型适配器非常简单。如果您查看 JodaTime 适配器的源代码,您会发现它们非常简单。有关如何编写自己的文档,请参阅文档。

于 2011-11-27T19:19:34.920 回答