JOOQ强制类型代码生成

时间:2014-06-01 11:50:12

标签: java postgresql type-conversion jooq

我在使用强制类型生成代码时遇到了一些问题(JOOQ 3.3,Postgres 9.3)。

尝试将sql时间戳转换为joda DateTime,导致编译错误。

我的表:

CREATE TABLE book
(
  // [...]
  date_published timestamp without time zone,
  // [...]
);

和我的.xml配置:

// [...]
<customTypes>
  <customType>
   <name>java.sql.Timestamp</name>
   <converter>com.plannow.jooq.converters.DateTimeConverter</converter>
  </customType>         
</customTypes>
<forcedTypes>
  <forcedType>
   <name>java.sql.Timestamp</name>
   <expression>.*\.date_.*</expression>
   <types>.*</types>
  </forcedType>
</forcedTypes>
// [...]

DateTimeConverter类:

public class DateTimeConverter implements Converter<Timestamp, DateTime>
{

    @Override
    public DateTime from(Timestamp databaseObject)
    {
        return new DateTime(databaseObject);
    }

    @Override
    public Timestamp to(DateTime userObject)
    {
        return new Timestamp(userObject.getMillis());
    }

    @Override
    public Class<Timestamp> fromType()
    {
        return Timestamp.class;
    }

    @Override
    public Class<DateTime> toType()
    {
        return DateTime.class;
    }
}

所以,BOOK.DATE_PUBLISHED就是这样生成的:

public final org.jooq.TableField<com.plannow.jooq.db.tables.records.BookRecord, java.sql.Timestamp> DATE_PUBLISHED = createField("date_published", org.jooq.impl.SQLDataType.TIMESTAMP, this, "", new com.plannow.jooq.converters.DateTimeConverter());

导致编译错误:

Type mismatch: cannot convert from TableField<BookRecord,DateTime> to TableField<BookRecord,Timestamp>.

我知道我可以将DATE_PUBLISHED的类型更改为TableField<BookRecord,DateTime>并重构代码,但我不想手动修补生成的类。

任何想法我做错了什么?

1 个答案:

答案 0 :(得分:3)

<name/>的{​​{1}}元素应引用Converter<T, U><customType/>类型(用户类型),而不是<U>类型(数据库)类型)。所以,如果你这样写:

<T>

然后你真的只是注册<customTypes> <customType> <name>java.sql.Timestamp</name> <converter>com.plannow.jooq.converters.DateTimeConverter</converter> </customType> </customTypes> 。试试这个:

Converter<Timestamp, Timestamp>

请注意,您的转换器也应正确处理<customTypes> <customType> <name>org.joda.time.DateTime</name> <converter>com.plannow.jooq.converters.DateTimeConverter</converter> </customType> </customTypes> 值:

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