Thank you, Guy, you have been a big help!
This is what I came up with. It works, but not as well as I had hoped.
<resultMap type="User" id="userMap">
<constructor>
<idArg column="id" javaType="UserID"
typeHandler="UserIDHandler"/>
<arg column="gender" javaType="Gender"
typeHandler="GenderHandler"/>
<arg column="email" javaType="EmailAddress"
typeHandler="EmailAddressHandler"/>
<arg column="phone" javaType="TelephoneNumber"
typeHandler="TelephoneNumberHandler"/>
<arg column="birth_date" javaType="LocalDate"
typeHandler="LocalDateHandler"/>
<arg column="password_hash" javaType="SHA1"
typeHandler="SHA1Handler"/>
<arg column="avatar_id" javaType="StaticFileID"
typeHandler="StaticFileIDHandler"/>
<arg column="organization_id" javaType="OrganizationID"
typeHandler="OrganizationIDHandler"/>
<arg column="version" javaType="int"/>
</constructor>
<association property="name" javaType="Name">
<constructor>
<arg column="first_name" javaType="String"/>
<arg column="middle_name" javaType="String"/>
<arg column="last_name" javaType="String"/>
<arg column="suffix" javaType="String"/>
</constructor>
</association>
</resultMap>
I was surprised that I had to specify the javaType for every parameter.
Otherwise, iBATIS treated everything as an Object and could not find a
corresponding constructor. I then discovered that iBATIS was looking for an
Integer argument for the version even though I specified the javaType to be
an int. Finally, I had to remove name from the constructor since constructor
tags do not support child association tags.
As a side note, I try to follow the recommendation by Joshua Bloch in
Effective Java to use static factory methods instead of constructors, so I
only have private constructors. I used DefaultObjectFactory as a model to
create my own ObjectFactory that first looks for a matching static factory
method before looking for a constructor.
One of the reasons I chose iBATIS was that Hibernate put too many
constraints on my domain model. It isn't really a POJO if you say it has to
have a public constructor, an empty constructor, and setters for every
property. iBATIS is less strict, but still has some hoops to jump through.
Wouldn't it be nice to have a persistence layer that transparently
accommodated the domain model? What if I wanted to use a separate Factory
class to create my User objects?
I am willing to help make these changes to iBATIS if I am not missing
something that may already be there.
Sincerely,
Dan Forward
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