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Posted to user-java@ibatis.apache.org by Anthony Hong <an...@gmail.com> on 2006/06/11 13:01:47 UTC
Does sqlmap support polymorphism in result-map
I have a set of class with generlization relationship. They are saved
in one table with a type field to sepreate which type they are.
How can I fetch them with the help of ibatis result map to construct
properly class with type field help
Say, If type = 1, then create Class A
if type = 2, then create Class B
Can this be achieved in ibatis result-map support?
Thanks in advance
--
Anthony Hong
Re: Does sqlmap support polymorphism in result-map
Posted by Gilles Bayon <ib...@gmail.com>.
>From unit test
<resultMap id="document" class="testdomain.Document">
<result property="id" column="DOCUMENT_ID"/>
<result property="title" column="DOCUMENT_TITLE"/>
<result property="type" column="DOCUMENT_TYPE"/>
<discriminator column="DOCUMENT_TYPE" javaType="string" >
<subMap value="Book" resultMap="book"/>
<subMap value="Newspaper" resultMap="news"/>
</discriminator>
</resultMap>
<resultMap id="book" class="testdomain.Book" extends="document">
<result property="pages" column="DOCUMENT_PAGENUMBER"/>
</resultMap>
<resultMap id="news" class="testdomain.Magazine" extends="document">
<result property="city" column="DOCUMENT_CITY"/>
</resultMap>
<select id="getDocuments" resultMap="document">
select * from DOCUMENTS
</select>
Re: Does sqlmap support polymorphism in result-map
Posted by Anthony Hong <an...@gmail.com>.
Any example or links can be provides?
I cannot find it through ibatis developer guideline and sqlmap
document to descibe how to use it.
Thanks.
On 6/11/06, Gilles Bayon <ib...@gmail.com> wrote:
>
> Yes, use discriminator tag in Result-Map.
>
> -Gilles
>
>
--
Anthony Hong
Re: Does sqlmap support polymorphism in result-map
Posted by Gilles Bayon <ib...@gmail.com>.
Yes, use discriminator tag in Result-Map.
-Gilles