Using select in constructor/arg ignores that arg in duplicate checks

[FrantaM]

It's similar to Issue 392.
If you have resultMap like:

<resultMap id="postLiteMap2NestedWithSelect" type="domain.blog.BlogLite"> <id column="blog_id" property="id" /> <collection property="posts" ofType="domain.blog.PostLite"> <constructor> <arg javaType="domain.blog.PostLiteId" column="{id=id}" select="selectPostLiteId" /> <arg javaType="_int" column="blog_id"/> </constructor> </collection> </resultMap>

then the arg with select is ignored and posts are unique based on blog_id (which, in this case, is the same). Hence all posts but one are ignored.

[emacarron]

Hi Franta. I have not looked into the code but I imagine that the problem is that "id=id" probably is being taken as a column name. Not sure but for the time being this may work:

 <arg javaType="domain.blog.PostLiteId" column="id" select="selectPostLiteId" />

If it does work, then the bug turns into "composite columns are not correctly handled to create the row key" :)

[FrantaM]

No it makes no difference.
I think the problem is in DefaultResultSetHandler#createRowKeyForMappedProperties. It iterates result mappings but considers only those with result map or without nested query.