[jira] Commented: (IBATIS-115) automapping and/or ignoreMissingColumns

["chris marx (JIRA)" <ib...@incubator.apache.org>]

    [ https://issues.apache.org/jira/browse/IBATIS-115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12615656#action_12615656 ] 

chris marx commented on IBATIS-115:
-----------------------------------

why not just stick with extends?

> automapping and/or ignoreMissingColumns
> ---------------------------------------
>
>                 Key: IBATIS-115
>                 URL: https://issues.apache.org/jira/browse/IBATIS-115
>             Project: iBatis for Java
>          Issue Type: New Feature
>          Components: SQL Maps
>    Affects Versions: 2.0.9b
>            Reporter: ow
>         Attachments: ignore-missing-cols.zip
>
>
> This was requested about a year ago. Somewhat similar to what Ruby-on-Rails does.
> http://sourceforge.net/forum/forum.php?thread_id=1110825&forum_id=206694
> By: Clinton Begin - cbeginProject Admin
> RE: Same name property/column automapping  
> 2004-07-15 16:29
> This has been discussed before, and so has the inverse. That is, not all columns in the result map need be present in the db result set. The biggest argument against this is performance, as it requires accessing the DB metadata, possibly EVERY time a query is run. However, I don't have too much problem with it if it is optional. I would sooner see a syntax something like: 
>  
> <!-- FORCES AUTOMAP OF ALL REMAINING COLUMNS --> 
>  
> <resultMap id=”get-product-result” class=”com.ibatis.example.Product” autoMapRemaining="true"> 
> <result property=”id” 
> column=”ID_THAT_NEEDS_TO_BE_REMAPPED”/> 
> <result property=”category” column=”categoryId” select=”getCategory”/> 
> </resultMap> 
>  
> <!-- RELAXES REQUIREMENT THAT ALL COLUMNS MUST BE PRESENT --> 
>  
> <resultMap id=”get-product-result” class=”com.ibatis.example.Product”> 
> <result property=”description” column=”DESC” optional="true" /> 
> ... 
> </resultMap> 
>  
> <!-- OR --> 
>  
> <resultMap id=”get-product-result” class=”com.ibatis.example.Product” ignoreMissingColumns="true"> 
> ... 
> </resultMap> 

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