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From Nathan Maves <Nathan.Ma...@Sun.COM>
Subject Re: HashMap of Lists of HashMaps
Date Fri, 10 Feb 2006 17:32:26 GMT
For sure!

How about POJO :)

On Feb 10, 2006, at 9:44 AM, Ben Munat wrote:

> Ooh, that's a very overloaded use of the acronym "DOM". Most people  
> would think "Document Object Model". You might call it a JavaBean  
> instead... heh, though that has its own perils. ;-)
>
> Anyway, I take it the problem is that the resultMap is working with  
> the JavaBeans (A and AA) but not with HashMap. What's the error,  
> Stefan?
>
> b
>
> Nils Winkler wrote:
>> Domain Object Model...
>> On Fri, 10 Feb 2006 08:06:28 -0700, "Larry Meadors"
>> <lmeadors@apache.org> said:
>>> What do you mean by DOM?
>>>
>>> Larry
>>>
>>>
>>> On 2/9/06, Ext_Friedrich, Stefan <Stefan.Friedrich@sungard.de>  
>>> wrote:
>>>
>>>>
>>>> Hello.
>>>>
>>>> We encountered a little problem that we are not able to solve by  
>>>> ourselves:
>>>>
>>>> What we want to do is: Use HashMaps instead of DOM in the  
>>>> resultMapping.
>>>> Here's a sample of what we want to do:
>>>>
>>>> <resultMap id="a" class="java.util.HashMap">
>>>>        <result property="aa" select="loadAA"/>
>>>>        <result property="id" column="id"/>
>>>> </resultMap>
>>>> <select id="loadA" resultMap="a">
>>>>        Select id from tableA where id = 1
>>>> </select>
>>>>
>>>> <resultMap id="aa" class="java.util.HashMap">
>>>>        <result property="id" column="id"/>
>>>> </resultMap>
>>>> <select id="loadAA" resultMap="aa">
>>>>        Select id from tableA
>>>> </select>
>>>>
>>>> The first select returns one result --> a HashMap, the second  
>>>> select returns
>>>> numerous results --> n HashMaps that should be mapped as a List  
>>>> of HashMaps.
>>>>
>>>> When we implement it as a DOM and exchange the classes in the  
>>>> resultMaps
>>>> with the ones below, the same code works fine:
>>>>
>>>> class A {
>>>>        private Collection aa;
>>>>        private int id;
>>>>        //getters and setters
>>>> }
>>>>
>>>> class AA {
>>>>        private int id;
>>>> }
>>>>
>>>> Is there a solution for our problem, because we want to avoid  
>>>> the use of a
>>>> DOM due to flexibility-reasons
>>>>
>>>> Thanks
>>>> Stefan Friedrich
>> --
>> ==================================
>> nils@nilswinkler.com


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