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From Ben Munat <b...@munat.com>
Subject Re: HashMap of Lists of HashMaps
Date Fri, 10 Feb 2006 17:52:18 GMT
Even better...

b

Nathan Maves wrote:
> 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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