This does the trick in my case:
"So you can just work by possitions, and that already works now. There is
no need to specify the type, MyBatis will work fine without that.
Parameters are automapped to param1, param2, param3... So this works right now."
I didn't know this so I guess my problem was actually no problem.
I was not concerned about the names of the parameters but about the signature of the persistence interface, which I need to keep independent from the underlying persistence technology. I'm sorry I didn't understand it when you already gave me the answer:
http://code.google.com/p/mybatis/issues/detail?id=500#c8This means I'll then be asking about #509.
Thank you once again!
El 20/02/12 20:06, Eduardo Macarron escribió:
> I am afraid there is not any doc but feel free to ask specific questions.
>
> Regarding issue #500. I would better discuss it with the rest of the
> users/devs because:
> - it will be hard to implement
> - maybe it will not be accepted
>
> Now we have this:
>
> public interface SomeMapper {
> public SomeClass getWith2Params(@Param("p1") int p1, @Param("p2")
> String p2);
> }
>
> <select id="getWith2Params" resultType="SomeClass">
> SELECT *
> FROM SomeTable
> WHERE p1 = #{p1} AND p2= #{p2}
> </select>
>
> And the purpose is to have this:
>
> public interface SomeMapper {
> public SomeClass getWith2Params(int arg1, String arg2);
> }
>
> <select id="getWith2Params" parameters="int p1; string p2"
> resultType="SomeClass">
> SELECT *
> FROM SomeTable
> WHERE p1 = #{p1} AND p2= #{p2}
> </select>
>
> Not a big gain. Just moved param names from one place o another.
>
> But there are two big problems :)
> 1st. There is no way to get param names by introspection in java. So
> you can just work by possitions, and that already works now. There is
> no need to specify the type, MyBatis will work fine without that.
>
> Parameters are automapped to param1, param2, param3... So this works right now.
>
> public interface SomeMapper {
> public SomeClass getWith2Params(int arg1, String arg2);
> }
>
> <select id="getWith2Params" resultType="SomeClass">
> SELECT *
> FROM SomeTable
> WHERE p1 = #{param1} AND p2= #{param2}
> </select>
>
> The second big problem is that stements just get ONE parameter. When
> using mappers an internal hashmap is automatically created an passed.
>
> Something like:
> Map<String, Object> map = new HashMap();
> map.put(param1, value1)
> map.put(param2, value2)
> session.selectOne(statement, map)
Locked
