Well, glad that it works...Personally, I wouldn't expect that to be a cross-DB friendly solution,
nor does it seem to be the "least astonishing method" of accomplishing the goal. But hey,
if you're cool with it, that's what matters I guess.
-D
-----Original Message-----
From: Collin Peters [mailto:cadiolis@gmail.com]
Sent: Thursday, March 15, 2007 10:22 AM
To: user-java@ibatis.apache.org
Subject: Re: Understanding stored procedure return types
I just tried this and it works (I am using PostgreSQL where you can
use SELECT syntax to execute some SPs)
<parameterMap id="createUserParam" class="UserVO">
<parameter property="userID" />
<parameter property="enterpriseID" />
<parameter property="username" />
<parameter property="password" />
<parameter property="firstName" />
<parameter property="lastName" />
</parameterMap>
<resultMap id="hashMapResult" class="java.util.HashMap">
<result property="result" column="result" />
</resultMap>
<select id="createUser" parameterMap="createUserParam"
resultMap="hashMapResult">
SELECT save_member_basic as result
FROM save_member_basic(?, ?, ?, ?, ?, ?);
</select
On 3/15/07, Dave Rodenbaugh <drodenbaugh@wildbluecorp.com> wrote:
> That's a question for the authors. I found this way to be the only one that worked to
invoke SPs. The docs pretty much spell it out that way.
>
> I'm not sure how you'd invoke the SP in a <select> tag anyhow, since the select
is supposed to map into JDBC as a PreparedStatement. SPs are special in that they must be
called as CallableStatements, so I'm guessing that's the reason for two distinct tags (procedure
vs. select).
>
> If your SP is just doing a select anyhow, why are you using an SP? :)
>
> -D
>
> -----Original Message-----
> From: Collin Peters [mailto:cadiolis@gmail.com]
> Sent: Thursday, March 15, 2007 9:44 AM
> To: user-java@ibatis.apache.org
> Subject: Re: Understanding stored procedure return types
>
> Thanks Dave. I now understand what must be done to accomplish this,
> but I still don't understand why it needs to be done this way. Is it
> considered bad practice to execute a stored procedures as a <select>?
> This seems much more efficient to me as I can take advantage of
> sending a VO as a parameter without having to create custom classes
> for each stored proc.
>
> On 3/15/07, Dave Rodenbaugh <drodenbaugh@wildbluecorp.com> wrote:
> > Hi Collin,
> >
> > I struggled with this for a bit as well...Here's how we're doing it (and it works,
which is always a bonus).
> >
> > SQLMap fragment:
> >
> > <parameterMap id='paramPartnerReferenceUnique' class='map'>
> > <parameter property='returnvaluecolumn' jdbcType='VARCHAR' javaType='java.lang.String'
mode='OUT'/>
> > <parameter property='partnerSystemIdIn' jdbcType='VARCHAR' javaType='java.lang.String'
mode='IN'/>
> > <parameter property='partnerReferenceIdIn' jdbcType='VARCHAR' javaType='java.lang.String'
mode='IN'/>
> > <parameter property='trackingTypeIdIn' jdbcType='NUMERIC' javaType='java.lang.Long'
mode='IN'/>
> > </parameterMap>
> > <procedure id='partnerReferenceUnique' parameterMap='paramPartnerReferenceUnique'>
> > {call ?:= CDS_OWNER.ORDSVC_APP.PARTNER_REFERENCE_UNIQUE(?, ?, ?)}
> > </procedure>
> >
> > Java invocation:
> >
> > HashMap<String, Object> paramMap = new HashMap<String, Object>();
> > paramMap.put("returnvaluecolumn", new String());
> > paramMap.put("partnerSystemIdIn", partnerSystemIdIn);
> > paramMap.put("partnerReferenceIdIn", partnerReferenceIdIn);
> > paramMap.put("trackingTypeIdIn", trackingTypeIdIn);
> >
> > //Invoke the SP
> > queryForObject("partnerReferenceUnique", paramMap);
> > return (java.lang.String)paramMap.get("returnvaluecolumn");
> >
> > There's nothing magic in 'returnvaluecolumn'--that's just a name we picked to be
obvious. No need for ResultMap stuff, since there's only one value coming back...
> >
> > Hope that helps,
> > -Dave
> >
> > -----Original Message-----
> > From: Collin Peters [mailto:cadiolis@gmail.com]
> > Sent: Wednesday, March 14, 2007 6:16 PM
> > To: user-java@ibatis.apache.org
> > Subject: Understanding stored procedure return types
> >
> > Hi all,
> >
> > I am trying to figure out return types in stored procedures. I am
> > using PostgreSQL and have a simple function called saveUser. Here is
> > the important parts of the stored procedure:
> >
> > CREATE OR REPLACE FUNCTION save_member_basic(in_user_id integer,
> > in_enterprise_id integer, in_username text, in_password text,
> > in_firstname text, in_lastname text)
> > RETURNS integer AS
> > $BODY$
> > DECLARE
> >
> > <snip>...
> >
> > return _user_id;
> >
> > END
> > $BODY$
> > LANGUAGE 'plpgsql' VOLATILE;
> >
> > So it is a stored procedure that has 6 arguments, and a single integer
> > return value. I have been able to successfully call the function with
> > this sqlmap:
> >
> > <typeAlias alias="UserVO" type="ca.mcrt.intouch.objects.UserVO" />
> >
> > <resultMap id="userResult" class="UserVO" >
> > <result property="userID" column="user_id"/>
> > <result property="enterpriseID" column="enterprise_id"/>
> > <result property="firstName" column="firstname"/>
> > <result property="lastName" column="lastname"/>
> > <result property="username" column="username"/>
> > <result property="password" column="password"/>
> > </resultMap
> >
> > <parameterMap id="params-createUser" class="UserVO" >
> > <parameter property="userID" jdbcType="integer" mode="IN"/>
> > <parameter property="enterpriseID" jdbcType="integer" mode="IN"/>
> > <parameter property="username" jdbcType="text" mode="IN"/>
> > <parameter property="password" jdbcType="text" mode="IN"/>
> > <parameter property="firstName" jdbcType="text" mode="IN"/>
> > <parameter property="lastName" jdbcType="text" mode="IN"/>
> > </parameterMap>
> >
> > <procedure id="createUser" parameterMap="params-createUser" resultClass="int"
>
> > { call save_member_basic(?, ?, ?, ?, ?, ?) }
> > </procedure
> >
> > So this successfully calls the stored procedure, but seems to ignore
> > the 'resultClass="int"' attribute. So reading up on things I see it
> > should look like:
> > { ? = call save_member_basic(?, ?, ?, ?, ?, ?) }
> > But this seems to mean I need to have an extra value in my
> > parameterMap, which would then mean I won't be able to send in my
> > UserVO class as the parameter. Unless I add a return value variable
> > to it or something. This seems to be a backwards way of doing things.
> >
> > How come I can't use a resultClass with the procedure tag? Something
> > to do with being locked into how JDBC does it? This concept of an
> > INOUT parameter is a bit foreign to me, I have never created a stored
> > procedure where the parameters matched the return value. I can see
> > the value in that, but it doesn't apply to this situation.
> >
> > Collin
> >
> > --
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> >
>
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