Hi Chandni,
to accept parameters, the WHERE part of the query has to look like this:
WHERE version_name=$version AND d.parent=$parent
And the code where you are setting the parameters - like this
(without a '$', just the name):
Map params = new HashMap();
params.put("version","Student_Example1");
params.put("parent","<Fact-107>");
Cheers,
Andrus
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On May 3, 2006, at 12:52 PM, Chandni Jain wrote:
> Hello,
>
>
>
> I am trying to use Cayenee to connect to mysql database. I wanted
> to create
> a parameterized query and store it in DataMap so I can reuse the
> query.
> Please can you tell me how I should specify the query and how do I
> map the
> parameters.
>
> Currently this is what I am doing:
>
> In the datamap
>
> <query name="ParamDecompQuery"
> factory="org.objectstyle.cayenne.map.SQLTemplateBuilder" root="obj-
> entity"
> root-name="DesignModule">
>
> <sql
> adapter-class="org.objectstyle.cayenne.dba.mysql.MySQLAdapter"><!
> [CDATA[SELE
> CT m.* FROM
>
> design_module m
>
> JOIN design_modulerefinementrelation d ON m.`factid`=d.child AND
> m.version=d.version
>
> JOIN __versions__ v ON m.version=v.id
>
> WHERE version_name=? AND d.parent=?]]></sql>
>
> </query>
>
>
>
> In the java code
>
>
>
> SQLTemplate DecomParamQuery = (SQLTemplate)
> context.getEntityResolver().lookupQuery("ParamDecompQuery");
>
> Map params = new HashMap();
>
> params.put("$version","Student_Example1");
>
> params.put("$parent","<Fact-107>");
>
> SQLTemplate newDecomParamQuery =
> DecomParamQuery.queryWithParameters(params);
>
>
>
> When I try to run the application I get an error that the parameter
> 1 is not
> set. If I use $ version instead on '?' in data map I get an error
> on invalid
> column name.
>
>
>
> Chandni
>
>
>
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