(newbie) Query a given datasource from a javascript flow?

[ypomonh]

I'm searching an easy way to query a given datasource (defined in) from 
within a flow (javascript). Not using an ORM framework but even plain JDBC.

Have tried to use 
org.apache.cocoon.components.flow.javascript.ScriptableConnection:

   
importPackage(Packages.org.apache.cocoon.components.flow.javascript.ScriptableConnection);
  
   var db = Database.getConnection("mydatasource");
   var queryVal = cocoon.parameters["rid"];
   var startRow = 0;
   var maxRows = 100;

    row = db.query("select * from report_parameter_map where report_id 
= ?", queryVal, startRow, maxRows);
    print (row.rowCount);

but get : "'Database' is not defined" ?

Is there a simpler way to query a given datasource from within a flow 
(javascript)?


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