Pentaho data source access from Groovy - groovy

Question

In Pentaho Report Designer (PRD), I want to connect to my Data source using a Groovy script (or EMCAScript script) by referring to JNDI created in default.properties file. So, I will create a mult-value list parameter containing JNDI names and connect to the data source based on the JNDI selected in the parameter.
Script:
import groovy.sql.Sql
import javax.naming.InitialContext
import javax.sql.DataSource
class SqlClient {
InitialContext context = new InitialContext()
DataSource dataSource = context.lookup("OLTP") as DataSource
def sql = new Sql(dataSource)
sql.execute("SELECT * FROM Person.User_JNDI")
TypedTableModel model = new TypedTableModel();
while(sql.next())
model.addRow(new Object [] {rs.getString(1)});
c.close();
return model;
}
I am getting the following error:
Caused by: org.apache.bsf.BSFException: exception from Groovy: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
expression: 11: unexpected token: sql # line 11, column 5.
sql.execute("SELECT * FROM Person.User_JNDI")
Also, PRD expects the script to return a model, probably something to do with TypedtableModel class.
Can anyone give me an example of Groovy script?

Answer 1

Assuming that you have filled the default.properties as it says here, you should be able to access the data source with something like:
import groovy.sql.Sql
import javax.naming.InitialContext
import javax.sql.DataSource
class SqlClient {
InitialContext context = new InitialContext()
DataSource dataSource = context.lookup("SampleData") as DataSource
def sql = new Sql(dataSource)
sql.execute '''
select * from ... '''
...
}
Using a Sql instance.