Connect to SAP with Groovy

import com.sap.mw.jco.*
import org.junit.*

// This is merely a run test which should pass for any successful SAP connection

// The idea is to retrieve the field system id by calling the function module TR_SYS_PARAMS
// The result should of course be identical to the SystemID of the connection itself.

// When using SAP JCo with Groovy, you will need sapjco.jar and, beside it, also jdsr.jar !!!
// The reason is an internal method lookup which needs to resolve such a reference:
// It's precisely the problem reported here: http://jira.codehaus.org/browse/GROOVY-2980

// As always with JCo, the librfc32.dll must be available in one of the PATH directories

// You will find all these libraries in a SAP Frontend installation ( search in C:\Program Files\SAP )

class TestSapGroovyConnect {

  JCO.Client conn;
  JCO.Repository repo;

  @Test void test() {
    JCO.Function getSysParams = repo.getFunctionTemplate( "TR_SYS_PARAMS" ).getFunction();
    conn.execute getSysParams
    assert getSysParams.getExportParameterList().getValue( "SYSTEMNAME" ) ==
           conn.getAttributes().getSystemID()
    }

  @Before
  void setup() {
// Maintain logon data in a Properties file, as documented in
// http://help.sap.com/javadocs/NW04/current/jc/com/sap/mw/jco/JCO.html
    def sys = new Properties()
    sys.load( new FileInputStream( "h:\\Eigene Dateien\\groovy\\jco\\d12.properties" ) )
    conn = JCO.createClient( sys )
    conn.connect()
    repo = new JCO.Repository( "repo", conn );

    }

  @After
  void teardown() {
    conn.disconnect()
    }

}