code: package it.unibz.inf.vig_mappings_analyzer.core;
  
  import it.unibz.inf.ontop.model.OBDAModel;
  import it.unibz.inf.ontop.sql.DBMetadata;
  
  import org.apache.log4j.Logger;
  
  public abstract class OntopConnection {
      // Parameters
      protected String obdaFile = "resources/npd-v2-ql_a.obda";
  
      // Internal State
      protected DBMetadata meta;
      protected OBDAModel obdaModel;
  
      protected static Logger logger = Logger.getLogger(JoinableColumnsFinder.class.getCanonicalName());
  
      protected OntopConnection(OBDAModel obdaModel, DBMetadata meta) {
  	this.obdaModel = obdaModel;
  	this.meta = meta;
      }
  }
  