Program: 138342
Project: 138342
Buggy source:
/** 
 * DOC xqliu Comment method "fillDbConnectionInformation".
 * @param dbConn
 * @return
 */
public static DatabaseConnection fillDbConnectionInformation(DatabaseConnection dbConn){
  if (DatabaseConstant.XML_EXIST_DRIVER_NAME.equals(dbConn.getDriverClass())) {
    IXMLDBConnection xmlDBConnection=new EXistXMLDBConnection(dbConn.getDriverClass(),dbConn.getURL());
    ConnectionHelper.addXMLDocuments(xmlDBConnection.createConnection(dbConn));
  }
 else {
    boolean noStructureExists=ConnectionHelper.getAllCatalogs(dbConn).isEmpty() && ConnectionHelper.getAllSchemas(dbConn).isEmpty();
    java.sql.Connection sqlConn=null;
    try {
      if (noStructureExists) {
        Map<String,String> paramMap=ParameterUtil.toMap(ConnectionUtils.createConnectionParam(dbConn));
        IMetadataConnection metaConnection=MetadataFillFactory.getDBInstance().fillUIParams(paramMap);
        dbConn=(DatabaseConnection)MetadataFillFactory.getDBInstance().fillUIConnParams(metaConnection,dbConn);
        sqlConn=(java.sql.Connection)MetadataConnectionUtils.checkConnection(metaConnection).getObject();
        if (sqlConn != null) {
          MetadataFillFactory.getDBInstance().fillCatalogs(dbConn,sqlConn.getMetaData(),MetadataConnectionUtils.getPackageFilter(dbConn,sqlConn.getMetaData()));
          MetadataFillFactory.getDBInstance().fillSchemas(dbConn,sqlConn.getMetaData(),MetadataConnectionUtils.getPackageFilter(dbConn,sqlConn.getMetaData()));
        }
      }
    }
 catch (    SQLException e) {
      log.error(e,e);
    }
 finally {
      if (sqlConn != null) {
        ConnectionUtils.closeConnection(sqlConn);
      }
    }
  }
  return dbConn;
}

Fixed version (ground truth):
/** 
 * DOC xqliu Comment method "fillDbConnectionInformation".
 * @param dbConn
 * @return
 */
public static DatabaseConnection fillDbConnectionInformation(DatabaseConnection dbConn){
  if (DatabaseConstant.XML_EXIST_DRIVER_NAME.equals(dbConn.getDriverClass())) {
    IXMLDBConnection xmlDBConnection=new EXistXMLDBConnection(dbConn.getDriverClass(),dbConn.getURL());
    ConnectionHelper.addXMLDocuments(xmlDBConnection.createConnection(dbConn));
  }
 else {
    boolean noStructureExists=ConnectionHelper.getAllCatalogs(dbConn).isEmpty() && ConnectionHelper.getAllSchemas(dbConn).isEmpty();
    java.sql.Connection sqlConn=null;
    try {
      if (noStructureExists) {
        Map<String,String> paramMap=ParameterUtil.toMap(ConnectionUtils.createConnectionParam(dbConn));
        IMetadataConnection metaConnection=MetadataFillFactory.getDBInstance().fillUIParams(paramMap);
        dbConn=(DatabaseConnection)MetadataFillFactory.getDBInstance().fillUIConnParams(metaConnection,dbConn);
        sqlConn=(java.sql.Connection)MetadataConnectionUtils.checkConnection(metaConnection).getObject();
        if (sqlConn != null) {
          MetadataFillFactory.getDBInstance().fillCatalogs(dbConn,sqlConn.getMetaData(),MetadataConnectionUtils.getPackageFilter(dbConn,sqlConn.getMetaData(),true));
          MetadataFillFactory.getDBInstance().fillSchemas(dbConn,sqlConn.getMetaData(),MetadataConnectionUtils.getPackageFilter(dbConn,sqlConn.getMetaData(),false));
        }
      }
    }
 catch (    SQLException e) {
      log.error(e,e);
    }
 finally {
      if (sqlConn != null) {
        ConnectionUtils.closeConnection(sqlConn);
      }
    }
  }
  return dbConn;
}