private void mergeFields(Row row, Row requiredRow) {
   for (Field field : requiredRow.getFields().toFieldList()) {
     if (!row.containsField(field.getName())) {
       row.getLocalDefinedFields().put(new Field(field));
     }
   }
   LocationUtil.mergeLocationPointers(row.getLocationPointer(), requiredRow.getLocationPointer());
 }
 private String computeErrorMessage(
     Row requiredRow, List<Row> incompatibleRows, String initialErrorMessage) {
   StringBuilder stringBuilder =
       new StringBuilder()
           .append(initialErrorMessage)
           .append("\n")
           .append("\n")
           .append("ligne required :\n");
   requiredRow.getLocationPointer().accept(new LoggerLocationVisitor(stringBuilder));
   stringBuilder.append("\n").append("ligne(s) en conflit :\n");
   for (Row incompatibleRow : incompatibleRows) {
     incompatibleRow.getLocationPointer().accept(new LoggerLocationVisitor(stringBuilder));
   }
   return stringBuilder.toString();
 }
 private void mergeRequiredRow(Table destinationTable, Row requiredRow) {
   boolean thereIsAMerge = false;
   for (Row existingRow : destinationTable.getRows()) {
     if (checker.matchAllFields(requiredRow, existingRow)) {
       LocationUtil.mergeLocationPointers(
           existingRow.getLocationPointer(), requiredRow.getLocationPointer());
       thereIsAMerge = true;
     }
   }
   if (!thereIsAMerge) {
     if (requiredRow.getUniqueKey() == null) {
       destinationTable.addRow(requiredRow);
     } else {
       mergeRequiredRowWithUniqueKey(destinationTable, requiredRow);
     }
   }
 }