Program: 131873
Project: 131873
Buggy source:
@Override public Object executeTransform(final Object input){
  line++;
  if (skipFrom > -1) {
    if (skipTo > -1) {
      if (line >= skipFrom && line <= skipTo)       return null;
    }
 else     if (line >= skipFrom)     return null;
  }
  log(OETLProcessor.LOG_LEVELS.DEBUG,"String_Node_Str",input);
  final List<String> fields=OStringSerializerHelper.smartSplit(input.toString(),new char[]{separator},0,-1,false,false,false,false);
  if (columnNames == null) {
    if (!columnsOnFirstLine)     throw new OTransformException(getName() + "String_Node_Str");
    columnNames=fields;
    for (int i=0; i < columnNames.size(); ++i)     columnNames.set(i,getCellContent(columnNames.get(i)));
    return null;
  }
  final ODocument doc=new ODocument();
  for (int i=0; i < columnNames.size() && i < fields.size(); ++i) {
    final String fieldName=columnNames.get(i);
    Object fieldValue=null;
    try {
      final String fieldStringValue=getCellContent(fields.get(i));
      final OType fieldType=columnTypes != null ? columnTypes.get(i) : null;
      if (fieldType != null && fieldType != OType.ANY) {
        fieldValue=getCellContent(fieldStringValue);
        try {
          fieldValue=OType.convert(fieldValue,fieldType.getDefaultJavaType());
          doc.field(fieldName,fieldValue);
        }
 catch (        Exception e) {
          processor.getStats().incrementErrors();
          log(OETLProcessor.LOG_LEVELS.ERROR,"String_Node_Str",processor.getExtractor().getProgress(),fieldName,i,fieldValue,fieldValue.getClass().getName(),fieldType);
        }
      }
 else       if (fieldStringValue != null && !fieldStringValue.isEmpty()) {
        final char firstChar=fieldStringValue.charAt(0);
        if (Character.isDigit(firstChar)) {
          DateFormat df=new SimpleDateFormat("String_Node_Str");
          df.setLenient(true);
          try {
            fieldValue=df.parse(fieldStringValue);
          }
 catch (          ParseException pe) {
            try {
              if (fieldStringValue.contains("String_Node_Str") || fieldStringValue.contains("String_Node_Str")) {
                String numberAsString=fieldStringValue.replaceAll("String_Node_Str","String_Node_Str");
                fieldValue=new Float(numberAsString);
                if (!isFinite((Float)fieldValue)) {
                  fieldValue=new Double(numberAsString);
                }
              }
 else               try {
                fieldValue=new Integer(fieldStringValue);
              }
 catch (              Exception e) {
                fieldValue=new Long(fieldStringValue);
              }
            }
 catch (            NumberFormatException nf) {
              fieldValue=fieldStringValue;
            }
          }
        }
 else         fieldValue=fieldStringValue;
        if (nullValue != null && nullValue.equals(fieldValue))         continue;
        doc.field(fieldName,fieldValue);
      }
    }
 catch (    Exception e) {
      processor.getStats().incrementErrors();
      log(OETLProcessor.LOG_LEVELS.ERROR,"String_Node_Str",fieldName,fieldValue,e.toString());
    }
  }
  log(OETLProcessor.LOG_LEVELS.DEBUG,"String_Node_Str",doc);
  return doc;
}

Fixed version (ground truth):
@Override public Object executeTransform(final Object input){
  if (skipTransform())   return null;
  log(OETLProcessor.LOG_LEVELS.DEBUG,"String_Node_Str",input);
  final List<String> fields=OStringSerializerHelper.smartSplit(input.toString(),new char[]{separator},0,-1,false,false,false,false);
  if (!isColumnNamesCorrect(fields))   return null;
  final ODocument doc=new ODocument();
  for (int i=0; i < columnNames.size() && i < fields.size(); ++i) {
    final String fieldName=columnNames.get(i);
    Object fieldValue=null;
    try {
      final String fieldStringValue=getCellContent(fields.get(i));
      final OType fieldType=columnTypes != null ? columnTypes.get(i) : null;
      if (fieldType != null && fieldType != OType.ANY) {
        fieldValue=getCellContent(fieldStringValue);
        try {
          fieldValue=OType.convert(fieldValue,fieldType.getDefaultJavaType());
          doc.field(fieldName,fieldValue);
        }
 catch (        Exception e) {
          processor.getStats().incrementErrors();
          log(OETLProcessor.LOG_LEVELS.ERROR,"String_Node_Str",processor.getExtractor().getProgress(),fieldName,i,fieldValue,fieldValue.getClass().getName(),fieldType);
        }
      }
 else       if (fieldStringValue != null && !fieldStringValue.isEmpty()) {
        fieldValue=determineTheType(fieldStringValue);
        if (nullValue != null && nullValue.equals(fieldValue))         continue;
        doc.field(fieldName,fieldValue);
      }
    }
 catch (    Exception e) {
      processor.getStats().incrementErrors();
      log(OETLProcessor.LOG_LEVELS.ERROR,"String_Node_Str",fieldName,fieldValue,e.toString());
    }
  }
  log(OETLProcessor.LOG_LEVELS.DEBUG,"String_Node_Str",doc);
  return doc;
}