Nifi: can't recognize groovy xmlSlurper structure - groovy

Question

[enter image description here][1]I have nifi 1.3.0. Is it possible that groovy version which is implemented in nifi can't recognize lambdas? Here is my code, how can I change it to make work inside nifi processor?
is it possible that processor doesn;t work properly because i don't use session.tranfer i mean don't produce any flowfile?
def static addDays(def date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
c.setTime(sdf.parse(date));
c.add(Calendar.DATE, 1); // number of days to add
String m = sdf.format(c.getTime()); // dt is now the new date
return m;
}
def flowFile=session.get()
ArrayList<String> value = new ArrayList<>();
if(flowFile!=null){
value.add(flowFile.getAttribute('filename');
session.remove(flowFile);
}
File file = new File("C://Users//user//Desktop//try2//nifi-1.3.0//4//conf2.xml");
String content = "";
String material = "";
BufferedReader s;
BufferedWriter w;
RandomAccessFile ini = new RandomAccessFile(file, "rwd");
FileLock lock = ini.getChannel().lock();
DocumentBuilder dBuilder;
Document document, doc;
String date="",data="";
try {
String sCurrentLine;
s = new BufferedReader(Channels.newReader(ini.getChannel(), "UTF-8"));
while ((sCurrentLine = s.readLine()) != null) {
content += sCurrentLine;
}
ini.seek(0);
def xml = new XmlParser().parseText(content)
for(int i=0;i<value.size();i++) {
date = value.get(i).substring(0, 10);
xml.rs.borderCross.details.findAll({ p ->
p.runAs[0].text() == "false" && p.start[0].text() == date.toString()
}).each({ p ->
p.start[0].value = addDays( p.start[0].text())
p.runAs[0].value = "true"
})
}
def stringWriter = new StringWriter()
new XmlNodePrinter(new PrintWriter(stringWriter)).print(xml)
def newXml = stringWriter.toString()
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
InputStream stream1 = new ByteArrayInputStream(newXml.toString().getBytes("UTF-8"));
DocumentBuilderFactory dbFactory1 = DocumentBuilderFactory.newInstance();
dBuilder = dbFactory1.newDocumentBuilder();
document = dBuilder.parse(stream1);
DOMSource source=new DOMSource(document);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
StreamResult result1 = new StreamResult(bos);
try {
transformer.transform(source, result1);
} catch (TransformerException e) {
e.printStackTrace();
}
byte[] array = bos.toByteArray();
data = bos.toString();
if (!data.isEmpty()) {
ini.setLength(0);
w = new BufferedWriter(Channels.newWriter(ini.getChannel(), "UTF-8"));
w.write(data);
lock.release();
w.close();
}
else{
ini.setLength(0);
w = new BufferedWriter(Channels.newWriter(ini.getChannel(), "UTF-8"));
w.write(content);
lock.release();
w.close();
}
}catch (FileNotFoundException e) {
TimeUnit.SECONDS.sleep(50000);
} catch (IOException e) {
e.printStackTrace();
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (OverlappingFileLockException e) {
TimeUnit.SECONDS.sleep(50000);
lock.release(); ;
} catch (Exception e) {
e.printStackTrace();
} finally {
//lock.release();
ini.close();
}

Answer 1

Those aren't Java lambdas, they are Groovy closures. At first glance that looks correct, what error(s) are you getting? You may need to put the closures in parentheses before chaining them:
def xml = new XmlParser().parseText(content)
for(int i=0;i<value.size();i++) {
date = value.get(i).substring(0, 10);
xml.rs.borderCross.details.findAll({ p ->
p.runAs[0].text() == "false" && p.start[0].text() == date.toString()
}).each({ p ->
p.start[0].value = addDays( p.start[0].text())
p.runAs[0].value = "true"
})
}