I am taking an XML file as an input (the data in file is like an index page of book, with chapter names and some other information), and I use my code to retrieve few values from it. The three values that I get from the file are:
Title (a long string of title to the chapter)
Number (chapter number)
ID (This is an ID associated with chapter, format: xxx-yy-zzz)
What I need to do is store these values in 5 different columns in an Excel sheet (by splitting the ID around the hyphens, where each part of ID is different sub-ID).
So, I iterate over the file, get the Title, Number and ID, and concatenate them together with "-" in between such that it looks like a String of format
Title-Number-SubID1-SubID2-SubID3
and I add each of these strings to a list, which I later iterate, split from "-" and get each of the 5 values and write to the Excel sheet.
My file has 113 unique occurrences, but I just notices that in my Excel sheet I only get 103 unique occurrences and 10 values are duplicates. And somehow, 10 values that are supposed to be in there are not in the sheet. I am really confused about what's happening.
EDIT:
This is where I get the string for each ID I send in along with the XML document.
public static String getBooksFromDoc(Document doc, String id)
throws Exception {
String idset = null;
String title = null;
String num = null;
doc.getDocumentElement().normalize();
XPath xPath = XPathFactory.newInstance().newXPath();
XPathExpression xPathExpr = (XPathExpression) xPath
.compile("//document[@id ='" + id + "']");
NodeList nlist = (NodeList) xPathExpr.evaluate(doc,
XPathConstants.NODESET);
for (int i = 0; i < nlist.getLength(); i++) {
rulebookProp = new RulebookProperties();
Node nnode = nlist.item(i);
XPathExpression xPath1 = (XPathExpression) xPath
.compile(".//idset");
Element eelement = (Element) nnode;
Node idNode = (Node) xPath1.evaluate(eelement, XPathConstants.NODE);
idset = idNode.getFirstChild().getNodeValue();
XPathExpression xPath2 = (XPathExpression) xPath
.compile(".//title");
Element eelement1 = (Element) nnode;
Node idNode1 = (Node) xPath2.evaluate(eelement1,
XPathConstants.NODE);
if (idNode1 == null) {
title = " ";
} else {
title = idNode1.getFirstChild().getNodeValue();
}
XPathExpression xPath3 = (XPathExpression) xPath
.compile(".//number");
Element eelement2 = (Element) nnode;
Node idNode2 = (Node) xPath3.evaluate(eelement2,
XPathConstants.NODE);
if (idNode2 == null) {
num = " ";
} else {
num = idNode2.getFirstChild().getNodeValue();
}
}
return title + "-" + num + "-" + idset;
}
I add each of the strings returned to a list.
List<String> books = new ArrayList<String>();
books.add(getBooksFromDoc(xmlDoc, id);
This is the method where I use the list to get the 5 values. (Note: In some occurences the ID looks like xxx or xxx-yyy or xxx-yyy-zzz i.e. it could be made up of three parts or one. (which explains the conditions in my code))
public static List<BookObject> getBookEntries(
List<String> books) {
String bookTitle = " ";
String bookID = " ";
String bookElementID = " ";
String recordID = " ";
String bookNo = " ";
for String book : books) {
String[] parts = book.split("-");
if (parts.length == 5) {
for (int i = 0; i < parts.length; i++) {
bookTitle = parts[0]
bookNo = parts[1]
bookID = parts[2];
bookElementID = parts[3];
recordID = parts[4];
bookObj = new BookObject();
bookObj.setBookTitle(bookTitle);
bookObj.setBookNo(bookNo);
bookObj.setBookId(bookID);
bookObj.setBookElementId(bookElementID);
bookObj.setRecordId(recordID);
}
} else if (parts.length == 4) {
for (int i = 0; i < parts.length; i++) {
bookTitle = parts[0]
bookNo = parts[1]
bookID = parts[2];
bookElementID = parts[3];
bookObj = new BookObject();
bookObj.setBookTitle(bookTitle);
bookObj.setBookNo(bookNo);
bookObj.setBookId(bookID);
bookObj.setBookElementId(bookElementID);
bookObj.setRecordId(recordID);
}
} else if (ids.length == 1) {
for (int i = 0; i < parts.length; i++) {
bookTitle = parts[0]
bookNo = parts[1]
bookID = parts[2];
bookObj = new BookObject();
bookObj.setBookTitle(bookTitle);
bookObj.setBookNo(bookNo);
bookObj.setBookId(bookID);
bookObj.setBookElementId(bookElementID);
bookObj.setRecordId(recordID);
}
}
bookEntries.add(bookObj);
}
return bookEntries;
}
Later I just iterate over each bookEntries and add to Excel sheet. (I hope this made it a little clear.)
for (int i = 0; i < listEntries.size(); i++) {
Row dataRow = sheet.createRow(i+1);
dataRow.createCell(0).setCellValue(
bookEntries.get(i).getBookTitle());
dataRow.createCell(1).setCellValue(
bookEntries.get(i).getBookId());
dataRow.createCell(2).setCellValue(
bookEntries.get(i).getBookElementId());
dataRow.createCell(3).setCellValue(
bookEntries.get(i).getRecordId());
dataRow.createCell(4).setCellValue(
bookEntries.get(i).getBookNo());
}