DOCX4J conditional paragaph update merge FieldUpdater Does not work - merge

Question

Using a legacy IF field code:
enter image description here
and content controls:
private static byte[] mergingDocxFileWithXml(File file, File fileXml) {WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(file)
MainDocumentPart mainDocumentPart = wordMLPackage.getMainDocumentPart()
ArrayList<String> datas
List<Object> contentControls = ContentControl.getAllContentControl(mainDocumentPart)
List<String> arrayListXpathToBoucle = new ArrayList<>()
for (Object contenControl : contentControls) {
ContentControl cControl = new ContentControl(contenControl)
String xPath = cControl.getXPath()
String title = cControl.getTitle()
if (xPath != null) {
datas = XmlPath.getXmlDataFrom(fileXml, xPath)
}
switch (title) {
case "DateDuJour":
cControl.setValue(getDateDay())
break
case "checkbox":
String checkValue = new String(Character.toChars(0x2612))
if (datas[0] != "1") {
checkValue = new String(Character.toChars(0x2610))
}
cControl.setValue(checkValue)
break
case "Boucle_Ligne":
xPath = cControl.getTag()
int indexBoucleContent = getIndexContentBoucle(wordMLPackage.mainDocumentPart.getContent(), xPath)
NodeList nodeList = XmlPath.getNodeListXmlFile(fileXml, xPath)
List<String> dataXpath = getAllXpathForBoucle(contentControls, xPath)
for (int i = 0; i < dataXpath.stream().count(); i++) {
arrayListXpathToBoucle.add(dataXpath.get(i))
}
int totalNode = nodeList.getLength()
for (int j = 0; j < totalNode; j++) {
wordMLPackage = mapingDataNode(j, cControl, contentControls, fileXml, dataXpath, wordMLPackage, indexBoucleContent, null, 0)
}
wordMLPackage.mainDocumentPart.getContent().remove(indexBoucleContent)
break;
case "Boucle_Colonne":
xPath = cControl.getTag()
NodeList nodeList = XmlPath.getNodeListXmlFile(fileXml, xPath)
List<String> dataXpath = getAllXpathForBoucle(contentControls, xPath)
int totalNode = nodeList.getLength()
for (int i = 0; i < dataXpath.stream().count(); i++) {
arrayListXpathToBoucle.add(dataXpath.get(i))
}
String boucleValue = ""
for (int i = 0; i < totalNode; i++) {
datas = XmlPath.getXmlDataFrom(fileXml, dataXpath.get(0))
boucleValue += datas.get(i) + ", "
}
boucleValue = boucleValue.substring(0, boucleValue.length() - 2)
addValueInContentControl(contentControls, dataXpath.get(0), 0, boucleValue, null, wordMLPackage)
break
case "Boucle_Ligne_Table":
xPath = cControl.getTag()
NodeList nodeList = XmlPath.getNodeListXmlFile(fileXml, xPath)
int indexBoucleContent = getIndexContentBoucle(wordMLPackage.mainDocumentPart.getContent(), xPath)
List<String> dataXpath = getAllXpathForBoucle(contentControls, xPath)
int totalNode = nodeList.getLength()
for (int i = 0; i < dataXpath.stream().count(); i++) {
arrayListXpathToBoucle.add(dataXpath.get(i))
}
int nodeIndex = 0
Tbl arraysBoucle = getArraysBoucle(wordMLPackage, indexBoucleContent)
Tr trContent
for (int i = 0; i < totalNode; i++) {
nodeIndex = i + 1
if (arraysBoucle.getContent().stream().count() > 1) {
trContent = WoeDocx4jFunction.getTr(arraysBoucle.getContent().get(1))
} else {
trContent = WoeDocx4jFunction.getTr(arraysBoucle.getContent().get(0))
}
wordMLPackage = mapingDataNode(i, cControl, contentControls, fileXml, dataXpath, wordMLPackage, indexBoucleContent, trContent, nodeIndex)
}
int lastIndexTr = wordMLPackage.getMainDocumentPart().getContent().get(indexBoucleContent).sdtContent.content.get(1).value.content.stream().count()
wordMLPackage.getMainDocumentPart().getContent().get(indexBoucleContent).sdtContent.content.get(1).value.content.remove(lastIndexTr - 1)
break
case "IMAGE":
datas = XmlPath.getXmlDataFrom(fileXml, xPath)
byte[] imageByte = base64ToImage(datas.get(0))
Inline inlineImage = newImage(wordMLPackage, imageByte)
cControl.setValue(null, inlineImage)
break
default:
String xpathBoucle = arrayListXpathToBoucle.find { it.startsWith(xPath) }
if (xpathBoucle != xPath) {
addValueInContentControl(contentControls, xPath, 0, "", fileXml,wordMLPackage)
}
break
}
}
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
wordMLPackage= mergingFieldWordMlPackage(wordMLPackage)
FieldUpdater updater = new FieldUpdater(wordMLPackage)
updater.update(true);
wordMLPackage.save(outputStream);
return outputStream.toByteArray();
}

Answer 1

Docx4j's legacy field processing does not parse IF fields: http://webapp.docx4java.org/OnlineDemo/ecma376/WordML/IF.html
If you need to do that, you'll need to write code to do the parsing.
An alternative would be to use OpenDoPE conditional content controls. With one of these, the content of the SDT is included only if the associated XPath evaluates to true.