public static Document getXMLDom(Map tm) {
if (tm == null) return null;
Document document = null;
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
DocumentBuilder parser = factory.newDocumentBuilder();
document = parser.newDocument();
} catch (Exception e) {
return null;
}
iterateMap(document, document.getDocumentElement(), tm, 0);
return document;
}
/* Remember that the map is a linear list of entries
/a/b B1
/a/c Map
/x X1
/y Y1
/y!r R1
/a/c!q Q1
/a/d D1
<a>
<b>B1</b>
<c q="Q1">
<x>X1</x>
<y r="R1">Y1</y>
</c>
<d>D1</d>
</a>
*/
private static void iterateMap(Document document, Node parentNode, Map tm, int d) {
doDebug(d, "> IterateMap parentNode= " + nodeToString(parentNode));
d++;
Iterator iter = tm.keySet().iterator();
while (iter.hasNext()) {
String key = (String) iter.next();
if (key == null) continue;
if (!key.startsWith("/")) continue; // Skip
Object obj = tm.get(key);
if (obj == null) {
continue;
}
if (obj instanceof String) {
storeInDom(document, parentNode, key, (String) obj, 0, d);
} else if (obj instanceof String[]) {
String[] strArray = (String[]) obj;
doDebug(d, "Looping through an array of length " + strArray.length);
for (int i = 0; i < strArray.length; i++) {
storeInDom(document, parentNode, key, strArray[i], i, d);
}
} else if (obj instanceof Map) {
Map subMap = (Map) obj;
Node startNode = getNodeAtPath(document, parentNode, key, 0, d);
doDebug(d, "descending into Map path=" + key + " startNode=" + nodeToString(startNode));
iterateMap(document, startNode, subMap, d);
doDebug(d, "back from descent Map path=" + key + " startNode=" + nodeToString(startNode));
} else if (obj instanceof List) {
List lst = (List) obj;
doDebug(d, "Have a list that is this long " + lst.size());
Iterator listIter = lst.iterator();
int newPos = 0;
while (listIter.hasNext()) {
Object listObj = listIter.next();
doDebug(d, "Processing List element@" + newPos + " " + listObj.getClass().getName());
if (listObj instanceof String) {
storeInDom(document, parentNode, key, (String) obj, newPos, d);
newPos++;
}
if (listObj instanceof Map) {
Map subMap = (Map) listObj;
doDebug(d, "Retrieving key from List-Map path=" + key + "@" + newPos);
Node startNode = getNodeAtPath(document, parentNode, key, newPos, d);
doDebug(
d,
"descending into List-Map path="
+ key
+ "@"
+ newPos
+ " startNode="
+ nodeToString(startNode));
iterateMap(document, startNode, subMap, d);
doDebug(
d,
"back from descent List-Map path="
+ key
+ "@"
+ newPos
+ " startNode="
+ nodeToString(startNode));
newPos++;
} else {
System.out.println(
"XMLMap Encountered an object of type "
+ obj.getClass().getName()
+ " in a List which should contain only Map objects");
}
}
} else {
doDebug(d, "Found a " + obj.getClass().getName() + " do not know how to iterate.");
}
}
d--;
doDebug(d, "< IterateMap parentNode = " + nodeToString(parentNode));
}