private List<Element> getSubElements(Element parent) {
List<Element> subElements = new ArrayList<>();
NodeList childNodes = parent.getChildNodes();
for (int i = 0; i < childNodes.getLength(); i++) {
Node childNode = childNodes.item(i);
if (childNode.getNodeType() == Node.ELEMENT_NODE) {
subElements.add((Element) childNode);
}
}
return subElements;
}
/**
* @param ce
* @return
*/
private SortedMap<Integer, ComponentDef> buildFixedComponents(Element ce) {
List<Element> fields = getSubElements(ce);
SortedMap<Integer, ComponentDef> fieldDefs;
if (fields.size() > 0) {
fieldDefs = new TreeMap<>();
int index = 1;
for (Element e : fields) {
ComponentDef def = buildComponent(e, true);
fieldDefs.put(index++, def);
}
} else {
throw new ConfigException("Composite components should have at least 1 sub field");
}
return fieldDefs;
}
/**
* @param ce
* @return
*/
private SortedMap<Integer, ComponentDef> buildTlvComponents(Element ce) {
List<Element> fields = getSubElements(ce);
SortedMap<Integer, ComponentDef> fieldDefs;
if (fields.size() > 0) {
fieldDefs = new TreeMap<>();
for (Element e : fields) {
Integer tag = Integer.valueOf(getMandatoryAttribute(e, ATTR_TAG));
ComponentDef def = buildTlvComponent(e, getOrdinality(e));
if (fieldDefs.containsKey(tag)) {
throw new ConfigException(format("Duplicate component tag: %d", tag));
}
fieldDefs.put(tag, def);
}
} else {
throw new ConfigException("Composite components should have at least 1 sub field");
}
return fieldDefs;
}